Encyclopedia Astronautica
Gorizont



gorizont.jpg
Gorizont
Credit: © Mark Wade
gorizona.jpg
Gorizont
gorizonp.jpg
Gorizont
Credit: NPO PM
gorizpar.jpg
Gorizont
Credit: © Mark Wade
Russian communications satellite. 35 launches, 1978.12.19 (Gorizont 1) to 2000.06.06 (Gorizont). Gorizont-1 was designed specifically to support broadcast of the 1980 Olympic Games from Russia.

The first was launched in December 1978, followed by two in 1979. The last satellite was launched on 14 June 1980 and entered operation only on 2 July, 13 days before the start of the games. The constellation provided 30 channels of television via 500 Moskva receiving stations equipped with 2.5 m antennae. These broadcast television throughout the Soviet Union. Trials of the system were completed in 1981.

The geostationary Gorizont satellite was later part of the Russian YeSSS Unified Satellite Communication System. These satellites provided civilian and military telephone, telegraph, and facsimile communications services, in addition to relaying TV and radio broadcasts. Gorizont also supported maritime and international communications from 1988 as an element of the Okean system operating at 1.5 to 1.6 GHz. The KAUR-3 spacecraft bus was 3-axis stabilized using liquid propellant micro-engines to within 0.25 degrees of the earth's centre. The single-unit body was equipped with solar panels, and active liquid-gas phase-change thermoregulation system, and a corrective engine unit for making orbital adjustments. 25 square meters of solar panels provided 1280 W of power. Gorizont was equipped with seven transponders.260 GHz total bandwidth.195 W total transponder power with EIRP of 28 to 38.5 dBW. Frequency bands: 6/4, 14/11, 1.6/1.5 GHz.

The Gorizont satellites were primarily used for domestic and international communications. The Gorizont constellation in 1993-1994 established a tenth position in the geosynchronous ring for domestic needs and deployed three Gorizonts (one old, two new) to new locations in support of Rimsat, Ltd., the US-based firm leasing orbital slots from Tonga. In all, four Gorizont spacecraft were launched during 1993-1994, but one was lost due to a Proton launch failure. With no resident spacecraft being retired during the period, the number of active Gorizonts increased by the end of 1994 to its peak of 13.

The Gorizont spacecraft possessed an initial mass in excess of 2.1 metric tons and demonstrated a lifetime of nearly 10 years, although a 5-year service life was more common. The 3-axis stabilized satellite was approximately 2 m in diameter and 5 m long with two large solar arrays capable of generating 1.3 kW of electrical power for the first three years. Seven separate transmission antennas permitted a variety of reception patterns for both broad and localized terrestrial regions.

A typical Gorizont communications payload included six general purpose (TV, audio, facsimile) 6/4 GHz transponders (five 12.5 W and one 60 W), one Luch 14/11 GHz transponder (15 W), and one Volna 1.6/1.5 GHz transponder (20 W). The Volna transponders were INMARSAT-compatible and extensively used by the Russian merchant marine fleet via the primary control center in the Tomilino suburb of Moscow and the Odessa and Nakhodka ground stations. Gorizont was the primary geosynchronous television re-broadcasting system, supporting all five Russian Federation time zones: Zone 1 from 140 degrees E, Zone 2 from 90 degrees E, Zone 3 from 80 degrees E, Zone 4 from 53 degrees E, and Zone 5 from 14 degrees W. These transmissions were handled by Orbita (12-m receiving antenna) and Moskva (2.5-m receiving antenna) ground stations in the 6/4 GHz band. The Moskva Globalnaya system was inaugurated in 1989 using 4-m receiving antennas and serviced by Gorizonts at 96.5 degrees E and 11 degrees W.

AKA: 11F662.
Gross mass: 2,110 kg (4,650 lb).
First Launch: 1978.12.19.
Last Launch: 2000.06.06.
Number: 35 .

More... - Chronology...


Associated Countries
See also
  • Proton The Proton launch vehicle has been the medium-lift workhorse of the Soviet and Russian space programs for over forty years. Although constantly criticized within Russia for its use of toxic and ecologically-damaging storable liquid propellants, it has out-lasted all challengers, and no replacement is in sight. More...

Associated Launch Vehicles
  • Proton The Proton launch vehicle has been the medium-lift workhorse of the Soviet and Russian space programs for over forty years. Although constantly criticized within Russia for its use of toxic and ecologically-damaging storable liquid propellants, it has out-lasted all challengers, and no replacement is in sight. Development of the Proton began in 1962 as a two-stage vehicle that could be used to launch large military payloads or act as a ballistic missile with a 100 megaton nuclear warhead. The ICBM was cancelled in 1965, but development of a three-stage version for the crash program to send a Soviet man around the moon began in 1964. The hurried development caused severe reliability problems in early production. But these were eventually solved, and from the 1970's the Proton was used to launch all Russian space stations, medium- and geosynchronous orbit satellites, and lunar and planetary probes. More...
  • Proton-K/DM Russian orbital launch vehicle. The original four stage Proton / Block D configuration was used until 1976, at which time it was replaced by a modernised version equipped with N2O4/UDMH verniers for precise placement of payloads in geosynchronous orbit and its own self-contained guidance unit. This was accepted into military service in 1978 with the first Raduga launch. The stage was first developed for launch of gesynchronous military communications and early warning satellites (Raduga, Ekran, Gorizont, Potok, SPRN). Its later versions continue in use for launch of MEO and geosynchronous comsats, and was Russia's most successful commercial launcher. More...
  • Proton-K/DM-2 Russian orbital launch vehicle. This improved four stage version uses the Block DM-2 / 11S861 fourth stage, which has its own guidance unit. This reduces payload but does not require the spacecraft's guidance system to provide steering commands to booster. Replaced the original Block DM / 11S86 version from 1982 to 1995. Used for launch of Glonass navigation satellites into medium earth orbit; and launch of Luch, Ekran-M, Potok, Raduga, Gorizont, Raduga-1, Elektro, and Gals communications satellites into geosynchronous orbit. Commercial version with Saab payload adapter-seperation system for Western payloads was dubbed 'Block DM1'. More...
  • Proton/Briz K/M Earlier 8K82K model Proton, but Briz M storable propellant upper stage replaced the Block D cyrogenic stage. More...

Associated Manufacturers and Agencies
  • MOM Russian agency overseeing development of spacecraft. Ministry of General Machine Building (Moskva, Russia), Moscow, Russia. More...
  • Reshetnev Russian manufacturer of rockets and spacecraft. Reshetnev Design Bureau, Krasnoyarsk-26/Zhelenogorsk, Russia. More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: here.
  • Kaesmann, Ferdinand, et. al., "Proton - Development of A Russian Launch Vehicle", Journal of the British Interplanetary Society, 1998, Volume 51, page 3.
  • Voevodin, Sergey A, "Sergey A. Voevodin's Reports", VSA072 - Space Apparatus, Web Address when accessed: here.
  • "Zapushchen sputnik 'Gorizont'", Novosti Kosmonavtiki, 1996, Issue 2, page 24.
  • Vladimirov, A, "Tablitsa zapuskov RN 'Proton' i 'Proton K'", Novosti kosmonavtiki, 1998, Issue 10, page 25.
  • NASA/GSFC Orbital Information Group Website, Web Address when accessed: here.
  • Space-Launcher.com, Orbital Report News Agency. Web Address when accessed: here.

Associated Launch Sites
  • Baikonur Russia's largest cosmodrome, the only one used for manned launches and with facilities for the larger Proton, N1, and Energia launch vehicles. The spaceport ended up on foreign soil after the break-up of Soviet Union. The official designations NIIP-5 and GIK-5 are used in official Soviet histories. It was also universally referred to as Tyuratam by both Soviet military staff and engineers, and the US intelligence agencies. Since the dissolution of the Soviet Union the Russian Federation has insisted on continued use of the old Soviet 'public' name of Baikonur. In its Kazakh (Kazak) version this is rendered Baykonur. More...

Gorizont Chronology


1978 December 19 - . 12:15 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 295-02. FAILURE: Block DM malfunction, wrong orbit.. Failed Stage: 4.
  • Gorizont 1 - . Payload: Gorizont s/n 11L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1980-01-10 . USAF Sat Cat: 11158 . COSPAR: 1978-118A. Apogee: 49,371 km (30,677 mi). Perigee: 22,193 km (13,790 mi). Inclination: 22.4000 deg. Period: 1,435.90 min. Did not achieve geostationary orbit due to malfunction of Block D. Operation of telephone and telegraph radiocommunications and transmission of television programmes. Positioned in geosynchronous orbit over the Indian Ocean at 53 deg E in 1979-1980 As of 29 August 2001 located at 75.87 deg E drifting at 0.132 deg E per day. As of 2007 Mar 10 located at 57.49E drifting at 0.119E degrees per day.

1979 July 5 - . 23:19 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 299-01.
  • Gorizont 2 - . Payload: Gorizont s/n 12L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1983-12-06 . USAF Sat Cat: 11440 . COSPAR: 1979-062A. Apogee: 35,782 km (22,233 mi). Perigee: 35,777 km (22,230 mi). Inclination: 11.5000 deg. Period: 1,435.80 min. Stationed at 14 deg W. Statsionar 4. Positioned in geosynchronous orbit at 14 deg W in 1979-1981; 90 deg E in 1981-1983 As of 26 August 2001 located at 59.72 deg E drifting at 0.012 deg E per day. As of 2007 Mar 8 located at 84.05E drifting at 0.107W degrees per day.

1979 December 28 - . 11:51 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 303-01.
  • Gorizont 3 - . Payload: Gorizont s/n 13L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1989-12-28 . USAF Sat Cat: 11648 . COSPAR: 1979-105A. Apogee: 35,831 km (22,264 mi). Perigee: 35,779 km (22,231 mi). Inclination: 11.0000 deg. Period: 1,437.10 min. Summary: Stationed at 53 deg E. Positioned in geosynchronous orbit at 53 deg E in 1980-1984; 40 deg E in 1984-1989 As of 30 August 2001 located at 47.84 deg E drifting at 0.163 deg E per day. As of 2007 Mar 10 located at 109.81E drifting at 0.002E degrees per day..

1980 June 14 - . 00:49 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 303-02.
  • Gorizont 4 - . Payload: Gorizont s/n 15L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1988-10-25 . USAF Sat Cat: 11841 . COSPAR: 1980-049A. Apogee: 36,269 km (22,536 mi). Perigee: 36,239 km (22,517 mi). Inclination: 14.3000 deg. Period: 1,460.10 min. Stationed at 14 deg W. Positioned in geosynchronous orbit at 14 deg W in 1980-1984; 11 deg W in 1984-1985; 14 deg W in 1985; 11 deg W in 1985-1988 As of 3 September 2001 located at 106.01 deg W drifting at 5.930 deg W per day. As of 2007 Mar 9 located at 145.19W drifting at 5.924W degrees per day.

1982 March 15 - . 04:39 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 305-02.
  • Gorizont 5 - . Payload: Gorizont s/n 14L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1989-11-24 . USAF Sat Cat: 13092 . COSPAR: 1982-020A. Apogee: 36,427 km (22,634 mi). Perigee: 36,139 km (22,455 mi). Inclination: 9.7000 deg. Period: 1,461.50 min. Stationed at 53 deg E. Provision of telephone and telegraph radiocommunications and transmission of television programmes. Positioned in geosynchronous orbit at 53 deg E in 1982-1986; 96 deg E in 1986-1989 As of 28 August 2001 located at 156.27 deg E drifting at 6.267 deg W per day. As of 2007 Mar 10 located at 91.82E drifting at 6.281W degrees per day.

1982 October 20 - . 16:26 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 312-01.
  • Gorizont 6 - . Payload: Gorizont s/n 16L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1989-03-28 . USAF Sat Cat: 13624 . COSPAR: 1982-103A. Apogee: 35,814 km (22,253 mi). Perigee: 35,779 km (22,231 mi). Inclination: 12.8000 deg. Period: 1,436.60 min. Provision of telephone and telegraph radiocommunications and transmission of television programmes. Positioned in geosynchronous orbit at 90 deg E in 1982-1984; 140 deg E in 1984-1988; 170 deg W in 1988-1989 As of 31 August 2001 located at 45.17 deg W drifting at 0.179 deg E per day. As of 2007 Mar 9 located at 146.19W drifting at 0.287W degrees per day.

1983 June 30 - . 23:56 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 314-02.
  • Gorizont 7 - . Payload: Gorizont s/n 17L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1989-06-30 . USAF Sat Cat: 14160 . COSPAR: 1983-066A. Apogee: 36,374 km (22,601 mi). Perigee: 36,296 km (22,553 mi). Inclination: 12.3000 deg. Period: 1,464.20 min. Stationed at 14 deg W. Radio telephone and telegraph communications and television broadcasting. Positioned in geosynchronous orbit at 14 deg W in 1983-1986; 16 deg W in 1986-1987; 11 deg W in 1987-1989 As of 3 September 2001 located at 105.97 deg E drifting at 6.939 deg W per day. As of 2007 Mar 10 located at 169.25W drifting at 6.932W degrees per day.

1983 November 30 - . 13:51 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 308-02.
  • Gorizont 8 - . Payload: Gorizont s/n 18L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1988-11-28 . USAF Sat Cat: 14532 . COSPAR: 1983-118A. Apogee: 36,462 km (22,656 mi). Perigee: 36,254 km (22,527 mi). Inclination: 7.4000 deg. Period: 1,465.40 min. Stationed at 90 deg E. Radio telephone and telegraph communications and television broadcasting. Positioned in geosynchronous orbit at 90 deg E in 1983-1987; 140 deg E in 1987-1988 As of 2 September 2001 located at 3.86 deg W drifting at 7.211 deg W per day. As of 2007 Mar 10 located at 143.68W drifting at 7.218W degrees per day.

1984 April 22 - . 04:21 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 312-02.
  • Gorizont 9 - . Payload: Gorizont s/n 19L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1987-04-06 . USAF Sat Cat: 14940 . COSPAR: 1984-041A. Apogee: 35,805 km (22,248 mi). Perigee: 35,740 km (22,200 mi). Inclination: 11.5000 deg. Period: 1,435.40 min. Stationed at 53 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. Positioned in geosynchronous orbit at 53 deg E in 1984-1987 As of 3 September 2001 located at 55.62 deg E drifting at 0.094 deg W per day. As of 2007 Mar 2 located at 96.90E drifting at 0.028E degrees per day.

1984 August 1 - . 21:37 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 324-01.
  • Gorizont 10 - . Payload: Gorizont s/n 20L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1990-08-22 . USAF Sat Cat: 15144 . COSPAR: 1984-078A. Apogee: 35,810 km (22,250 mi). Perigee: 35,793 km (22,240 mi). Inclination: 6.8000 deg. Period: 1,436.90 min. Stationed at 80 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. Positioned in geosynchronous orbit at 80 deg E in 1984-1989; 170 deg W in 1989-1990 As of 5 September 2001 located at 157.76 deg W drifting at 0.193 deg E per day. As of 2007 Mar 8 located at 46.55W drifting at 0.187W degrees per day.

1985 January 18 - . 10:25 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 326-02.
  • Gorizont 11 - . Payload: Gorizont s/n 21L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1991-09-02 . USAF Sat Cat: 15484 . COSPAR: 1985-007A. Apogee: 35,803 km (22,246 mi). Perigee: 35,764 km (22,222 mi). Inclination: 11.0000 deg. Period: 1,435.90 min. Stationed at 140 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. Positioned in geosynchronous orbit at 140 deg E in 1985-1987; 53 deg E in 1987-1989; 11 deg W in 1989-1991 As of 5 September 2001 located at 22.94 deg W drifting at 0.085 deg E per day. As of 2007 Mar 10 located at 14.60W drifting at 0.040W degrees per day.

1986 June 10 - . 00:49 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 322-02.
  • Gorizont 12 - . Payload: Gorizont s/n 24L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1991-01-23 . USAF Sat Cat: 16769 . COSPAR: 1986-044A. Apogee: 35,794 km (22,241 mi). Perigee: 35,763 km (22,222 mi). Inclination: 10.1000 deg. Period: 1,435.70 min. Stationed at 345 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. Positioned in geosynchronous orbit at 14 deg W in 1986-1989; 40 deg E in 1989-1990 As of 28 August 2001 located at 84.75 deg E drifting at 0.265 deg W per day. As of 2007 Mar 10 located at 45.79E drifting at 0.142E degrees per day.

1986 November 18 - . 14:08 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 334-01.
  • Gorizont 13 - . Payload: Gorizont s/n 22L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1991-04-18 . USAF Sat Cat: 17083 . COSPAR: 1986-090A. Apogee: 36,863 km (22,905 mi). Perigee: 36,759 km (22,840 mi). Inclination: 10.3000 deg. Period: 1,488.80 min. Stationed at 90 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. Positioned in geosynchronous orbit at 90 deg E in 1986-1991 As of 5 September 2001 located at 132.70 deg W drifting at 12.791 deg W per day. As of 2007 Mar 10 located at 94.81E drifting at 12.778W degrees per day.

1987 May 11 - . 14:45 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 338-02.
  • Gorizont 14 - . Payload: Gorizont s/n 23L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1992-06-25 . USAF Sat Cat: 17969 . COSPAR: 1987-040A. Apogee: 36,658 km (22,778 mi). Perigee: 36,416 km (22,627 mi). Inclination: 6.6000 deg. Period: 1,474.60 min. Stationed at 140 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. Positioned in geosynchronous orbit at 140 deg E in 1987-1989; 103 deg E in 1989-1992 As of 28 August 2001 located at 132.07 deg W drifting at 9.420 deg W per day. As of 2007 Mar 9 located at 61.02W drifting at 9.418W degrees per day.

1988 January 18 - . 09:58 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 341-02. FAILURE: Third stage malfunction.. Failed Stage: 3.
  • Gorizont s/n 25L - . Payload: Gorizont s/n 25L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: UNKS. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont. COSPAR: F880118A.

1988 March 31 - . 04:18 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 343-02.
  • Gorizont 15 - . Payload: Gorizont s/n 26L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1992-09-14 . USAF Sat Cat: 19017 . COSPAR: 1988-028A. Apogee: 36,630 km (22,760 mi). Perigee: 36,343 km (22,582 mi). Inclination: 3.7000 deg. Period: 1,472.00 min. Stationed at 346 deg E. Radio telephone and telegraph communications and television broadcasting. Positioned in geosynchronous orbit at 14 deg W in 1988-1991; 11 deg W in 1991-1992 As of 31 August 2001 located at 29.28 deg W drifting at 8.804 deg W per day. As of 2007 Mar 11 located at 152.02W drifting at 8.807W degrees per day.

1988 August 18 - . 19:52 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 333-02.
  • Gorizont 16 - . Payload: Gorizont s/n 28L. Mass: 2,100 kg (4,600 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1992-01-21 . USAF Sat Cat: 19397 . COSPAR: 1988-071A. Apogee: 35,919 km (22,318 mi). Perigee: 35,816 km (22,254 mi). Inclination: 3.2000 deg. Period: 1,440.30 min. Stationed at 80 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. Positioned in geosynchronous orbit at 80 deg E in 1988-1992 As of 28 August 2001 located at 176.78 deg W drifting at 1.036 deg W per day. As of 2007 Mar 8 located at 169.61W drifting at 1.046W degrees per day.

1989 January 26 - . 09:16 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 351-02.
  • Gorizont 17 - . Payload: Gorizont s/n 29L. Mass: 2,120 kg (4,670 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1997-02-08 . USAF Sat Cat: 19765 . COSPAR: 1989-004A. Apogee: 36,224 km (22,508 mi). Perigee: 36,034 km (22,390 mi). Inclination: 8.4000 deg. Period: 1,453.60 min. Stationed at 53 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. The Rimsat network was initiated when Gorizont 17 was leased to the corporation and transferred from 53 degrees E (where it was then a backup to Gorizont 27) to 134 degrees E during late-June and July, 1993. At the close of 1994, Gorizont 17 was still on station but nearing the end of its operational life after six years. Positioned in geosynchronous orbit at 53 deg E in 1989-1993; 134 deg E in 1993-1995; 34 deg E in 1995-1997 As of 30 August 2001 located at 22.84 deg W drifting at 4.340 deg W per day. As of 2007 Mar 10 located at 147.41W drifting at 4.350W degrees per day.

1989 July 5 - . 22:45 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 340-02.
  • Gorizont 18 - . Payload: Gorizont s/n 27L. Mass: 2,120 kg (4,670 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1996-10-01 . USAF Sat Cat: 20107 . COSPAR: 1989-052A. Apogee: 36,165 km (22,471 mi). Perigee: 35,902 km (22,308 mi). Inclination: 8.0000 deg. Period: 1,448.70 min. Stationed at 140 deg E. Provision of telephone and telegraph radiocommunications and television broadcasting. Positioned in geosynchronous orbit at 140 deg E in 1989-1996 As of 5 September 2001 located at 100.49 deg E drifting at 3.169 deg W per day. As of 2007 Mar 9 located at 90.76W drifting at 3.156W degrees per day.

1989 September 28 - . 17:05 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 346-01.
  • Gorizont 19 - . Payload: Gorizont s/n 31L. Mass: 2,120 kg (4,670 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1998-05-05 . USAF Sat Cat: 20263 . COSPAR: 1989-081A. Apogee: 35,827 km (22,261 mi). Perigee: 35,793 km (22,240 mi). Inclination: 7.9000 deg. Period: 1,437.30 min. Stationed at 97.5 deg E. Operation of the long-range telephone and telegraph radio-communications system and transmission of television programmes. Positioned in geosynchronous orbit at 97 deg E in 1989-1996; 34 deg E in 1996-1998 As of 4 September 2001 located at 105.39 deg E drifting at 0.168 deg E per day. As of 2007 Feb 28 located at 84.84E drifting at 0.295W degrees per day.

1990 June 20 - . 23:36 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/40. LV Family: Proton. Launch Vehicle: Proton-K/DM. LV Configuration: Proton-K/DM 342-02.
  • Gorizont 20 - . Payload: Gorizont s/n 30L. Mass: 2,125 kg (4,684 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1999-02-01 . USAF Sat Cat: 20659 . COSPAR: 1990-054A. Apogee: 35,801 km (22,245 mi). Perigee: 35,771 km (22,227 mi). Inclination: 1.5000 deg. Period: 1,436.10 min. Stationed at 90 deg E. Provision of telephone and telegraph communications and transmission of television programmes, continuation of work in the context of the 'Intercosmos' programme for the development of new frequency ranges and the creation of long-range systems of space c ommunications jointly with the Byelorussian SSR, GDR, Hungary and Czechoslovakia. Positioned in geosynchronous orbit at 90 deg E in 1990; 14 deg W in 1990-1995; 26 deg E in 1995-1998; 96 deg E in 1998-1999 As of 4 September 2001 located at 77.53 deg E drifting at 0.186 deg W per day. As of 2007 Mar 8 located at 83.10E drifting at 0.160E degrees per day.

1990 November 3 - . 14:40 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 370-01.
  • Gorizont 21 - . Payload: Gorizont s/n 32L. Mass: 2,125 kg (4,684 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 20923 . COSPAR: 1990-094A. Apogee: 35,788 km (22,237 mi). Perigee: 35,780 km (22,230 mi). Inclination: 1.3000 deg. Period: 1,436.00 min. Stationed at 90 deg E. Operation of the long-range telephone and telegraph radio-communications system and transmission of television programmes. Positioned in geosynchronous orbit at 90 deg E in 1990-1993. Gorizont 28 replaced Gorizont 21 at 90 degrees E in 1993. This allowed Gorizont 21 to be repositioned from mid-November to late-December for the inauguration of a new station at 145 degrees E. 145 deg E in 1993-1999 As of 2 September 2001 located at 4.18 deg E drifting at 0.139 deg W per day. As of 2007 Mar 9 located at 5.59E drifting at 0.135E degrees per day.

1990 November 23 - . 13:22 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 348-02.
  • Gorizont 22 - . Payload: Gorizont s/n 33L. Mass: 2,125 kg (4,684 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 20953 . COSPAR: 1990-102A. Apogee: 35,794 km (22,241 mi). Perigee: 35,781 km (22,233 mi). Inclination: 1.2000 deg. Period: 1,436.20 min. Stationed at 40 deg E. Operation of the long-range telephone and telegraph radio-communications system and transmission of television programmes. Positioned in geosynchronous orbit at 40 deg E in 1990-1996; 140 deg E in 1996-1999 As of 31 August 2001 located at 45.22 deg E drifting at 0.368 deg W per day. As of 2007 Mar 10 located at 85.49E drifting at 0.416E degrees per day.

1991 July 1 - . 21:53 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 373-01.
  • Gorizont 23 - . Payload: Gorizont s/n 34L. Mass: 2,125 kg (4,684 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1992-06-24 . USAF Sat Cat: 21533 . COSPAR: 1991-046A. Apogee: 36,188 km (22,486 mi). Perigee: 36,158 km (22,467 mi). Inclination: 6.8000 deg. Period: 1,455.90 min. Stationed at 103 deg E. Maintenance of telephone and telegraph radio communications and transmission of television broadcasts. Positioned in geosynchronous orbit at 103 deg E in 1991-1992 As of 5 September 2001 located at 159.68 deg E drifting at 4.917 deg W per day. As of 2007 Mar 10 located at 0.82W drifting at 4.909W degrees per day.

1991 October 23 - . 15:25 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 362-02.
  • Gorizont 24 - . Payload: Gorizont s/n 35L. Mass: 2,125 kg (4,684 lb). Nation: USSR. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . Completed Operations Date: 1998-06-01 . USAF Sat Cat: 21759 . COSPAR: 1991-074A. Apogee: 36,394 km (22,614 mi). Perigee: 36,220 km (22,500 mi). Inclination: 6.5000 deg. Period: 1,462.80 min. Stationed at 80 deg E. Maintenance of telephone and telegraph radio communications and transmission of television broadcasts. Positioned in geosynchronous orbit at 80 deg E in 1991-1998 As of 28 August 2001 located at 158.79 deg E drifting at 6.583 deg W per day. As of 2007 Mar 9 located at 172.52W drifting at 6.586W degrees per day.

1992 April 2 - . 01:50 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 369-01.
  • Gorizont 25 - . Payload: Gorizont s/n 36L. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 21922 . COSPAR: 1992-017A. Apogee: 35,787 km (22,236 mi). Perigee: 35,783 km (22,234 mi). Inclination: 0.2000 deg. Period: 1,436.00 min. Stationed at 103 deg E. Transmission of Russian radio and television programmes in Siberia and the solution of communications problems in Russia's eastern regions. Positioned in geosynchronous orbit at 103 deg E in 1992-1999 As of 5 September 2001 located at 140.44 deg E drifting at 0.018 deg W per day. As of 2007 Mar 10 located at 44.59W drifting at 1.512W degrees per day.

1992 July 14 - . 22:02 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 371-02.
  • Gorizont 26 - . Payload: Gorizont s/n 37L. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 22041 . COSPAR: 1992-043A. Apogee: 35,799 km (22,244 mi). Perigee: 35,777 km (22,230 mi). Inclination: 0.5000 deg. Period: 1,436.20 min. Stationed at 349 deg E. Development of the communications and television broadcasting system. Launched in the interests of the Ministry of Communications of the Russian Federation. Positioned in geosynchronous orbit at 11 deg W in 1992-1999 As of 5 September 2001 located at 13.53 deg W drifting at 0.004 deg E per day. As of 2007 Feb 21 located at 16.60E drifting at 0.001E degrees per day.

1992 November 27 - . 13:10 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 364-01.
  • Gorizont 27 - . Payload: Gorizont s/n 38L. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 22245 . COSPAR: 1992-082A. Apogee: 35,794 km (22,241 mi). Perigee: 35,774 km (22,228 mi). Inclination: 0.6000 deg. Period: 1,436.00 min. Stationed at 53 deg E. Development of the communications and television broadcasting system. Positioned in geosynchronous orbit at 53 deg E in 1992-1996; 96 deg E in 1996-1998; 50 deg E in 1999. As of 5 September 2001 located at 26.46 deg E drifting at 0.193 deg W per day. As of 2007 Mar 11 located at 26.21E drifting at 0.345W degrees per day.

1993 May 27 - . 01:22 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 364-02. FAILURE: Second stage did not reach planned velocity. Cause determined to be propellant contamination.. Failed Stage: 2.
  • Gorizont s/n 39L - . Payload: Gorizont s/n 39L. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: VKS. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont. COSPAR: F930527A.

1993 October 28 - . 15:17 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 368-01.
  • Gorizont 28 - . Payload: Gorizont s/n 40L. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 22880 . COSPAR: 1993-069A. Apogee: 35,796 km (22,242 mi). Perigee: 35,777 km (22,230 mi). Inclination: 5.1000 deg. Period: 1,436.10 min. Gorizont 28 replaced Gorizont 21 at 90 degrees E. This allowed Gorizont 21 to be repositioned from mid-November to late-December for the inauguration of a new station at 145 degrees E. As of 6 September 2001 located at 96.68 deg E drifting at 0.011 deg W per day. As of 2007 Mar 11 located at 116.96E drifting at 0.001E degrees per day.

1993 November 18 - . 13:54 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 367-01.
  • Gorizont 29 - . Payload: Gorizont s/n 41L. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 22907 . COSPAR: 1993-072A. Apogee: 35,835 km (22,266 mi). Perigee: 35,800 km (22,200 mi). Inclination: 5.0000 deg. Period: 1,437.70 min. Gorizont 29 (18 November 1993) and 30 (20 May 1994) were launched for Rimsat, Ltd., to provide communications services in the Pacific region under an agreement signed in 1992 between Rimsat and the Applied Mechanics NPO. Gorizont 29 was located at 130 degrees E in accordance with a lease arrangement with Rimsat Corporation (using slots allocated to Tonga by the International Telecommunications Union). Intended for use under commercial conditions. Positioned in geosynchronous orbit at 130 deg E in 1993-1997; 161 deg E in 1997-1998; 130 deg E in 1999. As of 5 September 2001 located at 130.39 deg E drifting at 0.011 deg W per day. As of 2007 Mar 8 located at 168.05E drifting at 0.374W degrees per day.

1994 May 20 - . 02:01 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/23. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 357-01.
  • Gorizont 30 - . Payload: Gorizont s/n 42L. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 23108 . COSPAR: 1994-030A. Apogee: 35,833 km (22,265 mi). Perigee: 35,800 km (22,200 mi). Inclination: 4.8000 deg. Period: 1,437.60 min. Stationed at 142.5 deg E as 'Rimsat-2' - leased to Rimsat Corporation, using an orbital slot allocated to Tonga. Communications satellite intended for use under commercial conditions. Positioned in geosynchronous orbit at 142 deg E in 1994-1997; 122 deg E in 1997-1999; 142 deg E in 1999. As of 5 September 2001 located at 142.86 deg E drifting at 0.016 deg W per day. As of 2007 Mar 9 located at 173.22W drifting at 0.132W degrees per day.

1996 January 25 - . 09:56 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 374-02.
  • Gorizont 31 - . Payload: Gorizont s/n 43L. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 23775 . COSPAR: 1996-005A. Apogee: 35,801 km (22,245 mi). Perigee: 35,777 km (22,230 mi). Inclination: 0.9000 deg. Period: 1,436.20 min. Summary: Stationed at 39.8E. Positioned in geosynchronous orbit at 40 deg E in 1996-1999 As of 5 September 2001 located at 40.11 deg E drifting at 0.042 deg W per day. As of 2007 Mar 11 located at 74.36E drifting at 1.416W degrees per day..

1996 May 25 - . 02:05 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC200/39. LV Family: Proton. Launch Vehicle: Proton-K/DM-2. LV Configuration: Proton-K/DM-2 379-01.
  • Gorizont 32 - . Payload: Gorizont s/n 44L. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: MOM. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont . USAF Sat Cat: 23880 . COSPAR: 1996-034A. Apogee: 35,801 km (22,245 mi). Perigee: 35,776 km (22,230 mi). Inclination: 3.3000 deg. Period: 1,436.20 min. Summary: Stationed at 53.2E. Positioned in geosynchronous orbit at 53 deg E in 1996-1999 As of 5 September 2001 located at 53.25 deg E drifting at 0.005 deg E per day. As of 2007 Mar 10 located at 14.58W drifting at 0.023W degrees per day..

2000 June 6 - . 02:59 GMT - . Launch Site: Baikonur. Launch Complex: Baikonur LC81/24. LV Family: Proton. Launch Vehicle: Proton/Briz K/M. LV Configuration: Proton-K/Briz-M 392-01.
  • Gorizont - . Payload: Gorizont 45. Mass: 2,125 kg (4,684 lb). Nation: Russia. Agency: Svyaz. Manufacturer: Reshetnev. Class: Communications. Type: Civilian communications satellite. Spacecraft: Gorizont. Completed Operations Date: 2000-06-06 . USAF Sat Cat: 26372 . COSPAR: 2000-029A. Apogee: 35,798 km (22,243 mi). Perigee: 35,779 km (22,231 mi). Inclination: 0.3000 deg. Period: 1,436.20 min. Communications satellite. First successful Proton/Briz-M launch. The Proton placed the Briz-M/Gorizont payload stack into a suborbital trajectory. The stage then performed four maneuvers to put the satellite into geosynchronous orbit:
    • Burn 1 placed the stack into a 200 km, 51.6 deg parking orbit probably inclined at around 51.6
    • Burn 2 raised apogee to 6000 km and changed inclination slightly
    • Burn 3, at second perigee, four hours after launch put the stack in a 369 x 34,988 km x 48.8 deg transfer orbit. The Briz-M then jettisoned its empty toroidal supplementary fuel tank.
    • Burn 4, ten hours after launch, placed Gorizont No. 45L in near-geostationary orbit.

    Gorizont No. 45L was expected to be the final launch of that model of television broadcasting satellite. It carried 6 C-band transponders, one L-band, and one Ku-band transponder. The newer Ekspress satellites are replacing the system. Stationed at 145 deg E. Positioned in geosynchronous orbit at 145 deg E in 2000. As of 5 September 2001 located at 145.25 deg E drifting at 0.002 deg W per day. As of 2007 Mar 10 located at 144.69E drifting at 0.019W degrees per day.

Home - Browse - Contact
© / Conditions for Use