 | Syncom
Credit - NASA
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Class: Technology. Type: Communications. Destination: Geosynchronous Orbit. Nation: USA. Agency: NASA. Experimental telecommunications satellite. Typical orbit: 35356 km x 36141 km at .1 to 33.3 degrees inclin. Mass: 39 kg (85 lb).
Syncom Chronology - 1963 February 14 - Syncom I; Syncom 1 - Launch Site: Cape Canaveral. Launch Complex: LC17B. Launch Vehicle: Delta. Mass: 39 kg (85 lb). Perigee: 34,392 km (21,370 mi). Apogee: 36,739 km (22,828 mi). Inclination: 33.30 deg. Period: 1,425.50 min.
Experimental commsat; lost contact following orbital injection. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Four score. Last known longitude (10 March 1987) 172.58 deg E drifting at 2.429 deg E per day.
- 1963 July 26 - Syncom 2 - Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 39 kg (85 lb). Perigee: 35,891 km (22,301 mi). Apogee: 35,891 km (22,301 mi). Inclination: 32.70 deg. Period: 1,441.50 min.
Experimental commsat; 1st geosynchronous satellite. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 55 deg W in 1963; 26 deg W in 1965. Last known longitude (19 July 1995) 68.47 deg E drifting at 0.089 deg W per day.
- 1964 August 19 - Syncom 3 - Launch Site: Cape Canaveral. Launch Complex: LC17A. Launch Vehicle: Delta. Mass: 39 kg (85 lb). Perigee: 35,784 km (22,235 mi). Apogee: 35,792 km (22,240 mi). Inclination: 0.10 deg. Period: 1,436.20 min.
Experimental commsat; carried Star Flash experiment. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 64 deg W in 1964; 180 deg E in 1964; 25 deg W in 1965; 165 deg E in 1966-1969. Last known longitude (6 December 1974) 6.08 deg W drifting at 0.188 deg W per day.
Bibliography:- McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: http://www.planet4589.org/jsr.html.
- JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: http://msl.jpl.nasa.gov/home.html.
- McDowell, Jonathan, Launch Log, October 1998. Web Address when accessed: http://hea-www.harvard.edu/~jcm/space/log/launch.html.
- NASA Report, Advanced Syncom, Volume 1 Summary Report, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660014301_1966014301.pdf.
- NASA Report, Advanced Syncom - Syncom II Summary Report, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660014300_1966014300.pdf.
- NASA Report, Advanced Syncom Monthly Progress Report, Oct. 1962, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660083965_1966083965.pdf.
- NASA Report, Advanced Syncom Monthly Progress Report, Oct. 1962, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660083963_1966083963.pdf.
- NASA Report, Advanced Syncom Monthly Progress Report, Nov. 1962, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660083964_1966083964.pdf.
- NASA Report, Advanced Syncom Monthly Progress Report Dec 1962, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660084174_1966084174.pdf.
- NASA Report, Advanced Syncom Monthly Progress Report Feb 1963, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660084169_1966084169.pdf.
- NASA Report, Advanced Syncom Monthly Progress Report April 1963, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660084178_1966084178.pdf.
- NASA Report, Advanced Syncom Monthly Progress Report May 1963, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660084171_1966084171.pdf.
- NASA Report, Advanced Syncom Monthly Progress Report July 1963, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660084219_1966084219.pdf.
- NASA Report, Advanced Syncom Monthly Progress Report, Sep. 1963, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660083966_1966083966.pdf.
- NASA Report, The SYNCOM III Launch, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660012415_1966012415.pdf.
- NASA Report, Television Tests With the Syncom II Synchronous Communications Satellite, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19650019255_1965019255.pdf.
- NASA Report, SYNCOM Engineering Report, Volume I, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19660012402_1966012402.pdf.
- NASA Report, SYNCOM Engineering Report, Volume II, Web Address when accessed: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19670015715_1967015715.pdf.
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© Mark Wade, 1997 - 2008 except where otherwise noted.
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 | STS-41-D
Deployment of the Syncom IV (Leasat-2) satellite...
Credit- NASA
Deployment of the Syncom IV (Leasat-2) satellite |
 | STS-41-D
View of the Syncom IV satellite in orbit over the earth...
Credit- NASA
View of the Syncom IV satellite in orbit over the earth |
 | STS-51-A
Syncom IV-1 satellite leaving Discovery's payload bay...
Credit- NASA
Syncom IV-1 satellite leaving Discovery's payload bay |
 | STS-51-D
End effector of the Discovery's RMS with tools moves toward Syncom-IV...
Credit- NASA
End effector of the Discovery's RMS with tools moves toward Syncom-IV |
 | STS-51-D
Syncom-IV (LEASAT) satellite...
Credit- NASA
Syncom-IV (LEASAT) satellite |
 | STS-51-I
Astronaut James van Hoften on RMS tracking Syncom IV-3 after deployment...
Credit- NASA
Astronaut James van Hoften on RMS tracking Syncom IV-3 after deployment |
 | STS-51-I
Astronaut James van Hoften working with Syncom IV-3 satellite...
Credit- NASA
Astronaut James van Hoften working with Syncom IV-3 satellite |
 | STS-51-I
Astronaut James van Hoften working with Syncom IV-3 satellite...
Credit- NASA
Astronaut James van Hoften working with Syncom IV-3 satellite |
 | STS-51-I
Astronaut James van Hoften working with Syncom IV-3 satellite...
Credit- NASA
Astronaut James van Hoften working with Syncom IV-3 satellite |
 | STS-32
SYNCOM IV-5 satellite drifts over cloud-covered Earth after STS-32 deployment...
Credit- NASA
SYNCOM IV-5 satellite drifts over cloud-covered Earth after STS-32 deployment |
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