S73-7 Cal Balloon - .
Payload: OPS 6935 / P 73-7. Mass: 60 kg (132 lb). Nation: USA.
Agency: USAF AFSC.
Spacecraft Bus: Space Test Program Payloads.
Spacecraft: S73-7 Cal Balloon.
Decay Date: 1974-07-28 . USAF Sat Cat: 7244 . COSPAR: 1974-020B. Apogee: 247 km (153 mi). Perigee: 148 km (91 mi). Inclination: 94.40 deg. Period: 88.50 min. Space Test Program flight S73-7 was launched. The launch was successful but the mission failed when the payload -an infrared calibration balloon - failed to deploy..