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Atlas E Altair
Part of Atlas Family
American orbital launch vehicle. Atlas E + 1 x Star 20 upper stage.

Status: Retired 1990. First Launch: 1990-04-11. Last Launch: 1990-04-11. Number: 1 . Thrust: 1,731.00 kN (389,144 lbf). Gross mass: 125,000 kg (275,000 lb). Height: 27.30 m (89.50 ft). Diameter: 3.05 m (10.00 ft). Apogee: 1,000 km (600 mi).


More at: Atlas E Altair.

Family: orbital launch vehicle. Country: USA. Spacecraft: Stacksat P87-2. Launch Sites: Vandenberg, Vandenberg SLC3W. Stages: Atlas E/F, Atlas MA-3, Altair 3. Agency: Convair.

1990 April 11 - . 15:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC3W. LV Family: Atlas. Launch Vehicle: Atlas E Altair.
  • USA 56 - . Payload: POGS & SSR. Nation: USA. Agency: USAF. Class: Technology. Type: Navigation technology satellite. Spacecraft Bus: MAESTRO. Spacecraft: Stacksat P87-2. USAF Sat Cat: 20560 . COSPAR: 1990-031A. Apogee: 745 km (462 mi). Perigee: 627 km (389 mi). Inclination: 89.8000 deg. Period: 98.48 min.

    Polar Orbiting Geomagnetic Survey satellite designed to measure the Earth's magnetic field vector as a function of position. Data from the experiment was used to improve Earth navigation systems, and was stored in an experimental solid state recorder. Six low cost ground stations were designed, built and located around the world to operate the spacecraft flown on this mission.

  • USA 58 - . Payload: SCE. Nation: USA. Agency: USAF. Class: Technology. Type: Navigation technology satellite. Spacecraft Bus: MAESTRO. Spacecraft: Stacksat P87-2. USAF Sat Cat: 20562 . COSPAR: 1990-031C. Apogee: 741 km (460 mi). Perigee: 627 km (389 mi). Inclination: 89.8000 deg. Period: 98.44 min. SCE (Selective Communications Experiment) carried a variable frequency transmitter to study ionospheric effects at various RF frequencies, and was also designed to demonstrate message store and forward techniques..
  • USA 57 - . Payload: TEX. Nation: USA. Agency: USAF. Class: Technology. Type: Navigation technology satellite. Spacecraft Bus: MAESTRO. Spacecraft: Stacksat P87-2. USAF Sat Cat: 20561 . COSPAR: 1990-031B. Apogee: 742 km (461 mi). Perigee: 627 km (389 mi). Inclination: 89.8000 deg. Period: 98.45 min. TEX (Transceiver EXperiment) carried a variable power transmitter used to study ionospheric effects on RF transmissions. Data from the experiment was used to determine minimum spacecraft transmitter power levels for transmission to ground receivers..


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