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GemStar
GemStar 1 (VitaSat)
GemStar 1 (VitaSat)
Credit: Manufacturer Image
American communications satellite. Global Electronic Messaging Satellite.

Status: Operational 1995. First Launch: 1995-08-15. Last Launch: 1995-08-15. Number: 1 . Gross mass: 113 kg (249 lb).


More at: GemStar.

Subtopics

REX American earth ionosphere satellite. The REX satellites were designed to study scintillation effects of the Earth's atmosphere on RF transmissions. Experimental satellite built by DSI (#1), CTA (#2) for USAF STP (Space Test Program), USA. Launched 1991 - 1996. Used the GemStar Bus bus.

GemStar 1 (VITASat 1) Communication satellite built by CTA for CTA, VITA, USA. Launched 1995. Used the GemStar Bus bus.

ACRIMSAT American solar satellite. The NASA ACRIMSAT satellite was managed by JPL, and measured the integrated solar energy output from 0.2 to 2 microns. ACRIMSAT was built by Orbital Sciences. Solar observing satellite built by Orbital Sciences Corporation (OSC) for NASA, USA. Launched 1999. Used the MiniStar bus.

Family: Communications, MX. Country: USA. Spacecraft: Athena Mars Flyby. Launch Vehicles: Athena-1, LLV-1. Launch Sites: Vandenberg, Vandenberg SLC6. Bibliography: 5, 12484.

1991 June 29 - . 14:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC5. LV Family: Scout. Launch Vehicle: Scout G-1.
  • REX - . Payload: REX 1. Mass: 85 kg (187 lb). Nation: USA. Agency: USAF Rome. Class: Earth. Type: Ionosphere satellite. Spacecraft Bus: GemStar. Spacecraft: REX. USAF Sat Cat: 21527 . COSPAR: 1991-045A. Apogee: 869 km (539 mi). Perigee: 767 km (476 mi). Inclination: 89.5000 deg. Period: 101.30 min. Radiation Experiment; tested communications components in high radiation environment. Spacecraft engaged in research and exploration of the upper atmosphere or outer space (US Cat B)..

1995 August 15 - . 22:30 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC6. LV Family: Athena. Launch Vehicle: Athena-1. FAILURE: Destroyed by range safety 160 sec into flight after failure of thrust vector control system.. Failed Stage: 2.
  • GemStar 1 (VitaSat) - . Payload: Gemstar DSS-1. Mass: 113 kg (249 lb). Nation: USA. Agency: LMSC. Class: Communications. Type: Civilian communications satellite. Spacecraft: GemStar. Decay Date: 1995-08-15 . Global Electronic Messaging Satellite;..

1996 March 9 - . 01:53 GMT - . Launch Site: Point Arguello. Launch Complex: Point Arguello WADZ. Launch Pad: Aircraft from Vandenberg.. Launch Platform: L-1011. LV Family: Pegasus. Launch Vehicle: Pegasus XL.
  • REX-II - . Mass: 85 kg (187 lb). Nation: USA. Agency: USAF STP. Class: Earth. Type: Ionosphere satellite. Spacecraft Bus: GemStar. Spacecraft: REX. USAF Sat Cat: 23814 . COSPAR: 1996-014A. Apogee: 835 km (518 mi). Perigee: 799 km (496 mi). Inclination: 90.0000 deg. Period: 101.20 min. LEO Air dropped in Point Arguello WADZ..

1999 December 21 - . 07:13 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg 576E. LV Family: Taurus. Launch Vehicle: Taurus 2110.
  • ACRIMSAT - . Mass: 115 kg (253 lb). Nation: USA. Agency: JPL, NASA. Manufacturer: Germantown. Class: Earth. Type: Seismology satellite. Spacecraft Bus: GemStar. Spacecraft: ACRIMSAT . USAF Sat Cat: 26033 . COSPAR: 1999-070B. Apogee: 711 km (441 mi). Perigee: 671 km (416 mi). Inclination: 97.8000 deg. Period: 98.60 min.

    Measured the integrated solar energy output from 0.2 to 2 microns. Carried instrument deleted from Terra spacecraft, studying the total solar output. Failed on 2013 December 14 due to battery problems, months after a review recommended its continued operation. The ACRIM series of experiments, critical data for climate change studies, flew on Solar Max (1980), Spacelab-1 (1983), UARS (1991), and ACRIMSAT. The similar TIM instrument on the SORCE satellite (2003) continued operating, but it was unclear if it would continue in operation until a replacement instrument would be launched on the JPSS satellite in 2017 at the earliest.



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