Ginga (satellite)
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Names | Astro-C before launch |
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Mission type | X-ray Astronomy |
Operator | Institute of Space and Astronautical Science University of Tokyo |
COSPAR ID | 1987-012A ![]() |
SATCAT no. | 17480 |
Spacecraft properties | |
Launch mass | 400 kg (880 lb) |
Start of mission | |
Launch date | 06:28:00, February 5, 1987 (UTC) (1987-02-05T06:28:00Z) |
Rocket | M-3S2, mission M-3S2-3 |
Launch site | Uchinoura Space Center |
End of mission | |
Decay date | November 1, 1991 (1991-11-01) |
Orbital parameters | |
Reference system | Geocentric |
Eccentricity | 0.01365 |
Perigee altitude | 517 km (321 mi) |
Apogee altitude | 708 km (440 mi) |
Inclination | 31.1° |
Period | 97 min |
Epoch | February 5, 1987 |
ASTRO-C, renamed Ginga (Japanese for 'galaxy'), was an X-ray astronomy satellite launched from the Kagoshima Space Center on 5 February 1987 using M-3SII launch vehicle. The primary instrument for observations was the Large Area Counter (LAC). Ginga was the third Japanese X-ray astronomy mission, following Hakucho and Tenma (also Hinotori satellite - which preceded Ginga - had X-ray sensors, but it can be seen as a heliophysics rather than X-ray astronomy mission). Ginga reentered the Earth's atmosphere on 1 November 1991.
Instruments
- Large Area Proportional Counter (LAC 1.5-37 keV)
- All-Sky Monitor (ASM 1-20 keV)
- Gamma-ray Burst Detector (GBD 1.5-500 keV)
Highlights
- Discovery of transient Black Hole Candidates and study of their spectral evolution.
- Discovery of weak transients in the galactic ridge.
- Detection of cyclotron features in 3 X-ray pulsars: 4U1538-522, V0332+53, and Cep X-4.
- Evidence for emission and absorption Fe feature in Seyfert probing reprocessing by cold matter.
- Discovery of intense 6-7 keV iron line emission from the Galactic Center region.
External links
- NASA/GSFC information of Ginga (ex Astro-C)
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Radio and Microwave |
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Infrared |
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Optical |
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Ultraviolet | |
X-ray and Gamma-ray |
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Other (particle or unclassified) |
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- Ginga (Astro-C) (1987–1991)
- Granat (1989–1998)
- Hakucho (CORSA-b) (1979–1985)
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- Spitzer (2003–2020)
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- Taiyo (SRATS) (1975–1980)
- Tenma (Astro-B) (1983–1985)
- Uhuru (1970–1973)
- Vanguard 3 (1959)
- WMAP (2001–2010)
- Yokoh (Solar-A) (1991–2001)
(Mission completed)
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