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Advanced Satellite for Cosmology and Astrophysics information


Advanced Satellite for Cosmology and Astrophysics
NamesASTRO-D, Asuka
Mission typeX-ray observatory
OperatorISAS / NASA
COSPAR ID1993-011A Edit this at Wikidata
SATCAT no.22521
Websitehttp://heasarc.gsfc.nasa.gov/docs/asca/
Mission durationFinal: 8 years, 10 days
Spacecraft properties
ManufacturerNEC
Launch mass420 kg (930 lb)
Dimensions4.7 m (15 ft) long
Start of mission
Launch date20 February 1993, 02:20 (1993-02-20UTC02:20) UTC
RocketMu-3SII, mission M-3SII-7
Launch siteKagoshima Space Center, Japan
ContractorISAS
End of mission
Disposaldeorbited
Decay date2 March 2001, 14:20 (2001-03-02UTC14:21) UTC
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Eccentricity0.01
Perigee altitude523.6 km (325.3 mi)
Apogee altitude615.3 km (382.3 mi)
Inclination31.1°
Period96.09 minutes
Epoch20 February 1993
Main telescope
TypeWolter
Diameter1.2 m (3.9 ft)
Focal length3.5 m (11 ft)
Collecting area1,300 cm2 (200 sq in) @ 1 kev
600 cm2 (93 sq in) @ 7 keV
WavelengthsX-ray, SIS: 3–0.12 nm (0.4–10 keV)[1]
GIS: 1.8–0.12 nm (0.7–10 keV)[2]
 

The Advanced Satellite for Cosmology and Astrophysics (ASCA, formerly named ASTRO-D) was the fourth cosmic X-ray astronomy mission by JAXA, and the second for which the United States provided part of the scientific payload. The satellite was successfully launched on 20 February 1993. The first eight months of the ASCA mission were devoted to performance verification. Having established the quality of performance of all ASCA's instruments, the spacecraft provided science observations for the remainder of the mission. In this phase the observing program was open to astronomers based at Japanese and U.S. institutions, as well as those located in member states of the European Space Agency.[3][4]

  1. ^ "Solid-state Imaging Spectrometers". 25 June 2001. Retrieved 26 November 2016. Energy Range: 0.4 keV to 10 keV keV
  2. ^ "Gas Imaging Spectrometers". 1 April 2005. Retrieved 26 November 2016. Energy Range : 0.7 keV to 10 keV
  3. ^ Cite error: The named reference nasascimis was invoked but never defined (see the help page).
  4. ^ Tanaka, Yasuo; Inoue, Hajime; Holt, Stephen S. (June 1994). "The X-ray astronomy satellite ASCA". Publications of the Astronomical Society of Japan. 46 (3): L37–L41. Bibcode:1994PASJ...46L..37T.

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