TD-1A

TD-1A
Mission typeAstrophysics
OperatorESRO
COSPAR ID1972-014A Edit this at Wikidata
SATCAT no.05879Edit this on Wikidata
Spacecraft properties
Launch mass473 kilograms (1,043 lb)
Start of mission
Launch date12 March 1972, 01:55:08 (1972-03-12UTC01:55:08Z) UTC[1]
RocketDelta N D88
Launch siteVandenberg SLC-2E
End of mission
Decay date9 January 1980
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude525 kilometres (326 mi)[2]
Apogee altitude544 kilometres (338 mi)[2]
Inclination97.5 degrees[2]
Period95.32 minutes[2]
Epoch11 May 1972, 19:00:00 UTC[3]

TD-1A, or Thor-Delta 1A (or just TD-1), was a European astrophysical research satellite which was launched in 1972. Operated by the European Space Research Organisation, TD-1A made astronomical surveys primarily in the ultraviolet, but also using x-ray and gamma ray detectors.[4]

  1. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 12 September 2011.
  2. ^ a b c d McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 12 September 2011.
  3. ^ "NASA - NSSDCA - Spacecraft - Trajectory Details". nssdc.gsfc.nasa.gov. Retrieved 2 May 2018.
  4. ^ "TD-1A". Imagine the Universe!. NASA. 18 October 2007. Retrieved 22 August 2018.