Kosmos 633


Kosmos 633
Mission typeABM radar target
COSPAR ID1974-010A
SATCAT no.07187Edit this on Wikidata
Spacecraft properties
Spacecraft typeDS-P1-Yu
Launch mass400 kilograms (880 lb)
Start of mission
Launch date27 February 1974, 11:05 (1974-02-27UTC11:05Z) UTC
RocketKosmos-2I 63SM
Launch sitePlesetsk 133/1
End of mission
Decay date4 October 1974 (1974-10-05)
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Perigee altitude265 kilometres (165 mi)
Apogee altitude472 kilometres (293 mi)
Inclination70.9 degrees
Period91.9 minutes

Kosmos 633 (Russian: Космос 633 meaning Cosmos 633), also known as DS-P1-Yu No.71, was a Soviet satellite which was launched in 1974 as part of the Dnepropetrovsk Sputnik programme. It was a 400-kilogram (880 lb) spacecraft, which was built by the Yuzhnoye Design Bureau, and was used as a radar calibration target for anti-ballistic missile tests.[1]

The launch of Kosmos 633 occurred at 11:05 UTC on 27 February 1974, and resulted in the satellite successfully reaching low Earth orbit.[2] The launch took place from Site 133/1 at the Plesetsk Cosmodrome,[3] and used a Kosmos-2I 63SM carrier rocket. Upon reaching orbit, the satellite was assigned its Kosmos designation, and received the International Designator 1974-010A.[4] The North American Aerospace Defense Command assigned it the catalogue number 07187.

Kosmos 633 was the sixty-eighth of seventy nine DS-P1-Yu satellites to be launched,[1] and the sixty-second of seventy two to successfully reach orbit.[5] It was operated in an orbit with a perigee of 265 kilometres (165 mi), an apogee of 472 kilometres (293 mi), 70.9 degrees of inclination, and an orbital period of 91.9 minutes.[6] It remained in orbit until it decayed and reentered the atmosphere on 4 October 1974.[6]

See also


  1. ^ a b Wade, Mark. "DS-P1-Yu". Encyclopedia Astronautica. Archived from the original on 18 May 2012. Retrieved 1 September 2009.
  2. ^ Wade, Mark. "Kosmos 2". Encyclopedia Astronautica. Archived from the original on 8 July 2012. Retrieved 1 September 2009.
  3. ^ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 1 September 2009.
  4. ^ "Cosmos 633". NSSDC Master Catalog. US National Space Science Data Center. Retrieved 1 September 2009.
  5. ^ Krebs, Gunter. "DS-P1-Yu (11F618)". Gunter's Space Page. Retrieved 1 September 2009.
  6. ^ a b McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 1 September 2009.