Kosmos_421

Kosmos 421

Kosmos 421

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Kosmos 421 (Russian: Космос 421 meaning Cosmos 421), known before launch as DS-P1-Yu No.48, was a Soviet satellite which was launched in 1971 as part of the Dnepropetrovsk Sputnik programme. It was a 325-kilogram (717 lb) spacecraft, which was built by the Yuzhnoye Design Bureau, and was used as a radar calibration target for anti-ballistic missile tests.[1]

Quick Facts Mission type, COSPAR ID ...

Launch

Kosmos 421 was successfully launched into low Earth orbit on 19 May 1971, with the rocket lifting-off at 10:20:00 UTC.[2] The launch took place from Site 133/1 at the Plesetsk Cosmodrome,[3] and used a Kosmos-2I 63SM carrier rocket.

Orbit

Upon reaching orbit, it was assigned its Kosmos designation, and received the International Designator 1971-044A.[4]

Kosmos 421 was the forty-second of seventy nine DS-P1-Yu satellites to be launched,[1] and the thirty-eighth of seventy two to successfully reach orbit.[5] It was operated in an orbit with a perigee of 266 kilometres (165 mi), an apogee of 445 kilometres (277 mi), 70.9 degrees of inclination, and an orbital period of 91.65 minutes.[1][6] It remained in orbit until it decayed and reentered the atmosphere on 8 November 1971.[6]

See also

References

  1. [1]
    Wade, Mark. "DS-P1-Yu". Encyclopedia Astronautica. Archived from the original on 2 June 2012. Retrieved 15 August 2009.
  2. [2]
    Wade, Mark. "Kosmos 2". Encyclopedia Astronautica. Archived from the original on 18 June 2012. Retrieved 15 August 2009.
  3. [3]
    McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 15 August 2009.
  4. [4]
    "Cosmos 421". NSSDC Master Catalog. US National Space Science Data Center. Retrieved 15 August 2009.
  5. [5]
    Krebs, Gunter. "DS-P1-Yu (11F618)". Gunter's Space Page. Retrieved 15 August 2009.
  6. [6]
    McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 15 August 2009.


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