|Mission type||ABM radar target|
|Launch mass||325 kilograms (717 lb)|
|Start of mission|
|Launch date||21 December 1965, 06:14UTC|
|Launch site||Kapustin Yar 86/1|
|End of mission|
|Decay date||12 July 1966|
|Perigee||255 kilometres (158 mi)|
|Apogee||510 kilometres (320 mi)|
Kosmos 101 (Russian: Космос 101 meaning Cosmos 101), also known as DS-P1-Yu No.4 was a Soviet satellite which was used as a radar calibration target for tests of anti-ballistic missiles. It was built by the Yuzhnoye Design Bureau, and launched in 1965 as part of the Dnepropetrovsk Sputnik programme.
Kosmos 101 separated from its carrier rocket into a low Earth orbit with an apogee of 510 kilometres (320 mi), a perigee of 255 kilometres (158 mi), 48.8 degrees of inclination, and an orbital period of 92.20 minutes. It decayed from orbit on 12 July 1966. Kosmos 101 was the fourth of seventy nine DS-P1-Yu satellites to be launched, of which all but seven were successful.
- Krebs, Gunter. "DS-P1-Yu (11F618)". Gunter's Space Page. Retrieved 9 August 2009.
- Wade, Mark. "DS-P1-Yu". Encyclopedia Astronautica. Retrieved 9 August 2009.
- McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 9 August 2009.
- Wade, Mark. "Kosmos 2". Encyclopedia Astronautica. Retrieved 9 August 2009.
- McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 9 August 2009.
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