|Mission type||ABM radar target|
|Launch mass||300 kilograms (660 lb)|
|Start of mission|
|Launch date||16:00:08, March 28, 1969 (UTC)UTC|
|Launch site||Plesetsk 133/1|
|End of mission|
|Decay date||7 February 1970|
|Perigee altitude||273 kilometres (170 mi)|
|Apogee altitude||780 kilometres (480 mi)|
Kosmos 275 (Russian: Космос 275 meaning Cosmos 275), also known as DS-P1-I No.5 was a satellite which was used as a radar target for anti-ballistic missile tests. It was launched by the Soviet Union in 1969 as part of the Dnepropetrovsk Sputnik programme.
Kosmos 275 was placed into a low Earth orbit with a perigee of 273 kilometres (170 mi), an apogee of 780 kilometres (480 mi), 71 degrees of inclination, and an orbital period of 95.2 minutes. It decayed from orbit on 7 February 1970.