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Kosmos 400

Mission type	ASAT target
COSPAR ID	1971-020A
SATCAT no.	05050
Spacecraft properties
Spacecraft type	DS-P1-M
Manufacturer	Yuzhnoye
Launch mass	650 kilograms (1,430 lb)
Start of mission
Launch date	18 March 1971, 21:45:00 (1971-03-18UTC21:45Z) UTC
Rocket	Kosmos-3M
Launch site	Plesetsk 132/1
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee altitude	990 kilometres (620 mi)
Apogee altitude	995 kilometres (618 mi)
Inclination	65.8 degrees
Period	105 minutes

Kosmos 400 (Russian: Космос 400 meaning Cosmos 400), also known as DS-P1-M No.3 was a satellite which was used as a target for tests of anti-satellite weapons. It was launched by the Soviet Union in 1971 as part of the Dnepropetrovsk Sputnik programme, and used as a target for Kosmos 404, as part of the Istrebitel Sputnikov programme.

Launch

It was launched aboard a Kosmos-3M carrier rocket, from Site 132/1 at the Plesetsk Cosmodrome. The launch occurred at 21:45:00 UTC on 18 March 1971.

Orbit

Kosmos 400 was placed into a low Earth orbit with a perigee of 990 kilometres (620 mi), an apogee of 995 kilometres (618 mi), 65.8 degrees of inclination, and an orbital period of 105 minutes. It was successfully intercepted and destroyed by Kosmos 404 on 4 April. As of 2009, debris is still in orbit.

Kosmos 400 was the third of the five original DS-P1-M satellites to be launched, of which all but the first were successful. Following the five initial launches the DS-P1-M satellite was replaced with a derivative, Lira.

See also

• 1971 in spaceflight

References

1. ^ Wade, Mark. "DS-P1-I". Encyclopedia Astronautica. Archived from the original on 5 January 2009. Retrieved 29 May 2009.
2. ^ Wade, Mark. "IS-A". Encyclopedia Astronautica. Archived from the original on 22 January 2012. Retrieved 29 May 2009.
3. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 29 May 2009.
4. Wade, Mark. "Kosmos 3". Encyclopedia Astronautica. Archived from the original on 6 September 2008. Retrieved 29 May 2009.
5. McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 29 May 2009.
6. Wade, Mark. "DS". Encyclopedia Astronautica. Archived from the original on 31 March 2009. Retrieved 29 May 2009.

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• Istrebitel Sputnikov program
• 1971 in spaceflight
• 1971 in the Soviet Union
• Intentionally destroyed artificial satellites
• Kosmos satellites
• Spacecraft launched in 1971
• Dnepropetrovsk Sputnik program
• Soviet Union spacecraft stubs