Prognoz 4

The spacecraft was a contribution to the International Magnetospheric Study (IMS) program. Prognoz 4 was launched on December 22, 1975 aboard a Molniya 8K78M from Baikonur. Latest status in GCAT: left Earth orbit for deep space (Dec 22, 1975).

COSPAR 1975-122ANORAD 8510Soviet Union

Identity

Name in GCAT: Prognoz-4
Common name: Prognoz 4
Payload designation: SO-M No. 504
International designator: 1975-122A
NORAD catalog number: 8510
GCAT identifier: S08510
UN registration: A/AC.105/INF.336

Mission

Mission type: Astronomy
Use: Civil government
Program: SO-M
Owner: IKI
Country: Soviet Union
Builder: NPO Lavochkin
Platform (bus): SO-M

Launch

Date: December 22, 1975 · 02:08 UTC
Launch record: 1975-122Success
Rocket: Molniya 8K78M
Spaceport: Baikonur · pad LC31

Orbit and fate

Orbit class (GCAT): LLEO/I
Perigee: 231 km
Apogee: 464 km
Inclination: 65.04°
Status: Left Earth orbit for deep space
Status date: December 22, 1975
Last known active: Mar 25, 1976
End of operations: Mar 25, 1976

Size

Mass: 905 kg
Dry mass: 905 kg
Length: 2.0 m
Diameter: 2.50 m
Span: 10.0 m

Deep space

Deep-space catalog entry: D00558
Final central body: Earth
Phase start: December 22, 1975
Phase outcome: Reentered (orbital decay) · December 18, 1977

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q111854567 (CC0).