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// astronomy · 1975

Orbiting Solar Observatory 8

Solar space observatory. Orbiting Solar Observatory 8 was launched on June 21, 1975 aboard a Delta 1910 from Cape Canaveral & Kennedy. Latest status in GCAT: reentered (orbital decay) (Jul 9, 1986).

COSPAR 1975-057ANORAD 7970United States

Identity

Name in GCAT
OSO 8
Common name
Orbiting Solar Observatory 8
Payload designation
OSO I
International designator
1975-057A
NORAD catalog number
7970
GCAT identifier
S07970
UN registration
A/AC.105/INF.324

Mission

Mission type
Astronomy
Use
Civil government
Program
OSO
Owner
GSFC
Country
United States
Builder
Hughes Space and Comms. Co (Hughes Satellite Systems)
Platform (bus)
HS-331

Launch

Date
June 21, 1975 · 11:43 UTC
Launch record
1975-057Success
Rocket
Delta 1910
Spaceport
Cape Canaveral & Kennedy · pad LC17B

Orbit and fate

Orbit class (GCAT)
LLEO/I
Perigee
540 km
Apogee
556 km
Inclination
32.95°
Status
Reentered (orbital decay)
Status date
July 9, 1986
Last known active
Sep 30, 1978
End of operations
Sep 30, 1978

Size

Mass
1,064 kg
Dry mass
1,064 kg
Length
0.7 m
Diameter
1.50 m
Span
1.5 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q4045602 (CC0).