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// astronomy · 1979

P78-1

Artificial satellite, us department of Defense. P78-1 was launched on February 24, 1979 aboard a Atlas F/OIS from Vandenberg. Latest status in GCAT: collided (Sep 13, 1985).

COSPAR 1979-017ANORAD 11278United States

Identity

Name in GCAT
P78-1
Payload designation
STP P78-1
Other names
Solwind
International designator
1979-017A
NORAD catalog number
11278
GCAT identifier
S11278
UN registration
ST/SG/SER.E/021

Mission

Mission type
Astronomy
Use
Civil government
Program
STP1
Country
United States
Builder
Ball Aerospace
Platform (bus)
OSO

Launch

Date
February 24, 1979 · 08:20 UTC
Launch record
1979-017Success
Rocket
Atlas F/OIS
Spaceport
Vandenberg · pad SLC3W

Orbit and fate

Orbit class (GCAT)
LLEO/S
Perigee
558 km
Apogee
601 km
Inclination
97.66°
Status
Collided
Status date
September 13, 1985
Last known active
Sep 13, 1985
End of operations
Sep 13, 1985

Size

Mass
875 kg
Dry mass
875 kg
Length
2.8 m
Diameter
1.80 m
Span
2.8 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q54370 (CC0).