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// space science · 1968

Explorer 39

NASA satellite of the Explorer program. Explorer 39 was launched on August 8, 1968 aboard a Scout B from Vandenberg. Latest status in GCAT: reentered (orbital decay) (Jun 22, 1981).

COSPAR 1968-066ANORAD 3337United States

Identity

Name in GCAT
Explorer 39
Payload designation
AD-C
International designator
1968-066A
NORAD catalog number
3337
GCAT identifier
S03337
UN registration
A/AC.105/INF.196

Mission

Mission type
Space science
Use
Civil government
Program
Explorer AD
Country
United States
Builder
G T Schjeldahl Inc.
Platform (bus)
12' Sphere

Launch

Date
August 8, 1968 · 20:12 UTC
Launch record
1968-066Success
Rocket
Scout B
Spaceport
Vandenberg · pad SLC5

Orbit and fate

Orbit class (GCAT)
LEO/I
Perigee
684 km
Apogee
2,514 km
Inclination
80.69°
Status
Reentered (orbital decay)
Status date
June 22, 1981
Last known active
June 1971
End of operations
June 1971

Size

Mass
16 kg
Dry mass
16 kg
Length
3.7 m
Diameter
3.70 m
Span
3.7 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q49891 (CC0).