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// space science · 1973

Explorer 50

NASA satellite of the Explorer program. Explorer 50 was launched on October 26, 1973 aboard a Delta 1604 from Cape Canaveral & Kennedy. Latest status in GCAT: left Earth orbit for deep space (Oct 26, 1973).

COSPAR 1973-078ANORAD 6893United States

Identity

Name in GCAT
IMP 8
Common name
Explorer 50
Payload designation
IMP J
Other names
Explorer 50
International designator
1973-078A
NORAD catalog number
6893
GCAT identifier
S06893
UN registration
A/AC.105/INF.286

Mission

Mission type
Space science
Use
Civil government
Program
IMP
Owner
GSFC
Country
United States
Builder
NASA Goddard Space Flight Center
Platform (bus)
IMP

Launch

Date
October 26, 1973 · 02:26 UTC
Launch record
1973-078Success
Rocket
Delta 1604
Spaceport
Cape Canaveral & Kennedy · pad LC17B

Orbit and fate

Orbit class (GCAT)
DSO
Perigee
215,092 km
Apogee
215,092 km
Inclination
19.70°
Status
Left Earth orbit for deep space
Status date
October 26, 1973
Last known active
Oct 26, 2001
End of operations
Oct 26, 2001

Size

Mass
273 kg
Dry mass
273 kg
Total mass with attached objects
398 kg
Length
1.6 m
Diameter
1.30 m
Span
125.0 m

Deep space

Deep-space catalog entry
D00513
Final central body
Earth
Phase start
October 26, 1973
Phase outcome
In orbit
Destination
LOST

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q12015954 (CC0).