Explorer 41

NASA satellite of the Explorer program. Explorer 41 was launched on June 21, 1969 aboard a Thor Delta E1 from Vandenberg. Latest status in GCAT: left Earth orbit for deep space (Jun 22, 1969).

COSPAR 1969-053ANORAD 3990United States

Identity

Name in GCAT: IMP 5
Common name: Explorer 41
Payload designation: IMP G
Other names: Explorer 41
International designator: 1969-053A
NORAD catalog number: 3990
GCAT identifier: S03990
UN registration: A/AC.105/INF.210

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: June 21, 1969 · 08:47 UTC
Launch record: 1969-053Partial · 0.75
Rocket: Thor Delta E1
Spaceport: Vandenberg · pad SLC2W

Orbit and fate

Orbit class (GCAT): DSO
Perigee: 640 km
Apogee: 176,219 km
Inclination: 87.13°
Status: Left Earth orbit for deep space
Status date: June 22, 1969
Last known active: Dec 23, 1972
End of operations: Dec 23, 1972

Size

Mass: 79 kg
Dry mass: 79 kg
Length: 0.3 m
Diameter: 0.70 m
Span: 4.0 m

Deep space

Deep-space catalog entry: D00254
Final central body: Earth
Phase start: June 22, 1969
Phase outcome: Reentered (orbital decay) · December 23, 1972

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q11975387 (CC0).