Explorer 20

NASA satellite of the Explorer program. Explorer 20 was launched on August 25, 1964 aboard a Scout X-4 from Vandenberg. Latest status in GCAT: in orbit.

COSPAR 1964-051ANORAD 870United States

Identity

Name in GCAT: Explorer 20
Payload designation: NASA S-48
International designator: 1964-051A
NORAD catalog number: 870
GCAT identifier: S00870
UN registration: A/AC.105/INF.081

Mission

Mission type: Space science
Use: Civil government
Program: Explorer IE
Owner: GSFC
Country: United States
Builder: Cutler-Hammer Airborne Instruments Laboratory
Platform (bus): S-48

Launch

Date: August 25, 1964 · 13:43 UTC
Launch record: 1964-051Success
Rocket: Scout X-4
Spaceport: Vandenberg · pad PALC-D

Orbit and fate

Orbit class (GCAT): LEO/I
Perigee: 869 km
Apogee: 1,018 km
Inclination: 79.90°
Status: In orbit
Last known active: July 1966
End of operations: July 1966

Size

Mass: 44 kg
Dry mass: 44 kg
Length: 0.8 m
Diameter: 0.70 m
Span: 37.0 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q3736073 (CC0).