High Energy Astronomy Observatory 3

Space observatory. High Energy Astronomy Observatory 3 was launched on September 20, 1979 aboard a Atlas SLV-3D Centaur from Cape Canaveral & Kennedy. Latest status in GCAT: reentered (orbital decay) (Dec 7, 1981).

COSPAR 1979-082ANORAD 11532United States

Identity

Name in GCAT: HEAO 3
Common name: High Energy Astronomy Observatory 3
Payload designation: HEAO C
International designator: 1979-082A
NORAD catalog number: 11532
GCAT identifier: S11532
UN registration: ST/SG/SER.E/028

Mission

Mission type: Astronomy
Use: Civil government
Program: HEAO
Owner: NASA MSFC
Country: United States
Builder: TRW Inc.
Platform (bus): HEAO

Launch

Date: September 20, 1979 · 05:28 UTC
Launch record: 1979-082Success
Rocket: Atlas SLV-3D Centaur
Spaceport: Cape Canaveral & Kennedy · pad LC36B

Orbit and fate

Orbit class (GCAT): LLEO/I
Perigee: 481 km
Apogee: 497 km
Inclination: 43.60°
Status: Reentered (orbital decay)
Status date: December 7, 1981
Last known active: May 20, 1981
End of operations: May 20, 1981

Size

Mass: 2,860 kg
Dry mass: 2,860 kg
Length: 5.4 m
Diameter: 2.70 m
Span: 5.4 m

Source: GCAT payload, deep-space and lander catalogs, Jonathan C. McDowell (CC BY 4.0); Wikidata Q1190799 (CC0).