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🛰️ SATELLITE · HISTORICAL RECORD

Pioneer F

Re-entered 3 Mar 1972

Pioneer F (NORAD 5860, COSPAR 1972-012A) was a US satellite that re-entered Earth's atmosphere on 3 Mar 1972, launched on 3 Mar 1972 on the Pioneer F mission. It was operated by ARC as part of the Pioneer J programme. The spacecraft was built by TRW on the Pioneer F bus, with a mass of 270 kg. Like most satellites in low orbits, it was gradually slowed by atmospheric drag until re-entry. Historical record from Orbital Radar's satellite archive, cross-referenced with the live satellite catalogue.

1972
launched
1972
re-entered
0
years on orbit
270
kg mass

Lifecycle

Launched3 Mar 1972 · on the Pioneer F mission
Operational22 Jan 2003 · entered service
Retired22 Jan 2003 · end of operational service
Re-entered3 Mar 1972 · atmospheric re-entry — object destroyed

Specifications

NORAD ID5860
COSPAR1972-012A
TypeSatellite
OperatorARC
Country / StateUS
ManufacturerTRW
BusPioneer F
Mass270 kg (243 kg dry)
ProgrammePioneer J
CategoryPLAN
OrbitHEO (EEO)
Altitude186 × -22,379 km
Inclination31.5°

Frequently asked questions

What happened to Pioneer F?

Pioneer F re-entered Earth's atmosphere on 3 Mar 1972, ending a mission that began with its launch in 1972. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did Pioneer F re-enter the atmosphere?

Pioneer F re-entered on 3 Mar 1972, according to Orbital Radar's historical catalogue records.

Who operated and built Pioneer F?

Pioneer F was operated by ARC and built by TRW (US).

Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.