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🛰️ SATELLITE · HISTORICAL RECORD

Pioneer 10

Re-entered 3 Mar 1972

Pioneer 10 (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 is catalogued as Pioneer F. 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 10?

Pioneer 10 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 10 re-enter the atmosphere?

Pioneer 10 re-entered on 3 Mar 1972, according to Orbital Radar's historical catalogue records.

Who operated and built Pioneer 10?

Pioneer 10 was operated by ARC and built by TRW (US).

Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-10-22.