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🛰️ SATELLITE · HISTORICAL RECORD

P&FS-1

Re-entered 27 Jul 1971

P&FS-1 (NORAD 5377, COSPAR 1971-063D) was a US satellite that re-entered Earth's atmosphere on 27 Jul 1971, launched on 26 Jul 1971 on the Apollo CM-112 mission. It was operated by MSC as part of the ApolloSS programme. The spacecraft was built by TRW on the Apollo SS bus, with a mass of 37 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.

1971
launched
1971
re-entered
0
years on orbit
37
kg mass

Lifecycle

Launched26 Jul 1971 · on the Apollo CM-112 mission
Operational23 Aug 1973 · entered service
Retired23 Aug 1973 · end of operational service
Re-entered27 Jul 1971 · atmospheric re-entry — object destroyed

Specifications

NORAD ID5377
COSPAR1971-063D
TypeSatellite
OperatorMSC
Country / StateUS
ManufacturerTRW
BusApollo SS
Mass37 kg
ProgrammeApolloSS
CategorySCI
OrbitBEO (CLO)
Altitude203 × 532,310 km
Inclination29.7°

Frequently asked questions

What happened to P&FS-1?

P&FS-1 re-entered Earth's atmosphere on 27 Jul 1971, ending a mission that began with its launch in 1971. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did P&FS-1 re-enter the atmosphere?

P&FS-1 re-entered on 27 Jul 1971, according to Orbital Radar's historical catalogue records.

Who operated and built P&FS-1?

P&FS-1 was operated by MSC and built by TRW (US).

Launched together

Apollo CM-112Re-entered 1971LM 10 ASRe-entered 1971
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.