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🛰️ SATELLITE · HISTORICAL RECORD

Apollo 15 Subsatellite

Re-entered 27 Jul 1971

Apollo 15 Subsatellite (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 is catalogued as P&FS-1. 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 Apollo 15 Subsatellite?

Apollo 15 Subsatellite 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 Apollo 15 Subsatellite re-enter the atmosphere?

Apollo 15 Subsatellite re-entered on 27 Jul 1971, according to Orbital Radar's historical catalogue records.

Who operated and built Apollo 15 Subsatellite?

Apollo 15 Subsatellite 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 2026-10-21.