HomeLibraryRe-entered SatellitesP-11 No. 4422
🛰️ SATELLITE · HISTORICAL RECORD

P-11 No. 4422

Re-entered 10 Nov 1971

P-11 No. 4422 (NORAD 4343, COSPAR 1970-016B) was a US satellite that re-entered Earth's atmosphere on 10 Nov 1971, launched on 4 Mar 1970 on the CORONA CR-10 mission. It was operated by NRO / SAFSP as part of the EHH B programme. The spacecraft was built by LMSC/ESL1 on the P-11 H bus, with a mass of 146 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.

1970
launched
1971
re-entered
1
year on orbit
146
kg mass

Lifecycle

Launched4 Mar 1970 · on the CORONA CR-10 mission
Operational1 Oct 1971 · entered service
Retired10 Nov 1971 · end of operational service
Re-entered10 Nov 1971 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4343
COSPAR1970-016B
TypeSatellite
OperatorNRO / SAFSP
Country / StateUS
ManufacturerLMSC/ESL1
BusP-11 H
Mass146 kg
ProgrammeEHH B
CategorySIG
OrbitLEO (LLEO/P)
Altitude435 × 503 km
Inclination88.1°

Frequently asked questions

What happened to P-11 No. 4422?

P-11 No. 4422 re-entered Earth's atmosphere on 10 Nov 1971, ending a mission that began with its launch in 1970. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.

When did P-11 No. 4422 re-enter the atmosphere?

P-11 No. 4422 re-entered on 10 Nov 1971, according to Orbital Radar's historical catalogue records.

How long was P-11 No. 4422 operational?

P-11 No. 4422 was operational for roughly 1 months, from 1 Oct 1971 to 10 Nov 1971.

Who operated and built P-11 No. 4422?

P-11 No. 4422 was operated by NRO / SAFSP and built by LMSC/ESL1 (US).

Launched together

CORONA CR-10Re-entered 1970
Historical record from the Orbital Radar satellite archive. Sources & methodology: data sources. Accessed 2026-09-06.