P-11 No. 4419

Re-entered 16 May 1971

P-11 No. 4419 (NORAD 4103, COSPAR 1969-079B) was a US satellite that re-entered Earth's atmosphere on 16 May 1971, launched on 22 Sep 1969 on the CORONA J-46 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 135 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.

1969

launched

1971

re-entered

years on orbit

135

kg mass

Lifecycle

Launched22 Sep 1969 · on the CORONA J-46 mission

Operational10 May 1971 · entered service

Retired10 May 1971 · end of operational service

Re-entered16 May 1971 · atmospheric re-entry — object destroyed

Specifications

NORAD ID4103

COSPAR1969-079B

TypeSatellite

OperatorNRO / SAFSP

Country / StateUS

ManufacturerLMSC/ESL1

BusP-11 H

Mass135 kg

ProgrammeEHH B

CategorySIG

OrbitLEO (LLEO/P)

Altitude484 × 491 km

Inclination85.2°

Frequently asked questions

What happened to P-11 No. 4419?

P-11 No. 4419 re-entered Earth's atmosphere on 16 May 1971, ending a mission that began with its launch in 1969. 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. 4419 re-enter the atmosphere?

P-11 No. 4419 re-entered on 16 May 1971, according to Orbital Radar's historical catalogue records.

Who operated and built P-11 No. 4419?

P-11 No. 4419 was operated by NRO / SAFSP and built by LMSC/ESL1 (US).

Launched together

CORONA J-46Re-entered 1969

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

Browse the live satellite directory → Re-entered satellites archive → Launch record: CORONA J-46 → What is space debris? →