P-11 No. 4417

Re-entered 16 Feb 1970

P-11 No. 4417 (NORAD 3915, COSPAR 1969-041B) was a US satellite that re-entered Earth's atmosphere on 16 Feb 1970, launched on 2 May 1969 on the CORONA J-44 mission. It was operated by NRO / SAFSP as part of the EHH B programme. The spacecraft was built by LMSC/ATI on the P-11 H bus, with a mass of 155 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

1970

re-entered

year on orbit

155

kg mass

Lifecycle

Launched2 May 1969 · on the CORONA J-44 mission

Operational16 Feb 1970 · entered service

Retired16 Feb 1970 · end of operational service

Re-entered16 Feb 1970 · atmospheric re-entry — object destroyed

Specifications

NORAD ID3915

COSPAR1969-041B

TypeSatellite

OperatorNRO / SAFSP

Country / StateUS

ManufacturerLMSC/ATI

BusP-11 H

Mass155 kg

ProgrammeEHH B

CategorySIG

OrbitLEO (LLEO/I)

Altitude408 × 454 km

Inclination65.7°

Frequently asked questions

What happened to P-11 No. 4417?

P-11 No. 4417 re-entered Earth's atmosphere on 16 Feb 1970, 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. 4417 re-enter the atmosphere?

P-11 No. 4417 re-entered on 16 Feb 1970, according to Orbital Radar's historical catalogue records.

Who operated and built P-11 No. 4417?

P-11 No. 4417 was operated by NRO / SAFSP and built by LMSC/ATI (US).

Launched together

CORONA J-44Re-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-44 → What is space debris? →