P-11 No. 4421
Re-entered 8 Mar 1974P-11 No. 4421 (NORAD 4406, COSPAR 1970-040B) was a US satellite that re-entered Earth's atmosphere on 8 Mar 1974, launched on 20 May 1970 on the CORONA CR-11 mission. It was operated by NRO / SAFSP as part of the EHH B programme. The spacecraft was built by LMSC/CHAIL on the P-11 H bus, with a mass of 141 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.
Lifecycle
Specifications
Frequently asked questions
What happened to P-11 No. 4421?
P-11 No. 4421 re-entered Earth's atmosphere on 8 Mar 1974, 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. 4421 re-enter the atmosphere?
P-11 No. 4421 re-entered on 8 Mar 1974, according to Orbital Radar's historical catalogue records.
Who operated and built P-11 No. 4421?
P-11 No. 4421 was operated by NRO / SAFSP and built by LMSC/CHAIL (US).