4V-1 No. 661
Re-entered 14 Jun 19754V-1 No. 661 (NORAD 7947, COSPAR 1975-054A) was a SU satellite that re-entered Earth's atmosphere on 14 Jun 1975, launched on 14 Jun 1975 on the 4V-1 No. 661 mission. It was operated by IKI / BABTS as part of the 4V-1 programme. The spacecraft was built by NPOL on the Venera bus, with a mass of 3,473 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.
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Frequently asked questions
What happened to 4V-1 No. 661?
4V-1 No. 661 re-entered Earth's atmosphere on 14 Jun 1975, ending a mission that began with its launch in 1975. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.
When did 4V-1 No. 661 re-enter the atmosphere?
4V-1 No. 661 re-entered on 14 Jun 1975, according to Orbital Radar's historical catalogue records.
Who operated and built 4V-1 No. 661?
4V-1 No. 661 was operated by IKI / BABTS and built by NPOL (SU).