Bion No. 4L
Re-entered 22 Aug 1977Bion No. 4L (NORAD 10172, COSPAR 1977-074A) was a SU satellite that re-entered Earth's atmosphere on 22 Aug 1977, launched on 3 Aug 1977 on the Bion No. 4 mission. It was operated by IMBP / TSSKB as part of the Bion programme. The spacecraft was built by TSSKB on the Bion bus, with a mass of 2,040 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 Bion No. 4L?
Bion No. 4L re-entered Earth's atmosphere on 22 Aug 1977, ending a mission that began with its launch in 1977. Objects in low orbits are gradually slowed by atmospheric drag until they fall back and burn up on re-entry.
When did Bion No. 4L re-enter the atmosphere?
Bion No. 4L re-entered on 22 Aug 1977, according to Orbital Radar's historical catalogue records.
Who operated and built Bion No. 4L?
Bion No. 4L was operated by IMBP / TSSKB and built by TSSKB (SU).