CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1973-0018
LUNA 21
LUNA 21 (NORAD 6333) landed on the Moon on 15 January 1973, 7 days after launch.
Official date
NORAD number
6333
International designator
1973-001A
Object type
Spacecraft
Country
USSR
Launched
8 Jan 1973Baikonur Cosmodrome
Flight ended (UTC)
15 Jan 1973Recorded time 22:35 UTC
Time in orbit
7 days7 days
How it ended
Landed on the Moon
Final destination
The Moon
Mass
2,944 kg
Operator
IKI / Babakin
Built by
Lavochkin
Bus
Luna E-8
Programme
E-8
Life in orbit
7 daysAlso ended on 15 Jan 1973
1 entryFrom the same launch
1973-001
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1973-0018
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1973-0018
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.