CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1979-0319
Skylab
Catalogue name SKYLAB 1
Skylab (NORAD 6633) re-entered Earth’s atmosphere on 11 July 1979 over Australia, after 6 years, 1 month in orbit.
Official date
NORAD number
6633
International designator
1973-027A
Object type
Spacecraft
Country
United States
Launched
14 May 1973Cape Canaveral
Re-entered (UTC)
11 Jul 1979Recorded time 16:37 UTC
Time in orbit
6 years, 1 month2,249 days
How it ended
Re-entered (natural decay)
Latitude range
50.0°N to 50.0°SFinal inclination 50.0°
Mass
33,956 kg
Operator
NASA MSFC
Built by
MDAC-HB
Bus
S-IVB OWS
Programme
Saturn V
Where it came down
Recorded positionRecorded position 31.0°S, 124.0°E at 16:37 UTC. Its final orbit, inclined at 50.0°, allowed a re-entry anywhere between 50.0°N and 50.0°S.
Life in orbit
6 years, 1 monthSkylab’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1973-027
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1979-0319
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1979-0319
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.