CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1979-0070
D5B (CASTOR)
D5B (CASTOR) (NORAD 7802) re-entered Earth’s atmosphere on 18 February 1979, after 3 years, 9 months in orbit.
Official date
NORAD number
7802
International designator
1975-039B
Object type
Spacecraft
Country
France
Launched
17 May 1975Guiana Space Centre
Re-entered (UTC)
18 Feb 1979UTC calendar day
Time in orbit
3 years, 9 months1,373 days
How it ended
Re-entered (natural decay)
Latitude range
29.9°N to 29.9°SFinal inclination 29.9°
Mass
76 kg
Operator
CNES
Built by
Ae/Cannes
Bus
D-5B
Programme
Diamant Tech
Where it came down
Latitude band its orbit allowedExact position not recorded
No position was recorded for this re-entry. Its final orbit, inclined at 29.9°, allowed a re-entry anywhere between 29.9°N and 29.9°S.
Life in orbit
3 years, 9 monthsD5B (CASTOR)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 18 Feb 1979
2 entriesFrom the same launch
1975-039
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1979-0070
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1979-0070
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.