CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1981-0053
DELTA 1 R/B(2)
DELTA 1 R/B(2) (NORAD 9787) re-entered Earth’s atmosphere on 6 February 1981, after 4 years in orbit.
Official date
NORAD number
9787
International designator
1977-005C
Object type
Rocket body
Country
United States
Launched
28 Jan 1977Cape Canaveral
Re-entered (UTC)
6 Feb 1981UTC calendar day
Time in orbit
4 years1,470 days
How it ended
Re-entered (natural decay)
Latitude range
26.3°N to 26.3°SFinal inclination 26.3°
Mass
1,123 kg
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 26.3°, allowed a re-entry anywhere between 26.3°N and 26.3°S.
Life in orbit
4 yearsDELTA 1 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 6 Feb 1981
1 entry
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1981-0053
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1981-0053
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.