CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1991-0460
DELTA 1 R/B(2)
DELTA 1 R/B(2) (NORAD 10857) re-entered Earth’s atmosphere on 23 October 1991, after 13 years, 5 months in orbit.
Official date
NORAD number
10857
International designator
1978-044C
Object type
Rocket body
Country
United States
Launched
11 May 1978Cape Canaveral
Re-entered (UTC)
23 Oct 1991UTC calendar day
Time in orbit
13 years, 5 months4,913 days
How it ended
Re-entered (natural decay)
Latitude range
—
Mass
1,123 kg
Where it came down
Not on recordNo position was recorded for this re-entry. Its final orbit is not on record.
Life in orbit
13 years, 5 monthsDELTA 1 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 23 Oct 1991
1 entry
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0460
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1991-0460
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.