CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1991-0475
DELTA 2 R/B(1)
DELTA 2 R/B(1) (NORAD 21554) re-entered Earth’s atmosphere on 26 October 1991, after 3 months in orbit.
Official date
NORAD number
21554
International designator
1991-047C
Object type
Rocket body
Country
United States
Launched
4 Jul 1991Cape Canaveral
Re-entered (UTC)
26 Oct 1991UTC calendar dayAlso recorded as 29 Oct 1991
Time in orbit
3 months114 days
How it ended
Re-entered (natural decay)
Latitude range
37.5°N to 37.5°SFinal inclination 37.5°
Mass
6,930 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 37.5°, allowed a re-entry anywhere between 37.5°N and 37.5°S.
Life in orbit
3 monthsDELTA 2 R/B(1)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 26 Oct 1991
3 entriesFrom the same launch
1991-047
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0475
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1991-0475
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.