CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1991-0491
PEGASUS R/B
PEGASUS R/B (NORAD 21587) re-entered Earth’s atmosphere on 8 November 1991, after 3 months in orbit.
Official date
NORAD number
21587
International designator
1991-051H
Object type
Rocket body
Country
United States
Launched
17 Jul 1991Vandenberg
Re-entered (UTC)
8 Nov 1991UTC calendar day
Time in orbit
3 months114 days
How it ended
Re-entered (natural decay)
Latitude range
82.0°N to 82.0°SFinal inclination 82.0°
Mass
97 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 82.0°, allowed a re-entry anywhere between 82.0°N and 82.0°S.
Life in orbit
3 monthsPEGASUS R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 8 Nov 1991
2 entriesFrom the same launch
1991-051
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0491
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1991-0491
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.