CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1991-0311
DELTA 1 R/B(1)
DELTA 1 R/B(1) (NORAD 17562) re-entered Earth’s atmosphere on 4 August 1991, after 4 years, 5 months in orbit.
Official date
NORAD number
17562
International designator
1987-022B
Object type
Rocket body
Country
United States
Launched
26 Feb 1987Cape Canaveral
Re-entered (UTC)
4 Aug 1991UTC calendar day
Time in orbit
4 years, 5 months1,620 days
How it ended
Re-entered (natural decay)
Latitude range
21.7°N to 21.7°SFinal inclination 21.7°
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 21.7°, allowed a re-entry anywhere between 21.7°N and 21.7°S.
Life in orbit
4 years, 5 monthsDELTA 1 R/B(1)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 4 Aug 1991
1 entry
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0311
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1991-0311
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.