CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2019-0160
DELTA 1 R/B
DELTA 1 R/B (NORAD 4486) re-entered Earth’s atmosphere on 27 May 2019, after 48 years, 10 months in orbit.
Official date
NORAD number
4486
International designator
1970-055B
Object type
Rocket body
Country
United States
Launched
23 Jul 1970Cape Canaveral
Re-entered (UTC)
27 May 2019UTC calendar day
Time in orbit
48 years, 10 months17,840 days
How it ended
Re-entered (natural decay)
Latitude range
27.8°N to 27.8°SFinal inclination 27.8°
Mass
718 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 27.8°, allowed a re-entry anywhere between 27.8°N and 27.8°S.
Life in orbit
48 years, 10 monthsDELTA 1 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2019-0160
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2019-0160
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.