CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1979-0178
DELTA 1 R/B(1)
DELTA 1 R/B(1) (NORAD 11154) re-entered Earth’s atmosphere on 23 April 1979, after 4 months in orbit.
Official date
NORAD number
11154
International designator
1978-116B
Object type
Rocket body
Country
United States
Launched
16 Dec 1978Cape Canaveral
Re-entered (UTC)
23 Apr 1979UTC calendar day
Time in orbit
4 months128 days
How it ended
Re-entered (natural decay)
Latitude range
28.3°N to 28.3°SFinal inclination 28.3°
Mass
845 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 28.3°, allowed a re-entry anywhere between 28.3°N and 28.3°S.
Life in orbit
4 monthsDELTA 1 R/B(1)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 23 Apr 1979
1 entryFrom the same launch
1978-116
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1979-0178
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1979-0178
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.