CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1979-0122
M-3H R/B
M-3H R/B (NORAD 9842) re-entered Earth’s atmosphere on 20 March 1979, after 2 years, 1 month in orbit.
Official date
NORAD number
9842
International designator
1977-012B
Object type
Rocket body
Country
Japan
Launched
19 Feb 1977Uchinoura
Re-entered (UTC)
20 Mar 1979UTC calendar dayAlso recorded as 21 Mar 1979
Time in orbit
2 years, 1 month759 days
How it ended
Re-entered (natural decay)
Latitude range
65.5°N to 65.5°SFinal inclination 65.5°
Mass
164 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 65.5°, allowed a re-entry anywhere between 65.5°N and 65.5°S.
Life in orbit
2 years, 1 monthM-3H R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 20 Mar 1979
1 entry
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1979-0122
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1979-0122
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.