CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1980-0184
M-3C R/B
M-3C R/B (NORAD 7674) re-entered Earth’s atmosphere on 17 May 1980, after 5 years, 2 months in orbit.
Official date
NORAD number
7674
International designator
1975-014B
Object type
Rocket body
Country
Japan
Launched
24 Feb 1975Uchinoura
Re-entered (UTC)
17 May 1980UTC calendar day
Time in orbit
5 years, 2 months1,909 days
How it ended
Re-entered (natural decay)
Latitude range
31.5°N to 31.5°SFinal inclination 31.5°
Mass
130 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 31.5°, allowed a re-entry anywhere between 31.5°N and 31.5°S.
Life in orbit
5 years, 2 monthsM-3C R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 17 May 1980
1 entryFrom the same launch
1975-014
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1980-0184
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1980-0184
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.