CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1976-0128
SAN MARCO 4 (C-2)
SAN MARCO 4 (C-2) (NORAD 7154) re-entered Earth’s atmosphere on 4 May 1976, after 2 years, 2 months in orbit.
Official date
NORAD number
7154
International designator
1974-009A
Object type
Spacecraft
Country
Italy
Launched
18 Feb 1974San Marco platform
Re-entered (UTC)
4 May 1976UTC calendar day
Time in orbit
2 years, 2 months806 days
How it ended
Re-entered (natural decay)
Latitude range
2.9°N to 2.9°SFinal inclination 2.9°
Mass
176 kg
Operator
ISRC
Built by
CRA
Bus
San Marco
Programme
San Marco
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 2.9°, allowed a re-entry anywhere between 2.9°N and 2.9°S.
Life in orbit
2 years, 2 monthsSAN MARCO 4 (C-2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 4 May 1976
1 entryFrom the same launch
1974-009
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1976-0128
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1976-0128
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.