CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1971-0289

SAN MARCO 3

SAN MARCO 3 (NORAD 5176) re-entered Earth’s atmosphere on 29 November 1971, after 7 months in orbit.

Official date
NORAD number
5176
International designator
1971-036A
Object type
Spacecraft
Country
Italy
Launched
24 Apr 1971San Marco platform
Re-entered (UTC)
29 Nov 1971UTC calendar day
Time in orbit
7 months219 days
How it ended
Re-entered (natural decay)
Latitude range
—
Mass
180 kg
Operator
ISRC
Built by
CRA
Bus
San Marco
Programme
San Marco

Where it came down

Not on record

No position was recorded for this re-entry. Its final orbit is not on record.

Life in orbit

7 months

SAN MARCO 3’s lowest and highest points above Earth, week by week, from its tracking history.

Also ended on 29 Nov 1971

1 entry
1971-0290SL-6 DEB
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1971-0289
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