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SatelliteIndex

Satellite · NORAD 5176 · COSPAR 1971-036A

SAN MARCO 3

DecayedPayloadLEOUnknown derived
  • Operator Italy
  • Constellation —
  • Country Italy

Altitude now

—

object decayed

Velocity

—

Inclination

3.23°

Period

93.6 min

93.6 min

Perigee

225km

Apogee

679km

orbit unavailableNo orbital element set on file — decayed 29 Nov 1971.· Metadata updated 9 h ago

Live position

Live position

Live position unavailable — this object re-entered the atmosphere on 29 Nov 1971 and is no longer tracked.

Mission

Mission & classification

Mission type derived
Unknown
Object type
Payload
SATCAT ops status
Decayed [D]
Radar cross-section
—

CelesTrak groups

Not listed in any CelesTrak group.

Aliases

  • SAN MARCO 3Celestrak Satcat

Ownership

Operator & country

Operator
—
SATCAT owner code
IT · Italy
Country
Italy IT

Launch

Launch

Launch page →
Launch date
24 Apr 1971
COSPAR launch id
1971-036
Launch site
San Marco platform, Formosa Bay

Objects from the same launch

No other catalogued object is linked to this launch.

Change log

History

No changes recorded since first ingestion on 11 Sept 2026 18:54 UTC. Status, orbit class, name and ownership changes are logged here as sources are re-ingested.

Regulatory

UN registration

UN Register of Objects Launched into Outer Space (UNOOSA) — connector planned, not yet ingested; registration unavailable

Transparency

Sources & provenance

All sources →

No source is linked to this record yet — the catalogue row exists but no provenance entry has been written for it.

Field provenance

No field-level provenance recorded.

Timeline

Events

All events →

No events detected for this object yet. Launches, decays and orbit changes are generated by the derived-analytics connector.

Reference

Identifiers

NORAD catalogue number
5176
COSPAR / international designator
1971-036A
SatelliteIndex id
sat_01M28X3JK63JBBC6B3A4YD98JR
Canonical slug
san-marco-3-5176

Orbit class, mission type and constellation membership are derived by SatelliteIndex (Unknown) — see the methodology. Positions are propagated estimates, not tracking measurements; never use them for conjunction assessment.