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SatelliteIndex

Satellite · NORAD 10557 · COSPAR 1978-002A

INTELSAT 4A-F3

UnknownPayloadGEOCommunications derived

Altitude now

—

no element set

Velocity

—

Inclination

8.84°

Period

1.0 d

1,441.2 min

Perigee

35,866km

Apogee

35,907km

orbit unavailableNo orbital element set on file.· Metadata updated 18 h ago

Live position

Live position

Live position unavailable — no public orbital element set exists for this object (it may be classified, untracked or too small to catalogue).

Mission

Mission & classification

Mission type derived
Communications
Object type
Payload
SATCAT ops status
Non-operational [-]
Radar cross-section
10.0 m²
Constellation membership derived
Intelsat fleet via name_pattern

CelesTrak groups

Not listed in any CelesTrak group.

Aliases

  • INTELSAT 4A-F3Celestrak Satcat

Ownership

Operator & country

Operator
Intelsat
SATCAT owner code
ITSO · Intelsat
Country
United States US

Launch

Launch

Launch page →
Launch date
07 Jan 1978
COSPAR launch id
1978-002
Launch site
Cape Canaveral / Kennedy Space Center (Eastern Range), Florida

Objects from the same launch · 1

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
10557
COSPAR / international designator
1978-002A
SatelliteIndex id
sat_01M28X3JMPJS2N5XY18A138HZC
Canonical slug
intelsat-4a-f3-10557

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