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SatelliteIndex

Satellite · NORAD 11101 · COSPAR 1978-103A

HEAO 2

DecayedPayloadLEOUnknown derived

Altitude now

—

object decayed

Velocity

—

Inclination

23.49°

Period

87.9 min

87.9 min

Perigee

171km

Apogee

174km

orbit unavailableNo orbital element set on file — decayed 25 Mar 1982.· Metadata updated 16 h ago

Live position

Live position

Live position unavailable — this object re-entered the atmosphere on 25 Mar 1982 and is no longer tracked.

Mission

Mission & classification

Mission type derived
Unknown
Object type
Payload
SATCAT ops status
Decayed [D]
Radar cross-section
26.5 m²

CelesTrak groups

Not listed in any CelesTrak group.

Aliases

  • HEAO 2Celestrak Satcat

Ownership

Operator & country

Operator
—
SATCAT owner code
US · United States
Country
United States US

Launch

Launch

Launch page →
Launch date
13 Nov 1978
COSPAR launch id
1978-103
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
11101
COSPAR / international designator
1978-103A
SatelliteIndex id
sat_01M28X3JMSWGAB1RH93X50S2P7
Canonical slug
heao-2-11101

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.