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SatelliteIndex

Satellite · NORAD 9841 · COSPAR 1977-012A

TANSEI-3 (MS-T3)

UnknownPayloadOTHERUnknown derived
  • Operator Japan
  • Constellation —
  • Country Japan

Altitude now

—

no element set

Velocity

—

Inclination

65.76°

Period

2.2 h

134.1 min

Perigee

794km

Apogee

3,805km

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
Unknown
Object type
Payload
SATCAT ops status
Non-operational [-]
Radar cross-section
1.4 m²

CelesTrak groups

Not listed in any CelesTrak group.

Aliases

  • TANSEI-3 (MS-T3)Celestrak Satcat

Ownership

Operator & country

Operator
—
SATCAT owner code
JPN · Japan
Country
Japan JP

Launch

Launch

Launch page →
Launch date
19 Feb 1977
COSPAR launch id
1977-012
Launch site
Uchinoura Space Center

Objects from the same launch · 10

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
9841
COSPAR / international designator
1977-012A
SatelliteIndex id
sat_01M28X3JMJDCJ7W2ZJQYF7GZDA
Canonical slug
tansei-3-ms-t3-9841

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.