Satellite · NORAD 21688 · COSPAR 1991-061A
IRS-1B
- Operator India
- Constellation —
- Country India
Altitude now
—
no element set
Velocity
—
Inclination
99.41°
Period
103.0 min
103.0 min
Perigee
883km
Apogee
919km
orbit unavailableNo orbital element set on file.· Metadata updated 9 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
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- IND · India
- Country
- India IN
Launch
Launch
- Launch date
- 29 Aug 1991
- COSPAR launch id
- 1991-061
- Launch site
- Baikonur Cosmodrome (Tyuratam)
Objects from the same launch · 1
- SL-3 R/B21689Rocket bodyInactive
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
Transparency
Sources & provenance
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
No events detected for this object yet. Launches, decays and orbit changes are generated by the derived-analytics connector.
Reference
Identifiers
- NORAD catalogue number
- 21688
- COSPAR / international designator
- 1991-061A
- SatelliteIndex id
- sat_01M28X3JPMVTQKJ42K3VE70XQ8
- Canonical slug
- irs-1b-21688
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.