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IRS 1B

retiredleo

Live LEO tracker

Browse UNCLASSIFIED

Identification

NORAD / COSPAR: 21688 / 1991-061A
Constellation: UNCLASSIFIED
Object type: PAYLOAD
Country / owner: India
Operator: Various

Launch

Launch date: 29 Aug 1991
Launch site: N/A
Launch vehicle: N/A
Decay date: In orbit

Orbital parameters

Period: 103.01 min
Inclination: 99.41°
Apoapsis: 919 km
Periapsis: 883 km
Mean altitude: 901 km
Semi-major axis: 7272 km
Eccentricity: 0.00244

Live state

Latitude: —
Longitude: —
Altitude: —
Velocity: —
Footprint area: —

TrackingLive tracker

TLE epoch: 10/22/2026, 4:12:54 PM
Source: Space-Track

1 21688U 91061A   26295.67562933 -.00000114  00000-0 -47304-4 0  9997
2 21688  99.4121 306.8136 0024396  18.6349  88.9011 13.97887318686300