Key statistics
Satellite IRS 1A at a glance.
Uptime
13736
Days in orbit
Revolutions
≈ 14.0
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for IRS 1A.
Object identification
Identified? True
Debris? False
Object name: IRS 1A
International designator: 1988-021A
Object number (NORAD): 18960
Object ID (CCSDS): 18960
Country: INDIA (IND)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 103.068 minutes
Inclination: 98.8873 deg
SMA: 7281.883 km
Apoapsis: 914.75 km
Periapsis: 892.746 km
RAAN: 355.8601 deg
Eccentricy: 0.00151083
Argument of periapsis: 136.0411 deg
Mean anomaly: 37.2417 deg
Mean motion: 13.9713132 rev/day
Mean motion (dot): 0.00000213 rev/day2
B* drag term: 0.0001822583 1/REarth
Two-line elements (TLE)
Creation date: Oct. 25, 2025, 3:11 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 24, 2025, 9:40 p.m. UTC
TLE line 0: 0 IRS 1A
TLE line 1: 1 18960U 88021A 25297.90329957 .00000213 00000-0 18226-3 0 9990
TLE line 2: 2 18960 98.8873 355.8601 0015108 136.0411 37.2417 13.97131320820316
Live tracking on map
Real-time ground track for satellite IRS 1A.
In-orbit conjunctions
A list of the most updated potential collisions computed for object IRS 1A.
Associated space launch
Indian remote sensing satellite
IRS 1A was lifted into orbit during the mission ‘Vostok 8A92M | IRS-1A’, on board a Vostok 8A92M space rocket.
The launch took place on March 17, 1988, 6:43 a.m. from 31/6.
For more information about the launch, click the button.
Vostok 8A92M | IRS-1A
Agency: N/A
Status: Launch Successful
Launch date: March 17, 1988, 6:43 a.m. UTC
Rocket: Vostok 8A92M
Launch pad: 31/6
Location: Baikonur Cosmodrome, Republic of Kazakhstan
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