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INSAT 1A, 13129

Orbit data source: Space-Track

INSAT 1A, 13129 is a payload satellite owned by ISRO (IN) in GEO that was launched on Sat, 10 Apr 1982 UTC via a DELTA 3910/PAM launch vehicle from the Air Force Eastern Test Range (AFETR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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Iframe URL

https://www.satcat.com/sats-embedded/13129?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

13129, 1982-031A

Orbit

GEO

Country

IN / IND

Related business

Indian Space Research Organization (IN)

Manufacturer

Ford Ae

Mission

Non-operational Civil Com/Cal

Bus & Motor

INSAT, R-4D-11

Mass

1,149 kg wet, ~519 kg dry

Launch date (UTC)

1982-04-10 (43 years ago)

Launch vehicle

DELTA 3910/PAM

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Hex Poly + 1 Pan, 1.1 m

Radar Cross Section

4.397 m², Medium (>0.1 m² and < 1m²)

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Last TLE update: 1 day ago

TLE from 1 day ago

0 INSAT 1A
1 13129U 82031A   25262.80237598  .00000123  00000-0  00000-0 0  9995
2 13129   7.7468 300.5210 0006893  77.3566 305.7655  1.00320551163728

Epoch: 2025-09-19T19:15Z

TLE epoch observation values (Epoch: 2025-09-19T19:15:25.284Z)

Latitude

3.03255°

Longitude

35.60951°

Altitude

35,754.972 km

Speed

3.076 km/s

True Right ascension

21h 33m 38s

True Declination

3° 01' 46"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

12:05:04

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,803.027 km

Perigee altitude

35,744.916 km

Semi-major axis

42,152.109 km

Eccentricity

0.00069

Inclination

7.7468°

RAAN

300.521°

Arg. of periapsis

77.3566°

True anomaly

305.70138°

Mean anomaly

305.7655°

Eccentric anomaly

305.73344°

Mean motion

0.25079 °/min

Orbital period

1,435.45 mins

BSTAR

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Other satellites on launch #31 in the year 1982 (1982-04-10 UTC)

INSAT 1A R/B(PAM-D), 13137 (Decayed)

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INSAT 1A Visibility

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Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
INSAT 1A is likely not visible in the next few days.

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13129 neighbors

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Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out INSAT 1A, 13129 on other resources

View INSAT 1A, 13129 on NASA - NSSDCA Website

View INSAT 1A, 13129 on Heavens-Above

View INSAT 1A, 13129 on Keep Track

View INSAT 1A, 13129 on Celestrak

View INSAT 1A, 13129 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

INSAT 1A, 13129

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 1 day ago

TLE from 1 day ago

TLE epoch observation values (Epoch: 2025-09-19T19:15:25.284Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #31 in the year 1982 (1982-04-10 UTC)

INSAT 1A Visibility

13129 neighbors

Co-orbital & Co-planar RSOs

Check out INSAT 1A, 13129 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 1 day ago