INSAT-2D

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INSAT-2D
Mission typeMultipurpose communication
Operator INSAT
COSPAR ID 1997-027B OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 24820 OOjs UI icon edit-ltr-progressive.svg
Mission duration7 Years
Spacecraft properties
Manufacturer ISRO
Launch mass2,079 kg (4,583 lb)
Dry mass995 kg (2,194 lb)
Power1650 watts
Start of mission
Launch date4 June 1997
RocketAriane-4
Launch siteFrench Guiana
End of mission
Deactivated4 Oct, 1997
Orbital parameters
Reference system Geocentric
Regime Geostationary
Longitude93.5 Degree East

INSAT-2D was an Indian communications satellite. Launched on 4 June 1997, and similar to INSAT-2C, INSAT-2D went out of order on October 4, 1997, because of a power inconsistency problem and was later replaced by INSAT-2DT, an in-orbit satellite which was previously known as ARABSAT-1C. The main aim of the satellite was improved communication. [1] [2] In the INSAT-2 (Indian National Satellite System) series, INSAT-2D was the fourth consecutive communication satellite. The satellite was launched using an Ariane 4 rocket from French Guiana. [2]

The satellite was placed into geostationary orbit at an inclination of 93.5 degrees east. [3] INSAT-2D's lift-off mass was 2,079 kg (4,583 lb) with propellants of which 995 kg (2,194 lb) were the dry weight. [1] The satellite was expected to have a nominal lifespan of around 7–9 years. [4] [3] The onboard power of the satellite was estimated to be 1,650 watts. [1]

Insat-2D, imaged at Northolt Branch Observatories, satellite can be seen as a bright spot passing by fast. BepiColombo satellite of JAXA can also be seen as a dot moving slowly across the screen.

Its communication payload consisted of 16C-band transponders (extended C-band, for fixed-satellite service), two high-power C-band transponders (for broadcasting-satellite service, BSS), one S-band transponder (for BSS), one C/S-band mobile communication transponder, and three Ku-band transponders. [1] [2] [3] [4]

References

  1. 1 2 3 4 "INSAT-2D - ISRO". www.isro.gov.in. Archived from the original on 2021-06-24. Retrieved 2021-06-18.
  2. 1 2 3 "INSAT-2D". www.vssc.gov.in. Archived from the original on 2021-06-24. Retrieved 2021-06-18.
  3. 1 2 3 "Welcome To ISRO :: Satellites :: Geo-Stationary Satellite :: INSAT-2D". resource.itschool.gov.in. Retrieved 2021-06-18.
  4. 1 2 "Insat 2C, 2D". Gunter's Space Page. Retrieved 2021-06-18.