INSAT-2D

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 the betterment in the 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]

INSAT-2D

Mission type	Multipurpose communication
Operator	INSAT
COSPAR ID	1997-027B
SATCAT no.	24820
Mission duration	7 Years
Spacecraft properties
Manufacturer	ISRO
Launch mass	2,079 kg (4,583 lb)
Dry mass	995 kg (2,194 lb)
Power	1650 watts
Start of mission
Launch date	4 June, 1997
Rocket	Ariane-4
Launch site	French Guyana
End of mission
Deactivated	4 Oct, 1997
Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Longitude	93.5 Degree East

The satellite was placed into Geo-stationary orbit at an inclination of 93.5 degree East.[3] The lift off mass of the satellite Insat-2D 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 1650 Watts.[1]

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