INSAT 4B

Additional information INSAT 4B

INSAT-4B is an Indian communications satellite which forms part of the Indian National Satellite System. Launched in 2007, it is operated in geostationary orbit at a longitude of 93.48° east.Built by the Indian Space Research Organisation, INSAT-4B is based upon the I-3K satellite bus. It had a mass at launch of 3,028 kilograms (6,676 lb), with a dry mass of 1,335 kilograms (2,943 lb) and was expected to operate for twelve years. Two solar arrays power the satellite, while its communications payload consists of twelve C and twelve Ku band transponders.Arianespace was contracted to launch INSAT-4B using an Ariane 5 ECA carrier rocket. The launch occurred on 11 March 2007 at 22:03 UTC, from ELA-3 at Kourou. The Skynet 5A military communications satellite for the British Ministry of Defence was launched aboard the same rocket.
INSAT-4B was successfully inserted into geosynchronous transfer orbit, from which it raised itself into geostationary orbit using a liquid-fuelled apogee motor. It received the International Designator 2007-007A and Satellite Catalog Number 30793. As of 11 November 2013, it is in an orbit with a perigee of 35,776 kilometres (22,230 mi), an apogee of 35,809 kilometres (22,251 mi), inclination of 0.07 degrees and an orbital period of 23.93 hours.

Average inclination INSAT 4B

Mean right ascension of the ascending node (RAAN) INSAT 4B

Mean argument of perigee INSAT 4B

Mean semi-major axis of the orbit INSAT 4B

Mean orbital eccentricity INSAT 4B