|Mission duration||12 years|
|Launch mass||3,028 kilograms (6,676 lb)|
|Dry mass||1,335 kilograms (2,943 lb)|
|Start of mission|
|Launch date||11 March 2007, 22:03UTC|
|Launch site||Kourou ELA-3|
|Semi-major axis||42,163.57 kilometres (26,199.23 mi)|
|Perigee||35,776 kilometres (22,230 mi)|
|Apogee||35,809 kilometres (22,251 mi)|
|Epoch||11 November 2013, 22:16:22 UTC|
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 5ECA 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.
- McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 12 November 2013.
- "INSAT 4B Satellite details 2007-007A NORAD 30793". N2YO. 11 November 2013. Retrieved 12 November 2013.
- "UCS Satellite Database". Union of Concerned Scientists. 1 September 2013. Retrieved 12 November 2013.
- Krebs, Gunter. "Insat 4A, 4B". Gunter's Space Page. Retrieved 12 November 2013.
- McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 12 November 2013.