11.08.2005 23:37

Inmarsat-4 F2 launch successfully places satellite in geosynchronous transfer orbit


Most of the news stories are still focussing on the launch, but the press release from Sea Launch Company reports
All systems performed nominally throughout the flight. The Block DM-SL upper stage inserted the 5,958 kg (13,108 lb.) satellite to geosynchronous transfer orbit, on its way to a final orbital position of 53 degrees West Longitude. A ground station at Lake Cowichan, in British Columbia, acquired the first signal from the satellite less than 25 minutes after spacecraft separation, as planned.
Source: Sea Launch Delivers Inmarsat-4 Satellite to Orbit.

Daily Wireless has some nice images of the coverage areas of the F1 and F2 satellites and of Inmarsat 8's United States footprint. It also says there that an available F3 could cover parts of Japan and Australia. Inmarsat has an Atlas 5 launch contract, and an Atlas 5 launched the F1, so perhaps the F3 will go up as well.

From Mission log events on the Inmarsat site:
The satellite will now begin deployment and testing, with a number of key milestones ahead before being fully-deployed in geostationary orbit, 35,786 kilometres (22,237 miles) above the Equator, over northern Brazil [at 53 or 54 degrees West].