Ariane 5 December 21, 2005

Ariane: 5 for 5 in 2005, Successful launch of Insat 4A and MSG-2

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During the night of Wednesday, December 21, to Thursday, December 22, Arianespace placed two satellites into geostationary transfer orbit: the Insat 4A communications satellite for the Indian Space Research Organization, ISRO, and the MSG-2 weather satellite for the European organization Eumetsat.

21st successful Ariane 5 launch, 11th in a row, 5th launch in 2005

Arianespace carried out five successful launches in 2005, using three standard Ariane 5G and two Ariane 5 ECA launch vehicles, to orbit eight satellites and over 26 tons of payload.

Today’s launch was the 21st successful launch of an Ariane 5 and the 11th in a row, further confirmation that Arianespace continues to provide the launch services that best match the needs of operators around the world.

Today, Ariane 5 is the only commercial launcher in service capable of simultaneously launching two payloads and giving customers the performance, flexibility and competitiveness they expect.

Launches for two long-standing clients

When Ariane L03 was launched on June 19, 1981, it carried ISRO’s experimental satellite Apple, and the Meteosat weather satellite for Eumetsat.

Insat 4A is the 12th satellite for which ISRO has chosen the European launcher. Arianespace still has another ISRO satellite to be launched, Insat 4B.

MSG-2 (Meteosat Second Generation) is the eighth Eumetsat (European Meteorological Satellite organization) satellite to be launched by Arianespace. The first MSG satellite was launched by Arianespace on August 28, 2002, and a ninth satellite, MSG-3, is scheduled for an Ariane launch in 2009. Starsem, a subsidiary of Arianespace, has two Eumetsat satellites in its order book, Metop A and Metop B.

Insat 4A/MSG-2 mission at a glance

The mission was carried out by a standard Ariane 5G launcher from Europe’s Spaceport in Kourou, French Guiana. Liftoff was on Wednesday, December 21 at 7:33 p.m. local time in Kourou (5:33 p.m. in Washington, D.C., 22:33 GMT, 11:33 p.m. in Paris, and on Thursday, December 22 at 4:33 a.m. in Bangalore).

Provisional parameters at injection of the storable propellant upper stage (EPS) were:

Perigee: 622 km. for a target of 622 km. (±3)
Apogee: 36,152 km. for a target of 36,159 km. (±160)
Inclination: 4.02 degrees for a target of 4.00 degrees (±0.06º)

Insat 4A, weighing about 3,200 kg. at launch, was designed, assembled and integrated by ISRO in Bangalore, southern India. Insat 4A is a dedicated telecommunications satellite, with 12 Ku-band transponders and 12 C-band transponders. Its footprint will primarily cover all of the Indian sub-continent.

MSG-2, the second Meteosat Second Generation satellite, is part of a European program comprising four geostationary weather satellites. MSG-2 was built by prime contractor Alcatel Alenia Space, and will weigh about 2,000 kg. at launch. It is fitted with 12 separate observation channels, three in the visible wavelength, and nine infrared. It will transmit images every 15 minutes. MSG-2 will ensure service continuity, giving meteorologists a powerful weather observation and forecasting tool covering Europe and neighboring regions.

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