Satellites

Isro chooses Arianespace for two more launches

http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/smartcrop_800x800/public/images/tv-images/2016/05/28/ISRO.jpg?itok=Lf9k8WhT

MUMBAI: Indian space agency ISRO has chosen Arianespace again to launch its INSAT 4A and INSAT 4B communications satellites.

After today's successful Ariane 5 mission that placed INSAT 3A into orbit from Kourou, ISRO chairman Dr. Kasturirangan and Arianespace CEO Jean-Yves Le Gall announced the signing of launch contracts for two more payloads - the INSAT 4A and 4B spacecraft.

These are the 12th and 13th Isro satellites to be booked on the European launcher. Since the launch of the Apple experimental satellite in 1981 on Flight L03, Arianespace has orbited ten Indian satellites. Arianespace is slated to launch another ISRO payload, the INSAT 3E satellite, later this year.

Designed, built and integrated by Isro, the INSAT 4A and INSAT 4B satellites each weigh about 3,200 kg at liftoff. INSAT 4A and INSAT 4B are dedicated to telecommunications, with 12 Ku band and 12 C-band transponders each. Their coverage zone is the Indian sub-continent.

Meanwhile, the 160th flight of Ariane, carrying Isro's 2,950 kg INSAT-3A and GALAXI-XII of US, lifted off at 4.22 am IST from Kourou, French Guyana. INSAT-3A was injected into a Geosynchronous Transfer Orbit (GTO), 30 minutes after the lift-off in 3-axis stabilized mode, with a perigee (nearest point to earth) of 859 km and an apogee (farthest point to earth) of 36,055 km and an inclination of 1.99 deg. with respect to the equator. The satellite is at present going round the earth with an orbital period of about 10 hours 47 minutes, according to the agency.

The Master Control Facility (MCF) at Hassan in Karnataka acquired the telemetry signal from INSAT-3A at 04.52 am IST. The initial health checks on the satellite indicate that the performance of the satellite is normal. First operations on the satellite were carried out by issuing commands from the MCF. The outermost panel of the stowed solar array of INSAT-3A was oriented towards the Sun to start generating the electrical power required by the satellite. Subsequently, the earth viewing face was oriented towards the earth and calibration of the gyros on board the satellite was carried out.

INSAT-3A is being tracked, monitored and controlled from MCF. During the initial phase of INSAT-3A operations, MCF also utilises INMARSAT Organisation's ground stations at Beijing (China), Fucino (Italy) and Lake Cowichan (Canada). The satellite's orbit is being precisely determined by continuous ranging from the participating Telemetry, Tracking and Command (TTC) ground stations.

In the coming days, orbit raising operations of INSAT-3A will be carried out by firing its 440 Newton Liquid Apogee Motor (LAM) in stages till the satellite attains its final geostationary orbit, which is about 36,000 km above the equator. The satellite has about 1.6 tonne of propellant (Mono-Methyl Hydrazine - MMH fuel and Mixed Oxides of Nitrogen - MON-3 oxidiser) for orbit raising operations as well as for station keeping and in-orbit attitude control. The on-orbit propellant availability will enable maintaining the satellite for operational services for a period of 12 years.

When the satellite reaches near-geostationary orbit, deployment of its solar panels and the two antennas as well as the solar sail will be carried out and the satellite put in its final 3-axis stabilised mode. This will be followed by trim manoeuvres to take the satellite to its designated orbital slot. The payloads will be subsequently checked out before the commissioning of the satellite.

INSAT-3A will be positioned at 93.5 deg East longitude in the geostationary orbit.

Latest Reads

http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2016/12/02/PSLV%20satellites.jpg?itok=Rhxn2X4G
DTH-aiding GSAT-19 launch plan under way

NEW DELHI: The Indian Space Research Organisation is working towards putting into orbit an indigenous communication satellite GSAT-19, weighing 3.3 tonne and carrying Ka/Ku band payloads. Ku Band is suitable for direct-to-home platforms.

Satellites Satellite Launches
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2016/10/29/ISRO.jpg?itok=nD4ViYL1
ISRO to launch 83 satellites on single rocket, create world record

MUMBAI: The Indian space agency ISRO, in a move to set a world record, is planning to put into orbit 83 satellites -- two Indian and 81 foreign -- on a single rocket in early 2017, said a top official of Antrix Corporation, the commercial arm of Indian Space Research Organisation (ISRO).

Satellites Satellite Launches
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2016/10/17/bilwade-800x800.jpg?itok=e1HifkUX
Andrew Jordan announced successor of AsiaSat's William Wade

Asia Satellite Telecommunications has announced the retirement of its executive director, president and CEO William Wade. He will serve his last day in the company on 1 November 2016 but will stay back as the senior advisor of AsiaSat until 31 March 2017.

Satellites Satellite Operators
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2016/10/06/gsat18arianespace800x800.jpg?itok=NfyASgGz
GSAT-18 successfully launches, new capacity for DTH operators, TV channels

MUMBAI: Indian DTH operators, television channels, VSAT and digital satellite news gathering providers are a happy lot because of a development in Kouro French Guiana this morning. The reason: the successful launch of Arianespace’s Ariane 5 VA 531 rocket with its passenger, the Indian Space...

Satellites Satellite Launches
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2016/10/05/GSAT-18.jpg?itok=rMbWxSHD
Bad weather pushes forward GSAT-18 launch

MUMBAI: The nation - and communication satellite trackers - will have to wait for another day. The Indian Space Research Organisation (ISRO) has announced that the launch of its GSAT-18 communications satellite has been delayed by a day. According to its launch partner, Arianespace, the flight...

Satellites Satellite Launches
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2016/09/26/Untitled-1_12.jpg?itok=qZEUjy54
ISRO's PSLV-C35 launches seven other satellites successfully

Around two hours after lift-off and after placing India’s weather satellite ScatSat1 in a polar sun synchronous orbit at 720 km, the Indian Space Research Organisation’s (ISRO’s) PSLV C35 rocket fired once again. Following that maneuver, it placed another seven satellites in orbit at an altitude...

Satellites Satellite Operators
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2016/09/26/pslvc35800x800launch.jpg?itok=vk6wvbV6
ISRO’s PSLV-C35 takes off successfully, Scatsat1 launched

MUMBAI: It’s another feather in ISRO’s cap. The Indian space outfit seems to be going from success to success. Earlier this morning at 9:12 am, its latest mission the PSLV-C35 lifted off immaculately from the Satish Dhawan Space Centre in Sriharikota. Around 17 minutes later, its fourth stage...

Satellites Satellite Launches
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2016/09/25/pslvc35800x800.jpg?itok=dzXMaISg
ISRO to launch eight satellites using PSLV on 26 September

MUMBAI: It will be the second satellite launch this month for the Indian Space Research Organisation (ISRO). On 26 September 2016 at exactly 9:12 am the PSLV C35 will blast off from the first launch pad of the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh. It will mark the 37th...

Satellites Satellite Launches
http://www.indiantelevision.com/sites/drupal7.indiantelevision.co.in/files/styles/340x340/public/images/tv-images/2016/09/22/Untitled-1_34.jpg?itok=B_jE4RwV
XTreme-AsiaSat to provide 4K premium UHD content

4K-SAT, the Ultra-HD channel operated by Asia’s premier satellite operator Asia Satellite Telecommunications Co. Ltd. (AsiaSat), will be broadcasting premium extreme and outdoor content from XTreme Video on AsiaSat 4.

Satellites Satellite Operators

Latest News

Load More

Sign up for our Newsletter

subscribe for latest stories