GSAT-17 : Indian Communication Satellite Launched

GSAT-17 : Indian Communication satellite launched

As per information, Science Magazine in India says, GSAT-17, the country's newly launched communication satellite, have joined the fleet of 17 working Indian communication satellites in space and augment their overall capacity to some extent. 

The 3,477-kg spacecraft was released into orbit in space as planned after launch from the European space port of Kourou in French Guiana. It was dusk at the South American near-equatorial space port.

GSAT-17 was sent up as the second passenger on the European booster, Ariane-5 ECA VA-238, according to ISRO and the European launch company Arianespace.

GSAT-17, built mainly for broadcasting, telecommunication and VSAT services, carries over 40 transponders. It also has equipment to aid meteorology forecasts and search and rescue operations across the sub-continent. 

"GSAT-17 is designed to provide continuity of services of operational satellites in C, extended C and S bands,"  

The satellite was released into what is called a temporary `geosynchronous transfer orbit’ or GTO, where it started orbiting distant 249 km at the near end to Earth and 35,920 km at the farthest point. 

Its operations were immediately taken over by the spacecraft command team at the ISRO Master Control Facility in Hassan.

The other notable points of this communication satellite

Launched on: June 29 at 2.45 a.m. [IST]

Mass: 3,477 kg

Life: 15 years

Cost: Rs 1,013 crore, including launch fee

Launch vehicle: European booster Ariane-5 ECA / VA238

 "Preliminary health checks of the satellite revealed its normal functioning. In the coming days, orbit raising manoeuvres will be performed to place GSAT-17 in the geostationary orbit (36,000 km above the equator) by using the satellite’s propulsion system in steps,"

Its co-passenger was the 5,700-kg Hellas Sat 3-Inmarsat S EAN shared by two satellite operators. 

ISRO does not yet have a launcher that can lift payloads above 2,000 kg. As such it must hire foreign launch vehicles — mostly of Arianespace — to put its heavier communication spacecraft in orbit. Only this month, it tested its first GSLV-Mark III vehicle which can do this job for it. 

"Today, GSAT-17 became India’s third communication satellite to successfully reach orbit in the past two months," said an official release. It launched GSAT-19 on the new MkIII on June 5 and the 2,230-kg GSAT-9 or the South Asia Satellite on May 5, both from Sriharikota.

Designed and assembled at the ISRO Satellite Centre in Bengaluru, GSAT-17 has been at the Kourou space port since May 15, undergoing pre-launch checks and tests.

Arianespace said this was its 21st Indian launch since the APPLE experimental satellite of 1981. ISRO's upcoming 5,000-kg-plus advanced and heaviest satellite, GSAT-11, will also be launched by Arianespace. 

GSAT-17's co-passenger has two operators. Hellas Sat 3 provides direct to home television and telecom services across Europe, West Asia and South Africa. Global satellite operator Inmarsat will provide in-flight Internet facilities for European airlines, as signified in the satellite's tag EAN or European Aviation Network.

Cartosat-2E series satellite meaning for India from Science Magazine

The Cartosat-2E can send 60-cm resolution pictures from an orbit 500 km above the earth.

The Cartosat-2E is the third Indian remote sensing (IRS) or earth observation satellite that can send 60-cm resolution pictures from an orbit 500 km above the earth.

Primarily it will provide useful space-based data for town planners, creators of urban infrastructure, for agriculture and project monitoring, and for decision makers in Smart City and AMRUTH projects, said a senior official of the Indian Space Research Organisation (ISRO).

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