![]() | |
Mission type | Communications |
---|---|
Operator | INSAT |
COSPAR ID | 2016-060A |
SATCAT no. | 41793 |
Website | GSAT-18 |
Mission duration | Planned: 15 years Elapsed: 7 years, 8 months, 28 days |
Spacecraft properties | |
Bus | I-3K [1] |
Manufacturer | ISRO Satellite Centre Space Applications Centre |
Launch mass | 3,404 kg (7,505 lb) [2] |
Dry mass | 1,480 kg (3,263 lb) [2] |
Power | 6,474 watts [2] |
Start of mission | |
Launch date | 5 October 2016 UTC [3] | , ≈20:30
Rocket | Ariane 5 ECA, VA-231 [1] |
Launch site | Guiana Space Centre ELA-3 [1] |
Contractor | Arianespace [1] |
Orbital parameters | |
Reference system | Geocentric |
Regime | Geostationary |
Longitude | 74° E |
Perigee altitude | 35,750 km (22,214 mi) |
Apogee altitude | 35,822 km (22,259 mi) |
Inclination | 0.0616° |
Epoch | 11 June 2017 01:46:00 UTC [4] |
Transponders | |
Band | 24 × C band 12 × extended C band 12 × Ku band 2 × Ku beacon |
GSAT-18 is an Indian communications satellite. Built by ISRO and operated by INSAT, it carries 24 C-band, 12 extended C-band, and 12 Ku-band transponders.
The satellite was launched on 5 October 2016 at approximately 20:30 UTC aboard an Ariane 5 ECA rocket from the Guiana Space Centre in Kourou, French Guiana. [3] [5] The launch vehicle inserted the satellite into a geosynchronous transfer orbit, and once in service it will occupy the orbital slot at 74° East longitude. [1] [6] The total cost of the satellite and launch services was about US$153 million. [7]
GSAT-18 was originally scheduled to launch on 12 July 2016 alongside Japan's Superbird-8 satellite, but a shipping mishap which damaged Superbird-8 forced a delay in the launch schedule. [8] [9] Arianespace later paired GSAT-18 with Australia's Sky Muster II for a 4 October 2016 launch. [10] The launch was delayed 24 hours to 5 October due to excessively high crosswinds at the launch site. [11]
Orbit raising operations were made using an on-board LAM and chemical thrusters [2] to place the satellite in the intended geostationary orbital slot.
Op # | Date/ Time (UTC) | LAM burn time | Height achieved | Inclination achieved | Orbital period | References | |
---|---|---|---|---|---|---|---|
Apogee | Perigee | ||||||
1 | 6 October 2016 10:16 | 6040.6 sec | 35,802 km (22,246 mi) | 14,843 km (9,223 mi) | 1.325° | 15 hrs, 36 mins | [12] |
2 | 8 October 2016 05:59 | - | 35,840 km (22,270 mi) | 32,518 km (20,206 mi) | 0.129° | 22 hrs, 34 mins | [13] |
3 | 9 October 2016 04:51 | 256.17 sec | 35,802 km (22,246 mi) | 35,294 km (21,931 mi) | 0.136° | 23 hrs, 44 mins | [14] [15] |
The Guiana Space Centre, also called Europe's Spaceport, is a spaceport to the northwest of Kourou in French Guiana, a overseas region of France in South America. Kourou is located approximately 500 kilometres north of the equator at a latitude of 5°. In operation since 1968, it is a suitable location for a spaceport because of its near equatorial location and open sea to the east.
The Indian National Satellite System or INSAT, is a series of multipurpose geostationary satellites launched by the Indian Space Research Organisation (ISRO) to satisfy telecommunications, broadcasting, meteorology, and search and rescue operations. Commissioned in 1983, INSAT is the largest domestic communication system in the Indo-Pacific Region. It is a joint venture of the Department of Space, Department of Telecommunications, India Meteorological Department, All India Radio and Doordarshan. The overall coordination and management of INSAT system rests with the Secretary-level INSAT Coordination Committee.
The GSAT satellites are India's indigenously developed communications satellites, used for digital audio, data and video broadcasting. As of 5 December 2018, 20 GSAT satellites manufactured by ISRO have been launched, out of which 14 are in service.
HYLAS is a British satellite in geostationary orbit. HYLAS, which is an acronym for Highly Adaptable Satellite, is a communications satellite and was launched by the European Ariane 5 launch vehicle from the Guyana Space Centre at Kourou in French Guiana. It is located at the orbital location of 33.5 degrees west and will provide new and innovative services including High Definition Television (HDTV) and interactive satellite delivered broadband services. The satellite will help address the issue of poor broadband coverage in many parts of Europe which have less developed ground infrastructure.
ELA-3, is a launch pad and associated facilities at the Centre Spatial Guyanais in French Guiana. ELA-3 was operated by Arianespace as part of the expendable launch system for Ariane 5 launch vehicles. As of July 2023, 117 launches have been carried out from it, the first of which occurred on 4 June 1996. The final launch occurred on 5 July 2023.
INSAT 3E is a defunct communication satellite built by Indian Space Research Organisation. It was launched on September 28, 2003, from the European Space Agency's spaceport in French Guiana on board the Ariane rocket. The satellite had a launch mass of 2750 kilograms. It is the 4th satellite launched in the INSAT-3 series for INSAT. It was designed for providing high-speed communication, Television, VSAT & Tele-education services and was an important landmark in Indian Space Programme.
INSAT-4A was the first one in the INSAT-4 Satellites series, providing services in the Ku and C band frequency bands. At the time of launch, it was the heaviest satellite India had produced. The Ku transponders cover the Indian main land and C-Band transponders cover an extended area. It has a dozen Ku transponders and another dozen of C-band transponders. This spacecraft was placed at 83°E along with INSAT-2E and INSAT-3B, by Ariane launch vehicle (ARIANE5-V169).
GSAT-8 or INSAT-4G is communication satellite. It was constructed by the Indian Space Research Organisation, as part of INSAT system. GSAT-8 was launched on May 21, 2011, from Kourou, French Guiana. The rocket, an Ariane 5 was the carrier, marketed by the European Arianespace. First satellite to carry GAGAN payload followed up by GSAT-10 and in-orbit spare GSAT-15.
GSAT-10 is an Indian communication satellite which was launched by Ariane-5ECA carrier rocket in September 2012. It has 12 KU Band, 12 C Band and 6 lower extended c band transponders, and included a navigation payload to augment GAGAN capacity. Following its launch and on-orbit testing, it was placed in Geosynchronous orbit at 83.0° East, from where it will provide communication services in India.
GSAT-11 is an Indian geostationary communications satellite. The 5854 kg satellite is based on the new I-6K Bus and carries 40 transponders in the Ku-band and Ka-band frequencies, which are capable of providing up to 16 Gbit/s throughput. GSAT-11 is India's heaviest satellite.
GSAT-7 or INSAT-4F is a multi-band military communications satellite developed by the Indian Space Research Organisation. The Indian Navy is the user of the multi-band communication spacecraft, which has been operational since September 2013. According to defense experts, the satellite will enable the navy to extend its blue water capabilities and stop relying on foreign satellites like Inmarsat, which provide communication services to its ships.
GSAT-16 is the 11th Indian communication satellite, meant to increase the number of transponders available for satellite-based telecommunication, television, and VSAT services in India. GSAT-16 is similar to GSAT-15 with each satellite weighing 3,150 kg and having power generation capacity of 6.8 kW.
INSAT-4B was an Indian communications satellite which forms part of the Indian National Satellite System. Launched in 2007, it was placed in geostationary orbit at a longitude of 93.48° East.
GSAT-19 is an Indian communications satellite launched by the Indian Space Research Organisation aboard an LVM3 on 5 June 2017.
GSAT-17 is an Indian communications satellite. Built by ISRO and operated by INSAT, it carries 24 C-band, 2 lower C-band, 12 upper C-band, 2 CxS, and 1 SxC transponders. It additionally carries a dedicated transponder for data relay (DRT) and search-and-rescue (SAR) services. At the time of launch, GSAT-17 was the heaviest satellite built by ISRO.
GSAT-20 is a communication satellite being developed by Indian Space Research Organisation and will be launched by a SpaceX Falcon 9. The GSAT-20 satellite is funded, owned and operated by New Space India Limited. The entire capacity onboard CMS-02 satellite will be leased to Dish TV. GSAT-20 will be a continuation of GSAT series of communication satellites. The satellite is intended to add data transmission capacity to the communication infrastructure required by Smart Cities Mission of India.
GSAT-30 is a telecommunications satellite developed by the Indian Space Research Organisation (ISRO).
Eutelsat Konnect is a geostationary communications satellite operated by Eutelsat. The satellite was designed and manufactured by Thales Alenia Space on the Spacebus NEO 100 platform, and was launched on 16 January 2020 on an Ariane 5 ECA. The satellite provides broadband internet and communications coverage to Europe and Sub-Saharan Africa.
CMS-02 is an Indian Communication Satellite built by ISRO. The CMS-02 satellite is funded, owned and operated by New Space India Limited. Cost of spacecraft was around ₹400 crore. The entire capacity onboard CMS-02 satellite will be leased to Tata Play. The satellite was placed into orbit by using Ariane 5 rocket.