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 and station keeping
Orbit raising operations were made using an on-board LAM and chemical thrusters[2] to place the satellite in the intended geostationary orbital slot.
^ abcde(PDF). Indian Space Research Organisation. December 2015. p. 28. Archived from the original (PDF) on 2016-07-05.
^ abcd"GSAT-18" (PDF). Indian Space Research Organisation.
^ abBergin, Chris (5 October 2016). "Ariane 5 launches Sky Muster II and GSAT-18". NASA Spaceflight. Retrieved 6 October 2016.
^"GSAT-18 - Orbit". Heavens-Above. 11 June 2017. Retrieved 12 June 2017.
^"India's communication satellite GSAT-18 launched successfully". Business Standard. Press Trust of India. 6 October 2016. Retrieved 6 October 2016.
^. Spaceflight Now. 4 October 2016. Archived from the original on 5 October 2016.
^Clark, Stephen (5 October 2016). "Ariane 5 goes on test run after launching two satellites". Spaceflight Now. Retrieved 6 October 2016.
^de Selding, Peter B. (20 June 2016). "Japan's DSN-1 military communications satellite damaged during transport to launch base". Space News. Retrieved 10 September 2016.
^D. S., Madhumathi (10 July 2016). "Deferred GSAT-18 awaits October launch at Kourou". The Hindu. Retrieved 10 September 2016.
^"Sky Muster II comes to French Guiana for launch on Ariane 5". Arianespace. 31 August 2016. Retrieved 10 September 2016.
^"Bad weather delays Isro's launch of communications satellite GSAT-18". Hindustan Times. Press Trust of India. 5 October 2016. Retrieved 5 October 2016.
^"The first orbit raising manoeuvre..." Indian Space Research Organisation. 7 October 2016. Retrieved 12 June 2017.
^"The second orbit raising manoeuvre..." Indian Space Research Organisation. 8 October 2016. Retrieved 12 June 2017.
^"Third LAM firing of GSAT-18..." Indian Space Research Organisation. 9 October 2016. Retrieved 12 June 2017.
^"Orbit Determination results..." Indian Space Research Organisation. 9 October 2016. Retrieved 12 June 2017.
February 28, 2023
gsat, indian, communications, satellite, built, isro, operated, insat, carries, band, extended, band, band, transponders, mission, typecommunicationsoperatorinsatcospar, id2016, 060asatcat, 41793websitemission, durationplanned, years, elapsed, years, months, d. 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 GSAT 18Mission typeCommunicationsOperatorINSATCOSPAR ID2016 060ASATCAT no 41793WebsiteGSAT 18Mission durationPlanned 15 years Elapsed 6 years 4 months 22 daysSpacecraft propertiesBusI 3K 1 ManufacturerISRO Satellite CentreSpace Applications CentreLaunch mass3 404 kg 7 505 lb 2 Dry mass1 480 kg 3 263 lb 2 Power6 474 watts 2 Start of missionLaunch date5 October 2016 2016 10 05 20 30 UTC 3 RocketAriane 5 ECA VA 231 1 Launch siteGuiana Space Centre ELA 3 1 ContractorArianespace 1 Orbital parametersReference systemGeocentricRegimeGeostationaryLongitude74 EPerigee altitude35 750 km 22 214 mi Apogee altitude35 822 km 22 259 mi Inclination0 0616 Epoch11 June 2017 01 46 00 UTC 4 TranspondersBand24 C band 12 extended C band 12 Ku band 2 Ku beaconGSAT GSAT 15GSAT 9 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 and station keeping EditOrbit 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 Inclinationachieved Orbital period ReferencesApogee Perigee1 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 References Edit Spaceflight portal a b c d e Annual Report 2015 2016 PDF Indian Space Research Organisation December 2015 p 28 Archived from the original PDF on 2016 07 05 a b c d GSAT 18 PDF Indian Space Research Organisation a b Bergin Chris 5 October 2016 Ariane 5 launches Sky Muster II and GSAT 18 NASA Spaceflight Retrieved 6 October 2016 GSAT 18 Orbit Heavens Above 11 June 2017 Retrieved 12 June 2017 India s communication satellite GSAT 18 launched successfully Business Standard Press Trust of India 6 October 2016 Retrieved 6 October 2016 Launch Schedule Spaceflight Now 4 October 2016 Archived from the original on 5 October 2016 Clark Stephen 5 October 2016 Ariane 5 goes on test run after launching two satellites Spaceflight Now Retrieved 6 October 2016 de Selding Peter B 20 June 2016 Japan s DSN 1 military communications satellite damaged during transport to launch base Space News Retrieved 10 September 2016 D S Madhumathi 10 July 2016 Deferred GSAT 18 awaits October launch at Kourou The Hindu Retrieved 10 September 2016 Sky Muster II comes to French Guiana for launch on Ariane 5 Arianespace 31 August 2016 Retrieved 10 September 2016 Bad weather delays Isro s launch of communications satellite GSAT 18 Hindustan Times Press Trust of India 5 October 2016 Retrieved 5 October 2016 The first orbit raising manoeuvre Indian Space Research Organisation 7 October 2016 Retrieved 12 June 2017 The second orbit raising manoeuvre Indian Space Research Organisation 8 October 2016 Retrieved 12 June 2017 Third LAM firing of GSAT 18 Indian Space Research Organisation 9 October 2016 Retrieved 12 June 2017 Orbit Determination results Indian Space Research Organisation 9 October 2016 Retrieved 12 June 2017 Retrieved from https en wikipedia org w index php title GSAT 18 amp oldid 1000978040, wikipedia, wiki, book, books, library,
