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Telkom-4

From Wikipedia, the free encyclopedia
Indonesian communications satellite

Telkom-4
Telkom-4 Merah Putih satellite
NamesMerah Putih
Mission typeCommunications
OperatorPT Telekomunikasi Indonesia Tbk
COSPAR ID2018-064A[1]
SATCATno.43587
Websitehttps://telkomsat.co.id/id/
Mission duration16 years (planned)
6 years, 7 months and 24 days(in progress)
Spacecraft properties
SpacecraftMerah Putih
Spacecraft typeSSL 1300
BusLS-1300
ManufacturerSpace Systems/Loral
Launch mass5,800 kg (12,800 lb)[2]
Dry mass2,000 kg (4,400 lb)
Start of mission
Launch date7 August 2018, 05:18UTC
RocketFalcon 9 Block 5,B1046.2
Launch siteCape Canaveral,SLC-40
ContractorSpaceX
Entered serviceOctober 2018
Orbital parameters
Reference systemGeocentric orbit[3]
RegimeGeostationary orbit
Longitude108° East
Transponders
Band60C-Band
Coverage areaIndonesia,Southeast Asia,South Asia,India

Telkom 4, also known asMerah Putih, is an Indonesian geostationary communication satellite built bySpace Systems/Loral that is located at an orbital position of 108° East and is operated byPT Telekomunikasi Indonesia Tbk. The satellite is based on theSSL 1300 satellite bus and has a life expectancy of 16 years. It was launched on 7 August 2018, at 05:18UTC or 12:18Jakarta Time, using theSpaceX Falcon 9 Block 5 launcher fromCape Canaveral Air Force Station, Florida, United States.[4][5]

Satellite description

[edit]

This satellite carries 60 activetransponders consisting of 24 C-Band transponders and 12 Extended C-Band transponders which will serve theSoutheast Asia region, including Indonesia, as well as 24 C-Band transponders which will reach theSouth Asia region. The satellite relies on the SSL 1300 satellite bus with a design life of 16 years with up to 21 years of fuel remaining. The development of the Merah Putih Satellite involves two U.S. companies, namely SSL as a satellite manufacturer andSpaceX as alaunch service provider. The total mass of the satellite is 5,800 kilograms (12,800 lb). Telkom-4 is devoted to servinghigh-definition television (HDTV) broadcasts,GSM andInternet services.

Launch

[edit]

Telkom-4 was launched using the SpaceXFalcon 9 Block 5 first stageB1046.2 from Cape Canaveral Air Force Station (CCAFS), Florida, United States on 7 August 2018, at 01:18 UTC. The launch was the first time SpaceX reused one of the Block 5 variant of the Falcon 9 rocket boosters.[6] After successfully separating from the second stage, the first stage landed on the SpaceX drone shipOf Course I Still Love You.

Project cost

[edit]

The launch of the Telkom-4 (Merah Putih) satellite saves around 25% of the cost of launching the previous satellite, theTelkom-3S satellite, which was launched on 15 February 2017, which cost US$215 million. Meanwhile, the Merah Putih satellite only costs US$165 million and includes insurance costs of US$10 million.[7]

Service users

[edit]

Due to the inadequacy of thePalapa-D satellite to operate until July 2020, while the replacement satellite, Nusantara Dua (Palapa N1),[8] failed to reach orbit, many TV and radio channels migrated from Palapa-D to Telkom-4.[9] Below is a list of frequency of channels that have migrated as of July 2020:[10]

References

[edit]
  1. ^"Telkom 4 2018-064A". Nasa. 13 April 2021. Retrieved27 April 2021.
  2. ^"Telkom 4 (Merah Putih)". Gunter's Space Page. Retrieved27 April 2021.
  3. ^"Telkom-4". N2YO.com. Retrieved27 April 2021.
  4. ^"LAPORAN DARI FLORIDA AS: Satelit Merah Putih Sukses Mengangkasa".industri.bisnis.com (in Indonesian). Retrieved7 August 2018.
  5. ^Luciana, Anisa (6 August 2018)."Besok, Satelit Merah Putih Telkom Diluncurkan dari Florida AS".Tempo (in Indonesian). Retrieved7 August 2018.
  6. ^Utomo, Happy Ferdian Syah."Ini Kata Elon Musk soal Peluncuran Satelit Merah Putih".liputan6.com (in Indonesian).Miami: Liputan6.com. Retrieved7 August 2018.
  7. ^Luciana, Anisa (6 August 2018)."Besok, Satelit Merah Putih Telkom Diluncurkan dari Florida AS".Tempo (in Indonesian). Retrieved7 August 2018.
  8. ^"Roket China Gagal Bawa Satelit Palapa N1 Hancur Berkeping" (in Indonesian). CNBC Indonesia. Retrieved17 August 2020.
  9. ^"Nusantara dua Gagal Capai Orbit Palapa-D masih Beroperasi" (in Indonesian). Detik. Retrieved11 April 2020.
  10. ^"Telkom-4 at 108° E". Lyngsat. Retrieved4 August 2020.

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