Telkom-2: Difference between revisions
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| trans_coverage = [[Indonesia]] |
| trans_coverage = [[Indonesia]], [[southeast Asia]], [[Indian subcontinent]] |
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| programme = [[Telkom Indonesia|Telkom constellation]] |
| programme = [[Telkom Indonesia|Telkom constellation]] |
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Revision as of 22:57, 28 April 2021
| Mission type | Communications |
|---|---|
| Operator | PT Telkom |
| COSPAR ID | 2005-046A |
| SATCAT no. | 28902 |
| Website | https://www.telkom.co.id/sites |
| Mission duration | 15 years (planned) 18 years, 11 months and 29 days (in progress) |
| Spacecraft properties | |
| Spacecraft | Telkom-2 |
| Spacecraft type | Star-2 |
| Bus | GEOStar-2 |
| Manufacturer | Orbital Sciences Corporation |
| Launch mass | 1,975 kg (4,354 lb) |
| Dry mass | 899 kg (1,982 lb) |
| Start of mission | |
| Launch date | 16 November 2005, 23:46:00 UTC [1] |
| Rocket | Ariane 5ECA V167 |
| Launch site | Centre Spatial Guyanais, Kourou, ELA-3 |
| Contractor | Arianespace |
| Entered service | January 2006 |
| Orbital parameters | |
| Reference system | Geocentric orbit [2] |
| Regime | Geostationary orbit |
| Longitude | 118° East 157° East |
| Transponders | |
| Band | 24 C-band |
| Coverage area | Indonesia, southeast Asia, Indian subcontinent |
Telkom-2 is a geosynchronous communications satellite built by Orbital Sciences Corporation (OSC) for Indonesia's state-owned telecommunications company, PT Telekomunikasi Indonesia Tbk (PT Telkom). Telkom-2 was successfully launched 16 November 2005, at 23:46:00 UTC and positioned in geostationary orbit, at 118° East for replaced Palapa-B4.
History
Based on Orbital's highly successful and flight-proven STAR-2 satellite bus, Telkom-2 features state-of-the-art communications satellite technology, and 24 C-band transponders. The new spacecraft replaced PT Telkom's on-orbit Palapa-B4 satellite, improve communications coverage across Indonesia, and allow PT Telkom to expand its coverage area into southeast Asia and the Indian subcontinent. Orbital also is supplementing Telkom's existing ground station, and extensive mission operations support. There are several postpones exist before Telkom-2 was launched. Three postpones happened on November 2005 because of technical problems with Ariane 5 launch vehicle. Other postpones happened during November 2004 until October 2005 with different problems including technical problem with Telkom-2. Orbital's contract with PT Telkom includes an optional order for another geostationary satellite.
Specification of Telkom-2 satellite:
- Owner: PT Telkomunikasi Indonesia Tbk (PT Telkom)
- Mission: C-band communications for Indonesia
- Performance: Repeater - two groups of 15-for-12 linearized traveling wave tube assemblies (TWTAs)
- Transponders Power - 39 watts RF
- Stabilization - three-axis, zero momentum
- Redundancy: Full dual string
- Solar arrays: 2 panel wings with improved triple-junction GaS cells
- Propulsion: Liquid bi-propellant transfer orbit system; monopropellant (hydrazine) on-orbit
- Repeater: Two groups of 15-for-12 linear traveling wave tube assemblies (TWTAs)
- Antenna: Two 2.0 m (6.6 ft) dual-griddled shaped-beam reflectors
References
- ^ "Launch Log". Jonathan's Space Page. 14 March 2021. Retrieved 28 April 2021.
- ^ "TELKOM 2". N2YO.com. Retrieved 28 April 2021.
- Satellites in Space, (orbital.com)
- Article Satelit Telkom-2 telah Diluncurkan, internet: https://web.archive.org/web/20070623104954/http://pribadi.or.id/diary/2005/11/17/satelit-telkom-2-telah-diluncurkan/