Telkom-2

Telkom-2
Spacecraft properties

Mission type	Communications
Operator	PT Telkom
COSPAR ID	2005-046A
SATCAT №	28902
Mission duration	15 years

Bus	Star-2
Manufacturer	Orbital Sciences
Launch mass	1,930 kilograms (4,250 lb)

Start of mission
Launch date	16 November 2005, 23:46:00 (2005-11-16UTC23:46Z) UTC^[1]
Rocket	Ariane 5ECA V167
Launch site	Kourou ELA-3
Contractor	Arianespace

Orbital parameters
Reference system	Geocentric
Regime	Geostationary
Longitude	118° east
Perigee	35,783 kilometres (22,235 mi)
Apogee	35,800 kilometres (22,200 mi)
Inclination	0.03 degrees
Period	23.93 hours
Epoch	29 October 2013, 18:26:25 UTC^[2]

Transponders
Band	28 C-band

Telkom-2 is a C-band geosynchronous communications satellite built by Orbital for Indonesia's state-owned telecommunications company, PT Telekomunikasi Indonesia Tbk (PT Telkom). TELKOM-2 was successfully launched November 16, 2005, and positioned in geosynchronous orbit, 22,300 miles above the Earth, at 118°E (0°N 118°E / 0°N 118°E / 0; 118Coordinates: 0°N 118°E / 0°N 118°E / 0; 118).

Based on Orbital's highly successful and flight-proven STAR-2 spacecraft platform, TELKOM-2 features state-of-the-art communications satellite technology, and 24 C-band transponders. The new spacecraft will replace 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.

In addition to providing the spacecraft bus and payload, Orbital is supplementing Telkom's existing ground station through the addition of a state-of-the-art ground station including all hardware and software. Orbital is also providing 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 rocket. 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 geosynchronous 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)
Transponder Power - 39 watts RF
Stabilization - 3-axis, zero momentum
Launch mass - 1,930 kg
Mission life - 15 years (>15 years of fuel)
Launched on November 16, 2005 by Ariane 5 ECA rocket in Guiana Space Centre in Kourou, French Guiana
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
Frequency: C-band
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

↑ McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 30 October 2013.
↑ "TELKOM 2 Satellite details 2005-046A NORAD 28902". N2YO. 29 October 2013. Retrieved 30 October 2013.

Satellites in Space, (orbital.com)
Article Satelit Telkom-2 telah Diluncurkan, internet: http://pribadi.or.id/diary/2005/11/17/satelit-telkom-2-telah-diluncurkan/

External links

Telkom Indonesia

Corporate directors	Alex Sinaga (CEO)

Subsidiaries	Telin Telkomsel Infomedia Mitratel Telkom Akses Pramindo Multimedia Nusantara TelkomProperty Telkomsigma Finnet Napsindo

Joint ventures, affiliates, and investments	Scicom Patrakom Bangtelindo Pasifik Satelit Nusantara (PSN) Citra Sari Makmur Batam Bintan Telekomunikasi

Products and services	TelkomFlexi Flexinet TelkomSpeedy TelkomselFlash simPATI Kartu Halo Kartu AS Groovia TV

Miscellaneous	Telkom-2 Telkom-3 Telkom-3S

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Payloads are separated by bullets ( · ), launches by pipes ( \| ). Manned flights are indicated in bold text. Uncatalogued launch failures are listed in italics. Payloads deployed from other spacecraft are denoted in brackets.

National Institute of Aeronautics and Space

Satellites	Past and current Palapa A (1976/77) Palapa B (1983/92) Palapa C (1996) IndoStar-1 (1997) Telkom-1 (1999) Garuda 1 (2000) Telkom-2 (2005) IndoStar-2 (2009) Palapa D (2009) LAPAN-Tubsat (2007) Telkom-3 (2012) LAPAN-A2 (2015) In development LAPAN-A3 Palapa E

Rockets	Past and current Roket Eksperimental RX-250-LPN In development RX-550 RPS-420 Pengorbitan

Launch sites	Current Lapan Space Center Pameungpeuk Rocket Flight Test Station Planned Biak International Spaceport Enggano Lauchpad Morotai Spaceport

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