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Telkom-1

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Telkom-1
Spacecraft properties

Mission type	Communications
Operator	PT Telkom
COSPAR ID	1999-042A
SATCAT no.	25880
Website	https://www.telkom.co.id/sites
Mission duration	15 years (planned) 18 years (achieved)


Spacecraft	Telkom-1
Spacecraft type	LM-A2100
Bus	LM-A2100A
Manufacturer	Lockheed Martin
Launch mass	2,763 kg (6,091 lb)
Dry mass	1,700 kg (3,700 lb)


Start of mission
Launch date	12 August 1999, 22:52 UTC
Rocket	Ariane 42P H10-3 (V118)
Launch site	Centre Spatial Guyanais, Kourou, ELA-2
Contractor	Arianespace
Entered service	October 1999


End of mission
Last contact	25 August 2017 ^[1]


Orbital parameters
Reference system	Geocentric orbit
Regime	Geostationary orbit
Longitude	108° East


Transponders
Band	36C-band
Coverage area	Indonesia, Australia

Palapa constellation ← Palapa-C2 Telkom-2 →

Telkom-1 was a geosynchronous communications satellite built by Lockheed Martin, (Sunnyvale, California), for Indonesia's state-owned telecommunications company, PT Telekomunikasi Indonesia Tbk (PT Telkom). It operated for almost 18 years, more than two years past designed lifetime of 15 years.

Launch[edit]

Telkom-1 was successfully launched 12 August 1999, by an Ariane-42P H10-3,^[2] from Centre Spatial Guyanais, pad ELA-2, Kourou, French Guiana, at 22:52 UTC and positioned in geostationary orbit, at 108° East for replaced Palapa-B2R.

Satellite description[edit]

Based on Lockheed Martin A2100A satellite bus, Telkom-1 features communications satellite technology, with 24 C-band and 12 Enhanced C-band transponders. The new spacecraft replaced on-orbit Palapa-B2R satellite, improve communications coverage across Indonesia, and allow PT Telkom to expand its coverage area into Southeast Asia and the Indian subcontinent.^[3] Launch had been delayed because of problems with comsat manufacturing. Telkom-1 is a successor to the Palapa series of satellites, the first (Palapa-A1) of which was launched in 1976. Mass of Telkom-1 is 2,763 kg (6,091 lb) launch, 1,700 kg (3,700 lb) in geostationary orbit (GEO).^[4]

Mission[edit]

Telkom-1 had developed problems with the south solar panel drive, due to a manufacturing error. The satellite was planned to be decommissioned in 2018 and to be replaced by Telkom-4. On 25 August 2017, Telkom-1 lost contact and suffered a massive debris shedding event, and Telkom-1 was retired without being able to move itself into a graveyard orbit.^[1]

References[edit]

^ ^a ^b "Telkom-1". Gunter's Space Page. 12 April 2019. Retrieved 29 April 2021.

^ "Launch Log". Jonathan's Space Report. 14 March 2021. Retrieved 29 April 2021.

^ "Telkom-1 1999-042A". NASA. 27 April 2021. Retrieved 29 April 2021.

This article incorporates text from this source, which is in the public domain.

^ "Report No.406". Jonathan's Space Report. 23 August 1999. Retrieved 29 April 2021.

External links[edit]

v t e Telkom Indonesia
Corporate directors	Ririek Adriansyah (CEO)
Subsidiaries	Telin Telin Singapore Telkomsel Mitratel Telkom Akses Pramindo Multimedia Nusantara TelkomProperty Telkomsigma Finnet Napsindo Digiserve
Joint ventures, affiliates, and investments	Scicom Patrakom Bangtelindo Pasifik Satelit Nusantara (PSN) Citra Sari Makmur Batam Bintan Telekomunikasi
Products and services	Telkomsel Orbit IndiHome
Miscellaneous	Telkom-2 Telkom-3S SEA Today Telkom Foundation Telkom University

v t e ← 1998 Orbital launches in 1999 2000 →
January	Mars Polar Lander ROCSAT-1
February	Stardust Globalstar 23, Globalstar 36, Globalstar 38, Globalstar 40 Telstar 6 JCSAT-6 Soyuz TM-29 ARGOS, Ørsted, SUNSAT Arabsat 3A, Skynet 4E Globus No.15
March	Wide Field Infrared Explorer Globalstar 23, Globalstar 37, Globalstar 41, Globalstar 46 AsiaSat 3S DemoSat
April	Progress M-41, Sputnik 99 INSAT-2E USA-142 Eutelsat W3 Globalstar 19, Globalstar 42, Globalstar 44, Globalstar 45 Landsat 7 UoSAT-12 Ikonos-1 ABRIXAS, Megsat-0 USA-143
May	Orion 3 Feng Yun 1C, Shijian 5 TERRIERS, MUBLCOM Nimiq 1 USA-144 Oceansat-1, Kitsat-3, DLR-Tubsat STS-96 (Starshine 1)
June	Globalstar 25, Globalstar 47, Globalstar 49, Globalstar 52 Iridium 14A, Iridium 21A Astra 1H QuikSCAT FUSE
July	Gran' No.45 Molniya 3-50 Globalstar 30, Globalstar 32, Globalstar 35, Globalstar 51 Progress M-42 Okean-O No.1 STS-93 (Chandra) Globalstar 26, Globalstar 28, Globalstar 43, Globalstar 48
August	Telkom 1, Globalstar 24, Globalstar 27, Globalstar 53, Globalstar 54 Kosmos 2365 Kosmos 2366
September	Koreasat 3 Yamal-101, Yamal-102 Foton 12 Globalstar 33, Globalstar 50, Globalstar 55, Globalstar 58 EchoStar V Ikonos 2 Telstar 7 LMI-1 Resurs F-1M
October	USA-145 DirecTV-1R CBERS-1, SACI-1 Globalstar 31, Globalstar 56, Globalstar 57, Globalstar 59 Orion 2 Ekspress A1
November	GE-4 MTSAT-1 Shenzhou 1 Globalstar 29, Globalstar 34, Globalstar 39, Globalstar 61 USA-146
December	Hélios 1B, Clémentine Orbcomm FM30, Orbcomm FM31, Orbcomm FM32, Orbcomm FM33, Orbcomm FM34, Orbcomm FM35, Orbcomm FM36 XMM-Newton † VLS-1 V02 (SACI-2) USA-147 Terra STS-103 Arirang-1, ACRIMSAT, Millennial Galaxy 11 Kosmos 2367 Kosmos 2368
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).