Engineering:Telkom-1
| 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 properties | |
| 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 | 36 C-band |
| Coverage area | Indonesia, Australia |
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
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
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
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
- ↑ 1.0 1.1 "Telkom-1". Gunter's Space Page. 12 April 2019. https://space.skyrocket.de/doc_sdat/telkom-1.htm.
- ↑ "Launch Log". Jonathan's Space Report. 14 March 2021. https://planet4589.org/space/log/launchlog.txt.
- ↑ "Telkom-1 1999-042A". NASA. 27 April 2021. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1999-042A.
This article incorporates text from this source, which is in the public domain.
- ↑ "Report No.406". Jonathan's Space Report. 23 August 1999. https://planet4589.org/space/jsr/back/news.406.txt.
External links
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