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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
Orbital parameters
Reference system	Geocentric orbit
Regime	Geostationary orbit
Longitude	108° East
Transponders
Band	36 C-band
Coverage area	Indonesia, Australia
Palapa constellation← Palapa-C2Telkom-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

Telkom-1 was successfully launched 12 August 1999, by an Ariane-42P H10-3, 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. 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).

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.

References

1. ^ "Telkom-1". Gunter's Space Page. 12 April 2019. Retrieved 29 April 2021.
2. "Launch Log". Jonathan's Space Report. 14 March 2021. Retrieved 29 April 2021.
3. "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.
4. "Report No.406". Jonathan's Space Report. 23 August 1999. Retrieved 29 April 2021.

External links

• Telkom-2
• Telkom-1

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