Mission typeCommunications
OperatorPT Telkom
COSPAR ID1999-042A
SATCAT no.25880
Mission duration15 years (planned)
18 years (achieved)
Spacecraft properties
Spacecraft typeLM-A2100
ManufacturerLockheed Martin
Launch mass2,763 kg (6,091 lb)
Dry mass1,700 kg (3,700 lb)
Start of mission
Launch date12 August 1999, 22:52 UTC
RocketAriane 42P H10-3 (V118)
Launch siteCentre Spatial Guyanais,
Kourou, ELA-2
Entered serviceOctober 1999
End of mission
Last contact25 August 2017 [1]
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit
Longitude108° East
Band36 C-band
Coverage areaIndonesia, Australia

Telkom-1 is a geosynchronous communications satellite built by Lockheed Martin, (Sunnyvale, California), for Indonesia's state-owned telecommunications company, PT Telekomunikasi Indonesia Tbk (PT Telkom).


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]


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.[1]


  1. ^ a b "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