Telkom-1

{{Infobox spaceflight

| name = Telkom-1

| names_list =

| image =

| image_caption =

| image_size = 300px

| mission_type = Communications

| operator = PT Telkom

| COSPAR_ID = 1999-042A

| SATCAT = 25880

| website = https://www.telkom.co.id/sites

| mission_duration = 15 years (planned)
18 years (achieved)

| spacecraft = Telkom-1

| spacecraft_type = LM-A2100

| spacecraft_bus = LM-A2100A

| manufacturer = Lockheed Martin

| launch_mass = {{cvt|2763|kg}}

| dry_mass = {{cvt|1700|kg}}

| dimensions =

| power =

| launch_date = 12 August 1999, 22:52 UTC

| launch_rocket = Ariane 42P H10-3 (V118)

| launch_site = Centre Spatial Guyanais,
Kourou, ELA-2

| launch_contractor = Arianespace

| entered_service = October 1999

| disposal_type =

| deactivated =

| last_contact = 25 August 2017

| orbit_reference = Geocentric orbit

| orbit_regime = Geostationary orbit

| orbit_longitude = 108° East

| apsis = gee

| trans_band = 36 C-band

| trans_frequency =

| trans_bandwidth =

| trans_capacity =

| trans_coverage = Indonesia, Australia

| programme = Palapa constellation

| previous_mission = Palapa-C2

| next_mission = 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

Telkom-1 was successfully launched 12 August 1999, by an Ariane-42P H10-3,{{cite web|url=https://planet4589.org/space/log/launchlog.txt|title=Launch Log|publisher=Jonathan's Space Report|date=14 March 2021|access-date=29 April 2021}} 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.{{cite web|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1999-042A |title=Telkom-1 1999-042A|publisher=NASA|date=27 April 2021|access-date=29 April 2021}} {{PD-notice}} 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 {{cvt|2763|kg}} launch, {{cvt|1700|kg}} in geostationary orbit (GEO).{{cite web |url=https://planet4589.org/space/jsr/back/news.406.txt|title=Report No.406|publisher=Jonathan's Space Report|date=23 August 1999|access-date=29 April 2021}}

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.{{cite web|url=https://space.skyrocket.de/doc_sdat/telkom-1.htm|title=Telkom-1|publisher=Gunter's Space Page|date=12 April 2019|access-date=29 April 2021}}

References

External links

[http://www.lyngsat.com/telkom2.html Telkom-2]
[http://www.lyngsat.com/telkom1.html Telkom-1]

Category:Communications satellites

Category:Satellites using the A2100 bus

Category:Satellites in geosynchronous orbit

Category:Lockheed Martin satellites and probes

Category:Satellites of Indonesia

Category:Ariane commercial payloads

Category:Spacecraft that broke apart in space