| Telkom-3S | |
| Operator: | Telkom Indonesia |
| Cospar Id: | 2017-007A |
| Satcat: | 41944 |
| Website: | https://www.telkom.co.id/sites |
| Mission Duration: | 16 years (planned) (in progress) |
| Spacecraft: | Telkom-3S |
| Spacecraft Type: | Spacebus |
| Spacecraft Bus: | Spacebus-4000B2 |
| Manufacturer: | Thales Alenia Space |
| Dimensions: | 1.8 m x 2.95 m x 2.86 m |
| Power: | 6.4 kW |
| Launch Date: | 14 February 2017, 21:39 UTC |
| Launch Rocket: | Ariane 5ECA (VA235) |
| Launch Site: | Centre Spatial Guyanais, Kourou, ELA-3 |
| Launch Contractor: | Arianespace |
| Entered Service: | 17 April 2017 |
| Orbit Reference: | Geocentric orbit[1] |
| Orbit Regime: | Geostationary orbit |
| Orbit Longitude: | 118° East |
| Apsis: | gee |
| Trans Band: | 42 transponders: 24 C-Band 8 Extended C-Band 10 Ku-Band |
| Trans Coverage: | Indonesia, Southeast Asia, Malaysia |
| Programme: | Palapa constellation |
| Previous Mission: | Telkom-3 |
| Next Mission: | Telkom-4 |
Telkom-3S is an Indonesian geostationary communications satellite built as a replacement of Telkom-3 that was lost due to a launch failure on 6 August 2012.[2] Telkom-3S was successfully launched on 14 February 2017, at 21:39 UTC[3] and commissioned into service on 17 April 2017.[4]
Telkom-3S is fitted with 24 C-Band transponders, 8 extended C-Band transponders and 10 Ku-Band transponders. The C-band payload will cover Indonesia and Southeast Asia, while the extended C-band payload will cover both Indonesia and part of Malaysia. The Ku-band payload will specifically cover Indonesia. Telkom-3S will provide high-definition television (HDTV) services along with mobile communications and internet applications.