| Mission type | Communications |
|---|---|
| Operator | AsiaSat |
| COSPAR ID | 1999-013A |
| SATCAT no. | 25657 |
| Mission duration | 15 years (planned) 25 years, 5 months and 29 days (in progress) |
| Spacecraft properties | |
| Spacecraft | AsiaSat 3S |
| Spacecraft type | Boeing 601 |
| Bus | HS-601HP |
| Manufacturer | Hughes Space and Communications |
| Launch mass | 3,480 kg (7,670 lb) |
| Dry mass | 2,500 kg (5,500 lb) |
| Dimensions | 3.4 m x 3.5 m x 5.8 m Span: 26.2 m on orbit |
| Power | 9.9 kW |
| Start of mission | |
| Launch date | 21 March 1999, 00:09:30 UTC |
| Rocket | Proton-K / DM-2M |
| Launch site | Baikonur, Site 81/23 |
| Contractor | Khrunichev State Research and Production Space Center |
| Entered service | 8 May 1999 |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Geostationary orbit |
| Longitude | 105.5° East (1999–2014) 120° East (2014–2015) 150.5° East (2015–2016) 146° East (2016–2019) [1] |
| Transponders | |
| Band | 44 transponders: 28 C-band 16 Ku-band |
| Coverage area | Asia, the Middle East and Oceania |
AsiaSat 3S, was a geosynchronous communications satellite for AsiaSat of Hong Kong to provide communications and television services all across Asia, the Middle East and Oceania.