Galaxy 25
Mission type | Communications |
---|---|
Operator |
Loral Skynet (1997-2003) Intelsat (2003—) |
COSPAR ID | 1997-026A |
SATCAT № | 24812 |
Mission duration | 12 years |
Spacecraft properties | |
Bus | LS-1300 |
Manufacturer | Space Systems/Loral |
Launch mass | 3,600 kilograms (7,900 lb) |
Start of mission | |
Launch date | 24 May 1997, 17:00:00 UTC |
Rocket | Proton-M/DM4 |
Launch site | Baikonur 81/23 |
Contractor | International Launch Services |
Orbital parameters | |
Reference system | Geocentric |
Regime | Geostationary |
Longitude |
97° west (1997-2008) 93° west (1997—) |
Transponders | |
Band |
24 C-band 28 Ku-band |
Galaxy 25 (G-25) launched in 1997 (formerly known as Intelsat Americas 5 (IA-5) until February 15, 2007 when it was renamed as result of the merger between owner Intelsat and PanAmSat or Telstar 5) is a medium-powered communications satellite formerly in a geostationary orbit at 0°N 97°W / 0°N 97°W, above a point in the Pacific Ocean several hundred miles west of the Galapagos Islands. It was manufactured by Space Systems/Loral, part of its FS-1300 line, and is currently owned and operated by Intelsat. The satellite's main C-band transponder cluster covers the United States, southern Canada, and Mexico; its main Ku band transponder cluster covers the U.S., Mexico, and the northern Caribbean Sea. An additional C-band and a Ku band transponder pair targets the Hawaiian Islands.
Galaxy 25 has a projected life of 12 years. It was replaced by Galaxy 19 (formerly IA-9) in late 2008.[1] When it was last in service at 97 degrees west, Galaxy 25 transmitted both free-to-air (FTA) direct-to-home (DTH) broadcasting and encrypted subscription channels / services. The replacement satellite, Galaxy 19 was successfully launched on September 24, 2008.[2] Galaxy 25 has been moved to a different orbital position at 0°00′N 93°06′W / 0°N 93.1°W where it is currently broadcasting several services on its Ku band transponders.
Technical details
Key Parameters | ||
---|---|---|
Total Transponders | C-Band: | 24x36 MHz |
Ku-Band: | 4x54 MHz, 24x27 MHz | |
Polarization | C-Band: | Linear - Horizontal or Vertical |
Ku-Band: | Linear - Horizontal or Vertical | |
e.i.r.p. (C-Band) |
| |
e.i.r.p. (Ku-Band) |
| |
Uplink Frequency | C-Band: | 5925 to 6425 MHz |
Ku-Band: | 14.00 to 14.50 GHz | |
Downlink Frequency | C-Band | 3700 to 4200 MHz |
Ku-Band: | 11.7 to 12.2 GHz | |
G/T (C-Band) |
| |
G/T (Ku-Band) |
| |
SFD Range (Beam Edge) | C-Band: | -92.0 to -71.0 dBW/m2 |
Ku-Band: | -96.0 to -75.0 dBW/m2 |
Platform operators
The Ku-Band side of the satellite carried the platforms of Pittsburgh International Telecommunications, Inc (PIT), Globecast, RRSat, and ABS-CBN, with free-to-air and encrypted television and radio programming in a variety of languages:
See also
References
- ↑ http://www.intelsat.com/network/satellite/scheduled-launch.asp Intelsat launch information
- ↑ http://news.yahoo.com/s/ap/20080924/ap_on_re_us/rocket_launches Two Rockets Launched
External links
- RRsat website
- Intelsat website
- Pittsburgh International Telecommunications Information
- Channels carried on Galaxy 25 (Lyngsat)
- Globecast website