Galaxy 25
Galaxy 25 |
Mission type |
Communications |
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Operator |
Loral Skynet (1997-2003) Intelsat (2003—) |
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COSPAR ID |
1997-026A |
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SATCAT № |
24812 |
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Mission duration |
12 years |
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Spacecraft properties |
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Bus |
LS-1300 |
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Manufacturer |
Space Systems/Loral |
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Launch mass |
3,600 kilograms (7,900 lb) |
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Start of mission |
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Launch date |
24 May 1997, 17:00:00 (1997-05-24UTC17Z) UTC |
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Rocket |
Proton-M/DM4 |
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Launch site |
Baikonur 81/23 |
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Contractor |
International Launch Services |
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Orbital parameters |
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Reference system |
Geocentric |
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Regime |
Geostationary |
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Longitude |
97° west (1997-2008) 93° west (1997—) |
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Transponders |
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Band |
24 C-band 28 Ku-band |
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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 / 0; -97, 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 / 0; -93.1 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) | |
- CONUS: 38.8 dBW
- Alaska: 33.7 dBW
- Caribbean: 34.3 dBW
- Hawaii: 33.8 dBW
- Mexico: 33.8 dBW
- Puerto Rico / U.S. Virgin Islands: 34.0 dBW
- Southern Canada: 37.0 dBW
|
e.i.r.p. (Ku-Band) | |
- CONUS: 48.3 dBW
- Alaska: 40.9 dBW
- Caribbean: 43.4 dBW
- Hawaii: 46.4 dBW
- Mexico: 43.6 dBW
- Puerto Rico / U.S. Virgin Islands: 44.9 dBW
- Southern Canada: 44.3 dBW
|
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) | |
- CONUS: -0.7 dB/K
- Alaska: -8.2 dB/K
- Caribbean: -4.7 dB/K
- Hawaii: -5.2 dB/K
- Mexico: -5.4 dB/K
- Puerto Rico / U.S. Virgin Islands: -4.6 dB/K
- Southern Canada: -2.3 dB/K
|
G/T (Ku-Band) | |
- CONUS: +0.7 dB/K
- Alaska: -3.3 dB/K
- Caribbean: -3.2 dB/K
- Hawaii: +0.6 dB/K
- Mexico: -4.2 dB/K
- Puerto Rico / U.S. Virgin Islands: +0.7 dB/K
- Southern Canada: -1.6 dB/K
|
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
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| Main articles | |
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| Spacecraft | | |
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| Intelsat IV |
- IV F-1
- IV F-2
- IV F-3
- IV F-4
- IV F-5
- IV F-6
- IV F-7
- IV F-8
- IVA F-1
- IVA F-2
- IVA F-3
- IVA F-4
- IVA F-5
- IVA F-6
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| Intelsat V |
- V F-1
- V F-2
- V F-3
- V F-4
- V F-5
- V F-6
- V F-7
- V F-8
- V F-9
- VA F-10
- VA F-11
- VA F-12
- VA F-13
- VA F-14
- VA F-15
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| Intelsat VI | |
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| Intelsat 7-10 |
- 701
- 702
- 703
- 704
- 705
- 706
- 707
- 708
- 709
- 801
- 802
- 803
- 804
- 805
- 806
- 901
- 902
- 903
- 904
- 905
- 906
- 907
- 10-02
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| Intelsat | |
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| Galaxy | |
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| Other | |
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