Horizons-1
| Names | Horizons-1 / Galaxy 13 |
|---|---|
| Mission type | Communication |
| Operator | Intelsat/SKY Perfect JSAT |
| COSPAR ID | 2003-044A |
| SATCATno. | 27954 |
| Website | Intelsat Page JSAT Page Galaxy 13 Page |
| Mission duration | 15 years (planned) 20 years, 10 months, 29 days (in progress) |
| Spacecraft properties | |
| Spacecraft | Horizons-1 |
| Spacecraft type | BSS |
| Bus | BSS-601 |
| Manufacturer | Boeing |
| Launch mass | 4060 kg |
| Dry mass | 2630 kg |
| Dimensions | 26.2 x 7.0 metre with solar panels and antennas deployed. |
| Power | 9900 watts |
| Start of mission | |
| Launch date | 1 October 2003, 04:03:07 UTC[1] |
| Rocket | Zenit-3SL |
| Launch site | Ocean Odyssey Pacific Ocean |
| Contractor | Sea Launch |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Geostationary orbit |
| Longitude | 127.0° West |
| Transponders | |
| Band | Ku-band:24 (+ 8 spares) C-band:24 (+ 8 spares) |
| Frequency | 36 MHz |
| Bandwidth | 1728 MHz |
| Coverage area | North America, Puerto Rico, Alaska, Hawaii and Mexico |
| TWTA power | Ku-band,108 watts C-band,40 watts |
Horizons-1,also known asGalaxy 13,is ageostationarycommunications satelliteoperated byIntelsatandSKY Perfect JSAT(JSAT) which was designed and manufactured byBoeingon theBSS-601platform. It hasKu-bandandC-bandpayload and was used to replaceGalaxy 9at the 127.0° West longitude.[2]It coversNorth America,Puerto Rico,Alaska,HawaiiandMexico.[3][4][5][6]
Satellite description
[edit]The spacecraft was designed and manufactured byBoeingon theBSS-601satellite bus.It had a launch mass of 4,060 kilograms (8,950 lb) and a mass of 2,630 kilograms (5,800 lb) at the beginning of its 15-year design life. When stowed for launch, it measured 5.7 metres (19 ft) of height and 2.7 by 3.6 metres (8 ft 10 in × 11 ft 10 in) on its sides. Its solar panels span 26.2 metres (86 ft) when fully deployed and, with its antennas in fully extended configuration it is 7.0 metres (23.0 ft) wide.[7]
It had two wings with four solar panels each that useddual-junctionGsAssolar cells. Its power system generated 9.9 kW of power at beginning of life and 8.9 kW at the end of its design life and had a 30-cellNiHbattery for surviving solar eclipse.[7]
Its propulsion system was composed of anR-4D-11-300LAEwith a thrust of 490 newtons (110 lbf). It also had twelve 22 newtons (4.9 lbf)bipropellantthrustersforstation keepingandattitude control.ForNorth-South stationkeeping,its primary method was anelectric propulsionsystem with fourXIPS 13,with four of the chemical thrusters acting as backup. It included enough propellant fororbit circularizationand 15 years of operation.[5][7]
It had two 2.7 metres (107 in)Gregorian antennasand 1.3 metres (50 in) two gridded shaped antennas.[7]
ItsKu-bandpayload is composed of 24 active plus eight spares 36 MHztransponderspowered byTWTAwith an output power of 108 watts. It covers North America, Puerto Rico, Alaska, Hawaii and Mexico and is known asHorizons-1.[5][7][8][9][10]
TheC-bandpayload had another 24 plus eight spares 36 MHz transponders powered by 40 watts TWTA. It covers North America, Puerto Rico, Alaska, Hawaii and Mexico and is known asGalaxy 13,which was used to replaceGalaxy 9.[7][11][12]
History
[edit]Horizons Satellitewas originally an equal sharejoint venturewithPanAmSat.On 4 September 2001, it ordered fromBoeingits first satellite,Horizons-1/Galaxy 13.[2]It was a 4,000 kilograms (8,800 lb) spacecraft with 24C-bandand 24Ku-bandtransponders.It had a 10 kW power generation capacity and 15 years of expected life.[7]On the same day of the satellite order, Boeing disclosed that it had received a parallel contract from PanAmSat, where the latter had exercised an existing option to launch Horizons-1 from itsSea Launchsubsidiary.[13]
It was successfully launched on 1 October 2003 at 04:03:07 UTC, aboard aZenit-3SLrocket from theOcean Odysseyplatform stationed at the 154.0° West over the Equator in thePacific Ocean.[4][14]100$ present.
In late 2005, PanAmSat was taken over byIntelsatwho continued the joint venture.
References
[edit]
- ^"Horizons 1".NASA. 14 May 2020.Retrieved16 August2020.
This article incorporates text from this source, which is in thepublic domain.
- ^ab"Boeing to Build New Satellite for PanAmSat, JSAT Joint Venture".Boeing.4 September 2001. Archived fromthe originalon 8 November 2001.Retrieved21 September2016.
- ^"Horizons 1".Satbeams.Retrieved30 August2016.
- ^abKrebs, Gunter Dirk (28 August 2016)."Galaxy 13 / Horizons 1".Gunter's Space Page.Retrieved30 August2016.
- ^abc"Horizons-1".SKY Perfect JSAT.Archived fromthe originalon 18 August 2016.Retrieved30 August2016.
- ^"Satellite Fleet JSAT".SKY Perfect JSAT.Archived fromthe originalon 3 September 2016.Retrieved30 August2016.
- ^abcdefg"Galaxy XIII/Horizons-1".Boeing Satellite Development Center.Archived fromthe originalon 7 February 2010.Retrieved30 August2016.
- ^"Horizons 1 at 127° W".Intelsat.Retrieved30 August2016.
- ^"Who we are".SKY Perfect JSAT.3 August 2012. Archived fromthe original(PDF)on 8 September 2016.Retrieved30 August2016.
- ^"Horizons 1".PanAmSat.Archived fromthe originalon 12 March 2006.Retrieved21 September2016.
- ^"Galaxy 13".PanAmSat.Archived fromthe originalon 12 March 2006.Retrieved21 September2016.
- ^"Galaxy 13 at 127° W".Intelsat.Retrieved30 August2016.
- ^"PanAmSat Exercises Launch Option with Sea Launch".Boeing.4 September 2001. Archived fromthe originalon 8 November 2001.Retrieved21 September2016.
- ^"The Successful Launch of Horizons-1".SKY Perfect JSAT.Archived fromthe originalon 26 April 2007.Retrieved30 August2016.