Astra 2C
| Mission type | Communication |
|---|---|
| Operator | SES Astra SES S.A. |
| COSPAR ID | 2001-025A |
| SATCAT no. | 26853 |
| Mission duration | 15 years |
| Spacecraft properties | |
| Bus | BSS 601 HP |
| Manufacturer | Boeing Satellite Systems |
| Launch mass | 3,643 kilograms (8,031 lb) |
| Power | 7,000 W |
| Start of mission | |
| Launch date | 16 June 2001, 01:49:00 UTC |
| Rocket | Proton-K/DM3 |
| Launch site | Baikonur 81/23 |
| Contractor | ILS |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Longitude | 19.2° East (2001-2007) 28.2° East 2007-2009) 31.5° East (2009-2010) 19.2° East (2010-2014) 28.2° East (2014-) |
| Slot | Astra 19.2°E (2001-07, 2010-14) Astra 28.2°E (2007-09, 2014-) Astra 31.5°E (2009-10) |
| Perigee altitude | 35,780 kilometres (22,230 mi)[1] |
| Apogee altitude | 35,803 kilometres (22,247 mi)[1] |
| Inclination | 0.07 degrees[1] |
| Period | 1436.06 minutes[1] |
| Epoch | 26 October 2014, 04:37:12 UTC[1] |
| Transponders | |
| Band | 32 Ku band (to be reduced to 28 by end of life) |
| Bandwidth | 33 MHz |
| Coverage area | United Kingdom Ireland |
| TWTA power | 105 W |
| EIRP | 51 dBW |
Astra 2C is one of the Astra communications satellites owned and operated by SES. Designed to join Astra 2A and Astra 2B at the Astra 28.2°E orbital slot providing digital television and radio broadcast services to the UK and Republic of Ireland, the satellite was first used at 19.2°E for pan-European coverage.
The satellite provides one broadcast beam with horizontal and vertical polarisation, across a single footprint covering the areas of Central and Eastern Europe, Scandinavia, the Iberian peninsula and Canary Islands.[2]
TV signals can be received with a 50 cm dish across the majority of the British Isles with a 60 cm dish required in the extreme north and west.
Astra 2C can also provide backup capacity, substituting for one or more transponders across the 10.70 GHz-12.20 GHz broadcast range used by Astra satellites in the Astra 19.2°E and Astra 28.2°E orbital positions, and was first deployed after launch in 2001 at 19.2°E.
The satellite was moved to 28.2°E in August 2007, transmitting digital TV and interactive services for Sky Digital and Freesat.[3] Only two transponders were active during this time.
Temporary use at 31.5°E
In March 2009, SES announced that in April, Astra 2C was to be moved from 28.2° east to Astra 31.5°E to temporarily replace the failed Astra 5A until Astra 3B was launched to Astra 23.5°E, when another craft currently there could be released to Astra 31.5°E.[4] The move of Astra 2C was started in early May 2009 and completed on 11 May,[5] with the first transponders coming into use at the new position in the subsequent two weeks.
In June 2010, Astra 3B (launched May 2010) came into operation at Astra 23.5°E and Astra 1G was moved from that position to Astra 31.5°E, where it could release take over all broadcasting activity from Astra 2C. Astra 2C left 31.5°E in September 2010.
Temporary use at 19.2°E
Astra 2C was first positioned at 19.2°E after launch in 2001, to provide pan-European capacity at the primary Astra position pending the launch of Astra 1L (in May 2007) and was moved to 28.2°E in August 2007.
The satellite was returned to 19.2°E in September 2010 while Astra 1N, which was intended for positioning at Astra 19.2°E, was used at Astra 28.2°E. As of July 2012, there are 16 transponders active, in particular six for the Spanish Canal+ pay-TV platform and five for Sky Deutschland.[6]
Astra 2C was returned to its originally intended position at Astra 28.2°E after the relocation of Astra 1N from 28.2°E to 19.2°E in March 2014.
See also
- Astra 28.2°E – orbital position
- Astra 19.2°E – previous orbital position
- Astra 31.5°E – previous orbital position
- Astra 1N
- SES satellite operator
- Astra satellite family
References
- ^ a b c d e "ASTRA 2C Satellite details 2001-025A NORAD 26853". N2YO. 26 October 2014. Retrieved 26 October 2014.
- ^ "Astra 2C". SES. Retrieved 26 January 2012.
- ^ "Astra 2C at 28.2°E". LyngSat. Archived from the original on 11 August 2008. Retrieved 12 August 2008.
{{cite web}}: Unknown parameter|deadurl=ignored (|url-status=suggested) (help) - ^ "SES To Move ASTRA 2C Satellite To 31.5 Degrees East To Support Development Of New Orbital Position" (Press release). SES Astra. 10 March 2009. Retrieved 26 January 2012.
- ^ Astra 2C arrived at 31.5 East. LyngSat. Retrieved 1 June 2009
- ^ "Astra 2C at 19.2°E". LyngSat. Retrieved 24 July 2012.
External links
- SES guide to receiving Astra satellites
- SES guide to channels broadcasting on Astra satellites
- OnAstra – Official consumers/viewers' site
- SES – Official trade/industry site
- Astra 2C North beam footprint on SatBeams
- Astra 2C South beam footprint on SatBeams
- IMS Official provider's site