Astra 1C

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Astra 1C
Mission type Communications
Operator SES
COSPAR ID 1993-031A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 22653
Website https://www.ses.com/
Mission duration12 years (planned)
18 years (achieved)
Spacecraft properties
Spacecraft type Boeing 601
Bus HS-601
Manufacturer Hughes Space and Communications
Launch mass2,790 kg (6,150 lb)
Power3.5 kW
Start of mission
Launch date12 May 1993, 00:56:32 UTC
Rocket Ariane 42L (V56)
Launch site Centre Spatial Guyanais, ELA-2
Contractor Arianespace
Entered serviceJuly 1993
End of mission
Disposal Graveyard orbit
Deactivated2015
Orbital parameters
Reference system Geocentric orbit [1]
Regime Geostationary orbit
Longitude Astra 19.2°E (1993-2006)
Astra 5°E (2007-2008)
2°E (2008-2011)
73°W (2014)
1.2°W (2014)
152°W (2014)
40°W (2014-2015)
Transponders
Band18 (+6) Ku-band
Bandwidth26 MHz
Coverage areaEurope
  Astra 1B
Astra 1D  

Astra 1C was a geostationary communications satellite launched in 1993 by SES. The satellite remained in service until 2011 and is now derelict.

Contents

History

Astra 1C was the third communications satellite placed in orbit by SES, and was originally deployed at the Astra 19.2°E orbital position. [2]

The satellite was intended to be replaced in 2002, along with Astra 1B, by Astra 1K but this satellite failed to reach its intended orbit. It was eventually relieved of its remaining television/radio payloads by Astra 1KR in 2006. [3]

In November 2006, prior to the launch of Astra 1L to the 19.2° East position, Astra 1C was placed in an inclined orbit and moved first to 2.0° East for tests, and then in February 2007 to 4.6° East, notionally part of the Astra 5°E cluster of satellites [4] but largely unused.

After November 2008, the satellite operated back at 2.0° East, [5] in an inclined orbit. On 2 November 2011, the satellite was taken out of use as Eutelsat, the rightholder for the 3° allocation, came on air with Eutelsat 3A and current rules ask for a minimum of 2° separation. In the summer of 2014, the satellite was moved to 73° West, close to SES' AMC-6 satellite, [6] to 1.2° West, [7] to 152° West, [8] and to 40° West next to SES-6. [9] From January 2015, it was continuously moving west by approximately 5.2° per day. [10]

See also

Related Research Articles

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<span class="mw-page-title-main">SES (company)</span> Communications satellite owner and operator

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Astra 1B was the second of the Astra communications satellites launched and operated by SES to add extra capacity to the satellite television services from 19.2° East, serving Germany, the United Kingdom and Ireland.

Astra 1D is a geostationary communications satellite launched in 1994 by the Société Européenne des Satellites (SES). As of August 2012, the craft remains in service for occasional use.

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Astra 1E is one of the Astra communications satellites in geostationary orbit owned and operated by SES. It was launched in October 1995 to the Astra 19.2°E orbital slot initially to provide digital television and radio for direct-to-home (DTH) across Europe.

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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 position providing digital television and radio broadcast services to the United Kingdom and Ireland, the satellite was first used after launch in 2001 at 19.2° East for pan-European coverage.

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Astra 1KR is one of the Astra geostationary satellites owned and operated by SES, was purchased in June 2003. It was launched on 20 April 2006, 20:27:00 UTC as a replacement for Astra 1K, which failed to reach orbit on launch in November 2002. The launch of Astra 1KR was the first attempted by SES since the Astra 1K failure.

Astra 1K was a communications satellite manufactured by Alcatel Space for SES. When it was launched on 25 November 2002, it was the largest civilian communications satellite ever launched, with a mass of 5,250 kg (11,570 lb). Intended to replace the Astra 1B satellite and provide backup for 1A, 1C and 1D at the Astra 19.2°E orbital position, the Blok DM3 upper stage of the Proton-K launch vehicle failed to function properly, leaving the satellite in an unusable parking orbit.

Astra 28.2°E is the name for the group of Astra communications satellites co-located at the 28.2° East position in the Clarke Belt that are owned and operated by SES based in Betzdorf, Luxembourg. It is one of the major TV satellite positions serving Europe.

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Astra 23.5°E is a group of Astra communications satellites co-located at the 23.5° east position in the Clarke Belt owned and operated by SES based in Betzdorf, Luxembourg. 23.5° east is one of the major TV satellite positions serving Europe.

Astra 31.5°E is the name for the group of Astra communications satellites co-located at the 31.5° east position in the Clarke Belt owned and operated by SES based in Betzdorf, Luxembourg. 31.5° east is SES' newest orbital location serving Europe.

<span class="mw-page-title-main">Astra 19.2°E</span> Group of communications satellites

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References

  1. "ASTRA 1C". N2YO.com. Retrieved 7 April 2021.
  2. Astra 1C fact sheet
  3. "ASTRA 1KR SATELLITE SUCCESSFULLY LAUNCHED" (Press release). SES ASTRA. 21 April 2006. Retrieved 26 January 2012.
  4. "Astra 1C factsheet". The Satellite Encyclopedia. Retrieved 22 September 2008.
  5. Astra 1C in SES fleet information Archived 2014-02-13 at the Wayback Machine Accessed 3 June 2013
  6. Real Time Satellite Tracking And Predictions Accessed August 2, 2014
  7. Real Time Satellite Tracking And Predictions Accessed 30 September 2014
  8. Real Time Satellite Tracking And Predictions Accessed 28 October 2014
  9. Real Time Satellite Tracking And Predictions Accessed 30 November 2014
  10. Real Time Satellite Tracking And Predictions Accessed 30 January 2015