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Astra 2A is one of the Astra communications satellites owned by SES. Launched in 1998 into the 28.2E orbital position, half its expected end-of-life capacity of 28 transponders were pre-booked by BSkyB, who utilised it to launch their new Sky Digital service. In March 2015, the satellite has been deactivated and relocated to 113.5°E.

Contents

1 History 2 See also 3 References 4 External links

History[edit] The satellite suffered pre-launch technical issues with its apogee motors and was moved to a launch by the Proton rocket rather than the Ariane 5, as the Proton can inject directly in GEO.[2] When positioned at 28E, it joined DFS Kopernikus 1, which served mainly Eastern Europe. The satellite was the first of Astra's craft to never carry analogue television services (with the exception of a solitary test card in 1999[3]), and as of 2006, carried standard definition digital television, digital radio, and high-definition digital television, as well as Sky Interactive streams and the AVC Broadband and Silvermead satellite Internet services. Two beams "2A North" and "2A South" transmit on horizontal and vertical polarisation. The South beam covers almost all of Europe, with the North beam covering only Northern Europe at a high power. In March 2015, two years beyond Astra 2A's projected lifespan, and following the launches of Astra 2E in 2013, Astra 2F in 2012, and Astra 2G in 2014 to 28.2°E, all remaining traffic was transferred from Astra 2A to the newer satellites.[4] From March 25, 2015, Astra 2A remained at 28.2°E, inactive, and was expected to be moved to Astra 23.5°E to operate as a backup satellite to Astra 3B[5] but in the summer of 2016 it was instead moved to 113.5°E.[6] See also[edit]

Spaceflight portal

Astra 2E Astra 2F Astra 2G Astra 2B Astra 2C Astra 2D Astra 28.2°E main lifetime orbital position

References[edit]

^ a b c d e "ASTRA 2A Satellite details 1998-050A NORAD 25462". N2YO. 25 January 2015. Retrieved 25 January 2015.  ^ The Satellite Encyclopaedia ^ LyngSat (archived) ^ Astra 2A frequencies moved to Astra 2E and 2F The Sat And PC Guy March 5, 2015. Accessed March 25, 2015 ^ Where markets grow via satellite: Our global satellite fleet SES January 2012 ^ Real Time Satellite Tracking And Predictions Accessed October 30, 2016

External links[edit]

Astra 2A Ku-band North Beam footprint(s) at SatBeams Astra 2A Ku-band South Beam footprint(s) at SatBeams SES guide to receiving Astra satellites SES guide to channels broadcasting on Astra satellites OnAstra - Official consumers/viewers' site SES - Official trade/industry site

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Satellites operated by SES S.A.

SES fleet

Active: SES-1 2 3 4 5 6 7 8 9 10 11 14 15 16 (GovSat-1) Planned: SES-12 17

AMC fleet

Active: AMC-4 6 8 10 11 15 16 18 21 Backups: AMC-7 Retired: AMC-1 2 3 5 9 Failed launch: AMC-14

NSS fleet

Active: NSS-6 7 9 10 11 12 806 Retired: NSS-5 513 703 K Failed launch: NSS-8

Astra fleet

Active: Astra 1KR 1L 1M 1N 2E 2F 2G 3B 4A 5B

Backups: Astra 1D 1F 1G 1H 2A 2B 2C 2D 3A Retired: Astra 1A 1B 1C 1E 5A Sirius 3 Failed launch: Astra 1K

Orbital positions: 5.0°E 19.2°E 23.5°E 28.2°E 31.5°E

Third parties

Active: Ciel-2 MonacoSAT QuetzSat 1 Yahsat 1A

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