Ensiklopedia Dunia

Technopedia Center

Faculty of Engineering and Computer Science
S1 Informatics S1 Information Systems S1 Information Technology S1 Computer Engineering S1 Electrical Engineering S1 Civil Engineering

faculty of Economics and Business
S1 Management S1 Accountancy

Faculty of Letters and Educational Sciences
S1 English literature S1 English language education S1 Mathematics education S1 Sports Education

Astra 2B - Wikipedia

From Wikipedia, the free encyclopedia

Astra 2B
Spacecraft properties

Mission type	Communications
Operator	SES
COSPAR ID	2000-054A
SATCAT no.	26494
Website	https://www.ses.com
Mission duration	Planned: 15 years Final: <20 years and 9 months


Spacecraft type	Eurostar
Bus	Eurostar E2000+
Manufacturer	Astrium (now Airbus Defence and Space)
Launch mass	3,315 kg (7,308 lb)
Power	7.8 kW


Start of mission
Launch date	14 September 2000, 22:44:47 UTC
Rocket	Ariane 5G (V130)
Launch site	Centre Spatial Guyanais, ELA-3
Contractor	Arianespace
Entered service	November 2000


End of mission
Disposal	Graveyard orbit
Deactivated	June 2021


Orbital parameters
Reference system	Geocentric orbit^[1]
Regime	Geostationary orbit
Longitude	Astra 28.2°E (2000-2013) Astra 19.2°E (2013-2014) Astra 31.5°E (2014-2016) Astra 19.2°E (2016-2017) 20° West (2017-2018) Astra 19.2°E (2018-2021)


Transponders
Band	30 Ku-band
Bandwidth	33 MHz
Coverage area	Europe, Middle East, Africa

Astra constellation ← Astra 1H Astra 2D →

Astra 2B is one of the Astra communications satellites owned and operated by SES. Launched in September 2000 to join Astra 2A at the Astra 28.2°E orbital position providing digital television and radio broadcast services to the United Kingdom and Ireland, the satellite has also served at the Astra 19.2°E and the Astra 31.5°E positions.

History

The satellite provides two broadcast beams, each with horizontal and vertical polarisation, across two footprints - 2B North (covering Central Europe and Scandinavia) and 2B South (covering Central Europe and the Iberian Peninsula and Canary Islands).^[2]

While at 28.2° East, television signals could be received with a 43 cm dish across the majority of the British Isles with a 60 cm dish required in the extreme north and west, although the official footprint maps now show a 60 cm dish as required across all of Western Europe.^[3] At 28.2° East, 17 transponders on Astra 2B were used by BSkyB to provide the Sky Digital television services of standard and high-definition television (HDTV) and digital radio.^[4] Astra 2B could also provide backup capacity, substituting for one or more transponders across the whole 10.70-12.75 GHz range used by Astra satellites in the Astra 19.2°E and Astra 28.2°E orbital positions. A third, steerable beam provides 8 transponders in the 12.50-12.75 GHz range for Internet and telecommunications services in West Africa. This aspect of the satellite was originally the commercial responsibility of SES New Skies (now incorporated into SES).

Following the launch of Astra 2F to 28.2° East, in February 2013, Astra 2B started its planned move from that position to Astra 19.2°E, to serve alongside Astra 1KR, Astra 1L, Astra 1M, and Astra 2C,^[5] arriving in position by 27 February 2013.^[6] In January 2014, Astra 2B moved to the Astra 31.5°E orbital position, pending the delayed launch of Astra 5B to that position and stayed there as back-up ^[7] until it was moved back to 19.2° East in December 2016.^[8] In June 2017, it was moved west at approximately 0.6°/day to arrive alongside NSS-7 at 20° West in August 2017.^[9] From April 2018 to July 2018, Astra 2B was moved east at 0.6°/day to Astra 19.2°E.^[10] Since June 2021, Astra 2B has been non-operational and moving west at approximately 4.9°/day.^[11]

References

^ "ASTRA 2B". N2YO.com. Retrieved 8 April 2021.
^ "Astra 2B Footprints". SES. Archived from the original on 27 October 2011. Retrieved 8 April 2021.
^ "ASTRA 2B". SES. Archived from the original on 12 March 2013. Retrieved 8 April 2021.
^ "Astra 2B at 28.2°E". LyngSat. Archived from the original on 11 August 2008. Retrieved 12 August 2008.
^ Our global satellite fleet SES booklet November 2012 Archived 2012-08-16 at the Wayback Machine fleet plan for 2015. Accessed February 15, 2013
^ Astra 2B in lyngsat.com SatTracker Accessed February 27, 2013
^ Real Time Satellite Tracking And Predictions - Astra 2B Accessed February 20, 2014
^ Real Time Satellite Tracking And Predictions Accessed December 29, 2016
^ Real Time Satellite Tracking And Predictions Accessed August 28, 2017
^ Real Time Satellite Tracking And Predictions Accessed July 27, 2018
^ Real Time Satellite Tracking And Predictions Accessed June 26, 2021

External links

v t e Satellites operated by SES
SES fleet	Active: SES-1 2 3 4 5 6 7 8 9 10 11 (EchoStar 105) 12 14 15 16 (GovSat-1) 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 To be activated: Astra 1P 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 Subsidiary: SES Astra
Third parties	Active: Ciel-2 MonacoSAT QuetzSat 1 Yahsat 1A

v t e ← 1999 Orbital launches in 2000 2001 →
January	USA-148 Galaxy 10R Feng Huo 1 JAWSAT, FalconSAT-1, ASUSat-1, OCSE, OPAL (STENSAT, MEMS 1A, MEMS 1B, MASAT, Thelma, Louise)
February	Progress M1-1 Kosmos 2369 Hispasat 1C Globalstar 60, Globalstar 62, Globlastar 63, Globalstar 64 Gruzovoy Maket, IRDT-1 ASTRO-E STS-99 Garuda 1 Superbird-B2
March	Ekspress A2 MTI ICO F1 Dumsat INSAT-3B, AsiaStar IMAGE
April	Soyuz TM-30 SESAT 1 Galaxy 4R Progress M1-2
May	GOES 11 Kosmos 2370 USA-149 USA-150 SimSat 1, SimSat 2 STS-101 Eutelsat W4
June	Gorizont No.45L TSX-5 Ekspress A3 Fengyun 2B, Nadezhda 6, Tsinghua 1, SNAP-1 TDRS-8 Sirius FM-1
July	Kosmos 2371 Zvezda EchoStar VI CHAMP, MITA, Rubin-1 USA-151 Samba, Salsa Sindri (MEMS 2A, MEMS 2B) PAS-9
August	Progress M1-3 Rumba, Tango Brazilsat B4, Nilesat 102 USA-152 DM-F3 Globus No.16L
September	Zi Yuan 2 Sirius FM-2 Eutelsat W1 STS-106 Astra 2B GE-7 NOAA-16 Kosmos 2372 Megsat 1, Unisat 1, Saudisat 1A, Saudisat 1B, TiungSAT-1 Kosmos 2373
October	GE-1A N-SAT-110 HETE-2 STS-92 (ITS Z1, PMA-3) Kosmos 2374, Kosmos 2375, Kosmos 2376 Progress M-43 USA-153 Thuraya 1 GE-6 Europe*Star 1 Beidou 1A Soyuz TM-31
November	USA-154 PAS-1R, AMSAT-P3D, STRV 1C, STRV 1D Progress M1-4 QuickBird-1 EO-1, SAC-C, Munin Anik F1 Sirius FM-3
December	STS-97 (ITS P6) EROS A USA-155 Astra 2D, GE-8, LDREX Beidou 1B Gonets-D1 No.7, Gonets-D1 No.8, Gonets-D1 No.9, Strela-3 No.125, Strela-3 No.126, Strela-3 No.127
Launches are separated by dots ( • ), payloads by commas ( , ), multiple names for the same satellite by slashes ( / ). Crewed flights are underlined. Launch failures are marked with the † sign. Payloads deployed from other spacecraft are (enclosed in parentheses).

Categories:

Hidden categories:

History

See also

References

External links