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Astra 1E

FieldValue
nameAstra 1E
image_size300px
mission_typeCommunications
operatorSES
COSPAR_ID1995-055A
SATCAT23686
websitehttps://www.ses.com/
mission_duration15 years (planned)
19 years, 8 months (achieved)
spacecraft_typeBoeing 601
spacecraft_busHS-601
manufacturerHughes Space and Communications
launch_mass3014 kg
power4.7 kW
launch_date19 October 1995, 00:38:00 UTC
launch_rocketAriane 42L H10-3 (V79)
launch_siteCentre Spatial Guyanais, ELA-2
launch_contractorArianespace
entered_serviceDecember 1995
disposal_typeGraveyard orbit
deactivatedJune 2015
orbit_referenceGeocentric orbit
orbit_regimeGeostationary orbit
orbit_longitude19.2° East (1995-2007)
23.5° East (2007-2010)
5.2° East (2010-2012)
108.2° East (2012-2014)
31.5° East (2014-2015)
23° East (2015)
apsisgee
trans_band18 Ku-band
trans_bandwidthFSS: 26 Mhz
BSS: 33 MHz
trans_coverageEurope
programmeAstra constellation
previous_missionAstra 1D
next_missionAstra 1F

19 years, 8 months (achieved) 23.5° East (2007-2010) 5.2° East (2010-2012) 108.2° East (2012-2014) 31.5° East (2014-2015) 23° East (2015) BSS: 33 MHz

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.

Astra 1E was the first Astra satellite to be dedicated to digital television broadcasting and it carried many of the first digital television channels from networks broadcasting to France, Germany, and other European countries in the 1990s.

The satellite originally provided two broadcast beams, of horizontal and vertical polarisation, for Fixed Service Satellite (FSS) (10.70-10.95 GHz) and for Broadcast Satellite Service (BSS) (11.70-12.10 GHz) frequency bands. The FSS beams provide footprints that cover essentially the same area of Europe – northern, central and eastern Europe, including Spain and northern Italy – while the BSS horizontal beam excludes Spain and extends further east, and the BSS vertical beam includes Spain and more of southern Italy but does not extend so far east. Within the footprints, television signals are usually received with a 60–80 cm dish.

History

In October 2007, following the successful deployment of Astra 1L at 19.2° East, Astra 1E was moved to Astra's new DTH orbital position, 23.5° East where it provided capacity for the transmission of new services including the ASTRA2Connect two-way satellite broadband Internet service which provides high speed internet access and Voice over IP (VoIP) without landline connection at up to 2 Mbit/s download speeds and 128 kbit/s upload using four Ku-band transponders for both forward and return paths from the user's remote terminal.

In May 2010, Astra 3B was launched to the 23.5° East position, coming into service in June 2010, at which time the services using Astra 1E were transferred to the new craft. In August 2010, Astra 1E left the 23.5° East position moving westwards, to the Astra 5°E position to provide backup for Astra 4A pending the launch of Astra 4B to that position in 2011. At 5° East, Astra 1E carried very little television traffic. Following the launch of Astra 4B (renamed to SES-5) in February 2012, Astra 1E was moved to 108.2° East, in inclined orbit and with no traffic, and then to 31.5° East in Summer 2013. It returned to 23° East in February 2015.

in June 2015, the satellite was retired and was moved into a graveyard orbit above the geostationary belt, moving 5.4° West per day.

References

References

  1. "ASTRA 1E". N2YO.com.
  2. "Astra 1E". SES ASTRA.
  3. (October 23, 2007). "23.5° East is a new orbital slot for Direct to Home and ASTRA2Connect / ASTRA 1E replaces ASTRA 1D". SES ASTRA.
  4. SES ASTRA "ASTRA2Connect Broadband and VoIP" (August 2008) SES Fact Sheet
  5. "Astra 1E at 23.5° E". LyngSat.
  6. "Astra 1E at 4.6° E". LyngSat.
  7. (April 18, 2012). "SES-4 Satellite Now Operational". SES ASTRA.
  8. [http://www.n2yo.com/satellites/?c=34&srt=1&dir=1 Real Time Satellite Tracking And Predictions] Accessed February 27, 2015
  9. [http://www.n2yo.com/satellites/?c=34&srt=1&dir=1 Real Time Satellite Tracking And Predictions] Accessed June 29, 2015
  10. (11 December 2017). "Astra 1E, 1F". Gunter's Space Page.
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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