AMC-23

Short description: American communications satellite

AMC-23Names| GE-2i
Worldsat-3
AMC-13
GE-23
Eutelsat-172A
Eutelsat-174A

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Mission type| Communications
Operator| SES Americom (2005-2009)
SES World Skies (2009-2011)
SES S.A. (2011-2012)
Eutelsat (2012-present)
COSPAR ID| 2005-052A
SATCAT no.| 28924
Mission duration| 16 years (planned)
20 years, 4 months, 10 days (elapsed)
Spacecraft properties
Spacecraft| GE-23 [1]
Spacecraft type| Spacebus 4000
Bus| Spacebus 4000C3
Manufacturer| Alcatel Space
Launch mass| 4,981 kg (10,981 lb)
Start of mission
Launch date| 29 December 2005,
02:28:40 UTC
Rocket| Proton-M / Briz-M
Launch site| Baikonur Cosmodrome,
Site 81/24
Contractor| Khrunichev State Research and Production Space Center
Entered service| Mars 2006
Orbital parameters
Reference system| Geocentric orbit
Regime| Geostationary orbit
Longitude| 186° West
Transponders
Band| 38 (+10) transponders:
18 (+4) C-band
20 (+6) Ku-band
Coverage area| Asia-Pacific, West Coast of the United States

SES constellation

<- AMC-21

AMC-23 (formerly GE-23) is an American geostationary communications satellite that was launched by a Proton-M / Briz-M launch vehicle at 02:28:40 UTC on 29 December 2005. The 4,981 kg (10,981 lb) satellite to provide services to the Asia-Pacific, West Coast of the United States through separate beams to each region, after parking over the Pacific Ocean through its 18 (+4) C-band and 20 (+6) Ku-band transponders, over 186° West longitude.[2][3]

## Contents

* 1 GE-2i/AMC-13/Worldsat-3/AMC-23
* 2 GE-23
* 3 Eutelsat-172A
* 4 Eutelsat-174A
* 5 See also
* 6 References

## GE-2i/AMC-13/Worldsat-3/AMC-23

AMC-13 was originally ordered as GE-2i. In early 2004, AMC-13 was transferred to Worldsat LLC, a new subsidiary of SES Americom as Worldsat 3. The original AMC-13 was to feature 60 C-Band transponders, but when transferred to Worldsat, it was ordered to be changed to the hybrid C-/Ku-band payload with 18 C-band and 20 Ku-band transponders. In early 2005, it was renamed AMC-23.[1][3]

## GE-23

In 2007, the satellite was spun-off from SES Americom to GE-Satellite, when General Electric split off from SES. After this transaction, the satellite was renamed GE-23.[1]

## Eutelsat-172A

Eutelsat has announced in June 2012 the acquisition of GE-23 satellite from GE-Satellite. The satellite is renamed to Eutelsat 172A and expands Eutelsat coverage to Asia-Pacific region and West Coast of United States of America. The satellite had at that time an estimated lifespan of 8.5 years.[1][3]

## Eutelsat-174A

In 2017, after Eutelsat 172B had replaced it, Eutelsat 172A was moved to 174° East and renamed Eutelsat 174A.[1][3]

## See also

## References

1. ↑ 1.0 1.1 1.2 1.3 1.4 "AMC 23 → GE 23 → Eutelsat 172A → Eutelsat 174A". Gunter's Space Page. 21 July 2019. https://space.skyrocket.de/doc_sdat/amc-23.htm.
2. ↑ "Display: AMC 23 2005-052A". NASA. 10 February 2021. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=2005-052A. This article incorporates text from this source, which is in the public domain.
3. ↑ 3.0 3.1 3.2 3.3 "Home - Satellites". Satbeams. 6 April 2021. https://www.satbeams.com/satellites.

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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 (EchoStar 105)
* 12
* 14
* 15
* 16 (GovSat-1)
* Planned: SES-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
* Subsidiary: SES Astra

Third parties|

* Active: Ciel-2
* MonacoSAT
* QuetzSat 1
* Yahsat 1A

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