AMC-23

AMC-23
Names	GE-2i; Worldsat-3; AMC-13; GE-23; Eutelsat-172A; Eutelsat-174A
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, 10 months, 1 day (elapsed)
Spacecraft properties
Spacecraft	GE-23
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.

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.

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.

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.

Eutelsat-174A

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

References

1 2 3 4 5 "AMC 23 → GE 23 → Eutelsat 172A → Eutelsat 174A". Gunter's Space Page. 21 July 2019. Retrieved 6 April 2021.
↑ "Display: AMC 23 2005-052A". NASA. 10 February 2021. Retrieved 6 April 2021. This article incorporates text from this source, which is in the public domain.
1 2 3 4 "Home - Satellites". Satbeams. 6 April 2021. Retrieved 6 April 2021.

[Gunter-1] 1 2 3 4 5 "AMC 23 → GE 23 → Eutelsat 172A → Eutelsat 174A". Gunter's Space Page. 21 July 2019. Retrieved 6 April 2021.

[Display-2] "Display: AMC 23 2005-052A". NASA. 10 February 2021. Retrieved 6 April 2021. This article incorporates text from this source, which is in the public domain.

[Satbeams-3] 1 2 3 4 "Home - Satellites". Satbeams. 6 April 2021. Retrieved 6 April 2021.

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 24 (Astra 1P)
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 1P (SES-24) 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

v t e ← 2004 Orbital launches in 2005 2006 →
January	Deep Impact Kosmos 2414, Universitetsky-Tatyana
February	AMC-12 USA-181 XTAR-EUR, Maqsat-B2 (Sloshsat-FLEVO) Himawari 6 Progress M-52 (TNS-0)
March	XM-3 Inmarsat-4 F1 Ekspress AM-2
April	USA-165 Apstar 6 Soyuz TMA-6 DART Spaceway 1 USA-182
May	Cartosat-1, HAMSAT NOAA-18 DirecTV-8 Foton-M No.2
June	Progress-M 53 Molniya-3K No.12 Cosmos 1 Intelsat Americas 8 Ekspress AM-3
July	Shijian 7 Suzaku STS-114 (Raffaello MPLM)
August	FSW-4 2 Thaicom 4 MRO Kirari, Reimei Monitor-E FSW-3 3
September	Kosmos 2415 Progress-M 54 (RadioSkaf) Anik F1R USA-183 USA-185
October	Soyuz TMA-7 CryoSat Shenzhou 6 Syracuse 3A, Galaxy 15 USA-186 Beijing-1, TopSat, Sina-1, SSETI Express (CubeSat Xi-V, UWE-1, nCUBE-2), Mozhaets-5, Rubin-5
November	Inmarsat-4 F2 Venus Express Spaceway-2, Telkom-2
December	Progress-M 55 Gonets-M No.1, Kosmos 2416 Meteosat 9, INSAT-4A Kosmos 2417, Kosmos 2418, Kosmos 2419 GIOVE-A AMC-23
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).

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

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, 10 months, 1 day (elapsed)


Spacecraft	GE-23
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