# Lockheed Martin A2100

The A2100 is a model of communications satellite spacecraft made by Lockheed Martin Space Systems. It is used as the foundation for telecommunications payloads in geosynchronous orbit, as well as GOES-R weather satellites and GPS Block IIIA satellites. Over 40 satellites use the A2100 bus.

## History

The first satellite, AMC-1, was launched September 8, 1996, and has achieved 15-year on-orbit service life. Since 1996 there have been over 45 of the A2100 based satellites launched, with over 400 years of total on-orbit service. Other A2100 spacecraft include JCSAT-13 and VINASAT-2, which were launched May, 2012 on an Ariane 5 rocket, as well as Arabsat-6A and Hellas Sat 4/SaudiGeoSat-1 of Saudi Arabia's Arabsat-6G program.
In 2002, Lockheed Martin Commercial Space Systems was given a Frost and Sullivan Satellite Reliability Award for excellence in the production of flexible and reliable communications satellites used in geosynchronous Earth orbit.
A2100 customers includes communications companies around the world, including Astra, Telesat, SKY Perfect JSAT Group and others.

## Design

The Lockheed Martin A2100 geosynchronous spacecraft series is designed for a variety of telecommunications needs including K$_a$ band broadband and broadcast services, fixed satellite services in C-band and K$_u$ band payload configurations, high-power direct broadcast services using the K$_u$ band frequency spectrum, and mobile satellite services using UHF, L-band and S-band payloads.
The A2100 satellite system was developed by the Astro Space team at its East Windsor, New Jersey facility, with team members delivering a flexible common bus with fewer components, lower spacecraft weight, and reduced customer delivery time.
The A2100 is being supplanted by the LM2100, an evolutionary upgrade with several new features. The military version is the LM2100 Combat Bus.

### Propulsion system

The attitude control system includes reaction wheels, with momentum desaturation and main motor maneuver attitude control propulsion provided by small monopropellant hydrazine motors. This hydrazine supply is contained in a central propellant tank of 0.90 m diameter and up to 2.00 m length depending on the customer's requirements. This tank's maximum length was later increased to 2.55 m. The liquid apogee engine uses hydrazine fuel from the central tank along with nitrogen tetroxide oxidizer from two flanking tanks of 0.54 m diameter and up to 1.65 m long. Orbit maintenance is performed by the small hydrazine motors and ion thrusters. The maximum propellant supply (with the largest tanks at 95% fill factor) are 1368 kg of hydrazine fuel and 627 kg of nitrogen tetroxide oxidizer.
According to Moog-ISP, the A2100 platform uses its LEROS bipropellant Liquid Apogee Engine.

## Satellite orders
### A2100A

| Satellite | Country | Operator | Type | Coverage | Launch date (UTC) | Rocket | Changes | Status |
| GE-1 | United States | SES Americom | Television broadcasting | 24 C-band, 24 Ku-band | 8 September 1996 | Atlas IIA | Known as AMC 1 | Active |
| GE-2 | United States | SES Americom | Television broadcasting | 24 C-band, 24 Ku-band | 30 January 1997 | Ariane-44L | Known as AMC 2 | Retired |
| GE-3 | United States | SES Americom | Television broadcasting | 24 C-band, 24 Ku-band | 4 September 1997 | Atlas IIAS | Known as Eagle 1 | Active |
| GE-7 | United States | SES Americom | Television broadcasting | 24 C-band | 14 September 2000 | Ariane 5G | Known as AMC 7 | Retired |
| GE-8 | United States | SES Americom | Television broadcasting | 24 C-band | 20 December 2000 | Ariane 5G | Known as AMC 8 (Aurora 3) | Active |
| GE-10 | United States | SES Americom | Television broadcasting | 24 C-band | 5 February 2004 | Atlas IIAS | | Retired |
| GE-11 | United States | SES Americom | Television broadcasting | 24 C-band | 19 May 2004 | Atlas IIAS | | Active |
| GE-18 | United States | SES Americom | Television broadcasting | 24 C-band | 19 May 2004 | Ariane 5 ECA | | Active |
| BSAT-3a | Japan | BSAT Corp | Television broadcasting | 12 Ku-band | 14 August 2007 | Ariane 5 ECA | | Active |
| BSAT-3b | Japan | BSAT Corp | Television broadcasting | 12 Ku-band | 28 October 2010 | Ariane 5 ECA | | Active |
| BSAT-3c | Japan | BSAT Corp | Television broadcasting | 24 Ku-band | 6 August 2011 | Ariane 5 ECA | | Active |
| GOES-R | United States | NOAA | Meteorology | | 19 November 2016 | Atlas V 541 | Known as GOES 16 | Active |
| GOES-S | United States | NOAA | Meteorology | | 1 March 2018 | Atlas V 541 | Known as GOES 17 | Active |
| GOES-T | United States | NOAA | Meteorology | | 1 March 2022 | Atlas V 541 | Known as GOES 18 | Active |
| GOES-U | United States | NOAA | Meteorology | | 25 June 2024 | Falcon Heavy | Known as GOES 19 | Active |
| ABS-7 | Bermuda | ABS | Television broadcasting | 24 Ku-band, 6 Ka-band | 4 September 1999 | Ariane-42P | Known as ABS 7 | Inclined |
| Nemesis 1 | United States | National Reconnaissance Office | SIGINT, COMINT | | 8 September 2009 | Atlas V 401 | Known as PAN, PAN360, USA 207 | Active |
| Nemesis 2 | United States | National Reconnaissance Office | SIGINT, COMINT | | 17 September 2014 | Atlas V 401 | Known as CLIO, USA 257 | Active |
| Telkom 1 | Indonesia | Telkom Indonesia | Communications | 24 C-band | 12 August 1999 | Ariane-42P | | Retired |
| Vinasat-1 | Vietnam | VNPT | Communications | 8 C-band, 12 Ku-band | 18 April 2008 | Ariane 5 ECA | | Active |
| Vinasat-2 | Vietnam | VNPT | Communications | 24 Ku-band | 15 May 2012 | Ariane 5 ECA | | Active |
| Zhongwei 1 | China | China Satcom | Communications | 18 C-band, 20 Ku-band | 30 May 1998 | Long March 3B | Known as APStar 9A | Retired |

### A2100AX

| Satellite | Country | Operator | Type | Coverage | Launch date (UTC) | Rocket | Changes | Status |
| EchoStar 3 | United States | EchoStar | Television broadcasting | 32 Ku-band | 5 October 1997 | Atlas IIAS | | Retired |
| EchoStar 4 | United States | EchoStar | Television broadcasting | 32 Ku-band | 7 May 1998 | Proton-K Blok-DM3 | | Retired |
| EchoStar 7 | United States | EchoStar | Television broadcasting | 32 Ku-band | 7 May 1998 | Atlas IIIB-DEC | | Retired |
| GE 1A | United States | SES Americom | Communications | 28 Ku-band | 1 October 2000 | Proton-K Blok-DM3 | Known as NSS 11 | Active |
| GE 4 | United States | SES Americom | Television broadcasting & satellite internet | 24 C-band, 24 Ku-band | 13 November 1999 | Ariane-44LP | Known as AMC 4 | Active |
| GE 6 | United States | SES Americom | Television broadcasting & satellite internet | 24 C-band, 24 Ku-band | 21 October 2000 | Proton-K Blok-DM3 | Known as AMC 6 (Rainbow 2) | Active |
| LMI 1 | Bermuda | ABS | Television broadcasting & satellite internet | 28 C-band, 16 Ku-band | 26 September 1999 | Proton-K Blok-DM3 | Known as ABS 6 | Active |
| Nimiq 1 | Canada | Telesat | Satellite internet | 32 Ku-band | 20 May 1999 | Proton-K Blok-DM3 | | Active |
| Nimiq 2 | Canada | Telesat | Satellite internet | 32 Ku-band | 29 December 2002 | Proton-M | | Active |
| N-SAT 110 | Japan | SKY Perfect JSAT | Satellite internet | 24 Ku-band | 6 October 2000 | Ariane-42L | Known as Superbird 5 | Retired |

### A2100AXS

| Satellite | Country | Operator | Type | Coverage | Launch date (UTC) | Rocket | Changes | Status |
| AMC-14 | United States | SES Americom | Television broadcasting | 32 Ku-band | 14 March 2008 | Proton-M Phase 1 | | Active |
| AMC-15 | United States | SES Americom | Television broadcasting | 24 Ku-band, 12 Ka-band | 14 October 2004 | Proton-M Phase 1 | | Active |
| AMC-16 | United States | SES Americom | Television broadcasting | 24 Ku-band, 12 Ka-band | 14 October 2004 | Proton-M Phase 1 | | Retired |
| Astra 1KR | Luxembourg | SES | Television broadcasting | 32 Ku-band | 20 April 2006 | Atlas V 431 | | Active |
| Astra 1L | Luxembourg | SES | Television broadcasting | 29 Ku-band, 2 Ka-band | 4 May 2007 | Ariane 5 ECA | | Active |
| EchoStar 10 | United States | EchoStar | Television broadcasting | 42 Ku-band | 15 February 2006 | Zenit-3SL | | Active |
| JCSat 9 | Japan | SKY Perfect JSAT | Communications | 20 C-band, 20 Ku-band, 1 S-band | 12 April 2006 | Zenit-3SL | Known as JCSat 5A | Active |
| JCSat 10 | Japan | SKY Perfect JSAT | Communications | 12 C-band, 30 Ku-band | 11 August 2006 | Ariane 5 ECA | Known as JCSat 3A | Active |
| JCSAT-11 | Japan | SKY Perfect JSAT | Communications | 12 C-band, 30 Ku-band | 5 September 2007 | Proton-M Phase 1 | | Launch failure |
| JCSat 12 | Japan | SKY Perfect JSAT | Communications | 12 C-band, 30 Ku-band | 21 August 2008 | Ariane 5 ECA | Known as JCSat RA | Active |
| JCSat 13 | Japan | SKY Perfect JSAT | Communications | 44 Ku-band | 15 May 2012 | Ariane 5 ECA | Known as JCSat 4B | Active |
| NSS-6 | Netherlands | SES | Satellite internet | 50 Ku-band | 17 December 2002 | Ariane 44L | | Active |
| NSS-7 | Netherlands | SES | Satellite internet | 36 C-band, 36 Ku-band | 16 April 2002 | Ariane 44L | | Retired |
| Rainbow-1 | United States | EchoStar | Television broadcasting | 36 Ku-band | 17 July 2003 | Atlas V 521 | Known as EchoStar 12 | Retired |
| Sirius 4 (Astra 4A) | Sweden | SES Sirius | Communications | 52 Ku-band, 2 Ka-band | 17 November 2007 | Proton-M Phase 1 | | Active |
| Garuda 1 | Indonesia | Asoa Cellular Satellite | Mobile communications | 88 L-band | 12 February 2000 | Proton-K Blok-DM3 | | Active |

### A2100M (Military)

| Satellite | Country | Operator | Type | Coverage | Launch date (UTC) | Rocket | Changes | Status |
| AEHF 1 | United States | Air Force Space Command | Military communications | | 14 August 2010 | Atlas V 531 | Known as USA 214 | Active |
| AEHF 2 | United States | Air Force Space Command | Military communications | | 4 May 2012 | Atlas V 531 | Known as USA 235 | Active |
| AEHF 3 | United States | Air Force Space Command | Military communications | | 18 September 2013 | Atlas V 531 | Known as USA 246 | Active |
| AEHF 4 | United States | Air Force Space Command | Military communications | | 17 October 2018 | Atlas V 551 | Known as USA 288 | Active |
| AEHF 5 | United States | Air Force Space Command | Military communications | | 8 August 2019 | Atlas V 551 | Known as USA 292 | Active |
| AEHF 6 | United States | Air Force Space Command | Military communications | | 26 March 2020 | Atlas V 551 | Known as USA 298 | Active |
| MUOS 1 | United States | United States Navy | Military communications | | 24 February 2012 | Atlas V 551 | | Active |
| MUOS 2 | United States | United States Navy | Military communications | | 19 July 2013 | Atlas V 551 | | Active |
| MUOS 3 | United States | United States Navy | Military communications | | 21 January 2015 | Atlas V 551 | | Active |
| MUOS 4 | United States | United States Navy | Military communications | | 2 September 2015 | Atlas V 551 | | Active |
| MUOS 5 | United States | United States Navy | Military communications | | 24 June 2016 | Atlas V 551 | | Active |
| GPS-3 1 | United States | Air Force Space Command | Navigation | | 23 December 2016 | Falcon 9 | Known as Navstar 77, USA 289, Vespucci | Active |
| GPS-3 2 | United States | Air Force Space Command | Navigation | | 22 August 2019 | Delta IV M+ (4,2) | Known as Navstar 78, USA 293, Magellan | Active |
| GPS-3 3 | United States | Air Force Space Command | Navigation | | 30 June 2020 | Falcon 9 | Known as Navstar 79, USA 304, Columbus | Active |
| GPS-3 4 | United States | Air Force Space Command | Navigation | | 5 November 2020 | Falcon 9 | Known as Navstar 80, USA 309, Sacagawea | Active |
| GPS-3 5 | United States | Air Force Space Command | Navigation | | 17 June 2021 | Falcon 9 | Known as Navstar 81, USA 320, Neil Armstrong | Active |
| GPS-3 6 | United States | Air Force Space Command | Navigation | | 18 January 2023 | Falcon 9 | Known as Navstar 82, USA 343, Amelia Earhart | Active |
| GPS-3 7 | United States | Air Force Space Command | Navigation | | 2024 | Vulcan Centaur | | Awaiting launch |
| GPS-3 8 | United States | Air Force Space Command | Navigation | | 202x | Vulcan Centaur | | Awaiting launch |
| GPS-3 9 | United States | Air Force Space Command | Navigation | | 202x | Vulcan Centaur | | Awaiting launch |
| GPS-3 10 | United States | Air Force Space Command | Navigation | | 202x | Falcon 9 | | Awaiting launch |
| SBIRS GEO 1 | United States | Air Force Space Command | Early warning | 2 SBIRS sensors | 7 May 2011 | Atlas V 401 | Known as USA 230 | Active |
| SBIRS GEO 2 | United States | Air Force Space Command | Early warning | 2 SBIRS sensors | 19 March 2013 | Atlas V 401 | Known as USA 241 | Active |
| SBIRS GEO 3 | United States | Air Force Space Command | Early warning | 2 SBIRS sensors | 21 January 2017 | Atlas V 401 | Known as USA 273 | Active |
| SBIRS GEO 4 | United States | Air Force Space Command | Early warning | 2 SBIRS sensors | 20 January 2018 | Atlas V 411 | Known as USA 282 | Active |

### LM2100 (Modernized)

| Satellite | Country | Operator | Type | Coverage | Launch date (UTC) | Rocket | Status |
| Arabsat-6A | Saudi Arabia | Arabsat | Communications | | 11 April 2019 | Falcon Heavy | Active |
| SaudiGeoSat-1/HellasSat-4 | Saudi Arabia, Greece | Arabsat, Hellas Sat | Communications | Ku-band, Ka-band | 5 February 2019 | Ariane 5 ECA | Active |
| JCSAT-17 | Japan | SKY Perfect JSAT | Mobile communications | S-band | 18 February 2020 | Ariane 5 ECA | Active |

### LM2100M (Modernized Military)

| Satellite | Country | Operator | Type | Coverage | Launch date (UTC) | Rocket | Changes | Status |
| NG-OPIR-GEO 1 | United States | Air Force Space Command | Early warning | 2 NG-OPIR sensors | 2025 | Vulcan Centaur | | Awaiting launch |
| NG-OPIR-GEO 2 | United States | Air Force Space Command | Early warning | 2 NG-OPIR sensors | 202x | | | Awaiting launch |
| NG-OPIR-GEO 3 | United States | Air Force Space Command | Early warning | 2 NG-OPIR sensors | 202x | | | Awaiting launch |
| GPS-3F 1 | United States | Air Force Space Command | Navigation | | 2026 | Falcon Heavy | | Awaiting launch |
| GPS-3F 2 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 3 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 4 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 5 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 6 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 7 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 8 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 9 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 10 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 11 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 12 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 13 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 14 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 15 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 16 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 17 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 18 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 19 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 20 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 21 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| GPS-3F 22 | United States | Air Force Space Command | Navigation | | 202x | | | Awaiting launch |
| SBIRS GEO 5 | United States | Air Force Space Command | Early warning | 2 SBIRS sensors | 18 May 2021 | Atlas V 421 | Known as USA 315 | Active |
| SBIRS GEO 6 | United States | Air Force Space Command | Early warning | 2 SBIRS sensors | 4 August 2022 | Atlas V 421 | | Active |

## Cancelled orders

| Satellite | Country | Operator | Type | Coverage |
| GE-9 | United States | SES Americom | Television broadcasting | 24 C-band |
| Jabiru 1 | Australia | NewSat Corporation | Communications | 50 Ka-band, 18 Ku-band, 1 S-band |
| Rainbow KA-1 | United States | Cablevision | Television broadcasting | Ka-band |
| Rainbow KA-2 | United States | Cablevision | Television broadcasting | Ka-band |
| Rainbow KA-3 | United States | Cablevision | Television broadcasting | Ka-band |
| Rainbow KA-4 | United States | Cablevision | Television broadcasting | Ka-band |
| Rainbow KA-5 | United States | Cablevision | Television broadcasting | Ka-band |
| Agrani 1 | India | Agrani | Mobile communications | |
| Garuda 2 | Indonesia | Asia Cellular Satellite | Mobile communications | 88 L-band |
| Astrolink 1 | United States | Astrolink | Mobile communications | Ka-band |
| Astrolink 2 | United States | Astrolink | Mobile communications | Ka-band |
| Astrolink 3 | United States | Astrolink | Mobile communications | Ka-band |
| Astrolink 4 | United States | Astrolink | Mobile communications | Ka-band |
| SBIRS GEO 7 | United States | Air Force Space Command | Early warning | 2 SBIRS sensors |
| SBIRS GEO 8 | United States | Air Force Space Command | Early warning | 2 SBIRS sensors |