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Atlas V 551

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Status: Active. First Launch: 2006-01-19. Last Launch: 2018-10-17. Number: 9 . Payload: 20,520 kg (45,230 lb). Thrust: 10,632.00 kN (2,390,168 lbf). Gross mass: 587,000 kg (1,294,000 lb). Height: 65.50 m (214.80 ft). Diameter: 3.81 m (12.49 ft). Span: 6.91 m (22.67 ft).

• New Horizons - . Mass: 478 kg (1,053 lb). Nation: USA. Agency: JPL, NASA. Manufacturer: APL. Class: Outer planets. Type: Outer planets probe. Spacecraft: New Horizons. USAF Sat Cat: 28928 . COSPAR: 2006-001A.

  Last robotic mission to an unexplored planet in our solar system. New Horizons was due to receive a gravity boost from Jupiter in February 2007, then fly by Pluto in 2015. During launch toward Jupiter it reached a higher velocity than any manmade object, and was the first to be boosted directly to solar escape velocity. The trajectory had a perihelion of 0.98 AU, an inclination of 0.87 deg and an eccentricity of 1.03. After the Jupiter encounter it was to have a perihelion of 2.2 AU, an inclination of 2.3 deg and an eccentricity of 1.40. At encounter with Pluto on July 14, 2015, the spacecraft would be 1.1 AU above the ecliptic plane and 32.9 AU from the Sun, leaving the solar system toward the star Xi Sgr.

• Juno - . Mass: 3,625 kg (7,991 lb). Nation: USA. Class: Outer planets. Type: Outer planets probe. Spacecraft: Juno. USAF Sat Cat: 37773 . COSPAR: 2011-040A.

  Jupiter Near-polar Orbiter, accelerated by the AV-029 Centaur to a hyperbolic escape orbit at 17:15 GMT into a 1.0 AU x 2.26 AU x 0.1 deg solar orbit. A 500-km flyby of Earth on 9 October 2013 pumped this orbit towards Jupiter. It is planned to enter Jovian orbit in July 2016, and be commaned to bun up in Jupiter's atmosphere in October 2017. Payloads included magnetometers, plasma and particle instruments, UV auroral imagers and spectrometers, and the JunoCam imager. The probe has a massmof 1593 kg and carries a further 2032 kg of propellant. Its three large solar arrays span around 22 meters; it is the first spacecraft to fly to the outer solar system without radioisotope power sources.

• MUOS 1 - . Payload: A2100M. Mass: 6,740 kg (14,850 lb). Nation: USA. Class: Communications. Type: Communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 38093 . COSPAR: 2012-009A. Apogee: 35,802 km (22,246 mi). Perigee: 35,771 km (22,227 mi). Inclination: 5.00 deg. Period: 1,436.10 min. US Navy's first Mobile User Objective System launch, providing military UHF communications services. Launch mass 6740 kg; dry mass 3812 kg..

• MUOS 2 - . Payload: A2100M. Mass: 6,700 kg (14,700 lb). Nation: USA. Class: Communications. Type: Communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 39206 . COSPAR: 2013-036A. Apogee: 35,822 km (22,258 mi). Perigee: 7,847 km (4,875 mi). Inclination: 14.60 deg. Period: 786.00 min. Mobile User Objective System; provides UHF communications links for the US Navy. 3800 kg dry mass..

• MUOS 3 - . Payload: A2100M. Mass: 6,740 kg (14,850 lb). Nation: USA. Class: Communications. Type: Communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 40374 . COSPAR: 2015-002A. Apogee: 35,788 km (22,237 mi). Perigee: 5,592 km (3,474 mi). Inclination: 16.70 deg. US Navy communications satellite..

• MUOS 4 - . Payload: A2100M. Mass: 6,700 kg (14,700 lb). Nation: USA. Class: Communications. Type: Communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 40887 . COSPAR: 2015-044A. Apogee: 35,786 km (22,236 mi). Perigee: 3,802 km (2,362 mi). Inclination: 19.10 deg.

  MUOS (Multiple User Objective System), US Navy UHF-band communications satellite,was launched into a geotransfer orbit. The Centaur upper stage made three burns, to 167 km x 630 km, 194 km x 34,447 km, and 3,802 km x 35,786 km orbits, before releasing the satellite. The satellite used its BT-4 liquid engine to raise its orbit to geosynchronous altitue.

• MUOS 5 - . Nation: USA. Class: Communications. Type: Communications satellite. Spacecraft: AS 2100. USAF Sat Cat: 41622 . COSPAR: 2016-041A. Apogee: 35,670 km (22,160 mi). Perigee: 3,880 km (2,410 mi). Inclination: 19.10 deg.

  US Navy Multiple User Object System's Space Vehicle 3 was launched as MUOS 5. The Atlas 5 rocket made three burns to 167 x 659 km x 28 deg, 191 x 32930 x 26 deg and then 3802 x 35786 km x 19 deg, and deployed MUOS which will use its Japanese BT-4 thruster to reach GEO over the Indian Ocean as an in-orbit spare for the system, whose 4 operational satellites were over the Atlantic, the Pacific, the Indian Ocean and the Americas. MUOS 5 had problems with its propulsion system and was parked in a 15242 x 35703 km x 9.8 deg intermediate geotransfer orbit.

• USA 283 - . Payload: CBAS SATCOM. Nation: USA. USAF Sat Cat: 43339 . COSPAR: 2018-036A. See CBAS (USA 283, AFSPC 11). ..

• USA 284 - . Payload: EAGLE 1. Nation: USA. USAF Sat Cat: 43340 . COSPAR: 2018-036B. See EAGLE (USA 284). ..

• USA 285 - . Payload: MYCROFT. Nation: USA. USAF Sat Cat: 43445 . COSPAR: 2018-036E. See Mycroft (USA 285 ?). ..

• USA 286 - . Payload: ESPASat 2. Nation: USA. USAF Sat Cat: 43446 . COSPAR: 2018-036F. See USA 286. ..

• USA 287 - . Payload: ESPASat 3. Nation: USA. USAF Sat Cat: 43465 . COSPAR: 2018-036G. See USA 287. ..

• USA 288 - . Payload: AEHF SV-4; AEHF 4 (USA 288). Nation: USA. USAF Sat Cat: 43651 . COSPAR: 2018-079A. Apogee: 36,426 km (22,634 mi). Perigee: 33,735 km (20,961 mi). Inclination: 5.12 deg. Period: 1,400.18 min. See AEHF 4 (USA 288). ..