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In planetary astronomy, a centaur is a small Solar System body that orbits the Sun between Jupiter and Neptune and crosses the orbits of one or more of the giant planets. . Centaurs generally have unstable orbits because of this; almost all their orbits have dynamic lifetimes of only a few million years, [1] but there is one known centaur, 514107 Kaʻepaokaʻawela, which may be in a stable ...
The following is a list of centaurs, a group of non-resonant small Solar System bodies whose orbit around the Sun lie typically between the orbits of Jupiter and Neptune (5 to 30 AU). Centaurs are minor planets with characteristics of comets , and often classified as such.
The only Centaur-A launch on 8 May 1962 ended in an explosion 54 seconds after liftoff when insulation panels on the Centaur separated early, causing the LH 2 tank to overheat and rupture. This version was powered by two RL10A-1 engines. [47] After extensive redesigns, the only Centaur-B flight on 26 November 1963 was successful. This version ...
Many TNOs are often just assumed to have Pluto's density of 2.0 g/cm 3, but it is just as likely that they have a comet-like density of only 0.5 g/cm 3. [ 4 ] For example, if a TNO is incorrectly assumed to have a mass of 3.59 × 10 20 kg based on a radius of 350 km with a density of 2 g/cm 3 but is later discovered to have a radius of only 175 ...
Chariklo is currently the largest known centaur, with a volume-equivalent diameter of about 250 km. [10] Its shape is probably elongated, with dimensions of 287.6 × 270.4 × 198.2 km. [10] (523727) 2014 NW 65 is likely to be the second largest with 225 km (140 mi) and 2060 Chiron is likely to be the third largest with 220 km (140 mi). [8]
Centaur G-Prime was intended for deep space missions and was 9.0 meters (29.5 ft) long, allowing it to carry more propellant, but restricting the length of the payload to 9.3 meters (31 ft). The dry weight of the Centaur G-Prime was 2,761 kilograms (6,088 lb), and it weighed 22,800 kilograms (50,270 lb) fully loaded.
5145 Pholus / ˈ f oʊ l ə s / is an eccentric centaur in the outer Solar System, approximately 180 kilometers (110 miles) in diameter, that crosses the orbit of both Saturn and Neptune. It was discovered on 9 January 1992 by American astronomer David Rabinowitz (uncredited) of UA 's Spacewatch survey at the Kitt Peak National Observatory in ...
54598 Bienor / b aɪ ˈ iː n ɔːr / is a centaur that grazes the orbit of Uranus. It is named after the mythological centaur Bienor. Its closest approach to the Sun is 13.2 AU. [2] As of 2020, Bienor is 14.2 AU from the Sun [7] and will reach perihelion in January 2028. [2] It measured approximately 198 kilometers (120 miles) in diameter. [4]