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Lista de centauros (pequeños cuerpos del Sistema Solar)

La siguiente es una lista de centauros , un grupo de cuerpos pequeños no resonantes del Sistema Solar cuya órbita alrededor del Sol se encuentra típicamente entre las órbitas de Júpiter y Neptuno (5 a 30  UA ). Los centauros son planetas menores con características de cometas , y a menudo se clasifican como tales. El grupo dinámico se forma debido al efecto erosivo de Neptuno en el cinturón de Kuiper por medio de dispersión gravitacional, enviando objetos hacia adentro para convertirse en centauros, o hacia afuera para convertirse en objetos de disco disperso , o eliminándolos del Sistema Solar por completo. Los propios centauros tienen órbitas inestables con vidas cortas, pasando de la población inactiva de objetos del cinturón de Kuiper al grupo activo de cometas de la familia de Júpiter en unos pocos millones de años. [1] [2]

Lista

La lista de centauros se ha elaborado a partir del archivo de datos MPCORB de MPC [3] basándose en los criterios definidos por el JPL-SBDB [ a] y se ha completado con objetos de la Lista de objetos transneptunianos conocidos [4] y de las Clasificaciones de objetos de la Encuesta de la eclíptica profunda [5] de William Johnston y Marc Buie , respectivamente. A fecha de abril de 2022 , esta tabla contiene 928 objetos . Una columna dedicada a cada una de estas fuentes indica si un objeto se considera un centauro ( ✓ ) o no ( ✗ ). [b] La tabla resalta los centauros rojos y grises con un color de fondo distinto (ver leyenda) . [2] [c]

Leyenda

  Centauro gris (52 objs.)   Centauro rojo (32 objs.)   Centauro sin índices de color (439 objs.)   Los centauros improbables aparecen en gris (405 objs.) [d]

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See also

Notes

  1. ^ a b The JPL Small-Body Database (SBDB), defines centaurs as "Objects with orbits between Jupiter and Neptune (5.5 au < a < 30.1 au)". Uranus and Neptune trojans are excluded if classified as such in the Johnston's Archive. A few unnumbered objects with a poorly determined obribt may be classified differently in the SBDB, as the orbital elements for this list are taken form the MPCORB data file directly. Chiron-type comets are only listed if included in the MPCORB data file.
  2. ^ Alternative classifications to centaur (CEN) include trans-Neptunian object (TNO), damocloid (DAM), unusual object (UMP), and resonant trans-Neptunian object, for example "3:2", for plutino). In addition, the classification of the Deep Ecliptic Survey divides centaurs into a R and S group (CENTAURR and CENTAURS).
  3. ^ An object's color ranges from BB to RR, split at a B–R magnitude of 1.45 into grey and red centaurs. Only for objects with a B–R color given in Johnston's Archive. Otherwise the table row is not highlighted.
  4. ^ A greyed-out table row contains an object with a perihelion (q, highlighted in red) that does not lie between the orbit of Jupiter and Neptune (5.1–30.1 AU), and is neither listed as centaur in Johnston's Archive nor in the Deep Ecliptic Survey classification (DES).
  5. ^ A bold designation links to an object's stand-alone article. In most other cases, a designation links to the corresponding entry in the list of minor planets or the list of unnumbered minor planets.
  6. ^ The discovery information is taken from MPC's List Of Centaurs and Scattered-Disk Objects or from a direct MPC Database Search.
  7. ^ An objects mean-diameter is given in kilometers and taken from Johnston's Archive. Otherwise, a calculated diameter is based on an estimated albedo of 0.09 and an absolute magnitude taken form the MPCORB data file.
  8. ^ The uncertainty parameter (U) indicates the quality of the current orbit determination (only displayed for unnumbered objects). In the Solar System Beyond Neptune classification (SSBN07) from 2007, an object is not a centaur, if it has a Jupiter tisserand (TJ) below 3.05 and a perihelion less than 7.35 AU. Additional physical properties such as the astronomical albedo, binary status, spectral type and B–R magnitude were taken from Johnston's archive.

References

  1. ^ a b Gladman, B.; Marsden, B. G.; Vanlaerhoven, C. (2008). "Nomenclature in the Outer Solar System" (PDF). The Solar System Beyond Neptune: 43. Bibcode:2008ssbn.book...43G.
  2. ^ a b c Tegler, S. C.; Romanishin, W.; Consolmagno, G. J. (December 2016). "Two Color Populations of Kuiper Belt and Centaur Objects and the Smaller Orbital Inclinations of Red Centaur Objects". The Astronomical Journal. 152 (6): 210. Bibcode:2016AJ....152..210T. doi:10.3847/0004-6256/152/6/210. ISSN 0004-6256.
  3. ^ a b "Data Available from the Minor Planet Center – MPCORB.DAT". Minor Planet Center. 4 April 2022.
  4. ^ a b Johnston, Wm. Robert (2 January 2022). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 19 April 2022.
  5. ^ a b Buie, Marc. "The Deep Ecliptic Survey Object Classifications". Southwest Research Institute. Retrieved 19 April 2022.
  6. ^ "List Of Centaurs and Scattered-Disk Objects". Minor Planet Center. 19 April 2022. Retrieved 19 April 2022.

External links