(342842) 2008 YB3

Centaur August 2021 yes (342842) 2008 YB 3 #C7FF8F Siding Spring Srvy. Siding Spring Obs. 18 December 2008 (342842) 2008 YB 3 centaurdamocloiddistant 1 July 2021 (JD 2459396.5) 1 11.78 yr (4,302 d) 16.698 AU 6.4673 AU 11.583 AU 0.4417 39.42 yr (14,399 d) 94.371° 0.0250 ms / day 105.06° 112.64° 330.44° -0.2460 67 km 0.062 n.a. BRB–I 1.750 0.01B–R 1.260 0.01R–I 0.490 0.01V–R 0.460 0.01 9.3 (342842) 2008 YB 3 is a sizable centaur and retrograde damocloid from the outer Solar System, approximately 67 km mi off 2 us in diameter. It was discovered on 18 December 2008, by astronomers with the Siding Spring Survey at the Siding Spring Observatory in Australia. The minor planet was numbered in 2012 and has since not been named. Orbit and classification 2008 YB 3 orbits the Sun at a distance of 6.5–16.7 AU once every 39 years and 5 months (14,399 days; semi-major axis of 11.58 AU). Its orbit has an eccentricity of 0.44 and an inclination of 105° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Siding Spring in December 2008. Retrograde centaur and damocloid 2008 YB 3 is a member of the centaurs, a population of inward-moving bodies transiting from the Kuiper belt to the group of Jupiter-family comets. Orbiting mainly between Jupiter and Neptune, they typically have a semi-major axis of 5.5 to 30.1 AU. Centaurs are cometary-like bodies with an eccentric orbit. Their short dynamical lifetime is due to the perturbing forces exerted on them by the outer planets of the Solar System. The object is on a retrograde orbit as it has an inclination of more than 90°. There are only about a hundred known retrograde minor planets out of nearly 800,000 observed bodies, and, together with 468861 2013 LU 28 and 2011 MM 4, it is among the largest such objects. The object also meets the orbital definition for being a damocloid. This is a small group of cometary-like objects without a coma or tail and a Tisserand's parameter with respect to Jupiter of less than 2 besides a retrograde orbit. Numbering and naming This minor planet was numbered by the Minor Planet Center on 29 October 2012, receiving the number 342842 342842 in the minor planet catalog (M.P.C. 80959). 2025, it has not been named. According to the established naming conventions, it will be named after one of the many centaurs from Greek mythology, which are creatures with the upper body of a human and the lower body and legs of a horse. Physical characteristics 2008 YB 3 has an intermediate BR color, in between the BB ("grey-blue") and RR ("very red") color classes. Sheppard's obtained color indices: B–I (1.750), B–R (1.260), R–I (0.490) and V–R (0.460) agree with most other centaurs.4 The resulting B–V index is 0.8 (subtracting V–R from B–R). Diameter and albedo According to the survey of centaurs and scattered-disc objects carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, 2008 YB 3 measures 67.1 km mi off 3 us in diameter and its surface has an albedo of 0.062, which makes it too small to be considered as a dwarf planet candidate. Rotation period 2021, no rotational lightcurve of has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown. See also List of centaurs (small Solar System bodies) 342842 References 30em 2017-10-29 last obs. JPL Small-Body Database Browser: 342842 (2008 YB3) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2342842 Jet Propulsion Laboratory 18 October 2018 342842 (2008 YB3) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=342842 18 October 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 18 October 2018 Naming of Astronomical Objects – Minor planets IAU – International Astronomical Union https://www.iau.org/public/themes/naming/#minorplanets 12 August 2021 31 October 2013 https://web.archive.org/web/20131031154417/https://www.iau.org/public/themes/naming/#minorplanets dead List of Known Trans-Neptunian Objects Johnston's Archive 7 October 2018 Johnston Wm. Robert http://www.johnstonsarchive.net/astro/tnoslist.html 12 August 2021 List Of Centaurs and Scattered-Disk Objects Minor Planet Center https://www.minorplanetcenter.net/iau/lists/t_centaurs.html 18 October 2018 C. de la Fuente Marcos R. de la Fuente Marcos August 2014 Large retrograde Centaurs: visitors from the Oort cloud? Astrophysics and Space Science 352 2 409–419(Ap&SSHomepage) 2014Ap&SS.352..409D 10.1007/s10509-014-1993-9 1406.1450 119255885 6 James M. Bauer Tommy Grav Erin Blauvelt A. K. Mainzer Joseph R. Masiero Rachel Stevenson Emily Kramer Yan R. Fernández C. M. Lisse Roc M. Cutri Paul R. Weissman John W. Dailey Frank J. Masci Russel Walker Adam Waszczak Carrie R. Nugent Karen J. Meech Andrew Lucas George Pearman Ashlee Wilkins Jessica Watkins Shrinivas Kulkarni Edward L. Wright WISE Team PTF Team August 2013 Centaurs and Scattered Disk Objects in the Thermal Infrared: Analysis of WISE/NEOWISE Observations The Astrophysical Journal 773 1 11 2013ApJ...773...22B 10.1088/0004-637X/773/1/22 1306.1862 51139703 Asteroid (342842) 2008 YB3 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=342842 18 October 2018 October 2026 InternetArchiveBot N. Peixinho A. Doressoundiram A. Delsanti H. Boehnhardt M. A. Barucci I. Belskaya October 2003 Reopening the TNOs color controversy: Centaurs bimodality and TNOs unimodality Astronomy and Astrophysics 410 3 L29–L32 2003A&A...410L..29P 10.1051/0004-6361:20031420 astro-ph/0309428 8515984 342842 18 October 2018 External links List Of Centaurs and Scattered-Disk Objects, Minor Planet Center 342842 2342842 342842 (342842) 2008 YB 3 342843 Davidbowie 342842 342842 342842 20081218 Category:Minor planets with a retrograde orbit