(469306) 1999 CD158

Trans-Neptunian object (TNO) July 2021 yes (469306) 1999 CD 158 #C2E0FF J. X. LuuD. C. JewittC. Trujillo Mauna Kea Obs. 10 February 1999 (469306) 1999 CD 158 TNOres 4:7?distantdetached 4 September 2017 (JD 2458000.5) 3 16.18 yr (5,908 days) 50.139 AU 37.410 AU ≈ 17 February 2107JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)±3 days 43.775 AU 0.1454 289.63 yr (105,787 days) 250.48° 0.0034 ms / day 25.486° 119.03° 143.51° 0 310 km < 6.88 0.02 h >0.13 IRCB–V 0.7700.8300.8640.860V–R 0.6300.5100.5200.520V–I 1.1101.0921.100 21.8 4.837 0.111 (R)5.28 (469306) 1999 CD 158 is a resonant trans-Neptunian object from the circumstellar disc of the Kuiper belt, located in the outermost region of the Solar System. It measures approximately 310 km mi off us 2 in diameter. It was discovered on 10 February 1999, by American astronomers Jane Luu, David Jewitt, and Chad Trujillo at Mauna Kea Observatories on the Big Island of Hawaii, United States. Orbit and classification 1999 CD 158 is a candidate member of the Haumea family, the only collisional group of trans-Neptunian objects currently determined. It is also sub-classified as a resonant trans-Neptunian object, as it stays in a 4:7 orbital resonance with the ice giant Neptune, which means, that for every seven orbits of Neptune around the Sun, it makes four orbits. It orbits the Sun at a distance of 37.4–50.1 AU once every 289 years and 8 months (105,787 days). Its orbit has an eccentricity of 0.15 and an inclination of 25° with respect to the ecliptic. Its observation arc begins with its official discovery observation at Mauna Kea in 1999, as no precovery images were taken and no prior identifications were made. As of 2017 its current position is at 46.7 AU from the Sun. Physical characteristics Photometry Photometric observation of 1999 CD 158 in March 2015, gave a classically shaped bimodal lightcurve with a rotation period of 6.88 hours and a large brightness variation of 0.49 magnitude (U=3-). Observations with the New Technology Telescope at ESO's La Silla Observatory in Chile in 2008, determined the body's BVRI colors to be 0.770 (B–V), 0.630 (V–R), and 1.110 (V–I) for their respective passbands. Color indices have since been repeatedly measured. Diameter Analysis of data from the Herschel Space Telescope suggests that 1999 CD 158 measures at most 310 kilometers in diameter. Naming As of 2025, this minor planet remains unnamed. References 30em 2015-04-15 last obs. JPL Small-Body Database Browser: 469306 (1999 CD158) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2469306 Jet Propulsion Laboratory 2 June 2017 469306 (1999 CD158) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=469306 16 March 2017 Marc W. Buie 2012-02-04 Orbit Fit and Astrometric record for 99CD158 SwRI (Space Science Department) http://www.boulder.swri.edu/~buie/kbo/astrom/99CD158.html 2012-02-04 https://web.archive.org/web/20160616183206/http://www.boulder.swri.edu/~buie/kbo/astrom/99CD158.html 2016-06-16 dead List of known trans-Neptunian objects Johnstonsarchive.net 18 August 2020 http://www.johnstonsarchive.net/astro/tnoslist.html 19 July 2021 AstDys Summary for 1999 CD158, retrieved 2012-02-04 AstDys Ephmerides for 1999 CD158, retrieved 2012-02-04 469306 16 March 2017 Audrey Thirouin Scott S. Sheppard Keith S. Noll Nicholas A. Moskovitz Jose Luis Ortiz Alain Doressoundiram June 2016 Rotational Properties of the Haumea Family Members and Candidates: Short-term Variability. The Astronomical Journal 151 6 20 2016AJ....151..148T 10.3847/0004-6256/151/6/148 1603.04406 free N. Peixinho A. Delsanti A. Guilbert-Lepoutre R. Gafeira P. Lacerda October 2012 The bimodal colors of Centaurs and small Kuiper belt objects http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A..86P Astronomy and Astrophysics 546 12 2012A&A...546A..86P 10.1051/0004-6361/201219057 free 1206.3153 263789035 16 March 2017 Irina N. Belskaya Maria A. Barucci Marcello Fulchignoni Anatolij N. Dovgopol April 2015 Updated taxonomy of trans-neptunian objects and centaurs: Influence of albedo http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..250..482B Icarus 250 482–491 2015Icar..250..482B 10.1016/j.icarus.2014.12.004 16 March 2017 C. Snodgrass B. Carry C. Dumas O. Hainaut February 2010 Characterisation of candidate members of (136108) Haumea's family http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2010A&A...511A..72S Astronomy and Astrophysics 511 9 2010A&A...511A..72S 10.1051/0004-6361/200913031 free 0912.3171 16 March 2017 B. Carry C. Snodgrass P. Lacerda O. Hainaut C. Dumas August 2012 Characterisation of candidate members of (136108) Haumea's family. II. Follow-up observations http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...544A.137C Astronomy and Astrophysics 544 7 2012A&A...544A.137C 10.1051/0004-6361/201219044 free 1207.6491 62880843 16 March 2017 O. R. Hainaut H. Boehnhardt S. Protopapa October 2012 Colours of minor bodies in the outer solar system. II. A statistical analysis revisited http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...546A.115H Astronomy and Astrophysics 546 20 2012A&A...546A.115H 10.1051/0004-6361/201219566 free 1209.1896 54776793 16 March 2017 etal E. Vilenius D. Stansberry T. Müller, T. M. Mueller C. Kiss P. Santos-Sanz "TNOs are Cool": A survey of the trans-Neptunian region. XIV. Size/albedo characterization of the Haumea family observed with Herschel and Spitzer Astronomy & Astrophysics October 2018 618 A136 A136 free 10.1051/0004-6361/201732564 1904.06333 2018A&A...618A.136V External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Discovery Circumstances: Numbered Minor Planets (465001)-(470000) – Minor Planet Center 469306 469306 (469306) 1999 CD 158 469306 Category:Discoveries by Chad Trujillo Category:Discoveries by Jane Luu Category:Discoveries by David C. Jewitt 19990210