(668643) 2012 DR30

Trans-Neptunian object and centaur November 2018 yes (668643) 2012 DR 30 #C2E0FF 2012 DR30 SDSS precovery.png 2012 DR 30 in a precovery image taken by the Sloan Digital Sky Survey in 2000 (668643) 2012 DR 30 2009 FW 54 PMO NEO Survey Program Purple Mountain Obs. 6 February 2008 TNO centaur damocloid distant 27 April 2019 (JD 2458600.5) 1 14.72 yr (5,375 d) 3192 AU2049 AU (barycentric) 14.5 AU ≈ 16 March 2011JPL Horizons https://web.archive.org/web/20201128113216/https://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2012DR30 28 November 2020 Observer Location: @sun 1603.44 AU1032 AU (barycentric) 0.9909 64207 yr33100 yr (barycentric) 0.0453° 0.0000 ms / day 77.986° 341.48° 195.57° 0.9860 9.311 AU 5.45 AU 3.32 AU 185 km 188 km 0.076 0.08 (approx.) Prominent water (H 2 O/"bowl" type)6 BR–IR B–R 1.21 19.9 7.1 (668643) 2012 DR 30 is a trans-Neptunian object and centaur with an extremely eccentric orbit that brings it from the inner Oort cloud, the outermost region of the Solar System. It was discovered on 6 February 2008 by astronomers at Purple Mountain Observatory in Nanking, China. It measures approximately 188 km mi off 2 us in diameter. Description Using an epoch of February 2017, it has the second-largest heliocentric semi-major axis of a minor planet not detected outgassing like a comet. (2014 FE 72 has a larger heliocentric semi-major axis.) 2012 DR 30 does have a barycentric semi-major axis of 1032 AU.Given the orbital eccentricity of this object, different epochs can generate quite different heliocentric unperturbed two-body best-fit solutions to the semi-major axis and orbital period. For objects at such high eccentricity, the Sun's barycenter is more stable than heliocentric coordinates. Using JPL Horizons, the barycentric semi-major axis is approximately 1032 AU. footnoteA lower-alpha For the epoch of July 2018 2012 DR 30 will have its largest heliocentric semi-major axis of 1644 AU. Orbital evolution Year(epoch) BarycentricAphelion (Q)(AU) Orbitalperiodyears 1950 2000 32000 2050 2049 33100 2012 DR 30 passed 5.7 AU from Saturn in February 2009 and came to perihelion in March 2011 at a distance of 14.5 AU from the Sun (inside the orbit of Uranus). In 2018, it will move from 18.2 AU to 19.1 AU from the Sun. It comes to opposition in late March. With an absolute magnitude (H) of 7.1, the object has a published diameter of 185 and 188 kilometers, respectively. With an observation arc of 14.7 years, it has a well constrained orbit. It will not be 50 AU from the Sun until 2047. After leaving the planetary region of the Solar System, 2012 DR 30 will have a barycentric aphelion of 2049 AU with an orbital period of 33100 years. In a 10 million year integration of the orbit, the nominal (best-fit) orbit and both 3-sigma clones remain outside 12.2 AU (qmin) from the Sun. Summary of barycentric orbital parameters are: Semi-major axis: ~1032 AU aphelion: ~2049 AU period: ~33,100 yr Archived data from the JPL SBDB and MPC.jpldata-2014MPC-2013 Comparison thumb|center|500px|The orbits of Sedna, 2012 VP 113, Leleākūhonua, and other very distant objects along with the predicted orbit of Planet Nine. The three sednoids (pink) along with the red-colored extreme trans-Neptunian object (eTNO) orbits are suspected to be aligned with the hypothetical Planet Nine while the blue-colored eTNO orbits are anti-aligned. The highly elongated orbits colored brown include centaurs and damocloids with large aphelion distances over 200 AU. See also 22em 2005 VX 3 (308933) 2006 SQ 372 523622 2007 TG 422 90377 Sedna List of hyperbolic comets Planet Nine Notes lower-alpha jpldata-2014 Archived JPL Small-Body Database Browser: (2012 DR30) from https://archive.today/20141015135905/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012DR30 15 October 2014. MPC-2013 Archived MPC object data for 2012 DR30 (2009 FW54) from https://archive.today/20130712064429/http://www.minorplanetcenter.net/db_search/show_object?object_id=2012+DR30&commit=Show 12 July 2013. References 30em 2014-12-17 last obs. JPL Small-Body Database Browser: (2012 DR30) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3458336 Jet Propulsion Laboratory 19 November 2018 27 July 2020 https://web.archive.org/web/20200727143231/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3458336 live 2012 DR30 Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=2012+DR30 19 November 2018 15 February 2017 https://web.archive.org/web/20170215032740/http://www.minorplanetcenter.net/db_search/show_object?object_id=2012+DR30 live JPL Small-Body Database Search Engine: Asteroids and a > 100 (AU) JPL Solar System Dynamics http://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=all;obj_kind=ast;obj_numbered=all;OBJ_field=0;ORB_field=0;c1_group=ORB;c1_item=Bh;c1_op=%3E;c1_value=100;table_format=HTML;max_rows=100;format_option=comp;c_fields=AcBhBgBjBiBnBsCjCpAiCkBe;.cgifields=format_option;.cgifields=ast_orbit_class;.cgifields=table_format;.cgifields=obj_kind;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=com_orbit_class&query=1&c_sort=BhD 2014-10-15 29 November 2020 https://web.archive.org/web/20201129000234/https://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=all;obj_kind=ast;obj_numbered=all;OBJ_field=0;ORB_field=0;c1_group=ORB;c1_item=Bh;c1_op=%3E;c1_value=100;table_format=HTML;max_rows=100;format_option=comp;c_fields=AcBhBgBjBiBnBsCjCpAiCkBe;.cgifields=format_option;.cgifields=ast_orbit_class;.cgifields=table_format;.cgifields=obj_kind;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=com_orbit_class&query=1&c_sort=BhD live 6 Nathan A. Kaib Andrew C. Becker R. Lynne Jones Andrew W. Puckett Dmitry Bizyaev Benjamin Dilday Joshua A. Frieman Daniel J. Oravetz Kaike Pan Thomas Quinn Donald P. Schneider Shannon Watters April 2009 2006 SQ372: A Likely Long-Period Comet from the Inner Oort Cloud The Astrophysical Journal 695 1 268–275 2009ApJ...695..268K 10.1088/0004-637X/695/1/268 0901.1690 16987581 Horizons output http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2012DR30 Barycentric Osculating Orbital Elements for 2012 DR30 2014-03-06 28 November 2020 https://web.archive.org/web/20201128113216/https://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2012DR30 live (Solution using the Solar System Barycenter and barycentric coordinates. Select Ephemeris Type:Elements and Center:@0) Marc W. Buie Orbit Fit and Astrometric record for 12DR30 SwRI Space Science Department http://www.boulder.swri.edu/~buie/kbo/astrom/12DR30.html 2016-02-01 https://web.archive.org/web/20160205085032/http://www.boulder.swri.edu/~buie/kbo/astrom/12DR30.html 2016-02-05 dead etal Noemí Pinilla-Alonso Rosario Brunetto Mário N. De Prá Bryan J. Holler Elsa Hénault Ana Carolina de Souza Feliciano A JWST/DiSCo-TNOs portrait of the primordial Solar System through its trans-Neptunian objects https://hal.science/hal-04961629v1/file/s41550-024-02433-2.pdf Nature Astronomy December 2024 9 2 230–244 10.1038/s41550-024-02433-2 2025NatAs...9..230P 274932942 AstDyS 2012DR30 Ephemerides Department of Mathematics, University of Pisa, Italy https://newton.spacedys.com/astdys/index.php?pc=1.1.3.1&n=2012DR30&oc=500&y0=2016&m0=1&d0=1&h0=0&mi0=0&y1=2020&m1=1&d1=4&h1=0&mi1=0&ti=366&tiu=days 2017-02-14 3 May 2024 https://web.archive.org/web/20240503040532/https://newton.spacedys.com/astdys/index.php?pc=1.1.3.1&n=2012DR30&oc=500&y0=2016&m0=1&d0=1&h0=0&mi0=0&y1=2020&m1=1&d1=4&h1=0&mi1=0&ti=366&tiu=days live (Distance to Sun [R] from first day of 2016 to first day of 2020. Assuming average apparent magnitude for 2017.) 6 Cs. Kiss Gy. Szabó J. Horner B. C. Conn T. G. Müller E. Vilenius K. Sárneczky L. L. Kiss M. Bannister D. Bayliss A. Pál S. Góbi E. Verebélyi E. Lellouch P. Santos-Sanz J. L. Ortiz R. Duffard N. Morales July 2013 A portrait of the extreme solar system object 2012 DR30 Astronomy and Astrophysics 555 13 2013A&A...555A...3K 10.1051/0004-6361/201321147 1304.7112 54021504 List of Known Trans-Neptunian Objects Johnston's Archive 7 October 2018 Johnston, Wm. Robert http://www.johnstonsarchive.net/astro/tnoslist.html 19 November 2018 23 October 2019 https://web.archive.org/web/20191023180902/http://www.johnstonsarchive.net/astro/tnoslist.html live External links 2012 DR30 - Ein Transneptun mit ungewöhnlicher Bahn, www.spektrum.de, March 2012 de Mysterious solar system object 2012 DR30: period ~50,000 years, inclination 75°, perihelion 14 AU Transneptunian Object 2012 DR30 Is it a comet? Images 2012 DR30 2012 DR30 https://web.archive.org/web/20200115004321/http://aerith.net/comet/catalog/2012DR30/2012DR30.html 15 January 2020 (Seiichi Yoshida) Webcite archive of Epoch 2016-Jan-13 with aphelion (Q) of 2789 AU 2012DR30 20668643 668643 (668643) 2012 DR 30 Category:Scattered disc and detached objects Category:Damocloids Category:Centaurs (small Solar System bodies) Category:Inner Oort cloud Category:Discoveries by the PMO NEO Survey Program 20120222