(145453) 2005 RR43

Trans-Neptunian object yes #C2E0FF (145453) 2005 RR 43 Andrew C. BeckerAndrew W. PuckettJeremy M. Kubica 9 September 2005 Apache Point Obs. (145453) 2005 RR 43 cubewanoextended (DES) 13 January 2016 (JD 2457400.5) 3 43.163 AU Tm on 37.276 AU Tm on 49.050 AU Tm on on 28.506° 0.13639 43.576° 0.00346°/d 283.58 yr (103578 d) 279.66° 85.852° 300 43 34 km 7.87 h B−V=0.77V−R=0.41B0−V0=0.790 0.44 0.12 0.10 4.144.04.4 (per Brown) 0.0034757 ms / day 7.87 h d on on 14301 days (39.15 yr) 36.394 AU Tm on 32.9176 AU Tm on (145453) 2005 RR 43 is a trans-Neptunian object about 300 km mi in diameter. It belongs to the Haumea family, a group of bright, water ice-rich objects in the Kuiper belt that are believed to have fragmented off the dwarf planet Haumea. 2005 RR 43 was discovered on 9 September 2005 by Andrew Becker, Andrew Puckett and Jeremy Kubica at Apache Point Observatory in Sunspot, New Mexico. History Discovery 2005 RR 43 was discovered by astronomers Andrew Becker, Andrew Puckett and Jeremy Kubica on 9 September 2005, during observations for the Sloan Digital Sky Survey. The discovery observations were made using the 2.5-meter telescope at Apache Point Observatory in Sunspot, New Mexico. The discoverers further observed 2005 RR 43 until December 2005. The team's discovery of 2005 RR 43 alongside several other trans-Neptunian objects was announced by the Minor Planet Center (MPC) on 31 August 2006. On the following day, the MPC reported pre-discovery detections of 2005 RR 43 in 2001–2002 observations by Palomar Observatory's Near-Earth Asteroid Tracking program. Since then, 2005 RR 43 has been found in even earlier observations by the Siding Spring Observatory; these include Digitized Sky Survey images from November 1976, August 1982, and October 1983. Number and name This object has the minor planet provisional designation 2005 RR 43, which was given by the MPC in the discovery announcement. The provisional designation indicates the year and half-month of the object's discovery date. 2005 RR 43 received its permanent minor planet catalog number of 145453 from the MPC on 5 December 2006. The Kuiper belt objects 145451 Rumina and 145452 Ritona directly come before 2005 RR 43's number in the minor planet catalog. 2005 RR 43 does not have a proper name and the discoverers' privilege for naming this object expired ten years after it was numbered.6 According to naming guidelines by the International Astronomical Union's Working Group for Small Bodies Nomenclature, 2005 RR 43 is open for name suggestions that relate to creation myths, as recommended for Kuiper belt objects in general.8 Origin Haumea family Based on their common pattern of IR water-ice absorptions, neutral visible spectrum, and the clustering of their orbital elements, the other KBOs (24835) 1995 SM 55, (19308) 1996 TO 66, (55636) 2002 TX 300 and (120178) 2003 OP 32 appear to be collisional fragments broken off the dwarf planet Haumea. Surface The surface is covered by water ice as attested by deep absorption at 1.5 and 2 μm in the infrared spectrum and neutral (i.e. non-red) colour. Scattering models reveal that the observed water ice is, at least in a significant fraction, crystalline and organics, detected on the surface of many trans-Neptunian objects (TNOs), are completely absent. These physical and orbital characteristics common with Haumea led to suggestion that 2005 RR 43 is a member of the Haumea collisional family. The object, together with other members of the family ((19308) 1996 TO 66, (24835) 1995 SM 55, (55636) 2002 TX 300 and (120178) 2003 OP 32), would be created from ice mantle ejected from the proto-Haumea as result of a collision with another large (around 1660 km mi) body. Neutral (non-red) color index450pxThe + marks 2005 RR 43 (B−V=0.77, V−R=0.41) on this color plot of TNOs. All the other Haumea-family members are located to the lower left of this point. References 2014-01-02 last obs JPL Small-Body Database Browser: 145453 (2005 RR43) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=145453 7 April 2016 (145453) = 2005 RR43 https://www.minorplanetcenter.net/db_search/show_object?object_id=145453 Minor Planet Center 2025-09-08 New- And Old-Style Minor Planet Designations https://www.minorplanetcenter.net/iau/info/DesDoc.html Minor Planet Center 2025-09-08 Rules and Guidelines for Naming Non-Cometary Small Solar-System Bodies https://www.wgsbn-iau.org/documentation/NamesAndCitations.pdf IAU Working Group for Small Bodies Nomenclature 22 February 2025 2025-09-08 A. C. Becker A. W. Puckett J. Kubika B. G. Marsden Brian G. Marsden MPEC 2006-Q70 : 2005 RP43, 2005 RQ43, 2005 RR43, 2005 RS43, 2005 SC278, 2005 SD278, 2005 SE278 https://www.minorplanetcenter.net/mpec/K06/K06Q70.html Minor Planet Electronic Circular Minor Planet Center 2006-08-31 2006-Q70 2025-09-08 2006MPEC....Q...70B etal R. Bambery E. Helin S. Pravdo M. Hicks K. Lawrence R. Thicksten MPEC 2006-R01 : 2005 RR43 https://www.minorplanetcenter.net/mpec/K06/K06R01.html Minor Planet Electronic Circular Minor Planet Center 2006-09-01 2006-R01 2025-09-08 2006MPEC....R...01B M.P.C. 58206 https://minorplanetcenter.net/iau/ECS/MPCArchive/2006/MPC_20061205.pdf#page=160 Minor Planet Circulars Minor Planet Center 58206 160 2006-12-05 2025-07-21 (145453) 2005 RR 43 Precovery Images https://andrew-lowe.ca/145453.htm Andrew Lowe Andrew Lowe (astronomer) andrew-lowe.ca 2025-09-08 live https://web.archive.org/web/20170427003940/https://andrew-lowe.ca/145453.htm 2017-04-27 MPEC 2009-R09 :Distant Minor Planets (2009 SEPT. 16.0 TT) 2009-09-04 IAU Minor Planet Center https://minorplanetcenter.net/mpec/K09/K09R09.html 2011-01-08 Marc W. Buie Marc W. Buie 2008-12-06 using 140 observations Orbit Fit and Astrometric record for 145453 SwRI (Space Science Department) http://www.boulder.swri.edu/~buie/kbo/astrom/145453.html 2009-10-04 Carry Benoit Snodgrass Colin Lacerda Pedro Hainaut Olivier Dumas Christophe 16 July 2012 Characterisation of candidate members of (136108) Haumea's family: II. Follow-up observations http://benoit.carry.free.fr/science/article/2012-AA-544-Carry.pdf Astronomy & Astrophysics EDP Sciences 544 10.1051/0004-6361/201219044 1207.6491 8 June 2014 2012A&A...544A.137C A137 119256112 dead https://web.archive.org/web/20141107172122/http://benoit.carry.free.fr/science/article/2012-AA-544-Carry.pdf 7 November 2014 How many dwarf planets are there in the outer solar system? Michael E. Brown Michael E. Brown http://www.gps.caltech.edu/~mbrown/dps.html 2014-11-07 dead https://web.archive.org/web/20111018154917/http://www.gps.caltech.edu/~mbrown/dps.html 2011-10-18 Snodgrass, Carry Dumas, Hainaut Characterisation of candidate members of (136108) Haumea's family Astronomy and Astrophysics 16 December 2009 0912.3171 10.1051/0004-6361/200913031 2010A&A...511A..72S 511 A72 62880843 The Youthful Appearance of the 2003 EL61 Collisional Family David L. Rabinowitz Bradley E. Schaefer Martha W. Schaefer Suzanne W. Tourtellotte 2008 The Astronomical Journal 0804.2864 2008AJ....136.1502R 10.1088/0004-6256/136/4/1502 136 4 1502–1509 117167835 The water ice rich surface of (145453) 2005 RR43: a case for a carbon-depleted population of TNOs? Pinilla-Alonso, N. Licandro, J. Gil-Hutton, R. Brunetto, R. Astronomy and Astrophysics June 2007 468 1 2007A&A...468L..25P 10.1051/0004-6361:20077294 L25 astro-ph/0703098 18546361 http://www.aanda.org/articles/aa/pdf/2007/22/aa7294-07.pdf (145453) = 2005 RR43 Orbit Michael E. Brown Kristina M. Barkume Darin Ragozzine Emily L. Schaller 2007 A collisional family of icy objects in the Kuiper belt Nature 446 7133 294–296 10.1038/nature05619 17361177 2007Natur.446..294B 4430027 https://authors.library.caltech.edu/34346/2/nature05619-s1.pdf 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 List of TNOs, Minor Planet Center (145453) 2005 RR43 Precovery Images 145453 145452 Ritona 145453 (145453) 2005 RR 43 145453 145453 Category:Discoveries by Andrew C. Becker Category:Discoveries by Andrew W. Puckett Category:Discoveries by Jeremy Martin Kubica 20050909