1148 Rarahu

Main-belt asteroid October 2019 yes 1148 Rarahu #D6D6D6 1148Rarahu (Lightcurve Inversion).png Lightcurve-based 3D-model of Rarahu A. Deutsch Simeiz Obs. 5 July 1929 (1148) Rarahu 1929 NAA924 OA Rarahu (based on a French novel by Pierre Loti) main-belt(outer)Eos 4 September 2017 (JD 2458000.5) 0 87.98 yr (32,135 days) 3.3477 AU 2.6909 AU 3.0193 AU 0.1088 5.25 yr (1,916 days) 278.28° 0.1879 ms / day 10.827° 145.43° 174.80° 26.311 0.283 km27.512 0.371 km32.81 0.56 km33.23 2.9 km49.11 0.64 km 6.54 0.05 h6.54448 0.00002 hlcdb-Hanus-2016d6.54449 0.00005 h6.5447 0.0006 h 0.064 0.0150.1393 0.0280.177 0.0070.2205 0.0616 Tholen SSMASS KB–V 0.868U–B 0.444 10.1510.46 0.35 1148 Rarahu, provisional designation 1929 NA and previously also known as 1148 Raraju,Name-correction is an Eoan asteroid from the outer regions of the asteroid belt, approximately 32 kilometers in diameter. Discovered by Alexander Deutsch at the Simeiz Observatory in 1929, the asteroid's name was taken from a French novel by Pierre Loti. Discovery Rarahu was discovered on 5 July 1929, by Soviet astronomer Alexander Deutsch at the Simeiz Observatory on the Crimean peninsula. On July 28, it was independently discovered by Cyril Jackson and Harry Wood at Johannesburg Observatory in South Africa. The Minor Planet Center only recognizes the first discoverer. Orbit and classification Rarahu is a member the Eos family (606), the largest asteroid family of the outer main belt, named after its parent body, the asteroid 221 Eos. The family consists of nearly 10,000 asteroids.23 It orbits the Sun at a distance of 2.7–3.3 AU once every 5 years and 3 months (1,916 days; semi-major axis of 3.02 AU). Its orbit has an eccentricity of 0.11 and an inclination of 11° with respect to the ecliptic. The asteroid was first observed as A924 OA at Simeiz Observatory in July 1924. The body's observation arc begins at Johannesburg in July 1929, one week after its official discovery observation at Simeiz. Physical characteristics In the Tholen classification, Rarahu is a stony S-type asteroid. In the SMASS classification it is a K-type asteroid, which is a refined spectral type to which most members of the Eos family, including the parent body, belong to. Rotation period Between 2002 and 2011, three rotational lightcurves of Rarahu were obtained from photometric observations by French amateur astronomers René Roy, Laurent Brunetto and Pierre Antonini. Lightcurve analysis gave a consolidated rotation period of 6.5447 hours with a brightness amplitude between 0.05 and 0.94 magnitude (U=3-). Spin axis The asteroid's lightcurve has also been modeled several times and gave a concurring period of 6.54448 and 6.54449 hours, respectively.lcdb-Hanus-2016d The body's spin axis has also been determined to be at (146.0°, −2.0°) and (326.0°, −2.0°) in ecliptic coordinates (λ, β).lcdb-Hanus-2016d Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Rarahu measures between 26.311 and 49.11 kilometers in diameter and its surface has an albedo between 0.064 and 0.2205. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.1393 and a diameter of 33.23 kilometers based on an absolute magnitude of 10.15. Naming This minor planet's name was taken from the novel fr Le mariage de Loti (Loti's Marriage; 1880) by French novelist and naval officer Pierre Loti (1850–1923). The Polynesian idyll was originally titled "Rarahu", which is the Tahitian name for a girl. The official naming citation that already correctly spelled the asteroid's name (see below) was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 107). Wrong spelling In the original publication, the German journal Astronomische Nachrichten incorrectly spelled this minor planet's name as "Raraju" rather than "Rarahu", which is the original French spelling, due to an error in the transliteration process from French to Russian and then to German. The officially corrected name was published by the Minor Planet Center on 27 December 1985 (M.P.C. 10194).Name-correction Notes lcdb-Hanus-2016d Hanus, J.; Delbo, M.; Ali-Lagoa, V.; Bolin, B.; et al. (2016) Astron. Astrophys., submitted. Modeled lightcurve of (1148) Rarahu with sidereal rotation period 6.54448 0.00002 hours and poles at (146.0°, −2.0°) and (326.0°, −2.0°). Summary figures at the LCDB Name-correction The following statement from the IAU General Assembly was published in the Minor Planet Circular on 27 December 1985, quote:"Note on the name of (1148). Following discussions among the parties involved, it was affirmed that erroneous transliteration (from French to Russian to German) caused the name of this minor planet to be spelled incorrectly in the A.N. (when the name was introduced), recent editions of the EMP and other standard references. The explanation of the name in "The Names of the Minor Planets" (Cincinnati 1955, 1968) is correct, and henceforth the original French spelling, RARAHU (not Raraju), is to be used." References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1148 Rarahu (1929 NA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001148 Jet Propulsion Laboratory 5 January 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 97 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1149 (1148) Rarahu 1148 Rarahu (1929 NA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1148 5 January 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 5 January 2018 Asteroids and comets rotation curves – (1148) Rarahu Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001148 5 January 2018 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001148 dead 6 Joseph R. Masiero T. Grav A. K. Mainzer C. R. Nugent J. M. Bauer R. Stevenson S. Sonnett August 2014 Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 Asteroid 1148 Rarahu – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1148+Rarahu#Asteroid%201148%20RarahuEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 https://web.archive.org/web/20201004033819/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1148+Rarahu#Asteroid%201148%20RarahuEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 4 October 2020 dead D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 9780816532131 1148 5 January 2018 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. Spahr R. M. Cutri E. Wright J. Watkins W. Mo C. Maleszewski November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 6 Fumihiko Usui Daisuke Kuroda Thomas G. Müller Sunao Hasegawa Masateru Ishiguro Takafumi Ootsubo Daisuke Ishihara Hirokazu Kataza Satoshi Takita Shinki Oyabu Munetaka Ueno Hideo Matsuhara Takashi Onaka October 2011 Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 (online, AcuA catalog p. 153) E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 October 2019 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. Cabrera November 2012 Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 5 January 2018 6 J. Hanus M. Delbo' V. Alí-Lagoa B. Bolin R. Jedicke J. Durech H. Cibulková P. Pravec P. Kusnirák R. Behrend F. Marchis P. Antonini L. Arnold M. Audejean M. Bachschmidt L. Bernasconi L. Brunetto S. Casulli R. Dymock N. Esseiva M. Esteban O. Gerteis H. de Groot H. Gully Hiroko Hamanowa Hiromi Hamanowa P. Krafft M. Lehký F. Manzini J. Michelet E. Morelle J. Oey F. Pilcher F. Reignier R. Roy P. A. Salom B. D. Warner January 2018 Spin states of asteroids in the Eos collisional family Icarus 299 84–96 2018Icar..299...84H 10.1016/j.icarus.2017.07.007 1707.05507 6 Hanus, J. Durech, J. Broz, M. Warner, B. D. Pilcher, F. Stephens, R. Oey, J. Bernasconi, L. Casulli, S. Behrend, R. Polishook, D. Henych, T. Lehký, M. Yoshida, F. Ito, T. June 2011 A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011A&A...530A.134H Astronomy & Astrophysics 530 16 2011A&A...530A.134H 10.1051/0004-6361/201116738 1104.4114 5 January 2018 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. Chambers Heather Flewelling Nick Kaiser Eugen A. Magnier Jeff S. Morgan Paul A. Price John L. Tonry Christopher Waters November 2015 Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 5 January 2018 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR https://web.archive.org/web/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1148 1147 Stavropolis 1148 1149 Volga 001148 Category:Discoveries by Alexander Nikolaevich Deutsch Category:Named minor planets 001148 001148 19290705