182 Elsa

Main-belt Asteroid February 2019 yes 182 Elsa #D6D6D6 182Elsa (Lightcurve Inversion).png Lightcurve-based 3D-model of Elsa J. Palisa Austrian Naval Obs. 7 February 1878 (182) Elsa A878 CC; 1948 XS;1950 HY ' ɛ l z ə uncertain; various suggestions main-belt(inner)Massaliabackground 27 April 2019 (JD 2458600.5) 0 114.68 yr (41,886 d) 2.8656 AU 1.9657 AU 2.4156 AU 0.1863 3.75 yr (1,371 d) 282.09 ° 0.2625 ms / day 2.0054° 107.18° 310.85° 43.68 4.1 km44.000 4.279 km44 0.1 km45.15 0.62 km45.72 7.82 km 80.088 0.002 h 0.2083 0.0450.209 0.0070.21 0.080.2106 0.0603 Tholen SSMASS SB–V 0.862U–B 0.425 9.129.149.26 0.099.3 0.1 182 Elsa (' ɛ l z ə) is a Massalia or background asteroid from the inner regions of the asteroid belt, approximately 44 km mi off 2 us in diameter. It was discovered on 7 February 1878, by Austrian astronomer Johann Palisa at the Austrian Naval Observatory in today's Croatia. The S-type asteroid has a very long rotation period of 80 hours and likely an elongated shape. The origin of its name is uncertain. Orbit and classification Elsa is a member of the Massalia family (404), a very large inner belt asteroid family consisting of stony asteroids. In a different HCM-study, however, it has been found to be a non-family asteroid from the main belt's background population. It orbits the Sun in the inner main-belt at a distance of 2.0–2.9 AU once every 3 years and 9 months (1,371 days; semi-major axis of 2.42 AU). Its orbit has an eccentricity of 0.19 and an inclination of 2° with respect to the ecliptic. Naming The origin of this minor planet's name is uncertain. Originally, the asteroid was named "Elsbeth" – the Austrian variant of "Elisabeth" – and only later changed into a more lyrical "Elsa" with the consent of the discoverer, Johann Palisa. It may have been named after the character in the legend of Lohengrin perpetuated by Richard Wagner's opera of the same name.May 2018 It may also refer to the Empress Elisabeth of Austria (1854–1898), or to a relative of Admiral Bourgignon, who requested the naming, as he was the military superior of the discoverer at the Naval Observatory at Pola. Finally, the name "Elsbeth" just might have been chosen generically as it is one of the most common feminine Christian names. Physical characteristics Elsa has been characterized as a common, stony S-type asteroid in both the Tholen and SMASS classification. Rotation period The asteroid is a relatively slow rotator. In 1980, its rotation period was estimated to be about 3.3 Earth days. In 2008, a collaborative effort from three different sites under the lead of Frederick Pilcher was used to build a complete lightcurve for the asteroid, which showed a period of 80.088 0.002 hours with a brightness variation of 0.30 0.03 in magnitude. A possible companion has been proposed to explain the slow rotation. Other period determinations gave similar results between 80.166 and 80.23 hours with an outlier by the Palomar Transient Factory.lcdb-Durech-2011 Elsa has very amplified lightcurve indicating an elongated or irregular body. It was one of five minor planets included in the 1993 study, Transition Comets -- UV Search for OH Emissions in Asteroids, which was research involving amateur astronomers who were permitted to make use of the Hubble Space Telescope. 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, Elsa measures between 36 and 45.72 kilometers in diameter and its surface has an albedo between 0.196 and 0.2106. During 2002, Elsa was also observed by radar from the Arecibo Observatory. The return signal matched an effective diameter of 44 10 km. Notes lcdb-Durech-2011 See summary figures for (182) Elsa at the LCDB. References 30em 2018-09-18 last obs. JPL Small-Body Database Browser: 182 Elsa https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000182 Jet Propulsion Laboratory 13 February 2019 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg (182) Elsa 31 2007 978-3-540-29925-7 10.1007/978-3-540-29925-7_183 182 Elsa Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=182 29 May 2018 Christopher Magri Michael C. Nolan Steven J. Ostro Jon D. Giorgini January 2007 A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003 https://echo.jpl.nasa.gov/asteroids/MBAs/magri.etal.2007.mbas.pdf Icarus 186 1 126–151 2007Icar..186..126M 10.1016/j.icarus.2006.08.018 29 May 2018 Asteroid 182 Elsa Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=182+Elsa 29 May 2018 12 June 2018 https://web.archive.org/web/20180612114421/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=182+Elsa 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 119280014 Asteroid (182) Elsa AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=182&pc=1.1.6 25 May 2018 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 119293330 182 29 May 2018 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 – IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 13 February 2019 6 F. Marchis M. Kaasalainen E. F. Y. Hom J. Berthier J. Enriquez D. Hestroffer D. Le Mignant I. de Pater November 2006 Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey Icarus 185 1 39–63 2006Icar..185...39M 10.1016/j.icarus.2006.06.001 19081813 2600456 6 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 free 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 http://pasj.oxfordjournals.org/content/63/5/1117.full.pdf+html Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 17 October 2019 (online, AcuA catalog p. 153) 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 35447010 (catalog) 6 Chan-Kao Chang Wing-Huen Ip Ip Wing-huen Hsing-Wen Lin Yu-Chi Cheng Chow-Choong Ngeow Ting-Chang Yang Adam Waszczak Shrinivas R. Kulkarni David Levitan Branimir Sesar Russ Laher Jason Surace Thomas. A. Prince June 2014 313 New Asteroid Rotation Periods from Palomar Transient Factory Observations The Astrophysical Journal 788 1 21 2014ApJ...788...17C 10.1088/0004-637X/788/1/17 1405.1144 51100134 A. W. Harris J. W. Young July 1980 Asteroid rotation. III - 1978 observations Icarus 43 1 20–32 1980Icar...43...20H 10.1016/0019-1035(80)90084-6 6 J. Durech M. Kaasalainen B. D. Warner M. Fauerbach S. A. Marks S. Fauvaud M. Fauvaud J.-M. Vugnon F. Pilcher L. Bernasconi R. Behrend January 2009 Asteroid models from combined sparse and dense photometric data https://www.aanda.org/articles/aa/pdf/2009/01/aa10393-08.pdf Astronomy and Astrophysics 493 1 291–297 2009A&A...493..291D 10.1051/0004-6361:200810393 24 August 2017 free Frederick Pilcher Vladimir Benishek Richard Krajewski April 2009 Period Determination for 182 Elsa: A Collaboration Triumph The Minor Planet Bulletin 36 2 40 1052-8091 2009MPBu...36...40P D. Gandolfi M. Cigna D. Fulvio C. Blanco January 2009 CCD and photon-counting photometric observations of asteroids carried out at Padova and Catania observatories Planetary and Space Science 57 1 1–9 2009P&SS...57....1G 10.1016/j.pss.2008.09.014 0810.1560 18929245 A. W. Harris J. W. Young Thor Dockweiler J. Gibson M. Poutanen E. Bowell January 1992 Asteroid lightcurve observations from 1981 Icarus 95 1 115–147 0019-1035 1992Icar...95..115H 10.1016/0019-1035(92)90195-D 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 Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 182 181 Eucharis 182 183 Istria 000182 Category:Discoveries by Johann Palisa Category:Named minor planets 000182 000182 18780207