1981 Midas

Apollo asteroid October 2019 yes 1981 Midas #FFC2E0 Midas Arecibo radar 2018 Mar 23.gif Radar images of Midas by the Arecibo Observatory in March 2018 6 March 1973 C. Kowal Palomar Obs. (1981) Midas 1973 EA ˈ m ai d @ shttp://www.lexico.com/definition/Midas https://web.archive.org/web/20200204154416/https://www.lexico.com/definition/midas dead 4 February 2020 Midas Lexico UK English Dictionary Oxford University Press Midās (Greek mythology) Apollo NEO PHA Venus-crosser Mars-crosser 4 September 2017 (JD 2458000.5) 0 41.97 yr (15,330 days) 2.9307 AU 0.6212 AU 1.7759 AU 0.6502 2.37 yr (864 days) 256.48° 0.4165 ms / day 39.833° 356.90° 267.80° 0.0045 AU (1.8 LD) 1.95 0.07 km 3.4 km (outdated) 5.22 h 0.2661 (derived) 0.293 0.025 SMASS V V 15.18 15.2 15.50 15.6 0.2 15.96 0.23 1981 Midas, provisional designation 1973 EA, is a vestoid asteroid, classified as a near-Earth object and potentially hazardous asteroid, approximately 2 kilometers in diameter. It was discovered on 6 March 1973 by American astronomer Charles Kowal at Palomar Observatory in San Diego County, California. It was named after King Midas from Greek mythology. Classification and orbit The moderately bright V-type asteroid is also an Apollo asteroid, as well as a Venus and Mars-crosser. The asteroid orbits the Sun at a distance of 0.6–2.9 AU once every 2 years and 4 months (864 days). Its orbit has an eccentricity of 0.65 and an inclination of 40° with respect to the ecliptic. Midas has a low minimum orbit intersection distance with Earth of 0.0036 AU km mi on off, which corresponds to 1.5 lunar distance (Earth–Moon distance). However, it does not pose an impact risk for the foreseeable future. On 19 March 1947 it passed 0.0298 AU km mi on on from Earth. The last notable close approach was on 21 March 2018 passing 0.08957 AU km mi on off from Earth and shining at an apparent magnitude of +12.4. The next notable close approach will be on 14 September 2032 passing slightly closer at 0.08635 AU km mi on off from Earth. As no precoveries are known, the asteroid's observation arc begins with its discovery observation at Palomar in 1973. With a semi-major axis of 1.78 AU, when 1 AU from the Sun (and passing Earth's orbit) the asteroid is moving at 35.7 km/s with respect to the Sun.speed For comparison Earth orbits the Sun at 30 km/s. Physical characteristics Three rotational lightcurves obtained from photometric observations gave a concurring rotation period of 5.24 hours with a relatively high brightness variation of 0.65, 0.8 and 0.87 in magnitude, respectively (U=3/2/3). According to the survey carried out by the Japanese Akari satellite, Midas measures 1.95 kilometers in diameter and its surface has an albedo of 0.293, while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.266 and calculates an identical diameter of 1.95 kilometers with an absolute magnitude of 15.6. In 1987, Midas was also detected by radar from Goldstone Deep Space Communications Complex at a distance of 0.08 AU with a measured maximal radar cross-section of 0.1 km2. Naming This minor planet was named after the figure from Greek mythology, Midas, the King of Phrygia, who turned whatever he touched to gold. He received this ability as an award, but soon realized that this gift was a curse when his daughter turned into a statue after he had touched her. Relieved of his power by bathing in the river Pactolus, other accounts also tell his death caused by starvation. The official 1981 naming citation was published by the Minor Planet Center on 15 October 1977 (M.P.C. 4237). Notes speed v = 42.1219 1/r − 0.5/a, where r is the distance from the Sun, and a is the major semi-axis. Objects move fastest at perihelion and slowest at aphelion. References 30em 4 Ostro S. J. Jurgens R. F. Rosema K. D. Winkler R. Yeomans D. K. Campbell D. B. Chandler J. F. Shapiro I. I. Hine A. A. Velez R. Asteroid radar astrometry Astronomical Journal 102 1490–1502 October 1991 1991AJ....102.1490O 10.1086/115975 2015-02-24 last obs. JPL Small-Body Database Browser: 1981 Midas (1973 EA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001981 Jet Propulsion Laboratory 1 July 2017 Dictionary of Minor Planet Names – (1981) Midas Schmadel Lutz D. Springer Berlin Heidelberg 160 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1982 (1981) Midas 1981 Midas (1973 EA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1981 18 September 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited Appendix Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2013-12-30 last obs JPL Close-Approach Data: 1981 Midas (1973 EA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Midas;cad=1#cad https://web.archive.org/web/20200828175338/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Midas;cad=1#cad dead 2020-08-28 2014-01-31 (1981) Midas Ephemerides for 15 Feb 2018 through 15 Apr 2018 NEODyS (Near Earth Objects Dynamic Site) https://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=1981&oc=500&y0=2018&m0=2&d0=15&h0=0&mi0=0&y1=2018&m1=4&d1=15&h1=0&mi1=0&ti=1.0&tiu=days 2014-01-31 1981 18 September 2016 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) Mottola, S. de Angelis, G. di Martino, M. Erikson, A. Harris, A. W. Hahn, G. Neukum, G. Pravec, P. Wolf, M. March 1995 The EUNEASO Photometric Follow-up Program Abstracts of the Lunar and Planetary Science Conference 26 1003 1995LPI....26.1003M Wisniewski, W. Z. Michalowski, T. M. Harris, A. W. McMillan, R. S. March 1995 Photoelectric Observations of 125 Asteroids Abstracts of the Lunar and Planetary Science Conference 26 1511 1995LPI....26.1511W 8 Torppa, J. Aksnes, K. Dai, Z. Grav, T. Hahn, G. Laakso, T. Lagerkvist, C.-I. Muinonen, K. Niemelaa, J. Naaraanen, J. Rickman, H. Virtanen, J. August 2005 Spins and Shapes of Potentially Hazardous Asteroids American Astronomical Society 37 643 2005DPS....37.1526T Pravec, Petr Harris, Alan W. Kusnirák, Peter Galád, Adrián Hornoch, Kamil September 2012 Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations Icarus 221 1 365–387 2012Icar..221..365P 10.1016/j.icarus.2012.07.026 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 Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 External links IAUC 2816 (13 August 1975) IAUC 2890 (29 December 1975) IAUC 2979 (26 July 1976) NeoDys Close Approaches from 1950 to 2100 Dictionary of Minor Planet Names, Google books Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) 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 Asteroid Hazards, Part 1: What Makes an Asteroid a Hazard? Minor Planet Center on YouTube 1981 1981 Midas 1980 Tezcatlipoca 1981 1982 Cline 001981 Category:Discoveries by Charles T. Kowal Category:Named minor planets 001981 001981 001981 19730306