1179 Mally

Asteroid and long-lost minor planet October 2019 yes 1179 Mally #D6D6D6 19 March 1931 M. F. Wolf Heidelberg Obs. (1179) Mally 1931 FD Mally Wolf(discoverer's daughter-in-law) main-belt(middle) 4 September 2017 (JD 2458000.5) 0 86.30 yr (31,520 days) 3.0682 AU 2.1698 AU 2.6190 AU 0.1715 4.24 yr (1,548 days) 104.44° 0.2325 ms / day 8.7067° 6.8116° 234.15° 10.65 km (calculated)11.20 0.83 km13.159 0.183 km13.379 0.077 km14.41 0.47 km16.60 5.64 km 46.6917 0.1516 h 0.059 0.0200.0683 0.00800.07 0.090.071 0.0170.097 0.0150.10 (assumed) S/C 12.530 0.002 (R)12.7012.812.912.98 1179 Mally, provisional designation 1931 FD, is an asteroid and long-lost minor planet from the central region of the asteroid belt, approximately 13 kilometers in diameter. Discovered by Max Wolf in 1931, the asteroid was lost until its rediscovery in 1986. The discoverer named it after his daughter-in-law, Mally Wolf. Discovery and rediscovery Mally was discovered on 19 March 1931, by German astronomer Max Wolf at Heidelberg Observatory in southwest Germany. Soon after its initial discovery, it became one of few well known lost minor planets for over 55 years. In 1986, Mally was rediscovered by astronomers Lutz Schmadel, Richard Martin West and Hans-Emil Schuster, who remeasured the original discovery plates and computed alternative search ephemerides. This allowed them to find the body very near to its predicted position. In addition, historic photographic plates from the Palomar Sky Survey (1956–1958), the UK Schmidt Telescope (Australia), and the ESO Schmidt Telescope (Chile) confirmed the rediscovery. Orbit and classification Mally orbits the Sun in the central main-belt at a distance of 2.2–3.1 AU once every 4 years and 3 months (1,548 days). Its orbit has an eccentricity of 0.17 and an inclination of 9° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Heidelberg in 1931. Physical characteristics Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Mally measures between 11.20 and 16.60 kilometers in diameter, and its surface has an albedo between 0.059 and 0.097. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 – a compromise value between the brighter stony (0.20) and darker carbonaceous asteroids (0.057) used for bodies with a semi-major axis between 2.6 and 2.7 AU – and calculates a diameter of 10.7 kilometers based on an absolute magnitude of 12.98. Rotation period In September 2013, a rotational lightcurve of Mally was obtained from photometric observations taken at the Palomar Transient Factory in California. The fragmentary lightcurve gave a longer than average rotation period of 46.6 hours with a brightness variation of 0.08 magnitude. However, the obtained result is poorly rated by CALL (U=1). Naming This minor planet was named after Mally Wolf, wife of Franz Wolf and the discoverer's daughter-in-law. The official naming citation was published by Paul Herget in The Names of the Minor Planets in 1955 (H 110). References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1179 Mally (1931 FD) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001179 Jet Propulsion Laboratory 24 July 2017 1179 Mally (1931 FD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1179 26 October 2016 International Astronomical Union Circular 4278 5 December 1986 Brian G. Marsden Central Bureau for Astronomical Telegrams http://www.cbat.eps.harvard.edu/iauc/04200/04278.html 26 October 2016 Long Lost Planet Found Again 4 December 1986 European Southern Observatory Garching, Germany http://www.eso.org/public/unitedkingdom/news/eso8611/ 26 October 2016 Schmadel L. D. West R. M. 1988 Recovery of the long lost minor planet (1179) Mally Astronomische Nachrichten 309 3 223–225 1988AN....309..223S 10.1002/asna.2113090318 0004-6337 Dictionary of Minor Planet Names – (1179) Mally Schmadel Lutz D. Springer Berlin Heidelberg 99 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1180 (1179) Mally 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 14 September 2016 1179 26 October 2016 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 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 26 October 2016 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 24 July 2017 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) 6 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. Prince Shrinivas Kulkarni September 2015 Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W The Astronomical Journal 150 3 35 2015AJ....150...75W 10.1088/0004-6256/150/3/75 1504.04041 26 October 2016 External links (1179) Mally, at AstDyS, University of Pisa 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 1179 1178 Irmela 1179 1180 Rita 001179 Category:Discoveries by Max Wolf Category:Named minor planets 19310319 01179