1112 Polonia

Eoan asteroid 142 Polana May 2018 yes 1112 Polonia #D6D6D6 P. Shajn Simeiz Obs. 15 August 1928 (1112) Polonia 1928 PE1933 PAA908 XA p oʊ ˈ l oʊ n i əPolonia Poland(European country) main-belt(outer)Eos 23 March 2018 (JD 2458200.5) 0 89.20 yr (32,582 d) 3.3423 AU 2.6963 AU 3.0193 AU 0.1070 5.25 yr (1,916 d) 326.70° 0.1879 ms / day 8.9911° 302.86° 87.361° 35.76 1.6 km37.55 0.60 km39.661 0.334 km47.058 0.368 km 82.5 0.5 hlightcurve-plot-Warner 0.0763 0.00970.097 0.0230.128 0.0050.1319 0.012 S (Tholen)L (SDSS-MOC)B–V 0.797U–B 0.447 10.05 1112 Polonia (provisional designation 1928 PE) is an Eoan asteroid from the outer regions of the asteroid belt, approximately 38 km mi off 2 us in diameter. Discovered by Soviet astronomer Pelageya Shajn at Simeiz in 1928, it was the first asteroid discovery made by a woman. The L-type asteroid has a long rotation period of 82.5 hours, and was named for the country of Poland. Discovery Polonia was first observed as A908 XA at the German Heidelberg Observatory in December 1908. It was officially discovered on 15 August 1928, by Soviet astronomer Pelageya Shajn at the Simeiz Observatory on the Crimean peninsula. On the following night at Simeis, it was independently discovered by her college Grigory Neujmin. The Minor Planet Center only recognized the first discoverer. Polonia was Shajn's first discovery; and the first asteroid discovery made by a woman, bringing a long-standing tradition – which began with the discovery of 1 Ceres in 1801 – of more than a thousand minor planet discoveries exclusively made by male astronomers, to an end. Orbit and classification Polonia is a core member of the Eos family (606), the largest asteroid family of the outer main belt consisting of nearly 10,000 asteroids. 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 9° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Simeiz in 1928. Physical characteristics In the Tholen classification, Polonia is a common, stony S-type asteroid. In the more refined SDSS-based taxonomy, it is characterized as an uncommon L-type, which is similar to a K-type, the overall spectral type of the Eoan asteroids.23 Rotation period In October 2007, a rotational lightcurve of Polonia was obtained from photometric observations by American astronomer Brian Warner at his Palmer Divide Observatory in Colorado. Lightcurve analysis gave a long rotation period of 82.5 hours with a brightness amplitude of 0.20 magnitude (U=2).lightcurve-plot-Warner The asteroid's long period is close to that of a slow rotator. 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, Polonia measures between 35.76 and 47.058 kilometers in diameter and its surface has an albedo between 0.0763 and 0.1319. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.1319 and a diameter of 35.76 kilometers based on an absolute magnitude of 10.05. Naming This minor planet was named "Polonia", the Latin name for the European country of Poland. It is the first minor planet discovery made by a woman. The naming was proposed by L. Matkiewicz, an astronomer of Polish origin, who calculated the body's orbit. The official citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 104). Notes lightcurve-plot-Warner Lightcurve plot of 1(1112) Polonia, Palmer Divide Observatory, B. D. Warner (2007). Rotation period 82.5 0.5 hours with a brightness amplitude of 0.20 0.03 mag. Quality code is 2. Summary figures at the LCDB. References 30em 2017-10-29 last obs. JPL Small-Body Database Browser: 1112 Polonia (1928 PE) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001112 Jet Propulsion Laboratory 29 May 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 94 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1113 (1112) Polonia 1112 Polonia (1928 PE) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1112 29 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 Asteroid 1112 Polonia Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1112+Polonia 29 May 2018 https://web.archive.org/web/20200528105337/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1112+Polonia 28 May 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 119280014 J. M. Carvano P. H. Hasselmann D. Lazzaro T. Mothé-Diniz February 2010 SDSS-based taxonomic classification and orbital distribution of main belt asteroids https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_I0035_5_SDSSTAX_V1_1/data/sdsstax_ast_table.tab Astronomy and Astrophysics 510 12 2010A&A...510A..43C 10.1051/0004-6361/200913322 30 October 2019 free (PDS data set) 1112 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 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 October 2019 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 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) Warner, Brian D. June 2008 Asteroid Lightcurve Analysis at the Palmer Divide Observatory: September-December 2007 The Minor Planet Bulletin 35 2 67–71 1052-8091 2008MPBu...35...67W 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 1112 1111 Reinmuthia 1112 1113 Katja 001112 Category:Discoveries by Pelageya Shajn Category:Named minor planets 001112 19280815