1027 Aesculapia

Themistian asteroid October 2019 yes 1027 Aesculapia #D6D6D6 11 November 1923 G. van Biesbroeck Yerkes Obs. (1027) Aesculapia YO 111942 DH1977 LP 1Arequipa 281908 BR Aesculāpius(Greek/Roman deity) main-beltThemis E s k j U ' l eI p i @Æsculapius 16 February 2017 (JD 2457800.5) 0 108.41 yr (39,595 days) 3.5625 AU 2.7408 AU 3.1517 AU 0.1304 5.60 yr (2,044 days) 121.70° 0.1762 ms / day 1.2537° 29.346° 132.13° 31.225 0.164 km32.05 km (derived)32.20 1.4 km32.38 8.42 km34.464 0.335 km35.25 13.39 km38.55 0.82 km 6.83 0.10 h (incorrect)9.791 0.002 h10 h (fragmentary)13.529 0.042 hLCDB-Hess-201719.506 0.1501 h 0.06 0.080.07 0.050.071 0.0030.0750 (derived)0.0856 0.00560.0981 0.0090.129 0.014 S 10.610.8010.910.9511.089 0.001 (S) 1027 Aesculapia, provisional designation YO 11, is a Themistian asteroid from the outer region of the asteroid belt, approximately 33 kilometers in diameter. It was discovered on 11 November 1923, by Belgian–American astronomer George Van Biesbroeck at Yerkes Observatory in Williams Bay, Wisconsin, United States. It is named for Aesculapius, the god of medicine in Greek mythology. Classification and orbit Aesculapia is a member of the Themis family, a dynamical group of carbonaceous outer-belt asteroids which are known for their nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.7–3.6 AU once every 5 years and 7 months (2,044 days). Its orbit has an eccentricity of 0.13 and an inclination of 1° with respect to the ecliptic. In 1899, it was first identified at Harvard Observatory's Boyden Station in Arequipa, Peru, and catalogued with the ad-hoc provisional designation "Arequipa 28". It was later seen at Heidelberg in 1908, and identified as 1908 BR, 15 years prior to its official discovery observation at Williams Bay. Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Aesculapia measures between 31.225 and 38.55 kilometers in diameter, and its surface has an albedo between and 0.06 and 0.129. The Collaborative Asteroid Lightcurve Link (CALL) derives an albedo of 0.075 and a diameter of 32.05 kilometers with an absolute magnitude of 10.9. Despite the body's low albedo, CALL classifies Aesculapia as a S-type rather than a C-type asteroid. Photometry In the last 20 years, photometric observations of Aesculapia gave several rotational lightcurves with significantly divergent rotation periods. First results obtained by Chester Maleszewski and René Roy were only fragmentary or incorrect (U=1/1). Photometry at the Palomar Transient Factory and observations by Astronomer Steven Ehlert gave a period of 9.791 and 19.506 hours with a brightness amplitude of 0.09 and 0.19 magnitude, respectively (U=2/2). CALL currently adopts a lightcurve obtained by Kylie Hess at Oakley Southern Sky Observatory in March 2015, which gave a period of 13.529 hours and a brightness variation of 0.09 magnitude (U=2).LCDB-Hess-2017 Naming This minor planet was named for Aesculapius, the Greek and Roman demigod of medicine and healing, son of Apollo and Coronis, after whom the asteroids 158 Koronis and 1862 Apollo are named, respectively. Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 98). Notes LCDB-Hess-2017 Hess (2017): rotation period 13.529 0.042 hours with a brightness amplitude of 0.09 mag and Quality Code of 2. Summary figures at http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1027%7CAesculapia Collaborative Asteroid Lightcurve Link (CALL) for (1027) Aesculapia References 30em 2016-06-09 last obs. JPL Small-Body Database Browser: 1027 Aesculapia (A923 YO11) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001027 Jet Propulsion Laboratory 8 February 2017 Dictionary of Minor Planet Names – (1027) Aesculapia Schmadel Lutz D. Springer Berlin Heidelberg 88 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1028 (1027) Aesculapia 1027 Aesculapia (A923 YO11) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1027 8 February 2017 Asteroids and comets rotation curves – (1027) Aesculapia Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001027 8 February 2017 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001027 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 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 119293330 8 February 2017 1027 8 February 2017 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 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 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 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 9341381 8 February 2017 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 Chester Maleszewski Maurice Clark December 2004 Bucknell University Observatory lightcurve results for 2003-2004 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004MPBu...31...93M The Minor Planet Bulletin 31 4 93–94 1052-8091 2004MPBu...31...93M 8 February 2017 Steven Ehlert Aaron Kingery July 2015 New Lightcurves of 1027 Aesculapia and 3395 Jitka http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015MPBu...42..211E The Minor Planet Bulletin 42 3 211 1052-8091 2015MPBu...42..211E 8 February 2017 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 8342929 8 February 2017 2017MPBu...44....3H The Minor Planet Bulletin: Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2015 February–March 1052-8091 Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 44 1 3–4 January 2017 Hess Kylie Bruner Madison Ditteon Richard 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 1027 1026 Ingrid 1027 1028 Lydina 001027 001027 Category:Discoveries by George Van Biesbroeck Category:Named minor planets 19231111