1250 Galanthus

Main-belt asteroid October 2019 yes 1250 Galanthus #D6D6D6 K. Reinmuth Heidelberg Obs. 25 January 1933 (1250) Galanthus 1933 BD1971 OQ g @ ' l ae n T @ sGalanthus Galanthus (snowdrop)(herbaceous plants) main-belt(middle)background 4 September 2017 (JD 2458000.5) 0 84.84 yr (30,987 days) 3.2465 AU 1.8560 AU 2.5513 AU 0.2725 4.08 yr (1,488 days) 249.60° 0.2419 ms / day 15.169° 292.02° 217.17° 17.18 5.39 km19.394 0.152 km19.54 0.36 km20.062 0.112 km20.33 4.93 km21.00 2.9 km 3.918 0.0009 h3.92 h 0.04 0.020.0443 0.00690.0500 0.0170.055 0.0110.058 0.0020.06 0.04 C (assumed) 12.233 0.001 (R)12.2612.52 1250 Galanthus, provisional designation 1933 BD, is a dark background asteroid from the central regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 25 January 1933, by German astronomer Karl Reinmuth at the Heidelberg Observatory. The asteroid was named for the herbaceous plant Galanthus, also known as "snowdrop". Orbit and classification Galanthus is a non-family asteroid from the main belt's background population. It orbits the Sun in the central main-belt at a distance of 1.9–3.2 AU once every 4 years and 1 month (1,488 days; semi-major axis of 2.55 AU). Its orbit has an eccentricity of 0.27 and an inclination of 15° with respect to the ecliptic. The body's observation arc begins at Heidelberg the night after its official discovery observation. Physical characteristics Galanthus is an assumed carbonaceous C-type asteroid. Rotation period In the early 1980s, a rotational lightcurve of Galanthus was obtained during a survey conducted by Richard P. Binzel at the McDonald Observatory, Texas. Lightcurve analysis gave a well-defined rotation period of 3.92 hours with a brightness variation of 0.28 magnitude (U=3). The period was confirmed from photometric observations by astronomers at the Palomar Transient Factory in October 2015, which gave a similar period of 3.918 hours and an amplitude of 0.22 magnitude (U=2). 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, Galanthus measures between 17.18 and 21.00 kilometers in diameter and its surface has an albedo between 0.04 and 0.06. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0500 and a diameter of 21.0 kilometers based on an absolute magnitude of 12.26. Naming This minor planet was named after the herbaceous plant Galanthus, also known as "snowdrop". The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 115). Reinmuth's flowers Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between 1009 (1009) and 1200 (1200). This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants). References 30em 2017-11-27 last obs. JPL Small-Body Database Browser: 1250 Galanthus (1933 BD) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001250 Jet Propulsion Laboratory 31 December 2017 Dictionary of Minor Planet Names – (1250) Galanthus Schmadel Lutz D. Springer Berlin Heidelberg 102 2003 978-3-540-00238-3 10.1007/978-3-540-29925-7_1251 (1250) Galanthus Dictionary of Minor Planet Names – (1054) Forsytia Schmadel Lutz D. Springer Berlin Heidelberg 90 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1055 (1054) Forsytia 1250 Galanthus (1933 BD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1250 31 December 2017 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 1250 Galanthus – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1250 29 October 2019 1250 31 December 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) 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 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 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 31 December 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 31 December 2017 R. P. Binzel J. D. Mulholland December 1983 A photoelectric lightcurve survey of small main belt asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1983Icar...56..519B Icarus 56 3 519–533 0019-1035 1983Icar...56..519B 10.1016/0019-1035(83)90170-7 31 December 2017 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 1250 1249 Rutherfordia 1250 1251 Hedera 001250 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19330125