1303 Luthera

Asteroid October 2019 yes 1303 Luthera #D6D6D6 A. Schwassmann Bergedorf Obs. 16 March 1928 (1303) Luthera 1928 FP1926 XD1928 HH1972 VP 1A917 KC Robert Luther(German astronomer) main-belt(outer)Luthera 4 September 2017 (JD 2458000.5) 0 89.60 yr (32,726 days) 3.5680 AU 2.8910 AU 3.2295 AU 0.1048 5.80 yr (2,120 days) 198.00° 0.1698 ms / day 19.491° 72.049° 100.43° 81.685 0.494 km85.08 km (derived)87.15 1.13 km90.65 25.04 km91.35 24.52 km92.118 2.084 km112.74 1.41 km 5.878 0.003 h7.92 0.05 h 0.024 0.0030.0387 (derived)0.04 0.020.04 0.030.0523 0.00930.059 0.002 C 9.009.409.59.51 1303 Luthera, provisional designation 1928 FP, is a dark asteroid and the parent body of the Luthera family, located in the outermost regions of the asteroid belt. It measures approximately 90 kilometers in diameter. The asteroid was discovered on 16 March 1928, by astronomer Friedrich Schwassmann at the Bergedorf Observatory in Hamburg, Germany, and later named after German astronomer Robert Luther. Orbit and classification Luthera is the parent body of the Luthera family (904), a smaller asteroid family of less than 200 known members.23 It orbits the Sun in the outermost asteroid belt at a distance of 2.9–3.6 AU once every 5 years and 10 months (2,120 days; semi-major axis of 3.23 AU). Its orbit has an eccentricity of 0.10 and an inclination of 19° with respect to the ecliptic. The asteroid was first observed as A917 KC at Simeiz Observatory in May 2017. The body's observation arc begins at Heidelberg Observatory in April 1928, or one month after its official discovery observation at Bergedorf. Physical characteristics Due to its low geometric albedo, Luthera is an assumed carbonaceous C-type asteroid, while the overall spectral type for members of the Luthera family is that of an X-type.23 Rotation period In February 2008, a rotational lightcurve of Luthera was obtained from photometric observations by Mexican astronomer Pedro Sada at the University of Monterrey, Mexico. Lightcurve analysis gave a short rotation period of 5.878 hours with a low brightness variation of 0.05 magnitude, indicative for a nearly spherical shape (U=3). A lower-rated lightcurve with a period of 7.92 hours and an amplitude of 0.06 magnitude was obtained by French amateur astronomer Pierre Antonini in May 2009 (U=2). 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, Luthera measures between 81.685 and 112.74 kilometers in diameter and its surface has a low albedo between 0.024 and 0.059. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0387 and a diameter of 85.08 kilometers based on an absolute magnitude of 9.5. Naming This minor planet was named after German astronomer Karl Theodor Robert Luther (1822–1900), who was a discoverer of minor planets himself, most notably 17 Thetis, 90 Antiope (binary) and 288 Glauke (slow rotator). The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (1303 H 119). The lunar crater Luther has also been named after him. References 30em 2017-11-25 last obs. JPL Small-Body Database Browser: 1303 Luthera (1928 FP) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001303 https://web.archive.org/web/20200819233826/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001303 dead 19 August 2020 Jet Propulsion Laboratory 15 December 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 107 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1304 (1303) Luthera 1303 Luthera (1928 FP) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1303 15 December 2017 Asteroids and comets rotation curves – (1303) Luthera Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001303 15 December 2017 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001303 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 Asteroid 1303 Luthera – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1303+Luthera#Asteroid%201303%20LutheraEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 19 August 2020 https://web.archive.org/web/20200819224828/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1303+Luthera#Asteroid%201303%20LutheraEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 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 1303 15 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) 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 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 15 December 2017 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 15 December 2017 Sada, Pedro V. September 2008 CCD Photometry of Six Asteroids from the Universidad de Monterry Observatory http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35..105S The Minor Planet Bulletin 35 3 105–107 1052-8091 2008MPBu...35..105S 15 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 1303 1302 Werra 1303 1304 Arosa 001303 Category:Discoveries by Friedrich Karl Arnold Schwassmann Category:Named minor planets 19280316