11118 Modra

Main-belt Flora asteroid October 2019 yes 11118 Modra #D6D6D6 9 August 1996 A. GaládD. Kalmančok Modra Obs. (11118) Modra 1996 PK1991 FL 1 Modra(town and observatory) main-beltFlora 4 September 2017 (JD 2458000.5) 0 25.44 yr (9,291 days) 2.5052 AU 2.1225 AU 2.3139 AU 0.0827 3.52 yr (1,286 days) 139.39° 0.2800 ms / day 3.0326° 7.4717° 204.63° 3.74 km (calculated)8.69 3.13 km 27.12 0.02 h27.1481 0.0409 h 0.054 0.1050.24 (assumed) SC 14.314.211 0.005 (R)14.17 0.3614.10 11118 Modra (provisional designation 1996 PK) is a Flora asteroid of uncertain composition from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 9 August 1996, by Slovak astronomers Adrián Galád and Dušan Kalmančok at the Modra Observatory in Slovakia, and named for the town Modra where the discovering observatory is located. Classification and orbit Modra is a member of the Flora family, one of the largest families of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 2.1–2.5 AU once every 3 years and 6 months (1,286 days). Its orbit has an eccentricity of 0.08 and an inclination of 3° with respect to the ecliptic. A first precovery was taken at ESO's La Silla Observatory in 1991, extending the asteroid's observation arc by 5 years prior to its discovery. Rotation period In September 2010, a photometric lightcurve analysis of Modra by American astronomer Brian Warner at his Palmer Divide Observatory, Colorado, rendered an unambiguous period of 27.12 0.02 hours with a brightness variation of 0.53 in magnitude (U=3). A second lightcurve obtained during the wide-field survey at the U.S. Palomar Transient Factory in August 2010, and gave a period of 27.1481 0.0409 hours with an amplitude of 0.42 (U=2). Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, the asteroid has a low albedo of 0.05. In agreement, the large-scale survey by Pan-STARRS (PS1) rates it as a dark carbonaceous body. However, the Collaborative Asteroid Lightcurve Link (CALL) assumes a much higher albedo of 0.24 – derived from 8 Flora, the orbital family's largest member and namesake – and groups it to the S-type asteroid. The different albedos of the two spectral classes also translate into divergent estimates for the body's diameter. While CALL calculates 3.7 kilometers, NASA's space-based survey inferred a much larger diameter of 8.7 kilometers. Naming This minor planet was named after both the small historical town of Modra, located in the Bratislava Region of Slovakia, and the Modra Observatory of the Institute of Astronomy at Comenius University, where this asteroid had been discovered. The approved naming citation was published by the Minor Planet Center on 28 September 1999 (M.P.C. 36130). References 30em 2016-08-23 last obs. JPL Small-Body Database Browser: 11118 Modra (1996 PK) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011118 Jet Propulsion Laboratory 5 July 2017 Dictionary of Minor Planet Names – (11118) Modra Schmadel Lutz D. Springer Berlin Heidelberg 753 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_8231 (11118) Modra 11118 Modra (1996 PK) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=11118 25 January 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 17 May 2016 11118 17 May 2016 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 17 May 2016 Warner, Brian D. April 2011 Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2010 September–December http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38...82W The Minor Planet Bulletin 38 2 82–86 1052-8091 2011MPBu...38...82W 17 May 2016 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 17 May 2016 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. Chambers Heather Flewelling Nick Kaiser Eugen A. Magnier Jeff S. Morgan Paul A. Price John L. Tonry Christopher Waters November 2015 Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 17 May 2016 External links 3Kn3s98KRYw The Palmer Divide Observatory: Tour given by Brian Warner (time 4:03 min.) Lightcurve plot of 11118 Modra, Palmer Divide Observatory, B. D. Warner (2010) 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 (10001)-(15000) – Minor Planet Center 11118 (11117) 1996 LP1 11118 11119 Taro 011118 Category:Discoveries by Adrián Galád Category:Discoveries by Dušan Kalmančok Category:Named minor planets 19960809