1708 Pólit

Very dark asteroid October 2019 yes 1708 Pólit #D6D6D6 30 November 1929 J. Comas Solà Fabra Obs. (1708) Pólit 1929 XA1934 XF1939 YB Isidre Pòlit(Catalan astronomer) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 87.51 yr (31,964 days) 3.8064 AU 2.0159 AU 2.9111 AU 0.3075 4.97 yr (1,814 days) 213.43° 0.1984 ms / day 6.0445° 192.21° 248.96° 27.46 1.30 km28.06 6.19 km28.706 0.057 km29.30 1.7 km30.282 0.071 km33.44 1.53 km 7.5080 0.0002 h7.5085 0.001 h7.520 0.002 h 0.035 0.0040.0350 0.00550.0392 0.0050.04 0.010.042 0.008 C 11.7011.811.86 1708 Pólit, provisional designation 1929 XA, is a very dark asteroid from the outer region of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 30 November 1929, by Spanish astronomer of Catalan origin Josep Comas i Solà at the Fabra Observatory in Barcelona, and was later named after Catalan astronomer Isidre Pòlit i Boixareu. Orbit and classification Pólit orbits the Sun in the outer main-belt at a distance of 2.0–3.8 AU once every 4 years and 12 months (1,814 days). Its orbit has an eccentricity of 0.31 and an inclination of 6° with respect to the ecliptic. A first precovery was taken at Lowell Observatory in Flagstaff, extending the body's observation arc by 3 days prior to its official discovery observation. Physical characteristics The asteroid has been characterized as a C-type asteroid. 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, Pólit measures between 27.46 and 33.44 kilometers in diameter and its surface has a low albedo between 0.035 and 0.042. The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS, that is, an albedo of 0.0392 and a diameter of 29.30 kilometers based on an absolute magnitude of 11.8. Lightcurves Between 2005 and 2014, a large number of rotational lightcurves of Pólit were obtained from photometric observations by American astronomer Maurice Clark at the Preston Gott and McDonald Observatories. Lightcurve analysis gave a rotation period of 7.5080 to 7.5085 hours with a brightness variation between 0.40 and 0.50 magnitude (U=3/3-). Clark also derived a spin axis of (2.1°, 47.5°) in ecliptic coordinates (λ, β) (Q=2). In addition, astronomer Raymond Poncy measured a period of 7.520 hours with an amplitude of 0.30 magnitude (U=3). Naming This minor planet was named in memory of the Fabra Observatory's second director of the astronomical section, Isidre Pòlit i Boixareu (1880–1958), who was an assiduous observer of minor planets and comets. The official naming citation was published by the Minor Planet Center on 1 June 1980 (M.P.C. 5357). References 30em 2017-06-03 last obs. JPL Small-Body Database Browser: 1708 Polit (1929 XA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001708 https://web.archive.org/web/20200918071543/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001708 dead 18 September 2020 Jet Propulsion Laboratory 4 August 2017 Dictionary of Minor Planet Names – (1708) Pólit Schmadel Lutz D. Springer Berlin Heidelberg 136 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1709 (1708) Pólit 1708 Polit (1929 XA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1708 4 August 2017 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 4 August 2017 Asteroids and comets rotation curves – (1708) Pólit Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001708 4 August 2017 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001708 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 4 August 2017 1708 4 August 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 4 August 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 Clark, Maurice October 2011 Asteroid Lightcurves from the Preston Gott and McDonald Observatories http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38..187C The Minor Planet Bulletin 38 4 187–189 1052-8091 2011MPBu...38..187C 4 August 2017 Clark, Maurice July 2015 Asteroid Photometry from the Preston Gott Observatory http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015MPBu...42..163C The Minor Planet Bulletin 42 3 163–166 1052-8091 2015MPBu...42..163C 4 August 2017 Clark, Maurice January 2016 Shape Modelling of Asteriods [sic] 1708 Polit, 2036 Sheragul, and 3015 Candy http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016MPBu...43...80C The Minor Planet Bulletin 43 1 80–86 1052-8091 2016MPBu...43...80C 4 August 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/20241208174218/http://obswww.unige.ch/~behrend/page_cou.html 8 December 2024 – Observatoire de Geneve, Raoul Behrend 1708 1707 Chantal 1708 1709 Ukraina 001708 Category:Discoveries by Josep Comas Solà Category:Named minor planets 19291201