(190166) 2005 UP156

Near-Earth asteroid November 2018 yes (190166) 2005 UP 156 #FFC2E0 2005 UP156 2017Jun10.png Radar image of the 2005 UP 156 binary system taken by the Arecibo Observatory in June 2017 Spacewatch Kitt Peak National Obs. 31 October 2005 (190166) 2005 UP 156 NEOAmor 4 September 2017 (JD 2458000.5) 0 14.80 yr (5,405 days) 3.1090 AU 1.1221 AU 2.1155 AU 0.4696 3.08 yr (1,124 days) 18.539° 0.3203 ms / day 4.2083° 193.41° 91.156° 0.1316 AU (51.3 LD) 1 1.045 0.025 km1.08 km (calculated) 1.8 g/cm3 40.5 0.1 hLightcurve-plots40.542 0.003 h40.572 0.003 hLightcurve-plotslcdb-Warner 2017q40.6 0.5 h 0.20 (assumed)0.234 0.033 S 17.117.2 (190166) 2005 UP 156 is a stony asteroid and binary system, classified as a near-Earth object of the Apollo group, approximately 1 kilometer in diameter. It was discovered on 31 October 2005, by astronomers of the Spacewatch survey at the Kitt Peak National Observatory in Arizona, United States. Its minor-planet moon with an orbital period of 40.25 hours was discovered in 2017. Orbit and classification 2005 UP 156 is an Amor asteroid that approaches the orbit of Earth from beyond but does not cross it. It orbits the Sun at a distance of 1.1–3.1 AU once every 3 years and 1 month (1,124 days). Its orbit has an eccentricity of 0.47 and an inclination of 4° with respect to the ecliptic. The body's observation arc begins with a precovery image taken by NEAT at Palomar Observatory in November 2002, almost four years prior to its official discovery observation. Due to its high eccentricity, the asteroid is also a Mars-crosser, which means that it also crosses the orbit of Mars (at 1.666 AU). Close approaches This near-Earth object has an Earth minimum orbital intersection distance of 0.1316 AU km on 3 which corresponds to 51.3 lunar distances. On 10 July 2017, it approached Earth to a distance of 0.133 AU and will make its next close approach at 0.128 AU in July 2057. Physical characteristics 2005 UP 156 is an assumed S-type asteroid. Rotation period Since 2004, several rotational lightcurves of 2005 UP 156 were obtained from photometric observations by French amateur astronomers David Romeuf, René Roy, as well as by American astronomer Brian Warner. Analysis of the best-rated lightcurve gave a rotation period of 40.542 hours with a brightness variation of 1.1 magnitude (U=2/3/3/2).Lightcurve-plotslcdb-Warner 2017q While not being a slow rotator, 2005 UP 156 has a much longer rotation period than most asteroids, especially for it nearly sub-kilometer size. The lightcurve's high brightness amplitude also indicates that the body has a non-spheroidal shape. Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, 2005 UP 156 measures 1.045 kilometers in diameter and its surface has an albedo of 0.234, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 1.08 kilometers based on an absolute magnitude of 17.2. The asteroid has an estimated density of 1.8 g/cm3. Binary system In May 2017, photometric observations by Brian Warner and Alan Harris revealed that 2005 UP 156 is a synchronous binary system with a secondary component orbiting around the system barycenter every 40.572 hours.lcdb-Warner 2017q The secondary has been confirmed by radar observations. Numbering and naming This minor planet was numbered by the Minor Planet Center on 19 August 2008. As of 2018, it has not been named. Notes lcdb-Warner 2017q Warner (2017q): publication not yet indexed at ADS. Binary asteroid. Rotation period 40.572 0.003 hours with a brightness amplitude of 1.35 0.05 mag. Quality Code of 3. Summary figures for (190166) at the LCDB Lightcurve-plots Lightcurve plots from 2014 and 2017 by Brian D. Warner, Palmer Divide Station at the Center for Solar System Studies (CS3). Summary figures at the LCDB References 30em 2017-09-11 last obs. JPL Small-Body Database Browser: 190166 (2005 UP156) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2190166;cad=1 Jet Propulsion Laboratory 13 September 2017 190166 (2005 UP156) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=190166 13 September 2017 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 24 February 2018 Asteroids and comets rotation curves – (190166) 2005 UP156 Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page5cou.html#0j0166 13 September 2017 https://web.archive.org/web/20181111134209/http://obswww.unige.ch/~behrend/page5cou.html#0j0166 11 November 2018 dead Robert Johnston (190166) 2005 UP156 johnstonsarchive.net 14 June 2017 http://www.johnstonsarchive.net/astro/astmoons/am-190166.html 13 September 2017 190166 13 September 2017 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 13 September 2017 Warner, Brian D. January 2015 Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 June–October The Minor Planet Bulletin 42 1 41–53 32457969 7249511 1052-8091 2015MPBu...42...41W B. D. Warner A. W. Harris May 2017 (190166) 2005 UP156 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2017CBET.4394....1W Central Bureau Electronic Telegrams 4394 1 2017CBET.4394....1W 13 September 2017 External links (190166) 2005 UP156 https://web.archive.org/web/20170914081533/https://asteroidtracker.lco.global/asteroid/8/ 14 September 2017 at Las Cumbres Observatory (190166) 2005 UP156 at E.A.R.N. Asteroids with Satellites, Johnston's Archive Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) 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 190166 190166 2005UP156 190166 (190166) 2005 UP 156 190166 190166 190166 190166 20051031