(242450) 2004 QY2

Asteroid on an eccentric orbit October 2019 yes (242450) 2004 QY 2 #FFC2E0 SSS Siding Spring Obs. 20 August 2004 (242450) 2004 QY 2 ApolloNEOPHA 4 September 2017 (JD 2458000.5) 0 11.61 yr (4,242 days) 1.6013 AU 0.5666 AU 1.0840 AU 0.4773 1.13 yr (412 days) 123.98° 0.8733 ms / day 37.026° 295.31° 104.96° 0.0469 AU18.3 LD 2.914 0.084 km3.320 km 0.274 0.044 14.7 (242450) 2004 QY 2 is an asteroid on an eccentric orbit, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 3 km mi off 1 us in diameter. It was discovered on 20 August 2004 by the Siding Spring Survey at an apparent magnitude of 16.5 using the 0.5 m in on Uppsala Southern Schmidt Telescope. It is one of the largest potentially hazardous asteroids known to exist. Orbit and classification 2004 QY 2 orbits the Sun at a distance of 0.6–1.6 AU once every 14 months (412 days; semi-major axis of 1.08 AU). Its orbit has an eccentricity of 0.48 and an inclination of 37° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Siding Spring. The object is a member of the Apollo asteroids, the largest subgroup of near-Earth asteroids which cross the orbit of Earth. Unlike many other members of this dynamical group, 2004 QY 2 is not a Mars-crosser, as its aphelion is too small to cross the orbit of the Red Planet at 1.66 AU. Close approaches With an absolute magnitude of 14.7, 2004 QY 2 is one of the brightest potentially hazardous asteroids ever discovered (see PHA-list). It has an Earth minimum orbital intersection distance of 0.0469 AU km on off 3, which translates into 18.3 lunar distances. On 29 July 2012, it passed Earth at a distance of 0.4314 AU km mi on off. Sentry Risk Table Due to its originally estimated size of 5.5 kilometers, 2004 QY 2 was one of the largest objects to appear on the Sentry Risk Table. It was removed from the Sentry Risk Table on 25 August 2004. Physical characteristics According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, 2004 QY 2 has an albedo of 0.274, and it measures 2.914 and 3.320 kilometers in diameter, respectively. As of 2018, no rotational lightcurve of 2004 QY 2 has been obtained from photometric observations. The body's rotation period, shape and spin axis remain unknown. In addition, the body's spectral type has never been assessed. Numbering and naming This minor planet was numbered by the Minor Planet Center on 26 June 2006. As of 2018, it has not been named. References 30em 2016-04-01 last obs. JPL Small-Body Database Browser: 242450 (2004 QY2) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2242450 Jet Propulsion Laboratory 19 January 2018 242450 (2004 QY2) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=242450 19 January 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 25 February 2018 MPEC 2004-Q27 : 2004 QY2 (K04Q02Y) IAU Minor Planet Center 2004-08-22 https://www.minorplanetcenter.net/iau/mpec/K04/K04Q27.html 2012-06-17 List of the Potentially Hazardous Asteroids (PHAs) Minor Planet Center https://www.minorplanetcenter.net/iau/lists/t_phas.html 19 January 2018 JPL Small-Body Database Search Engine: PHAs and H < 15 (mag) JPL Solar System Dynamics http://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=pha;obj_kind=all;obj_numbered=all;OBJ_field=0;ORB_field=0;c1_group=OBJ;c1_item=Ai;c1_op=%3C;c1_value=15;table_format=HTML;max_rows=50;format_option=comp;c_fields=AcBhBgBjBiBnBsCkCqAi;.cgifields=format_option;.cgifields=obj_kind;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=ast_orbit_class;.cgifields=table_format;.cgifields=com_orbit_class&query=1&c_sort=AcA 19 January 2018 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 The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 6 A. Mainzer J. Bauer R. M. Cutri T. Grav J. Masiero R. Beck P. Clarkson T. Conrow J. Dailey P. Eisenhardt B. Fabinsky S. Fajardo-Acosta J. Fowler C. Gelino C. Grillmair I. Heinrichsen M. Kendall J. Davy Kirkpatrick F. Liu F. Masci H. McCallon C. R. Nugent M. Papin E. Rice D. Royer T. Ryan P. Sevilla S. Sonnett R. Stevenson D. B. Thompson S. Wheelock D. Wiemer M. Wittman E. Wright L. Yan September 2014 Initial Performance of the NEOWISE Reactivation Mission The Astrophysical Journal 792 1 14 2014ApJ...792...30M 10.1088/0004-637X/792/1/30 1406.6025 22 August 2004 Major News about Minor Objects hohmanntransfer http://www.hohmanntransfer.com/mn/0408/22.htm#bits 19 January 2018 5 November 2016 https://web.archive.org/web/20161105153448/http://www.hohmanntransfer.com/mn/0408/22.htm#bits dead Sentry: Earth Impact Monitoring – Removed Objects NASA/JPL CNEOS – Center for Near-Earth Object Studies https://cneos.jpl.nasa.gov/sentry/removed.html 19 January 2018 242450 19 January 2018 External links (242450) 2004 QY 2 at the European Asteroid Research Node, EARN Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) 242450 242450 2004QY2 242450 (242450) 2004 QY 2 242450 242450 242450 242450 20040820