(154276) 2002 SY50

Asteroid April 2018 yes (154276) 2002 SY 50 #FFC2E0 LINEAR Lincoln Lab's ETS 30 September 2002 (154276) 2002 SY 50 ApolloNEOPHA 23 March 2018 (JD 2458200.5) 0 11.78 yr (4,304 d) 2.8793 AU 0.5297 AU 1.7045 AU 0.6892 2.23 yr (813 d) 305.15° 0.4429 ms / day 8.7443° 34.298° 99.395° 0.0027 AU (1.0519 LD) 0.897 km (calculated)1.060 0.346 km 4.823 hlcdb-Masi-2002 0.143 0.1730.20 (assumed) KS (assumed) 17.0017.6 (154276) 2002 SY 50 is a stony asteroid on a highly eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 1.1 km mi off 1 us in diameter. It was discovered on 30 September 2002, by astronomers with the Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. The K-type asteroid has a rotation period of 4.8 hours.lcdb-Masi-2002 It will make a close encounter with Earth on 30 October 2071. Orbit and classification 2002 SY 50 is a member of the Earth-crossing group of Apollo asteroids, the largest group of near-Earth objects with approximately 10 thousand known members. It orbits the Sun at a distance of 0.53–2.88 AU once every 2 years and 3 months (813 days; semi-major axis of 1.7 AU). Its orbit has an eccentricity of 0.69 and an inclination of 9° with respect to the ecliptic. Due to its large aphelion of 2.88 AU, it also crosses the orbit of Mars at 1.66 AU. The body's observation arc begins one month prior to its official discovery observation with its first observation by the NEAT program at Palomar Observatory in August 2002. Close approaches The asteroid has an Earth minimum orbital intersection distance of 0.0027 AU km mi on off 3, which corresponds to 1.05 lunar distances and makes it a potentially hazardous asteroid due to its sufficiently large size. In November 1933, it approached Earth at a nominal distance of 0.098 AU LD on, and in November 2002 at 0.084 AU LD on. Its closest near-Earth encounter is predicted to occur on 30 October 2071, at a distance of 0.0088 AU LD on only (see table). Physical characteristics Photometry by the Sloan Digital Sky Survey has characterized 2002 SY 50 as an uncommon K-type asteroid, which is typically seen among members of the Eos family in the asteroid belt.23 Rotation period In October 2002, a rotational lightcurve of this asteroid was obtained from photometric observations by Italian astronomer Gianluca Masi at the Campo Catino Astronomical Observatory 468. Lightcurve analysis gave a well-defined rotation period of 4.823 hours with a brightness amplitude of 0.52 magnitude (U=3).lcdb-Masi-2002 Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, this asteroid measures 1.06 kilometers in diameter and its surface has an albedo of 0.14, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 0.897 kilometers based on an absolute magnitude of 17.6. Numbering and naming This minor planet was numbered by the Minor Planet Center on 2 April 2007 (M.P.C. 59337). As of 2018, it has not been named. Notes lcdb-Masi-2002 Lightcurve plot of (154276) 2002 SY50 from October 2002. Rotation period 4.823 hours with a brightness amplitude of 0.52 mag. Quality code of 3. Summary figures at the LCDB. References 30em 2014-06-07 last obs. JPL Small-Body Database Browser: 154276 (2002 SY50) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2154276 Jet Propulsion Laboratory 20 April 2018 Close-Approach Data, JPL Small-Body Database Browser: 154276 (2002 SY50) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2154276;;cad=1#cad Jet Propulsion Laboratory 20 April 2018 154276 (2002 SY50) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=154276 20 April 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 20 April 2018 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 119280014 154276 20 April 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 9341381 B. Carry E. Solano S. Eggl F. E. DeMeo April 2016 Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry Icarus 268 340–354 2016Icar..268..340C 10.1016/j.icarus.2015.12.047 1601.02087 119258489 External links List of the Potentially Hazardous Asteroids (PHAs), Minor Planet Center PHA Close Approaches To The Earth, Minor Planet Center 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 154276 154276 2002SY50 2154276 154276 (154276) 2002 SY 50 154276 154276 154276 20020930