(419624) 2010 SO16

Asteroid September 2020 yes (419624) 2010 SO 16 #FFC2E0 2010SO16-orbit.png Orbit with inner Solar System WISE Low Earth orbit 17 September 2010 (419624) 2010 SO 16 ApolloNEOPHA 4 September 2017 (JD 2458000.5) 0 5.28 yr (1,928 days) 1.0785 AU 0.9272 AU 1.0028 AU 0.0754 1.00 yr (367 days) 173.30° 0.9814 ms / day 14.520° 40.397° 108.99° 0.0299 AU (11.6 LD) 0.357 0.126 km 0.084 0.057 20.5 (419624) 2010 SO 16 is a sub-kilometer asteroid in a co-orbital configuration with Earth, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group. It was discovered by the Wide-field Infrared Survey Explorer space telescope (WISE) on 17 September 2010. Description The orbit was described by Apostolos Christou and David Asher at the Armagh Observatory in Northern Ireland. The object has an absolute magnitude of 20.5. Observations by the discovering WISE telescope give a diameter of 357 meters and an albedo of 0.084. 2010 SO 16 has a horseshoe orbit that allows it to stably share Earth's orbital neighborhood without colliding with it. It is one of a handful of known asteroids with an Earth-following orbit, a group that includes 3753 Cruithne, and the only known asteroid in an horseshoe orbit with Earth. It is, however, neither an Aten asteroid nor an Apollo asteroid because the semi-major axis of its orbit is neither less than nor greater than 1 AU, but oscillates between approximately 0.996 and 1.004 AU, with a period of about 350 years. In its ~350 yr horseshoe cycle, it never approaches Earth more closely than about 0.15 AU, alternately trailing and leading. According to various simulations 2010 SO 16 will remain in this orbit for at least 120,000 years and possibly for more than a million years, which is unusually stable compared to other similar objects. One reason for this stability is its low orbital eccentricity, . A precovery of 2010 SO 16 may have been located in a 2005 Spitzer Space Telescope image. left horizontal 235 Animation of (419624) 2010 SO 16 orbit from 1600 to 2500 Animation of (419624) 2010 SO16 orbit.gif Relative to Sun and Earth Animation of (419624) 2010 SO16 orbit around Earth.gif Around Earth - Polar view Animation of (419624) 2010 SO16 orbit around Earth - Equatorial view.gif Around Earth - Equatorial view Animation of (419624) 2010 SO16 orbit around Sun.gif Around Sun Yellow Sun RoyalBlue EarthMagenta (419624) 2010 SO 16 See also 3753 Cruithne – a horseshoe companion of the Earth 2006 RH 120 – a small asteroid that sometimes temporarily gets caught in Earth orbit 2002 AA 29 – a horseshoe companion of the Earth Natural satellite 2001 GO 2 2002 AA 29 2003 YN 107 2006 JY 26 2012 FC 71 Orbital resonance References 2015-12-28 last obs. JPL Small-Body Database Browser: 419624 (2010 SO16) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2419624;cad=1 Jet Propulsion Laboratory 6 February 2018 419624 (2010 SO16) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=419624 6 February 2018 New Tool Finds Buried Treasure in Spitzer Archives NASA/JPL 2014-04-03 http://www.spitzer.caltech.edu/news/1635-feature14-07-New-Tool-Finds-Buried-Treasure-in-Spitzer-Archives 2014-04-25 A. A. Christou D. J. Asher July 2011 A long-lived horseshoe companion to the Earth Monthly Notices of the Royal Astronomical Society 414 4 2965–2969 2011MNRAS.414.2965C 10.1111/j.1365-2966.2011.18595.x free 1104.0036 13832179 6 A. Mainzer T. Grav J. Masiero J. Bauer R. M. Cutri R. S. McMillan C. R. Nugent D. Tholen R. Walker E. L. Wright November 2012 Physical Parameters of Asteroids Estimated from the WISE 3-Band Data and NEOWISE Post-Cryogenic Survey The Astrophysical Journal Letters 760 1 6 2012ApJ...760L..12M 10.1088/2041-8205/760/1/L12 1210.0502 41459166 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 Asteroid Discovered in Horseshoe-Shaped Orbit, The Physics arXiv Blog, Technology Review, 4/05/2011 External links 419624 419624 2010SO16 419624 419624 (419624) 2010 SO 16 419624 419624 419624 419624 419624 20100917 Category:Horseshoe orbit