2003 YN107

Near-Earth asteroid February 2018 yes #FFC2E0 2003 YN 107 LINEAR 20 December 2003 NEO Aten 467 days (1.28 yr) 1 21 November 2025 (JD 2461000.5) 0.988840 AU Gm on 0.975046 AU Gm on 1.00263 AU Gm on on 0.0139494 0.98 yr (359.2 d) 4.32089° 264.36698° 87.55338° 186.0344° 1.00234°/day 29.82 km/s 0.0048282 AU km on 10–30 m 26.5 2003 YN 107 is a tiny asteroid, classified as a near-Earth object of the Aten group moving in a 1:1 mean-motion resonance with Earth. Because of that, it is in a co-orbital configuration relative to Earth. Discovery, orbit and physical properties 2003 YN 107 was discovered by the Lincoln Near Earth Asteroid Research (LINEAR) system in orbit around the Sun on 20 December 2003. Its diameter is approximately 10 to 30 metres. The object is on NASA's Earth Close Approach list, and is estimated to miss Earth by 0.01 AU. It revolves around the Sun on an Earth-like, almost circular, orbit. Its orbital period of 363.846 days also is very close to the sidereal year. Co-orbital with Earth and orbital evolution From approximately 1997 to 2006, the asteroid remained within 0.1 AU km mi on off of Earth and it appeared to slowly orbit Earth. However, 2003 YN 107 is no second moon, as it is not bound to Earth. It is the first discovered member of a postulated group of co-orbital objects, or quasi-satellites, which show these path characteristics. Other members of this group include 10563 Izhdubar, 54509 YORP, (66063) 1998 RO 1, (85770) 1998 UP 1, and 85990 (85990) 1999 JV 6. Before 1996, the asteroid had been on a so-called horseshoe orbit around the Sun, along the Earth's orbit. After 2006, it had regained such an orbit. This makes it very similar to 2002 AA 29, which will become a quasi-satellite of Earth in approximately 600 years. left horizontal 300 Animation of 2003 YN 107 orbit from 1900-2100 Animation of 2003 YN107 orbit 1900-2100.gif Relative to Sun and Earth Animation of 2003 YN107 orbit around Earth 1900-2100.gif Around Earth Animation of 2003 YN107 orbit around Sun 1900-2100.gif Around Sun Yellow Sun RoyalBlue EarthMagenta 2003 YN 107 See also 30em Arjuna asteroid Natural satellite Quasi-satellite 3753 Cruithne 6Q0B44E 2001 GO 2 2002 AA 29 2006 JY 26 2006 RH 120 2009 SH 2 2010 SO 16 2012 FC 71 2013 BS 45 2016 HO 3 References http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2003%20YN107 JPL Small-Body Database Browser: (2003 YN107) Jet Propulsion Laboratory 30 March 2016 Discovery of Earth's quasi-satellite M. Connors Veillet C. Brasser R. Wiegert P. Chodas P. Mikkola S. Innanen K. August 2004 Meteoritics & Planetary Science 39 8 1251–1255 10.1111/j.1945-5100.2004.tb00944.x 2004M&PS...39.1251C free Transient co-orbital asteroids R. Brasser Innanen K. A. Connors M. Veillet C. Wiegert P. Mikkola S. Chodas P. W. September 2004 Icarus 171 1 102–109 10.1016/j.icarus.2004.04.019 2004Icar..171..102B A resonant family of dynamically cold small bodies in the near-Earth asteroid belt C. de la Fuente Marcos de la Fuente Marcos R. July 2013 Monthly Notices of the Royal Astronomical Society: Letters 434 1 L1–L5 10.1093/mnrasl/slt062 free 1305.2825 2013MNRAS.434L...1D External links MPEC 2003-Y76 : 2003 YN107 (Discovery MPEC) NASA's Near-Earth Object close approach tables Corkscrew Asteroid, Tony Phillips, Science@NASA, 9 June 2006. Horseshoe asteroids and quasi-satellites in Earth-like orbits 2003YN107 2003YN107 # # Category:Minor planet object articles (unnumbered) 20031220 Category:Horseshoe orbit