2012 FC71

Asteroid February 2018 yes 2012 FC 71 #FFC2E0 2012 FC71 orbit.jpg 31 March 2012 Mt. Lemmon SurveyA. Boattini(unofficial credits) 2012 FC 71 NEO Aten Earth crosser 16 February 2017 (JD 2457800.5) 5 7 21 days 1.0750 AU 0.9008 AU 0.9879 AU 0.0882 0.98 yr (359 days) 150.11° 1.0038 ms / day 4.9430° 38.142° 348.30° 0.0566 AU (22.1 LD) 20–40 mA a none 25.2 2012 FC 71 is a small asteroid trapped in a Kozai resonance with the Earth.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 Discovery, orbit and physical properties It was first observed on 31 March 2012 by Andrea Boattini, observing for the Mt. Lemmon Survey.Discovery MPEC Its orbit is characterized by low eccentricity (0.088), low inclination (4.97º) and a semi-major axis of 0.9895 AU.MPC data on 2012 FC71 It is an Aten asteroid but also an Earth crosser. As of 21 April 2012 its orbit is based on 35 observations spanning a data-arc of 21 days. This short observation arc results in an orbit uncertainty of 7. It has not been seen since and is unlikely to be seen again for several decades. It will remain both very dim (around apparent magnitude 27), and close in the sky to the Sun (solar elongation of less than 90 degrees), making it impossible to observe with current ground based telescopes till the 2060s. A number of times during the decade it will again be visible in the night sky and at times be brighter than apparent magnitude 21, as when it was first observed. Kozai resonator and future orbital evolution 2012 FC 71 is locked in a Kozai resonance and as such it has a very slow orbital evolution and it will remain relatively unperturbed for hundreds of thousands of years. It had a close encounter with the Earth on 18 April 2012 at 0.076 AU when it was discovered and another on 17 May 2013 at 0.0581 AU, which was not observed. Origin It may have been originated within the Venus-Earth-Mars region or in the main asteroid belt like other Near-Earth Objects, then transitioned to an Amor-class asteroid before entering Earth's co-orbital region. See also 16em 3753 Cruithne 2001 GO 2 2002 AA 29 2003 YN 107 2006 JY 26 2009 SH 2 2010 SO 16 2013 BS 45 Notes A a none This is assuming an albedo of 0.20–0.04. References 30em 2012-04-21 last obs. JPL Small-Body Database Browser: 2012 FC71 http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012FC71 Jet Propulsion Laboratory 2 February 2017 2012 FC71 Minor Planet Center http://www.minorplanetcenter.net/db_search/show_object?object_id=2012+FC71 2 February 2017 Absolute Magnitude (H) NASA/JPL http://neo.jpl.nasa.gov/glossary/h.html https://web.archive.org/web/20010302182040/http://neo.jpl.nasa.gov/glossary/h.html dead 2 March 2001 2 February 2017 Further reading Secular perturbations of asteroids with high inclination and eccentricity Kozai, Y. 1962, Astronomical Journal, Vol. 67, p. 591 The Kozai resonance for near-Earth asteroids with semimajor axes smaller than 2AUJune 2017 InternetArchiveBot yes Michel, P., & Thomas, F. 1996, Astronomy and Astrophysics, Vol. 307, p. 310 https://archive.today/20130806141820/http://mnrasl.oxfordjournals.org/content/434/1/L1.abstract A resonant family of dynamically cold small bodies in the near-Earth asteroid belt de la Fuente Marcos, C., de la Fuente Marcos, R. 2013, Monthly Notices of the Royal Astronomical Society: Letters, Vol. 434, Issue 1, pp. L1-L5 External links List Of Aten Minor Planets, Minor Planet Center MPEC 2012-G13 : 2012 FC71, discovery Minor Planet Electronic Circular (MPEC) AstDys-2 on 2012 FC71 at AstDys NEODyS-2 on 2012 FC71 at NEODyS 2012FC71 2012FC71 # Category:Minor planet object articles (unnumbered) Category:Discoveries by Andrea Boattini Category:Discoveries by MLS Category:Earth-crossing asteroids 20120331