2013 BS45

Asteroid February 2018 yes #FFC2E0 2013 BS 45 James V. Scotti (Spacewatch) 20 January 2013 2013 BS 45 Aten NEO Earth crosser 13 January 2016 (JD 2457400.5) 1.0758430 AU Gm on on 0.9093608 AU Gm on 0.9926019 AU Gm on 0.0838615 0.99 yr (361.2 d) 0.7726189° 83.40080° 150.3038° 257.52229° 20–40 mA a none 25.9 0.9966471 ms /day 375 days (1.03 yr) 0 0.0114221 AU Gm on 3.89526 AU Gm on 2013 BS 45 is a horseshoe companion to the Earth like 3753 Cruithne.A resonant family of dynamically cold small bodies in the near-Earth asteroid belt Carlos de la Fuente Marcos de la Fuente Marcos Raúl July 2013 Monthly Notices of the Royal Astronomical Society: Letters 434 1 L1–L5 10.1093/mnrasl/slt062 free 1305.2825 2013MNRAS.434L...1D Like Cruithne, it does not orbit the Earth in the normal sense and at times it is on the other side of the Sun, yet it still periodically comes nearer to the Earth in sort of halo orbit before again drifting away. While not a traditional natural satellite, it does not quite have normal heliocentric orbit either and these are sometimes called quasi-satellites or horseshoe orbits. Discovery, orbit and physical properties 2013 BS 45 was discovered by James V. Scotti on 20 January 2013, observing for the Spacewatch project from Kitt Peak (KPNO).Discovery MPEC Its orbit is characterized by low eccentricity (0.084), low inclination (0.77º) and a semi-major axis of 0.993 AU; it is the most Earth-like among those of asteroids moving in Earth-like orbits. Upon discovery, it was classified as an Aten asteroid but also an Earth crosser by the Minor Planet Center. Its orbit is well determined; as of 26 August 2015, its orbit is based on 96 observations spanning a data-arc of 375 days. 2013 BS 45 has an absolute magnitude of 25.9 which gives a characteristic diameter of 30 m. Radar observations indicate that it may be a very rapid rotator with a period of just a few minutes. Horseshoe companion to the Earth and orbital evolution Recent calculations indicate that it follows a horseshoe orbit with respect to the Earth. Its orbital evolution is highly chaotic and its orbit is difficult to predict beyond a few thousand years. As for the available data, it had its closest encounter ever with Earth on 12 February 2013 at 0.013 AU, closer than in 1934, the previously closest approach at 0.014 AU. The next approach closer than 0.020 AU will take place on 2 September 2090 at 0.016 AU. Its orbit matches the expected properties of that of an object in the Arjuna class.Geometric characterization of the Arjuna orbital domain Carlos de la Fuente Marcos de la Fuente Marcos Raúl February 12, 2015 Astronomische Nachrichten 336 1 5–22 10.1002/asna.201412133 1410.4104 2015AN....336....5D Origin 2013 BS 45 may have originated within the Venus-Earth-Mars region; alternatively, it may have come from 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 3753 Cruithne 2001 GO 2 2002 AA 29 2003 YN 107 2006 JY 26 2009 SH 2 2010 SO 16 2012 FC 71 Orbital resonance Notes A a none This is assuming an albedo of 0.20–0.04. References http://www.minorplanetcenter.net/db_search/show_object?object_id=2013+BS45&commit=Show MPC 2013 BS45 last obs: 2014-01-30.0 26 August 2015 2013 BS45 3625129 3 April 2016(last obs: 2014-01-30) 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 Absolute-magnitude conversion table (H) NASA 27 August 2015 https://newton.spacedys.com/neodys2/index.php?pc=1.1.0&n=2013+BS45 NEODyS-2, Near Earth Objects Dynamic Site 2013 BS45 – Summary 11 May 2013 https://newton.spacedys.com/astdys/index.php?pc=1.1.0&n=2013+BS45 AstDys-2, Asteroids Dynamic Site 2013 BS45 – Summary 11 May 2013 http://www.minorplanetcenter.org/iau/lists/Atens.html List Of Aten Minor Planets Minor Planet Center 27 August 2015 Further reading 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, Carlos; de la Fuente Marcos, Raúl (2013), Monthly Notices of the Royal Astronomical Society: Letters, Vol. 434, Issue 1, pp. L1-L5. Geometric characterization of the Arjuna orbital domain de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (2015), Astronomische Nachrichten, Vol. 336, Issue 1, pp. 5–22. External links 2013 BS 45 data at MPC MPEC 2013-B72 : 2013 BS45 (Discovery MPEC) 2013 BS 45 Goldstone Radar Observations Planning https://archive.today/20130616102428/http://www.gps.caltech.edu/uploads/File/People/awaszcza/03.png 2013 BS 45 imaged by the Palomar Transient Factory survey el The “Horseshoe” Orbit of Near-Earth Object 2013 BS 45 by D. R. Adamo 2013+BS45 2013BS45 # Category:Minor planet object articles (unnumbered) # # Category:Earth-crossing asteroids # 20130120 Category:Horseshoe orbit