2014 FZ71

Trans-Neptunian object (690420) 2014 FC 72 and 2014 FE 72 December 2018 yes 2014 FZ 71 #C2E0FF CTIO CTIO(first observed only) 24 March 2014 2014 FZ 71 TNO detached SDO distant 27 April 2019 (JD 2458600.5) 6 1.96 yr (716 d) 95.791 AU 55.849 AU 75.820 AU 0.2634 660.21 yr (241,142 d) 349.80° 0.0015 ms / day 25.506° 306.01° 244.94° 125 25 km 182 km 185 km 0.08 (assumed) 0.09 (assumed) 24.61 6.9 2014 FZ 71 is a trans-Neptunian object, classified as a scattered and detached object, located in the outermost region of the Solar System. It was first observed on 24 March 2014, by a team led by American astronomer Scott Sheppard at the Cerro Tololo Inter-American Observatory in Chile. With its perihelion of almost 56 AU, it belongs to a small and poorly understood group of very distant objects with moderate eccentricities. The object is not a dwarf planet candidate as it only measures approximately 150 km mi off us in diameter. Discovery 2014 FZ 71 was first observed on 24 March 2014 by a team of astronomers led by Scott Sheppard of the Carnegie Institution for Science as part of the survey for distant Solar System objects beyond the Kuiper Cliff using the new wide-field cameras on the Subaru and Cerro Tololo Inter-American Observatory (CTIO) telescopes. Orbit and classification thumb|left|200px|The object is located in the "gap", a poorly understood region. 2014 FZ 71 orbits the Sun at a distance of 55.8–95.8 AU once every 660 years and 3 months (241,142 days; semi-major axis of 75.82 AU). Its orbit has a moderate eccentricity of 0.26 and an inclination of 26° with respect to the ecliptic. The object belongs to the same orbital group as 2004 XR 190 ("Buffy"), 2014 FC 72, 2015 FJ 345 and 2015 KQ 174 (also see diagram). With an orbital period of 660 years, it seems to be resonant trans-Neptunian objects in a 1:4 resonance with Neptune, as are 2003 LA 7 and 2011 UP 411, but with a lower eccentricity and therefore higher perihelion. Considered a scattered and detached object, 2014 FZ 71 is particularly unusual as it has an unusually circular orbit for a scattered-disc object (SDO). Although it is thought that traditional scattered-disc objects have been ejected into their current orbits by gravitational interactions with Neptune, the low eccentricity of its orbit and the distance of its perihelion (SDOs generally have highly eccentric orbits and perihelia less than 38 AU) seems hard to reconcile with such celestial mechanics. This has led to some uncertainty as to the current theoretical understanding of the outer Solar System. The theories include close stellar passages, unseen planet/rogue planets/planetary embryos in the early Kuiper belt, and resonance interaction with an outward-migrating Neptune. The Kozai mechanism is capable of transferring orbital eccentricity to a higher inclination. Physical characteristics 2014 FZ 71 has a diameter estimated between 125 and 185 kilometers, roughly a quarter the size of 2004 XR 190 ("Buffy") which is estimated at 500 km mi, roughly a quarter the size of Pluto. It is therefore not a dwarf planet candidate. References 30em 2016-03-09 last obs. JPL Small-Body Database Browser: (2014 FZ71) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3753720 Jet Propulsion Laboratory 12 December 2018 2014 FZ71 Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=2014+FZ71 12 December 2018 2014 FZ71 – Ephemerides AstDyS-2, Asteroids Dynamic Site, Department of Mathematics, University of Pisa, Italy https://newton.spacedys.com/astdys/index.php?pc=1.1.3.0&n=2014FZ71 12 December 2018 List of Known Trans-Neptunian Objects Johnston's Archive 7 October 2018 Johnston Wm. Robert http://www.johnstonsarchive.net/astro/tnoslist.html 12 December 2018 How many dwarf planets are there in the outer solar system? California Institute of Technology Brown Michael E. http://web.gps.caltech.edu/~mbrown/dps.html 12 December 2018 Jewitt, David, Morbidelli, Alessandro, & Rauer, Heike. (2007). Trans-Neptunian Objects and Comets: Saas-Fee Advanced Course 35. Swiss Society for Astrophysics and Astronomy. Berlin: Springer. 3-540-71957-1. Patryk Sofia Lykawka Tadashi Mukai July 2007 Dynamical classification of trans-neptunian objects: Probing their origin, evolution, and interrelation Icarus 189 1 213–232 2007Icar..189..213L 10.1016/j.icarus.2007.01.001 R. L. Allen B. Gladman J. J. Kavelaars J.-M. Petit J. W. Parker P. Nicholson March 2006 Discovery of a Low-Eccentricity, High-Inclination Kuiper Belt Object at 58 AU The Astrophysical Journal 640 1 L83–L86 2006ApJ...640L..83A 10.1086/503098 astro-ph/0512430 15588453 (Discovery paper) Scott S. Sheppard Chadwick Trujillo David J. Tholen July 2016 Beyond the Kuiper Belt Edge: New High Perihelion Trans-Neptunian Objects with Moderate Semimajor Axes and Eccentricities The Astrophysical Journal Letters 825 1 7 2016ApJ...825L..13S 10.3847/2041-8205/825/1/L13 1606.02294 118630570 free External links List Of Centaurs and Scattered-Disk Objects, Minor Planet Center List of Known Trans-Neptunian Objects, Johnston's Archive 2014FZ71 3753720 # Category:Minor planet object articles (unnumbered) # 20140324