(523671) 2013 FZ27

Kuiper Belt object October 2019 yes (523671) 2013 FZ 27 #C2E0FF Scott SheppardChad Trujillo Cerro Tololo (807) 16 March 2013 (523671) 2013 FZ 27 TNOdistantother TNO 27 April 2019 (JD 2458600.5) 1 17.07 yr (6,234 d) 20 February 2001 58.713 AU 37.574 AU 48.143 AU 0.2196 334.05 yr (122,013 d) 282.75° 0.0030 ms / day 14.059° 285.22° 341.93° 0 561 km (est.)584 km335 - 748 km (calculated, using H=4.5 and albedo = 0.25 ~ 0.05) 0.09 (est.) 4.244.6 (523671) 2013 FZ 27 is a trans-Neptunian object located in the Kuiper belt in the outermost region of the Solar System, approximately 570 km mi off 2 us in diameter. It was discovered on 16 March 2013, by American astronomers Scott Sheppard and Chad Trujillo at the CTIO in Chile. 2013 FZ 27 has not yet been imaged by high-resolution telescopes, so it has no known moons. The Hubble Space Telescope is planned to image it in 2026, which should determine if it has significantly sized moons. A Search For The Moons of Mid-Sized TNOs https://www.stsci.edu/hst-program-info/download/hst/pdf/18010/ Benjamin Proudfoot Mikulski Archive for Space Telescopes Space Telescope Science Institute August 2025 HST Proposal 18010 Cycle 33 2025-08-17 Numbering and naming This minor planet was numbered by the Minor Planet Center on 25 September 2018 (M.P.C. 111778). It was given the wrong discovery credit in the initial MPC Circular, and the MPC issued an Errata on 6 April 2019 on MPC 112429 correcting the mistake and giving credit to Scott S. Sheppard and Chad Trujillo. As of June 2025, it has not been named. Observations 2013 FZ 27 was announced on 2 April 2014, when American astronomers Scott Sheppard and Chad Trujillo at the CTIO in Chile published their observations in a Minor Planet Electronic Circular. At the time the object was at 49 AU from the Sun and had an apparent magnitude of 21.1. 2013 FZ 27's observation arc begins with a precovery taken by the Sloan Digital Sky Survey on 20 February 2001, over 10 years before its discovery observation at Cerro Tololo. The Pan-STARRS-1 survey at the Haleakala Observatory also found precovery observations. Orbit and classification 2013 FZ 27 is a trans-Neptunian object (TNO), located beyond the orbit of Neptune (30.1 AU). Johnston's Archive classifies it as an unspecific "other TNO", meaning that the minor planet is neither a resonant nor a classical TNO. Taking the mean of the two magnitudes, and using the standard 0.25 ~ 0.05 range for minor planets of unknown albedo, a wide 335-to-748 km spread can be estimated for the diameter. 2013 FZ 27 orbits the Sun at a distance of 37.6–58.7 AU once every 334 years and 1 month (122,013 days; semi-major axis of 48.14 AU). Its orbit has an eccentricity of 0.22 and an inclination of 14° with respect to the ecliptic. Physical characteristics Diameter and albedo According to Michael Brown and Johnston's Archive, 2013 FZ 27 measures 561 and 584 kilometers in diameter, based on an absolute magnitude of 4.6 and 4.4assuming the JA uses JPL/MPC data as seems to be the general case; the estimate correlates with a generic mathematical derivation respectively. Both sources assume a standard albedo of 0.09 for the body's surface. As of 2018, no physical characteristics have been determined from photometric observations. The body's rotation period, pole and shape remain unknown. Based on its size of 561 and 584 kilometers, it most likely belongs to the proposed class of "mid-sized" TNOs between 400 and 1000 km mi in diameter, which are believed to represent the transition between small, low-density TNOs and large, high-density dwarf planets.1 Planetary scientists have hypothesized that mid-sized TNOs should have highly porous and unheated interiors, because TNOs in this size range (namely Uni and Gǃkúnǁʼhòmdímà) have been found to have low densities around 1 g/cm3. Notes References 30em 2018-03-17 last obs. JPL Small-Body Database Browser: 523671 (2013 FZ27) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2523671 Jet Propulsion Laboratory 7 October 2018 523671 (2013 FZ27) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=523671 15 August 2019 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 7 October 2018 List of Known Trans-Neptunian Objects Johnston's Archive 30 September 2018 Johnston Wm. Robert http://www.johnstonsarchive.net/astro/tnoslist.html 7 October 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 7 October 2018 List Of Transneptunian Objects Minor Planet Center https://minorplanetcenter.net/iau/lists/TNOs.html 7 October 2018 MPEC 2014-G07 : 2013 FZ27 Minor Planet Electronic Circular – Minor Planet Center 2 April 2014 https://www.minorplanetcenter.net/mpec/K14/K14G07.html 7 October 2018 523671 7 October 2018 Asteroid (523671) 2013 FZ27 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=2013+FZ27 7 October 2018 Dan Bruton Conversion of Absolute Magnitude to Diameter for Minor Planets http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html Stephen F. Austin State University, College of Sciences and Mathematics, Department of Physics, Engineering and Astronomy 15 August 2019 https://web.archive.org/web/20110723191750/http://www.physics.sfasu.edu/astro/asteroids/sizemagnitude.html 23 July 2011 W. M. Grundy K. S. Noll M. W. Buie S. D. Benecchi D. Ragozzine H. G. Roe The Mutual Orbit, Mass, and Density of Transneptunian Binary Gǃkúnǁʼhòmdímà ((229762) 2007 UK 126) http://www2.lowell.edu/users/grundy/abstracts/preprints/2019.G-G.pdf Icarus December 2019 334 30–38 10.1016/j.icarus.2018.12.037 2019Icar..334...30G 126574999 7 April 2019 2 May 2026 https://web.archive.org/web/20190407045339/http://www2.lowell.edu/~grundy/abstracts/preprints/2019.G-G.pdf dead Scott Sheppard Yanga Fernandez Arielle Moullet The Albedos, Sizes, Colors and Satellites of Dwarf Planets Compared with Newly Measured Dwarf Planet 2013 FY27 The Astronomical Journal 156 6 270 6 September 2018 1809.02184 10.3847/1538-3881/aae92a 2018AJ....156..270S 119522310 free External links MPEC 2014-G07 : 2013 FZ27, Minor Planet Electronic Circular Discovery Circumstances: Numbered Minor Planets (520001)-(525000) – Minor Planet Center 523671 523671 (523671) 2013 FZ 27 523671 523671 523671 20101215