(35671) 1998 SN165

Trans-Neptunian object July 2021 yes (35671) 1998 SN 165 #C2E0FF AnimatedOrbitOf356711998SN165 The orbit of 1998 SN 165 around the Sun A. Gleason Kitt Peak Obs. 23 September 1998 (35671) 1998 SN 165 TNOcubewanop-DPdistant 1 July 2021 (JD 2459396.5) 2 22.26 yr (8,129 d) 39.662 AU 36.453 AU 38.058 AU 0.0422 234.79 yr (85,755 d) 301.71° 0.0042 ms / day 4.5986° 192.07° 15 July 2065perihelion 257.82° 0 393 39 km 446 80 km 460 80 km 473 km (radiometric) 8.84 h 0.043 0.060 Prominent water (H 2 O/"bowl" type)5 BB (grey-blue) BR 1.131.123 B-V 0.7120.710 V-R 0.4440.420 V-I 0.8610.820 5.68 (35671) 1998 SN 165 is a trans-Neptunian object from the Kuiper belt located in the outermost region of the Solar System. It was discovered on 23 September 1998, by American astronomer Arianna Gleason at the Kitt Peak National Observatory near Tucson, Arizona. The cold classical Kuiper belt object is a dwarf planet candidate, as it measures approximately 400 km mi off 2 us in diameter. It has a grey-blue color (BB) and a rotation period of 8.8 hours. 2025, it has not been named. Orbit and classification 1998 SN 165 orbits the Sun at a distance of 36.5–39.7 AU once every 234 years and 9 months (85,755 days; semi-major axis of 38.06 AU). Its orbit has an eccentricity of 0.04 and an inclination of 5° with respect to the ecliptic. 2021 the object is at 37.2 AU, approaching the Sun until 15 July 2065, when it will come to perihelion.perihelion The body's observation arc begins at Kitt Peak in September 1998, just eight nights prior to its official discovery observation. 1998 SN 165 is a non-resonant cubewano, also known as a classical Kuiper belt object, and is part of the less populous cubewano group orbiting between Neptune and the resonant plutino population. It has a low-eccentricity orbit, and thus belongs to the cold population, distinct from the "stirred" hot population with inclinations higher than 5°. In a previous publication, the object was originally classified as a plutino. Numbering and naming This minor planet was numbered by the Minor Planet Center on 27 February 2002 and received the number 35671 35671 in the minor planet catalog (M.P.C. 44869). 2025, it has not been named. According to the established naming conventions, it will receive a mythological or mythic name (not necessarily from Classical mythology), in particular one associated with creation. Physical characteristics 1998 SN 165 has a blue-grey color (BB), with various color indices measured, giving a difference between the blue and red filter magnitude (BR) of 1.123 and 1.13, respectively. Rotation period In February 2001, a rotational lightcurve of 1998 SN 165 was obtained from photometric observations by Pedro Lacerda and Jane Luu. Lightcurve analysis gave an ambiguous rotation period of 8.84 hours with a brightness amplitude of 0.16 magnitude (U=2). An alternative period of 8.70 hours is also possible. Diameter and albedo According to observations by the space-based Herschel and Spitzer telescopes, 1998 SN 165 measures between 393 and 460 kilometers and its surface has a low albedo between 0.043 and 0.060. While Johnston's Archive adopts a diameter of 393 kilometers, astronomer Michael Brown gives a radiometric diameter of 473 kilometers. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 and calculates a diameter of 334 kilometers based on an absolute magnitude of 5.5. A generic magnitude-to-diameter conversion with an albedo of 0.9 gives a diameter of 352 kilometers. Notes perihelion JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma, ±9 days.) References 30em 2017-09-24 last obs. JPL Small-Body Database Browser: 35671 (1998 SN165) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2035671 Jet Propulsion Laboratory 5 January 2019 35671 (1998 SN165) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=35671 5 January 2019 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 5 January 2019 Naming of Astronomical Objects – Minor planets IAU – International Astronomical Union https://www.iau.org/public/themes/naming/#minorplanets 27 July 2021 31 October 2013 https://web.archive.org/web/20131031154417/https://www.iau.org/public/themes/naming/#minorplanets dead List of Known Trans-Neptunian Objects Johnston's Archive 18 August 2020 Johnston Wm. Robert http://www.johnstonsarchive.net/astro/tnoslist.html 27 July 2021 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 5 January 2019 Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope The Solar System beyond Neptune University of Arizona Press Stansberry John Grundy Will Brown Michael E. Cruikshank Dale Spencer John Trilling David Margot Jean-Luc 2008 astro-ph/0702538 2008ssbn.book..161S M. Antonietta Barucci Hermann Boehnhardt Dale P. Cruikshank Alessandro Morbidelli 6 E. Vilenius C. Kiss T. Müller M. Mommert P. Santos-Sanz A. Pál J. Stansberry M. Mueller N. Peixinho E. Lellouch S. Fornasier A. Delsanti A. Thirouin J. L. Ortiz R. Duffard D. Perna F. Henry April 2014 "TNOs are Cool": A survey of the trans-Neptunian region. X. Analysis of classical Kuiper belt objects from Herschel and Spitzer observations Astronomy and Astrophysics 564 18 2014A&A...564A..35V 10.1051/0004-6361/201322416 free 1403.6309 118513049 R. Gil-Hutton Javier Licandro August 2001 VR Photometry of Sixteen Kuiper Belt Objects Icarus 152 2 246–250 2001Icar..152..246G 10.1006/icar.2001.6627 Asteroid (35671) 1998 SN165 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=35671 5 January 2019 Orbit Fit and Astrometric record for 35671 Southwest Research Institute http://www.boulder.swri.edu/~buie/kbo/astrom/35671.html 27 July 2021The Deep Ecliptic Survey Object Classifications Asteroid Size Estimator CNEOS NASA/JPL https://cneos.jpl.nasa.gov/tools/ast_size_est.html 5 January 2019 35671 5 January 2019 (35671) 1998 SN165 – Ephemerides AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.3.0&n=35671 27 July 2021 Pedro Lacerda Jane Luu April 2006 Analysis of the Rotational Properties of Kuiper Belt Objects The Astronomical Journal 131 4 2314–2326 2006AJ....131.2314L 10.1086/501047 astro-ph/0601257 14950702 N. Peixinho A. Delsanti A. Guilbert-Lepoutre R. Gafeira P. Lacerda October 2012 The bimodal colors of Centaurs and small Kuiper belt objects Astronomy and Astrophysics 546 12 2012A&A...546A..86P 10.1051/0004-6361/201219057 free 1206.3153 55876118 O. R. Hainaut H. Boehnhardt S. Protopapa October 2012 Colours of minor bodies in the outer solar system. II. A statistical analysis revisited Astronomy and Astrophysics 546 20 2012A&A...546A.115H 10.1051/0004-6361/201219566 free 1209.1896 54776793 Irina N. Belskaya Maria A. Barucci Marcello Fulchignoni Anatolij N. Dovgopol April 2015 Updated taxonomy of trans-neptunian objects and centaurs: Influence of albedo Icarus 250 482–491 2015Icar..250..482B 10.1016/j.icarus.2014.12.004 etal Noemí Pinilla-Alonso Rosario Brunetto Mário N. De Prá Bryan J. Holler Elsa Hénault Ana Carolina de Souza Feliciano A JWST/DiSCo-TNOs portrait of the primordial Solar System through its trans-Neptunian objects https://hal.science/hal-04961629v1/file/s41550-024-02433-2.pdf Nature Astronomy December 2024 9 2 230–244 10.1038/s41550-024-02433-2 2025NatAs...9..230P 274932942 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) The Deep Ecliptic Survey Object Classifications MPEC 2006-X45 : DISTANT MINOR PLANETS (2006 DEC. 21.0 TT), Minor Planet Electronic Circular List of Transneptunian Objects, Minor Planet Center Discovery Circumstances: Numbered Minor Planets (35001)-(40000) – Minor Planet Center 35671 35671 (35671) 1998 SN 165 035671 Category:Discoveries by Arianna E. Gleason 19980923