12929 Periboea

Asteroid June 2018 yes 12929 Periboea #C2FFFF C. W. Juels Fountain Hills Obs. 2 October 1999 (12929) Periboea 1999 TZ 11992 CF 6 Periboean Periboea(Greek mythology) Jupiter trojanTrojanbackground 23 March 2018 (JD 2458200.5) 0 64.68 yr (23,624 d) 5.4426 AU 5.0325 AU 5.2376 AU 0.0392 11.99 yr (4,378 d) 213.65° 0.0822 ms / day 43.453° 200.23° 130.28° 0.0947 AU 2.4490 51.5 5 km54.08 0.62 km55.34 4.04 km 9.2749 0.0016 h 0.053 0.0120.066 0.0110.110 0.017 C (assumed)B–V 0.830 0.060V–R 0.460 0.040V–I 0.880 0.031 9.309.792 0.025 (R)9.9 12929 Periboea, provisional designation: 1999 TZ 1, is a dark Jupiter trojan from the Trojan camp, approximately 54 km mi off 2 us in diameter. It was discovered on 2 October 1999, by American astronomer Charles W. Juels at the Fountain Hills Observatory in Arizona. Originally considered a centaur, this now re-classified Jovian asteroid has a rotation period of 9.3 hours and belongs to the 80 largest Jupiter trojans. It was named from Greek mythology after Periboea, mother of Pelagon by the river-god Axius. Orbit and classification Periboea is a dark Jovian asteroid in a 1:1 orbital resonance with Jupiter. It is located in the trailering Trojan camp at the Gas Giant's Lagrangian point, 60° behind its orbit (see Trojans in astronomy). It is also a non-family asteroid of the Jovian background population. It orbits the Sun at a distance of 5.0–5.4 AU once every 11 years and 12 months (4,378 days; semi-major axis of 5.24 AU). Its orbit has an eccentricity of 0.04 and a high inclination of 43° with respect to the ecliptic. The body's observation arc begins with a precovery taken at Palomar Observatory in September 1953, or 46 years prior to its official discovery observation at Fountain Hills. Classification as centaur Periboea was originally listed by the Minor Planet Center (MPC) as a centaur. However, its location close to yes, its low albedo and spectral slope, as well as its estimated dynamical lifetime of more than a billion years, led to the conclusion that the formerly classified centaur is indeed a Jupiter trojan. Numbering and naming This minor planet was numbered by the MPC on 22 December 1999 (M.P.C. 22480). On 14 May 2021, the object was named by the Working Group for Small Bodies Nomenclature (WGSBN), after Periboea, a mortal woman and eldest daughter of Acessamenus from Greek mythology. Periboea was the mother of Pelagon who she conceived by way of the river god Axius. Her grandson was the Trojan ally Asteropaios. Physical characteristics Periboea is an assumed C-type asteroid. It has a V–I color index of 0.88. Rotation period In 2007, four rotational lightcurves of Periboea have been obtained from photometric observations with a period of 10.4 and 10.422 hours (U=2/2/2/2-). Best-rated lightcurve, obtained by Stefano Mottola at the Calar Alto Observatory over seven nights from May to June 2009, gave a rotation period of 9.2749 0.0016 hours with a brightness amplitude of 0.17 magnitude (U=2+). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, and observations by French and Spanish astronomers, Periboea measures between 51.5 and 55.34 kilometers in diameter and its surface has an albedo between 0.053 and 0.110. The Collaborative Asteroid Lightcurve Link assumes a standard albedo of a carbonaceous asteroid 0.057 and calculates a diameter of 61.04 kilometers based on an absolute magnitude of 9.8. References 30em 2018-05-22 last obs. JPL Small-Body Database Browser: 12929 (1999 TZ1) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012929 Jet Propulsion Laboratory 19 June 2018 12929 (1999 TZ1) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=12929 19 June 2018 List of Jupiter Trojans Minor Planet Center V. Carruba 1 June 2018 https://www.minorplanetcenter.net/iau/lists/JupiterTrojans.html 19 June 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 19 June 2018 WGSBN Bulletin Archive Working Group for Small Bodies Nomenclature 14 May 2021 https://www.wgsbn-iau.org/files/Bulletins/index.html 16 May 2021 (Bulletin #1) T. Grav A. K. Mainzer J. M. Bauer J. R. Masiero C. R. Nugent November 2012 WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy The Astrophysical Journal 759 1 10 2012ApJ...759...49G 10.1088/0004-637X/759/1/49 1209.1549 119101711 (online catalog) Asteroid (12929) 1999 TZ1 – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=12929&pc=1.1.6 19 June 2018 12929 19 June 2018 6 Fumihiko Usui Daisuke Kuroda Thomas G. Müller Sunao Hasegawa Masateru Ishiguro Takafumi Ootsubo Daisuke Ishihara Hirokazu Kataza Satoshi Takita Shinki Oyabu Munetaka Ueno Hideo Matsuhara Takashi Onaka October 2011 Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 free (online, AcuA catalog p. 153) 6 A. Moullet E. Lellouch A. Doressoundiram J. L. Ortiz R. Duffard A. Morbidelli P. Vernazza R. Moreno May 2008 Physical and dynamical properties of (12929) 1999 TZ{1} suggest that it is a Trojan https://www.aanda.org/articles/aa/pdf/2008/20/aa09474-08.pdf Astronomy and Astrophysics 483 2 L17–L20 2008A&A...483L..17M 10.1051/0004-6361:200809474 19 June 2018 free 6 Davide Perna E. Dotto A. Barucci A. Rossi C. de Bergh A. Doressoundiram S. Fornasier September 2008 Light Curves and Densities of Centaurs and Trans-Neptunian Objects from the ESO Large Program American Astronomical Society 40 483 2008DPS....40.4708P 6 E. Dotto D. Perna M. A. Barucci A. Rossi C. de Bergh A. Doressoundiram S. Fornasier November 2008 Rotational properties of Centaurs and Trans-Neptunian Objects. Lightcurves and densities Astronomy and Astrophysics 490 2 829–833 2008A&A...490..829D 10.1051/0004-6361:200809615 free A. Thirouin J. L. Ortiz R. Duffard P. Santos-Sanz F. J. Aceituno N. Morales November 2010 Short-term variability of a sample of 29 trans-Neptunian objects and Centaurs Astronomy and Astrophysics 522 43 2010A&A...522A..93T 10.1051/0004-6361/200912340 free 1004.4841 54039561 6 Stefano Mottola Mario Di Martino Anders Erikson Maria Gonano-Beurer Albino Carbognani Uri Carsenty Gerhard Hahn Hans-Josef Schober Felix Lahulla Marco Delbò Claes-Ingvar Lagerkvist May 2011 Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects The Astronomical Journal 141 5 32 2011AJ....141..170M 10.1088/0004-6256/141/5/170 free Joseph P. Chatelain Todd J. Henry Linda M. French Jennifer G. Winters David E. Trilling June 2016 Photometric colors of the brightest members of the Jupiter L5 Trojan cloud Icarus 271 158–169 2016Icar..271..158C 10.1016/j.icarus.2016.01.026 free External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center Asteroid (12929) 1999 TZ1 https://web.archive.org/web/20180619062755/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=12929 19 June 2018 at the Small Bodies Data Ferret 12929 2012929 12928 Nicolapozio 12929 (12929) 1999 TZ 1 012929 Category:Discoveries by Charles W. Juels Category:Named minor planets 19991002