(5407) 1992 AX

Mars-crossing asteroid binary November 2018 yes (5407) 1992 AX #FA8072 File:Orbit of 1992 AX.gif Orbital diagram of 1992 AX S. UedaH. Kaneda Kushiro Obs. 4 January 1992 (5407) 1992 AX 1987 BH 2 Mars crosserbinary 27 April 2019 (JD 2458600.5) 0 66.90 yr (24,434 d) 2.3486 AU 1.3279 AU 1.8383 AU 0.2776 2.49 yr (910 d) 263.87° 0.3955 ms / day 11.390° 117.74° 108.78° 0.377 AU (147 LD) 1 (D: 780 m; P: 13.52 h) 2.78 0.55 km3.60 0.36 km3.8 0.4 km4.18 0.12 km 2.5488 h 0.1990.2940.3760.40 SMASS SkSB–V 0.690V–R 0.500V–I 0.840 13.9014.014.47 (5407) 1992 AX is a stony asteroid and a synchronous binary Mars-crosser from the innermost region of the asteroid belt, approximately 3.6 km mi off 2 us in diameter. It was discovered on 4 January 1992, by Japanese astronomers Seiji Ueda and Hiroshi Kaneda at the Kushiro Observatory on Hokkaidō, Japan. The S-type asteroid has a short rotation period of 2.5 hours. Its sub-kilometer satellite was discovered in 1997. As of 2018, the binary system has not been named. Orbit and classification 1992 AX is a member of the Mars-crossing asteroids, a dynamically unstable group between the main belt and the near-Earth populations, crossing the orbit of Mars at 1.66 AU. It orbits the Sun at a distance of 1.3–2.3 AU once every 2 years and 6 months (910 days; semi-major axis of 1.84 AU). Its orbit has an eccentricity of 0.28 and an inclination of 11° with respect to the ecliptic. The asteroid makes occasional close approaches to Mars. Its next close approach, on 22 January 2027, will bring it 0.0753 AU km on flip from Mars. The body's observation arc begins with a precovery taken at Palomar Observatory in November 1951, or more than 40 years prior to its official discovery observation at Kushiro. Naming This minor planet was numbered by the Minor Planet Center on 9 December 1992 (M.P.C. 21249). As of 2018, it has not been named. Physical characteristics 1992 AX has been characterized as a common, stony S-type asteroid. In the SMASS taxonomy, it is an Sk-subtype, that transitions between the S and K-type asteroids. The body's color indices of 0.690 (B–V), 0.500 (V–R) and 0.840 (V–I) were also determined. Lightcurves Rotation period Since 1997, several rotational lightcurves of 1992 AX have been obtained from photometric observations by Petr Pravec and collaborating astronomers. Best-rated lightcurve analysis gave a rotation period of 2.5488 hours with a consolidated brightness amplitude between 0.10 and 0.12 magnitude (U=2/3). The results supersedes a tentative period determination of 3.6 hours by Marc Buie (U=1). Satellite During the observations in January 1997, it was also revealed that 1992 AX is a synchronous binary asteroid with a minor-planet moon in its orbit. The satellite measures approximately 780 meters in diameter, or about 20% of its primary, and has an orbital period of 13.52 hours with an estimated semi-major axis of 5.8 kilometers for its very circular orbit. Observations by Pravec in January and February 2012 confirmed the binary nature of this asteroid, as well as its rotational and orbital periods. Diameter and albedo According to the surveys carried out by the Japanese Akari satellite, the Spitzer Space Telescope and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), 1992 AX measures between 2.78 and 4.18 kilometers in diameter and its surface has an albedo between 0.199 and 0.40. In 2017, a study by WISE dedicated to Mars-crossing asteroids determined a diameter of 3.60 kilometers with a high albedo of 0.376. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and derives a diameter of 3.79 kilometers based on an absolute magnitude of 14.47. The Johnston's archive gives an effective (combined) diameter of 3.98 kilometers with 3.9 and 0.78 kilometers for its primary and secondary body, respectively. References 30em 2018-10-21 last obs. JPL Small-Body Database Browser: 5407 (1992 AX) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2005407;cad=1 Jet Propulsion Laboratory 19 November 2018 5407 (1992 AX) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=5407 19 November 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 19 November 2018 Asteroid (5407) 1992 AX Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=5407 19 November 2018 Asteroids with Satellites Database – (450894) 2008 BT18 Johnston's Archive Johnston Wm. Robert 18 February 2017 http://www.johnstonsarchive.net/astro/astmoons/am-05407.html 19 November 2018 5407 19 November 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 F. Marchis J. E. Enriquez J. P. Emery M. Mueller M. Baek J. Pollock M. Assafin R. Vieira Martins J. Berthier F. Vachier D. P. Cruikshank L. F. Lim D. E. Reichart K. M. Ivarsen J. B. Haislip A. P. LaCluyze November 2012 Multiple asteroid systems: Dimensions and thermal properties from Spitzer Space Telescope and ground-based observations Icarus 221 2 1130–1161 2012Icar..221.1130M 10.1016/j.icarus.2012.09.013 1604.05384 161887 V. Alí-Lagoa M. Delbo' July 2017 Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data Astronomy and Astrophysics 603 8 2017A&A...603A..55A 10.1051/0004-6361/201629917 1705.10263 119224590 6 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 119289027 free 6 Petr Pravec Lenka Sarounová David L. Rabinowitz Michael D. Hicks Marek Wolf Yurij N. Krugly Fiodor P. Velichko Vasilij G. Shevchenko Vasilij G. Chiorny Ninel M. Gaftonyuk Guy Genevier July 2000 Two-Period Lightcurves of 1996 FG 3, 1998 PG, and (5407) 1992 AX: One Probable and Two Possible Binary Asteroids Icarus 146 1 190–203 2000Icar..146..190P 10.1006/icar.2000.6375 6 P. Pravec P. Scheirich P. Kusnirák L. Sarounová S. Mottola G. Hahn P. Brown G. Esquerdo N. Kaiser Z. Krzeminski D. P. Pray B. D. Warner A. W. Harris M. C. Nolan E. S. Howell L. A. M. Benner J.-L. Margot A. Galád W. Holliday M. D. Hicks Yu. N. Krugly D. Tholen R. Whiteley F. Marchis D. R. DeGraff A. Grauer S. Larson F. P. Velichko W. R. Cooney R. Stephens J. Zhu K. Kirsch R. Dyvig L. Snyder V. Reddy S. Moore S. Gajdos J. Világi G. Masi D. Higgins G. Funkhouser B. Knight S. Slivan R. Behrend M. Grenon G. Burki R. Roy C. Demeautis D. Matter N. Waelchli Y. Revaz A. Klotz M. Rieugné P. Thierry V. Cotrez L. Brunetto G. Kober March 2006 Photometric survey of binary near-Earth asteroids Icarus 181 1 63–93 2006Icar..181...63P 10.1016/j.icarus.2005.10.014 Juan A. Sanchez René Michelsen Vishnu Reddy Andreas Nathues July 2013 Surface composition and taxonomic classification of a group of near-Earth and Mars-crossing asteroids Icarus 225 1 131–140 2013Icar..225..131S 10.1016/j.icarus.2013.02.036 1302.4449 119207812 External links Asteroids with Satellites, Robert Johnston, johnstonsarchive.net Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center 5407 5406 Jonjoseph 5407 5408 Thé 005407 Category:Discoveries by Hiroshi Kaneda Category:Discoveries by Seiji Ueda 005407 005407 19920104