(9992) 1997 TG19

Asteroid October 2019 yes (9992) 1997 TG 19 #FA8072 8 October 1997 T. KagawaT. Urata Gekko Obs. (9992) 1997 TG 19 1974 HC 11980 BD Mars-crosser 21 November 2025 (JD 2461000.5) 0 51.31 yr (18,740 days) 2.8074 AU 1.5334 AU 2.1704 AU 0.2935 3.20 yr (1,169 days) 358.67° 0.3082 ms / day 2.5918° 42.945° 234.89° 3.07 km (derived)4.75 0.36 km 5.7300 0.0016 h5.7402 0.0005 h5.7408 0.0009 hlcdb-Pravec 0.137 0.0220.20 (assumed) S 14.4014.48 0.08 (R)lcdb-Pravec14.514.663 0.004 (R)14.76 0.2614.97 0.094 (9992) 1997 TG 19 is a stony asteroid and eccentric Mars-crosser, approximately 4 kilometers in diameter. It was discovered on 8 October 1997, by Japanese astronomers Tetsuo Kagawa and Takeshi Urata at Gekko Observatory near Shizuoka, Japan. Orbit and classification thumb|left|180px|Orbit of (9992) 1997 TG 19 (blue), compared to the inner planets and Jupiter (outermost) The stony S-type asteroid orbits the Sun at a distance of 1.5–2.8 AU once every 3 years and 2 months (1,169 days). Its orbit has an eccentricity of 0.29 and an inclination of 3° with respect to the ecliptic. The first used observation was made at the Cerro El Roble Station in 1974, extending the asteroid's observation arc by 23 years prior to its discovery. Physical characteristics Lightcurves Between 2006 and 2013, three rotational lightcurves for this asteroid were obtained from photometric observations made at the Hunters Hill Observatory, Australia, the Ondřejov Observatory, Czech Republic, and the U.S. Palomar Transient Factory, California. They gave a well-defined, concurring rotation period of 5.7402 0.0005 hours (best result) with a brightness amplitude of 0.42, 0.40 and 0.27 in magnitude, respectively (U=3/3/2).lcdb-Pravec Diameter and albedo According to the survey carried out by the Japanese Akari satellite, the asteroid's surface has an albedo of 0.13 and a diameter of 4.75 kilometers. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 3.1 kilometers, as the higher the body's albedo (reflectivity), the shorter its diameter, at a constant absolute magnitude (brightness). Numbering and naming This minor planet was numbered by the Minor Planet Center on 2 February 1999. As of 2026, it has not been named. Notes lcdb-Pravec Pravec (2006) web: rotation period 5.7408 0.0009 hours with a brightness amplitude of 0.0009 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (9992) and Pravec − Results from Asteroid Photometry Project at Ondřejov Observatory References 30em 2017-01-28 last obs. JPL Small-Body Database Browser: 9992 (1997 TG19) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009992 Jet Propulsion Laboratory 26 May 2017 9992 (1997 TG19) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=9992 4 July 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 24 February 2018 9992 4 July 2016 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 (online, AcuA catalog p. 153) 6 David Higgins Petr Pravec Peter Kusnirak Adrian Galad Leos Kornos Donald Pray Robert A. Koff December 2006 Asteroid lightcurve analysis at Hunters Hill Observatory and collaborating stations - autumn 2006 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2006MPBu...33...89H The Minor Planet Bulletin 33 4 89–91 1052-8091 2006MPBu...33...89H 4 July 2016 6 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. Prince Shrinivas Kulkarni September 2015 Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W The Astronomical Journal 150 3 35 2015AJ....150...75W 10.1088/0004-6256/150/3/75 1504.04041 4 July 2016 Petr Pravec Alan W. Harris Peter Kusnirák Adrián Galád Kamil Hornoch September 2012 Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P Icarus 221 1 365–387 2012Icar..221..365P 10.1016/j.icarus.2012.07.026 4 July 2016 11104/0217021 free 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. Chambers Heather Flewelling Nick Kaiser Eugen A. Magnier Jeff S. Morgan Paul A. Price John L. Tonry Christopher Waters November 2015 Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 4 July 2016 External links Pravec − Results from Asteroid Photometry Project at Ondřejov Observatory 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 Asteroids and comets rotation curves, CdR https://web.archive.org/web/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center 9992 9991 Anežka 9992 (9992) 1997 TG 19 9993 Kumamoto Category:Mars-crossing asteroids 1997 TG19 1997 TG19 19971008