12374 Rakhat

Background asteroid from the central region of the asteroid belt May 2024 yes 12374 Rakhat #D6D6D6 012374-asteroid shape model (12374) Rakhat.png Shape model of Rakhat from its lightcurve C. P. de Saint-Aignan Palomar Obs. 15 May 1994 (12374) Rakhat 1994 JG 91958 TP1974 OP1978 NV 2 fictional planet(novel The Sparrow) main-belt(middle)background 4 September 2017 (JD 2458000.5) 0 62.27 yr (22,743 days) 3.3333 AU 1.7672 AU 2.5502 AU 0.3071 4.07 yr (1,488 days) 197.25° 0.2420 ms / day 8.9855° 123.46° 201.94° 4.38 km (calculated)4.570 0.034 km 18.1702 0.0205 h 0.20 (assumed)0.212 0.030 S (assumed) 13.707 0.005 (R)13.814.014.1614.60 0.76 12374 Rakhat (prov. designation: 1994 JG 9) is a background asteroid from the central region of the asteroid belt, approximately 4.5 km mi off 2 us in diameter. It was discovered on 15 May 1994, by American astronomer and software engineer Charles de Saint-Aignan at the Palomar Observatory in California, United States. The asteroid was named for the fictional planet "Rakhat" in the novel The Sparrow Orbit and classification thumb|200px|left|Orbital diagram of Rakhat Rakhat is a non-family asteroid from the main belt's background population. It orbits the Sun in the central main-belt at a distance of 1.8–3.3 AU once every 4 years and 1 month (1,488 days). Its orbit has an eccentricity of 0.31 and an inclination of 9° with respect to the ecliptic. A first precovery was taken at the discovering Palomar Observatory in November 1954, extending the asteroid's observation arc by 40 years prior to its official discovery observation. Naming This minor planet was named "Rakhat" after the fictional planet in the novel The Sparrow by Mary Doria Russell. The novel begins in 2019, when SETI at the Arecibo, picks up radio broadcasts of music from this planet in the vicinity of Alpha Centauri. The first expedition is organized by the Jesuit order, known for its missionary, linguistic and scientific activities. The novel was followed by the sequel Children of God. The approved naming citation was published by the Minor Planet Center on 28 March 2002 (M.P.C. 45234). Physical characteristics Rakhat is an assumed common S-type asteroid. In May 2010, a rotational lightcurve was obtained from photometric observations made astronomers at the Palomar Transient Factory in California. It gave a rotation period of 18.1702 0.0205 hours with a brightness amplitude of 0.31 in magnitude (U=2). According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, the asteroid measures 4.6 kilometers in diameter and its surface has an albedo of 0.21, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 4.4 kilometers. References 30em 2017-03-01 last obs. JPL Small-Body Database Browser: 12374 Rakhat (1994 JG9) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012374 Jet Propulsion Laboratory 5 July 2017 Dictionary of Minor Planet Names https://archive.org/details/dictionaryminorp00schm limited Schmadel Lutz D. Springer Berlin Heidelberg (12374) Rakhat 780–781 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_8579 12374 Rakhat (1994 JG9) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=12374 19 May 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 19 May 2016 12374 19 May 2016 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. Spahr R. M. Cutri E. Wright J. Watkins W. Mo C. Maleszewski November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 19 May 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 19 May 2016 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 19 May 2016 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri J. Dailey P. R. M. Eisenhardt R. S. McMillan T. B. Spahr M. F. Skrutskie D. Tholen R. G. Walker E. L. Wright E. DeBaun D. Elsbury T. IV Gautier S. Gomillion A. Wilkins November 2011 Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters https://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 4 December 2016 External links Lightcurve Database Query (LCDB), at www.minorplanet.info Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center 12374 12373 Lancearmstrong 12374 012374 Category:Discoveries by Charles de Saint-Aignan Category:Named minor planets 19940515