1958 Chandra

Dark main-belt asteroid October 2019 yes 1958 Chandra #D6D6D6 001958-asteroid shape model (1958) Chandra.png Modelled shape of Chandra from its lightcurve C. U. Cesco El Leoncito(Yale–Columbia Station) 24 September 1970 (1958) Chandra 1970 SB1947 HD1959 RG 11965 UN1971 XA Subrahmanyan Chandrasekhar(astrophysicist) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 62.66 yr (22,887 days) 3.6220 AU 2.5840 AU 3.1030 AU 0.1673 5.47 yr (1,997 days) 233.69° 0.1803 ms / day 10.559° 345.04° 318.95° 33.82 km (derived)34.278 0.22036.167 0.349 km 7.0571 0.0029 h7.070 0.004 h 0.0511 (derived)0.0709 0.01380.082 0.007 C 10.711.102 0.003 (R)11.18 0.1811.2 1958 Chandra (prov. designation: 1970 SB) is a dark background asteroid from the outer region of the asteroid belt, approximately 35 km mi off 2 us in diameter. It was discovered on 24 September 1970, by Argentinian astronomer Carlos Cesco at the Yale–Columbia Southern Station of the Leoncito Astronomical Complex in San Juan, Argentina (also see Félix Aguilar Observatory). It was named after astrophysicist Subrahmanyan Chandrasekhar. Orbit and classification Chandra is a dark C-type asteroid that orbits the Sun in the outer main-belt at a distance of 2.6–3.6 AU once every 5 years and 6 months (1,997 days). Its orbit has an eccentricity of 0.17 and an inclination of 11° with respect to the ecliptic. In April 1947, the asteroid was first identified as 1947 HD at Algiers Observatory. The body's observation arc begins 16 years prior to its official discovery observation with a precovery taken at Palomar Observatory in 1954. Naming This minor planet was named in honor of Subrahmanyan Chandrasekhar (1910–1995), the Nobel Prize winning Indian–American theoretical astrophysicist (also see Chandrasekhar limit). The approved naming citation was published by the Minor Planet Center on 1 November 1979 (M.P.C. 5013). Physical characteristics Photometry In December 2010, a rotational lightcurve was obtained for this asteroid from photometric observations at the U.S. Palomar Transient Factory, California. It gave a rotation period of 7.0571 0.0029 hours with a brightness variation of 0.35 magnitude (U=2). A second lightcurve, obtained by Italian amateur astronomer Silvano Casulli in August 2014, gave a concurring period of 7.070 0.004 hours with an amplitude of 0.38 in magnitude (U=3-). Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 36.2 kilometers in diameter and its surface has an albedo of 0.07, while the Collaborative Asteroid Lightcurve Link derives an albedo of 0.05 and a diameter of 33.8 kilometers with an absolute magnitude of 11.2. References 30em 2017-06-04 last obs. JPL Small-Body Database Browser: 1958 Chandra (1970 SB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001958 Jet Propulsion Laboratory 2 July 2017 Dictionary of Minor Planet Names Schmadel Lutz D. Springer Berlin Heidelberg (1958) Chandra 157 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1959 1958 Chandra (1970 SB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1958 25 August 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 25 August 2016 Asteroids and comets rotation curves – (1958) Chandra Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001958 25 August 2016 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001958 dead 1958 25 August 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 The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 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 25 August 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 25 August 2016 6 Joseph R. Masiero T. Grav A. K. Mainzer C. R. Nugent J. M. Bauer R. Stevenson S. Sonnett August 2014 Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 8 December 2016 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20110721225144/http://www.minorplanet.info/lightcurvedatabase.html 21 July 2011 ) 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 (1)-(5000) – Minor Planet Center 1958 1957 Angara 1958 1959 Karbyshev 001958 Category:Discoveries by Carlos Ulrrico Cesco Category:Named minor planets 19700924