1374 Isora

Mars-crossing asteroid October 2019 yes 1374 Isora #FA8072 21 October 1935 E. Delporte Uccle Obs. (1374) Isora 1935 UA Constructed female name("Rosi" spelled backwards) Mars-crosser 16 February 2017 (JD 2457800.5) 0 81.05 yr (29,604 days) 2.8775 AU 1.6230 AU 2.2502 AU 0.2788 3.38 yr (1,233 days) 44.987° 0.2920 ms / day 5.2943° 302.56° 60.988° 0.6290 AU 5.48 km (derived) 8 2 h36.699 0.001 h 0.20 (assumed) SMASS = SqS 13.0013.313.32 0.3213.67 0.15 1374 Isora, provisional designation 1935 UA, is a stony asteroid and eccentric Mars-crosser from the innermost regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 21 October 1935, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium. Orbit and classification In the SMASS taxonomy, Isora is classified as a Sq-type, an intermediary between the abundant S and rather rare Q-type asteroids. It orbits the Sun at a distance of 1.6–2.9 AU once every 3 years and 5 months (1,233 days). Its orbit has an eccentricity of 0.28 and an inclination of 5° with respect to the ecliptic. Isoras observation arc begins with its official discovery observation at Uccle, as no precoveries were taken and no prior identifications were made. Physical characteristics In January 2014, a rotational light-curve of Isora was obtained by American astronomer Robert D. Stephens at the Center for Solar System Studies (CS3) in California. Light-curve analysis gave a longer than average rotation period of 36.699 hours with a brightness variation of 0.12 magnitude (U=2+). However, a second period solution of 18.35 hours is also possible. The result supersedes photometric observations taken by Wiesław Z. Wiśniewski in 1989, which rendered a fragmentary light-curve with a period of 8 hours (U=1). The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 5.48 kilometers using an absolute magnitude of 13.67. Naming Isora is the backwards spelled feminine name "Rosi" with an appended "a". Naming was proposed by Gustav Stracke (1887–1943) – astronomer at the German Astronomisches Rechen-Institut, and after whom the minor planet 1019 Strackea is named – and first cited by Paul Herget in his The Names of the Minor Planets in 1955 (H 125). References 2016-11-08 last obs. JPL Small-Body Database Browser: 1374 Isora (1935 UA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001374 Jet Propulsion Laboratory 11 January 2017 Dictionary of Minor Planet Names – (1374) Isora Schmadel Lutz D. Springer Berlin Heidelberg 111 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1375 (1374) Isora 1374 Isora (1935 UA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1374 11 January 2017 1374 11 January 2017 W. Z. Wisniewski T. M. Michalowski A. W. Harris R. S. McMillan March 1995 Photoelectric Observations of 125 Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1995LPI....26.1511W Abstracts of the Lunar and Planetary Science Conference 26 1511 1995LPI....26.1511W 11 January 2017 Stephens, Robert D. July 2014 Asteroids Observed from CS3: 2014 January - March http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41..171S The Minor Planet Bulletin 41 3 171–175 1052-8091 2014MPBu...41..171S 11 January 2017 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 11 January 2017 B. Carry E. Solano S. Eggl F. E. DeMeo April 2016 Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016Icar..268..340C Icarus 268 340–354 2016Icar..268..340C 10.1016/j.icarus.2015.12.047 11 January 2017 1601.02087 External links 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 (1)-(5000) – Minor Planet Center 1374 1373 Cincinnati 1374 1375 Alfreda 001374 Category:Discoveries by Eugène Joseph Delporte Category:Named minor planets 001374 19351021