1455 Mitchella

Main-belt asteroid October 2019 yes 1455 Mitchella #D6D6D6 A. Bohrmann Heidelberg Obs. 5 June 1937 (1455) Mitchella 1937 LF1947 LB1978 QR 3 Maria Mitchell(American astronomer) main-belt(inner)Florabackground 4 September 2017 (JD 2458000.5) 0 79.81 yr (29,152 days) 2.5273 AU 1.9665 AU 2.2469 AU 0.1248 3.37 yr (1,230 days) 321.18° 0.2926 ms / day 7.7548° 128.33° 100.60° 6.449 0.170 km6.55 1.51 km6.646 0.102 km7.00 1.56 km7.47 km (calculated) 118.7 0.5 hlcdb-Higgins-2011 0.24 (assumed)0.26 0.120.31 0.170.3333 0.04530.353 0.097 S (assumed) 12.712.8013.0313.27 0.31 1455 Mitchella, provisional designation 1937 LF, is a Florian asteroid, slow rotator and suspected tumbler from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 5 June 1937, by astronomer Alfred Bohrmann at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after American astronomer Maria Mitchell. Orbit and classification Mitchella is a non-family asteroid of the main belt's background population when applying the Hierarchical Clustering Method to its proper orbital elements. It has also been classified as a member of the Flora family (402), a giant asteroid family and the largest family of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,230 days). Its orbit has an eccentricity of 0.12 and an inclination of 8° with respect to the ecliptic. The body's observation arc begins at Heidelberg, one month after its official discovery observation. Physical characteristics Mitchella is an assumed stony S-type asteroid, which is also the overall spectral type for members of the Flora family. Rotation period In June 2006, a rotational lightcurve of Mitchella was obtained from photometric observations by Australian astronomer David Higgins at the Hunters Hill Observatory (E14). Lightcurve analysis gave a rotation period of 118.7 hours with a brightness variation of 0.60 magnitude (U=2+).lcdb-Higgins-2011 With a period above 100 hours, Mitchella is one of few hundred slow rotators currently known to exists. Its high brightness amplitude is indicative for a somewhat elongated shape. Also, the photometric observations suggested that it might be in a tumbling motion.lcdb-Higgins-2011 Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Mitchella measures between 6.449 and 7.00 kilometers in diameter and its surface has an albedo between 0.26 and 0.353. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the Flora family's parent body – and calculates a diameter of 7.47 kilometers based on an absolute magnitude of 12.8. Naming This minor planet was named after Maria Mitchell (1818–1889), an American professor of astronomy and director of Vassar College Observatory. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 131). The lunar crater Mitchell is also named in her honor, as is the Maria Mitchell Observatory in, Massachusetts, United States. Notes lcdb-Higgins-2011 Higgins (2011) web: rotation period 118.7 0.5 hours with a brightness amplitude of 0.60 mag. Summary figures for (1455) Mitchella at LCDB and David Higgins' archived website References 30em 2017-03-29 last obs. JPL Small-Body Database Browser: 1455 Mitchella (1937 LF) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001455 Jet Propulsion Laboratory 21 October 2017 Dictionary of Minor Planet Names – (1455) Mitchella Schmadel Lutz D. Springer Berlin Heidelberg 117 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1456 (1455) Mitchella 1455 Mitchella (1937 LF) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1455 21 October 2017 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 http://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 118745497 21 October 2017 Asteroid 1455 Mitchella – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1455 29 October 2019 1455 21 October 2017 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 9341381 21 October 2017 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 free 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 35447010 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 53493339 21 October 2017 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 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1455 1454 Kalevala 1455 1456 Saldanha 001455 Category:Discoveries by Alfred Bohrmann Category:Named minor planets 001455 19370605