1277 Dolores

Main-belt asteroid October 2019 yes 1277 Dolores #D6D6D6 001277-asteroid shape model (1277) Dolores.png Modelled shape of Dolores from its lightcurve G. Neujmin Simeiz Obs. 18 April 1933 (1277) Dolores 1933 HA1925 SE1929 NB1942 JA1951 PB Dolores Ibárruri(Spanish communists) main-belt(middle)background 4 September 2017 (JD 2458000.5) 0 84.05 yr (30,699 days) 3.3418 AU 2.0598 AU 2.7008 AU 0.2373 4.44 yr (1,621 days) 315.34° 0.2221 ms / day 6.9674° 247.04° 46.992° 23.72 7.44 km27.05 0.90 km27.64 2.2 km32.587 0.802 km32.59 0.80 km 17.19 0.01 h 0.063 0.0130.08 0.040.0879 0.0160.095 0.007 Tholen CSMASS CbCB–V 0.730U–B 0.378 11.0511.11 0.11 1277 Dolores (prov. designation: 1933 HA) is a carbonaceous background asteroid from the central regions of the asteroid belt, approximately 27 km mi off 2 us in diameter. It was discovered on 18 April 1933, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula. The asteroid was named after Spanish communist Dolores Ibárruri. Orbit and classification Dolores is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the central main belt at a distance of 2.1–3.3 AU once every 4 years and 5 months (1,621 days). Its orbit has an eccentricity of 0.24 and an inclination of 7° with respect to the ecliptic. The asteroid was first identified as 1925 SE at Simeiz Observatory in September 1925. The body's observation arc begins at Yerkes Observatory (or Simeiz) in June 1933, approximately 2 months after its official discovery observation. Naming This minor planet was named after Spanish communists Dolores Ibárruri (1895–1989). Known as "La Pasionária" (Passionflower), she co-founded the communist party in Spain in 1920, and lead the party while in exile. Dolores Ibárruri returned to Spain in 1977, and became a member of the parliament. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 117). Physical characteristics In the Tholen classification, Dolores is a carbonaceous C-type asteroid, while in the SMASS classification, it is classified as a Cb-subtype, that transitions to the brighter B-type asteroids. It has also been characterized as a C-type by Pan-STARRS photometric survey. Rotation period In July 2000, a rotational lightcurve of Dolores was obtained from photometric observations by American astronomer Robert Stephens. Lightcurve analysis gave a well-defined rotation period of 17.19 hours with a brightness amplitude of 0.45 magnitude (U=3), indicative of a somewhat elongated shape. Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Dolores measures between 23.72 and 32.59 kilometers in diameter and its surface has an albedo between 0.063 and 0.095. The Collaborative Asteroid Lightcurve Link adopts the result obtained by IRAS, that is, an albedo of 0.0879 and a diameter of 27.64 kilometers based on an absolute magnitude of 11.05. References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1277 Dolores (1933 HA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001277 Jet Propulsion Laboratory 25 October 2017 Dictionary of Minor Planet Names https://archive.org/details/dictionaryminorp00schm limited Schmadel Lutz D. Springer Berlin Heidelberg (1277) Dolores 105 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1278 1277 Dolores (1933 HA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1277 25 October 2017 Asteroid 1277 Dolores – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1277 29 October 2019 1277 25 October 2017 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. Cabrera November 2012 Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 25 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 25 October 2017 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 free (online, AcuA catalog p. 153) E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 October 2019 Stephens R. D. June 2001 Rotational Periods and Lightcurves of 1277 Dolores, 666 Desdemona and (7505) 1997 AM2 Minor Planet Bulletin http://www.minorplanet.info/MPB/issues/MPB_28-1.pdf 28 1 28–29 2001MPBu...28...28S 16 March 2020 13 February 2020 https://web.archive.org/web/20200213220314/http://www.minorplanet.info/MPB/issues/MPB_28-1.pdf dead 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 October 2017 External links Lightcurve Database Query (LCDB), at www.minorplanet.info 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 – Geneva Observatory, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1277 1276 Ucclia 1277 1278 Kenya 001277 Category:Discoveries by Grigory Neujmin Category:Named minor planets 001277) 001277 19330418