1428 Mombasa

Main-belt asteroid October 2019 yes 1428 Mombasa #D6D6D6 5 July 1937 C. Jackson Johannesburg Obs. (1428) Mombasa 1937 NO1933 WO1949 FA1957 YZ Mombasa (city, port) main-belt(middle) 16 February 2017 (JD 2457800.5) 0 82.74 yr (30,219 days) 3.2039 AU 2.4154 AU 2.8096 AU 0.1403 4.71 yr (1,720 days) 263.81° 0.2093 ms / day 17.305° 115.72° 252.61° 52.464 0.268 km53.35 13.28 km55.34 0.70 km56.63 2.0 km56.83 km (derived)57.59 19.41 km62.45 0.73 km127.203 29.18 km 16.67 0.01 hLCDB-Stephens-201217.12 0.01 h17.6 0.2 h 0.0010 0.00990.0240 0.0020.025 0.0010.038 0.0040.04 0.040.0415 (derived)0.06 0.06 SMASS = XcPC 9.95 0.7410.2010.2710.310.9 1428 Mombasa, provisional designation 1937 NO, is a dark asteroid from the middle region of the asteroid belt, approximately 56 kilometers in diameter. It was discovered on 5 July 1937, by English-born South African astronomer Cyril Jackson at Johannesburg Observatory, South Africa, and later named after Mombasa, Kenya. Orbit and classification Mombasa orbits the Sun at a distance of 2.4–3.2 AU once every 4 years and 9 months (1,720 days). Its orbit has an eccentricity of 0.14 and an inclination of 17° with respect to the ecliptic. Mombasa was first identified as 1933 WO at Lowell Observatory, extending the body's observation arc by 4 years prior to its official discovery at Johannesburg. Physical characteristics Rotation period American astronomer Robert Stephens obtained a rotational lightcurve of Mombasa in June 2012. Light-curve analysis gave a rotation period of 16.67 hours with a brightness variation of 0.16 magnitude (U=2+).LCDB-Stephens-2012 Previous lightcurves were obtained by French amateur astronomer René Roy in February 2006 (17.6 hours, Δ0.15 mag; U=2), as well as by Scot Hawkins and Richard Ditteon at Oakley Observatory in May 2007 (17.12 hours, Δ0.25 mag; U=2). Spectral type, diameter and albedo On the SMASS taxonomic scheme, Mombasa is a Xc-type, an intermediate between the carbonaceous C and X-type, while it is also described as a darker P-type asteroid. According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Mombasa measures between 52.46 and 62.45 kilometers in diameter, ignoring a preliminary result of 127 km, and its surface has an albedo of 0.025 and 0.06. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0415 and a diameter of 56.83 kilometers with an absolute magnitude of 10.3. Naming This minor planet was named after Mombasa, chief-port and second largest city of Kenya on the coast of East Africa. The official 1428 naming citation was published by the Minor Planet Center in April 1953 (M.P.C. 909). Notes LCDB-Stephens-2012 Stephens (2012) web: rotation period 16.67 0.01 hours with a brightness amplitude of 0.16 mag. Notes: "A half-period of 8.38 h cannot be formally excluded". Summary figures at http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1428%7CMombasa Collaborative Asteroid Lightcurve Link (CALL) for (1428) Mombasa References 30em 2016-08-13 last obs. JPL Small-Body Database Browser: 1428 Mombasa (1937 NO) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001428 https://web.archive.org/web/20200820040755/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001428 dead 20 August 2020 Jet Propulsion Laboratory 6 January 2017 Dictionary of Minor Planet Names – (1428) Mombasa Schmadel Lutz D. Springer Berlin Heidelberg 115 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1429 (1428) Mombasa 1428 Mombasa (1937 NO) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1428 6 January 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S Asteroids and comets rotation curves – (1428) Mombasa Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001428 6 January 2017 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001428 dead 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 119293330 6 January 2017 1428 6 January 2017 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 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) 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 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 46350317 6 January 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 6 January 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 Scot Hawkins Richard Ditteon March 2008 Asteroid Lightcurve Analysis at the Oakley Observatory - May 2007 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35....1H The Minor Planet Bulletin 35 1 1–4 1052-8091 2008MPBu...35....1H 6 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 53493339 6 January 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 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 1428 1427 Ruvuma 1428 1429 Pemba 001428 Category:Discoveries by Cyril Jackson (astronomer) Category:Named minor planets 001428 19370705