1267 Geertruida

Asteroid October 2019 yes 1267 Geertruida #D6D6D6 H. van Gent Johannesburg Obs. 23 April 1930 (1267) Geertruida 1930 HD1926 GV1927 SH1930 LA1954 TM 11965 HB1965 JE Geertruid Hamerslag Pels(Sister of astronomer Gerrit Pels) main-belt(inner)background 4 September 2017 (JD 2458000.5) 0 91.55 yr (33,440 days) 2.9116 AU 2.0260 AU 2.4688 AU 0.1794 3.88 yr (1,417 days) 136.63° 0.2541 ms / day 4.7825° 24.390° 268.19° 15.621 4.700 km16.92 5.04 km17.16 0.30 km18.91 0.25 km20.92 0.60 km23.108 0.154 km23.41 1.4 km23.43 km (derived)23.572 0.153 km 5.50 h5.5087 0.0007 h 0.030 0.0020.0466 0.0060.0479 0.00620.0510 (derived)0.060 0.0040.06 0.010.0706 0.04880.09 0.070.095 0.014 C (assumed) 12.0012.1012.17 1267 Geertruida, provisional designation 1930 HD, is a carbonaceous background asteroid from the inner regions of the asteroid belt, approximately 20 kilometers in diameter. Discovered by astronomer Hendrik van Gent at Johannesburg Observatory in 1930, the asteroid was later named after Geertruid Pels, sister of Dutch astronomer Gerrit Pels. Discovery Geertruida was discovered on 23 April 1930, by Dutch astronomer Hendrik van Gent at the Union Observatory in Johannesburg, South Africa. Five nights later, it was independently discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 28 April 1930. The Minor Planet Center only recognizes the first discoverer. The asteroid was previously identified as 1926 GV at Heidelberg Observatory in April 1926. Orbit and classification Geertruida is a non-family asteroid from the main belt's background population. It orbits the Sun in the inner asteroid belt at a distance of 2.0–2.9 AU once every 3 years and 11 months (1,417 days; semi-major axis of 2.47 AU). Its orbit has an eccentricity of 0.18 and an inclination of 5° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Johannesburg in April 1930. Physical characteristics Geertruida is an assumed carbonaceous C-type asteroid, which agrees with its measured albedo (see below). Rotation period In 1977, a rotational lightcurve of Geertruida was obtained from photometric observations by Swedish astronomer Claes-Ingvar Lagerkvist at the Uppsala Southern Station in Australia. Lightcurve analysis gave a rotation period of 5.50 hours with a brightness amplitude of 0.5 magnitude (U=2). In October 2016, a refined period of 5.5087 hours with an amplitude of 0.35 magnitude (U=3) was obtained at the Oakley Southern Sky Observatory (E09). 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, Geertruida measures between 15.621 and 23.572 kilometers in diameter and its surface has an albedo between 0.030 and 0.095. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0510, typical for that of a carbonaceous asteroid, and a diameter of 23.43 kilometers based on an absolute magnitude of 12.0. Naming This minor planet was named by Dutch astronomer Gerrit Pels after his sister Geertruid (or Geertruida) Hamerslag Pels. Gerrit Pels, who was an assistant astronomer at Leiden Observatory, computed the body's orbit. The minor planet 1667 1667 Pels was named in his honor. The author of the Dictionary of Minor Planet Names, Lutz Schmadel learned about the meaning of this asteroid from Ingrid van Houten-Groeneveld, who was a long-time astronomer at Leiden Observatory. References 30em 2017-11-02 last obs. JPL Small-Body Database Browser: 1267 Geertruida (1930 HD) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001267 https://web.archive.org/web/20200918010545/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001267 18 September 2020 Jet Propulsion Laboratory 14 November 2017 Dictionary of Minor Planet Names – (1267) Geertruida Schmadel Lutz D. Springer Berlin Heidelberg 105 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1268 (1267) Geertruida 1267 Geertruida (1930 HD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1267 14 November 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 14 November 2017 Asteroid 1267 Geertruida – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1267 29 October 2019 1267 14 November 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 46350317 14 November 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 14 November 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 Joseph R. Masiero C. Nugent A. K. Mainzer E. L. Wright J. M. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett October 2017 NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos The Astronomical Journal 154 4 10 2017AJ....154..168M 10.3847/1538-3881/aa89ec 1708.09504 free 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 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 Lagerkvist, C. I. April 1979 A lightcurve survey of asteroids with Schmidt telescopes - Observations of nine asteroids during oppositions in 1977 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1979Icar...38..106L Icarus 38 1 106–114 1979Icar...38..106L 10.1016/0019-1035(79)90090-3 14 November 2017 Dylan Linville Hao Jiang Danielle Michalik Sydney Wilson Richard Ditteon July 2017 Lightcurve Analysis of Asteroids Observed at the Oakley Southern Sky Observatory: 2016 July - October http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2017MPBu...44..173L The Minor Planet Bulletin 44 3 173–176 1052-8091 2017MPBu...44..173L 14 November 2017 External links Uppsala Southern Station (USS) in Australia 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 1267 1266 Tone 1267 1268 Libya 001267 Category:Discoveries by Hendrik van Gent Category:Named minor planets 19300423