1578 Kirkwood

Asteroid in the Hilda group October 2019 yes 1578 Kirkwood #D6D6D6 001578-asteroid shape model (1578) Kirkwood.png Shape model of Kirkwood from its lightcurve Indiana University(Indiana Asteroid Program) Goethe Link Obs. 10 January 1951 (1578) Kirkwood 1951 AT1944 DF1949 TF1952 FK Daniel Kirkwood(American astronomer) main-belt(outer)Hilda 4 September 2017 (JD 2458000.5) 0 73.37 yr (26,797 days) 4.8617 AU 2.9855 AU 3.9236 AU 0.2391 7.77 yr (2,839 days) 195.23° 0.1268 ms / day 0.8085° 74.002° 1.7729° 0.4366 AU 47.077 0.315 km51.88 1.8 km57.14 1.27 km 12.518 0.002 h17.9 0.1 hlcdb-Slyusarev-2012 0.044 0.0020.0517 0.0040.063 0.005 Tholen DDB–V 0.788U–B 0.276 10.2610.41 0.50 1578 Kirkwood, provisional designation 1951 AT, is a Hilda asteroid from the outermost regions of the asteroid belt, approximately 52 kilometers in diameter. It was discovered on 10 January 1951, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States. The asteroid was named after American astronomer Daniel Kirkwood. Orbit and classification Kirkwood belongs to the orbital Hilda group, which is located outermost part of the main belt. Asteroids in this dynamical group have semi-major axis between 3.7 and 4.2 AU and stay in a 3:2 resonance with the gas giant Jupiter. Kirkwood, however, is a background asteroid and not a member of the (collisional) Hilda family (101). It orbits the Sun at a distance of 3.0–4.9 AU once every 7 years and 9 months (2,839 days). Its orbit has an eccentricity of 0.24 and an inclination of 1° with respect to the ecliptic. The asteroid was first observed as 1944 DF at Turku Observatory in February 1944. The body's observation arc begins with its observation as 1949 TF at Heidelberg Observatory in October 1949, fifteen months prior to its official discovery observation at Goethe Link. Physical characteristics In the Tholen classification, Kirkwood is a dark D-type asteroid. It is also characterized as a D-type by PanSTARRS photometric survey. Rotation period In October 2012, a rotational lightcurve of Kirkwood was obtained from photometric observations at the Etscorn Campus Observatory (719) in New Mexico, United States. Lightcurve analysis gave a rotation period of 12.518 hours with a brightness variation of 0.05 magnitude (U=2). Another lightcurve gave a period of 17.9 hours and an amplitude of 0.22 magnitude (U=2).lcdb-Slyusarev-2012 Diameter and albedo According to the surveys carried out by the Japanese Akari satellite, the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer and the Infrared Astronomical Satellite IRAS, Kirkwood measures between 47.077 and 57.14 kilometers in diameter and its surface has an albedo between 0.044 and 0.063. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0517 and a diameter of 51.88 kilometers based on an absolute magnitude of 10.26. Naming This minor planet was named in memory of American astronomer Daniel Kirkwood (1814–1895), long-time professor of mathematics at Indiana University. He discovered the Kirkwood gaps, which are gaps in the distribution of the mean distances of the minor planets in the asteroid belt. Kirkwood was the Indiana Asteroid Program's first numbered discovery.note-fist-discovery The official 1578 naming citation was published by the Minor Planet Center in March 1952 (M.P.C. 738). The lunar crater Kirkwood was also named in the astronomer's honor. Notes lcdb-Slyusarev-2012 Slyusarev (2012) web; for (1578) Kirkwood: rotation period of 17.9 hours with a brightness amplitude of 0.22 mag. Summary figures given at the LCDB note-fist-discovery Although the asteroid 1575 Winifred, also discovered by the Indiana Asteroid Program, has both a lower number and an earlier discovery date (20 April 1950) than 1578 Kirkwood References 30em 2017-07-04 last obs. JPL Small-Body Database Browser: 1578 Kirkwood (1951 AT) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001578 Jet Propulsion Laboratory 21 September 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 125 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1579 (1578) Kirkwood 1578 Kirkwood (1951 AT) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1578 21 September 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. 2009 Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S 6 T. Grav A. K. Mainzer J. Bauer J. Masiero T. Spahr R. S. McMillan R. Walker R. Cutri E. Wright P. R. Eisenhardt E. Blauvelt E. DeBaun D. Elsbury T. Gautier S. Gomillion E. Hand A. Wilkins January 2012 WISE/NEOWISE Observations of the Hilda Population: Preliminary Results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...744..197G The Astrophysical Journal 744 2 15 2012ApJ...744..197G 10.1088/0004-637X/744/2/197 1110.0283 44000310 21 September 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 – IRAS-A-FPA-3-RDR-IMPS-V6.0 12 2004PDSS...12.....T 17 October 2019 Asteroid 1578 Kirkwood – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1578 29 October 2019 1578 21 September 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 (online, AcuA catalog p. 153) Daniel A. III Klinglesmith Jesse Hanowell Ethan Risley Janek Turk Angelica Vargas Curtis Alan Warren April 2013 Asteroid Synodic Periods from Etscorn Campus Observatory http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40...65K The Minor Planet Bulletin 40 2 65–67 1052-8091 2013MPBu...40...65K 21 September 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 21 September 2017 External links Asteroid (1578) Kirkwood at RASC 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/20241208174218/http://obswww.unige.ch/~behrend/page_cou.html 8 December 2024 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1578 1577 Reiss 1578 1579 Herrick 001578 001578 Category:Named minor planets 001578 19510110