1823 Gliese

Stony main-belt asteroid October 2019 yes 1823 Gliese #D6D6D6 4 September 1951 K. Reinmuth Heidelberg Obs. (1823) Gliese 1951 RD1944 MC1948 VH1950 BL1950 DR1950 EF1954 NE1970 EU 21971 SE 1 Wilhelm Gliese(German astronomer) main-beltFlora 4 September 2017 (JD 2458000.5) 0 68.36 yr (24,967 days) 2.5268 AU 1.9244 AU 2.2256 AU 0.1353 3.32 yr (1,213 days) 37.708° 0.2968 ms / day 2.8919° 310.01° 296.68° 8.19 km (calculated)8.439 0.3249.544 0.025 km 4.4864 0.0006 hPravec-20144.488 0.003 h 0.1349 0.01520.189 0.0460.24 (assumed) S 12.55 0.4912.612.9 1823 Gliese, provisional designation 1951 RD, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 4 September 1951, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. The asteroid was named after German astronomer Wilhelm Gliese. Orbit and classification The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 1.9–2.5 AU once every 3 years and 4 months (1,213 days). Its orbit has an eccentricity of 0.14 and an inclination of 3° with respect to the ecliptic. The first unused observations date back to 1944 at Johannesburg Observatory, when it was identified as 1944 MC. The first used precovery was taken at the discovering Heidelberg observatory in 1950, extending the asteroid's observation arc by one year prior to its official discovery. Physical characteristics Rotation period A rotational lightcurve of this asteroid was obtained from photometric observations made by Czech astronomer Petr Pravec at the Ondřejov Observatory in August 2014. The lightcurve gave a well-defined rotation period of 4.4864 0.0006 hours with a brightness variation of 0.27 in magnitude (U=3).Pravec-2014 One month later, in September 2014, a second lightcurve by American astronomer Brian Warner at his Palmer Divide Observatory, Colorado, gave a concurring period of 4.488 0.003 hours with an amplitude of 0.23 in magnitude (U=3). Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, the asteroid measures 8.4 and 9.5 kilometers in diameter and its surface has an albedo of 0.189 and 0.135, respectively, while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this asteroid's orbital family – and calculates a diameter of 8.2 kilometers with an absolute magnitude of 12.6. Naming This minor planet was named after German astronomer Wilhelm Gliese (1915–1993) at the Astronomisches Rechen-Institut. Gliese is widely known for having compiled about 1,000 stars located within 25 parsecs of Earth into the Gliese Catalogue of Nearby Stars. The official 1823 naming citation was published by the Minor Planet Center on 18 April 1977 (M.P.C. 4156). A large number of Exoplanets derive their names form this star catalogue. Notes Pravec-2014 Pravec, P.; Wolf, M.; Sarounova, L. (2014) web publication. Summary figures listed at the Light Curve Data Base – (1823) Gliese References 30em 2017-03-15 last obs. JPL Small-Body Database Browser: 1823 Gliese (1951 RD) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001823 Jet Propulsion Laboratory 8 June 2017 Dictionary of Minor Planet Names – (1823) Gliese Schmadel Lutz D. Springer Berlin Heidelberg 146 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1824 (1823) Gliese 1823 Gliese (1951 RD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1823 16 May 2016 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 1823 16 May 2016 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 16 May 2016 Warner, Brian D. January 2015 Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 June–October http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015MPBu...42...54W The Minor Planet Bulletin 42 1 54–60 1052-8091 2015MPBu...42...54W 4 November 2015 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 16 May 2016 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 8 December 2016 External links Gliese Catalogue of Nearby Stars https://web.archive.org/web/20120830055053/http://www.ari.uni-heidelberg.de/datenbanken/aricns/gliese.htm 30 August 2012 , Heidelberg University 3Kn3s98KRYw The Palmer Divide Observatory: Tour given by Brian Warner (time 4:03 min.) 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 1823 1822 Waterman 1823 1824 Haworth 001823 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19510904