1677 Tycho Brahe

Asteroid April 2018 yes 1677 Tycho Brahe #D6D6D6 File:001677-asteroid shape model (1677) Tycho Brahe.png Tycho Brahe modeled from its lightcurve Y. Väisälä Turku Obs. 6 September 1940 (1677) Tycho Brahe 1940 RO1928 SP1935 FL1952 QN 11952 SD 1A916 UA Tycho Brahe(Danish astronomer) main-belt(middle)MariaEunomia 23 March 2018 (JD 2458200.5) 0 82.92 yr (30,285 d) 2.8037 AU 2.2607 AU 2.5322 AU 0.1072 4.03 yr (1,472 d) 130.28° 0.2446 ms / day 14.853° 337.91° 318.29° 8.90 0.72 km11.686 0.116 km11.784 0.093 km13.26 km (calculated) 3.89 0.06 h 0.21 (assumed)0.221 0.0310.2277 0.03880.466 0.090 SSDSS-MFB 11.7011.912.21 0.04 1677 Tycho Brahe, provisional designation 1940 RO, is a stony Marian asteroid from the central region of the asteroid belt, approximately 12 km mi off 2 us in diameter. It was discovered on 6 September 1940, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. The common stony S-type asteroid has a short rotation period of 3.89 hours. It was later named after Tycho Brahe, one of the fathers of astronomy. Classification and orbit When applying the hierarchical clustering method to its proper orbital elements, Tycho Brahe is a member of the Maria family (506), a large family of stony asteroids.23 Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Eunomia family (502), the largest family in the intermediate main belt with more than 5,000 members. It orbits the Sun in the central main-belt at a distance of 2.3–2.8 AU once every 4.03 years (1,472 days; semi-major axis of 2.53 AU). Its orbit has an eccentricity of 0.11 and an inclination of 15° with respect to the ecliptic. The asteroid was first observed as A916 UA at Bergedorf Observatory in October 1916, extending the body's observation arc by 24 years prior to its official discovery observation at Turku. Physical characteristics The asteroid has been characterized as a stony S-type by Pan-STARRS survey, and in the SDSS-MFB (Masi Foglia Binzel) taxonomy,SDSS-MFB which agree with the overall spectral type for members of the Maria family.23 Rotation period In July 2012, a rotational lightcurve of Tycho Brahe was obtained by Renata Violante and Martha Leake, that gave a short rotation period of 3.89 hours with a brightness variation of 0.38 magnitude (U=2+). Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Tycho Brahe measures 11.78 kilometers in diameter, and its surface has an albedo of 0.221 (revised 2014-figures). The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21, derived from the family's largest member and namesake, 15 Eunomia, and calculates a diameter of 13.26 kilometers, based on an absolute magnitude of 11.7. Naming This minor planet is named for the great Danish-born astronomer Tycho Brahe (1546–1601) an early forerunner and father of modern astronomy. He is known for his unprecedented precise measurements in the pre-telescopic era. The official 1677 naming citation was published by the Minor Planet Center on 15 October 1977 (M.P.C. 4236). Brahe is also honored by the prominent crater Tycho in the southern highlands of the Moon and by the Martian crater Tycho Brahe. The bright supernova, SN 1572, is also known as Tycho's Nova. Notes SDSS-MFB Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog (publication). SDSS-MFB (Masi Foglia Binzel) taxonomy (catalog). References 30em 2018-02-26 last obs. JPL Small-Body Database Browser: 1677 Tycho Brahe (1940 RO) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001677 Jet Propulsion Laboratory 25 April 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 133 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1678 (1677) Tycho Brahe 1677 Tycho Brahe (1940 RO) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1677 25 April 2018 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 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 Asteroid 1677 Tycho Brahe – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1677+Tycho+Brahe#Asteroid%201677%20Tycho%20BraheEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 9780816532131 1677 23 December 2016 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 The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 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 R. Violante M. A. Leake December 2012 Photometry and Lightcurve Analysis of 7 Main-Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012JSARA...7...41V Journal of the Southeastern Association for Research in Astronomy 7 41–44 2012JSARA...7...41V 23 December 2016 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 Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 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 Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1677 1676 Kariba 1677 1678 Hveen 001677 Category:Discoveries by Yrjö Väisälä Category:Named minor planets 19400906