13474 Vʹyus

Main-belt asteroid January 2019 yes 13474 Vʹyus #D6D6D6 T. Smirnova Crimean Astrophysical Obs. 29 August 1973 (13474) Vʹyus 1973 QO 11956 SA1990 RT 4 Yurij Sergeevich Vasil'ev(Rector of SPbSTU) main-belt(middle)background 27 April 2019 (JD 2458600.5) 0 61.56 yr (22,485 d) 3.3863 AU 1.8591 AU 2.6227 AU 0.2911 4.25 yr (1,551 d) 267.15° 0.2320 ms / day 7.8141° 317.29° 36.160° 6.922 0.351 km7.876 0.701 km 6.587 0.001 h 0.113 0.0220.147 0.020 S/C (assumed) 13.513.7 13474 Vʹyus, provisional designation 1973 QO 1, is a background asteroid from the central asteroid belt, approximately 7 km mi off 2 us in diameter. It was discovered on 29 August 1973, by Soviet astronomer Tamara Smirnova at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula. The asteroid has a rotation period of 6.6 hours and is likely elongated in shape. It was named after Yurij Sergeevich Vasil'ev, rector of the former Saint Petersburg State Technical University in Russia. Orbit and classification Vʹyus is a non-family asteroid from the main belt's background population. It orbits the Sun in the central asteroid belt at a distance of 1.9–3.4 AU once every 4 years and 3 months (1,551 days; semi-major axis of 2.62 AU). Its orbit has an eccentricity of 0.29 and an inclination of 8° with respect to the ecliptic. The body's observation arc begins with its first identification as 1956 SA at Goethe Link Observatory in September 1956, almost 17 years prior to its official discovery observation at Nauchnyj. Naming This minor planet was named after Yurij Sergeevich Vasil'ev (Yurij Vasilyev; born 1929), expert in hydropower engineering and rector of the Saint Petersburg State Technical University (SPbSTU), now known as the Peter the Great St. Petersburg Polytechnic University in Russia. The name is formed by putting the surname first and then concatenating the three Cyrillic letters that form his initials — Vasil'ev Yurij Sergeevich, ВЮС. The official 13474 naming citation was published by the Minor Planet Center on 27 April 2002 (M.P.C. 45338). Physical characteristics The asteroid's spectral type is unknown. The Lightcurve Data Base assumes an S- or C-type to be equally likely, using an averaged value for its albedo (see below).lcdb-S/C-type Rotation period In September 2007, a rotational lightcurve of Vʹyus was obtained from photometric observations by Maurice Clark at the Montgomery College Observatory in Maryland, United States. Lightcurve analysis gave a well-defined rotation period of 6.587 hours with a brightness amplitude of 0.85 magnitude (U=3). A high brightness amplitude typically indicates that the body has an elongated rather than spherical shape. Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Vʹyus measures 6.922 and 7.876 kilometers in diameter and its surface has an albedo of 0.147 and 0.113, respectively. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 – a compromise value between the stony (0.20) and carbonaceous (0.057) asteroid's, both abundant in the main belt's central region – and calculates a diameter of 7.65 kilometers based on an absolute magnitude of 13.7. Notes lcdb-S/C-type Asteroid Lightcurve Data Base (LCDB) – 2. Taxonomic Class, orbital class, and albedo. The LCDB generically assumes an S/C-type with an albedo of 0.10 for non-family main belt asteroids with a semi-major axis between 2.6 and 2.7. References 30em 2018-04-20 last obs. JPL Small-Body Database Browser: 13474 Vʹyus (1973 QO1) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013474 Jet Propulsion Laboratory 16 January 2019 Dictionary of Minor Planet Names – (13474) Vʹyus Schmadel Lutz D. Springer Berlin Heidelberg 800 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_8828 (13474) Vʹyus 13474 Vʹyus (1973 QO1) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=13474 16 January 2019 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 19 October 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 19 October 2017 Asteroid 13474 Vʹyus Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=13474+V'yus 16 January 2019 October 2026 InternetArchiveBot Asteroid (13474) Vʹyus – Proper elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=13474&pc=1.1.6 16 January 2019 13474 19 October 2017 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 Clark, Maurice October 2008 Asteroid Lightcurve Observations http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35..152C The Minor Planet Bulletin 35 4 152–154 1052-8091 2008MPBu...35..152C 19 October 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 Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center 13474 13473 Hokema 13474 13475 Orestes 013474 Category:Discoveries by Tamara Mikhaylovna Smirnova V'yus 19730829