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2055 Dvořák, provisional designation 1974 DB, is an eccentric asteroid and sizable Mars-crosser from the innermost regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 19 February 1974, by Czech astronomer Luboš Kohoutek at the Bergedorf Observatory in Hamburg, Germany. It was named after Czech composer Antonín Dvořák.

Classification and orbit

Dvořák is a Mars-crossing asteroid, as it crosses the orbit of Mars at 1.666 AU. It orbits the Sun at a distance of 1.6–3.0 AU once every 3 years and 6 months (1,283 days). Its orbit has an eccentricity of 0.31 and an inclination of 21° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Bergedorf in 1974.

Physical characteristics

Lightcurves

In July 2013, two rotational lightcurves of Dvořák were obtained from photometric observations by Julian Oey at the Blue Mountain Observatory (Q68), Australia, and by a collaboration of astronomers in Argentina. Lightcurve analysis gave a concurring rotation period of 4.405 and 4.4106 hours, respectively, both with a brightness variation of 0.17 magnitude (U=3-/3-).

Diameter and albedo estimates

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.18 kilometers based on an absolute magnitude of 12.8. Dvořák has not been surveyed by any of the space-based telescopes such as IRAS, Akari and WISE.

Naming

This minor planet was named after Czech composer Antonin Dvořák (1841–1904), one of the worldwide known Czech composers along with Bedřich Smetana. The official naming citation was published by the Minor Planet Center on 1 July 1979 (M.P.C. 4786).

References

1. ^ "JPL Small-Body Database Browser: 2055 Dvorak (1974 DB)" (2016-07-03 last obs.). Jet Propulsion Laboratory. Retrieved 29 June 2017.
2. ^ Schmadel, Lutz D. (2007). "(2055) Dvořák". Dictionary of Minor Planet Names – (2055) Dvořák. Springer Berlin Heidelberg. p. 166. doi:10.1007/978-3-540-29925-7_2056. ISBN 978-3-540-00238-3.
3. ^ "2055 Dvorak (1974 DB)". Minor Planet Center. Retrieved 29 June 2017.
4. ^ "LCDB Data for (2055) Dvořák". Asteroid Lightcurve Database (LCDB). Retrieved 29 June 2017.
5. ^ Mazzone, Fernando; Colazo, Carlos; Mina, Federico; Melia, Raul; Spagnotto, Julio; Bernal, Alejandro (January 2014). "Collaborative Asteroid Photometry and Lightcurve Analysis at Observatories OAEGG, OAC, EABA, and OAS". The Minor Planet Bulletin. 41 (1): 17–19. Bibcode:2014MPBu...41...17M. ISSN 1052-8091. Retrieved 29 June 2017.
6. ^ Oey, Julian (October 2014). "Lightcurve Analysis of Asteroids from Blue Mountains Observatory in 2013". The Minor Planet Bulletin. 41 (4): 276–281. Bibcode:2014MPBu...41..276O. ISSN 1052-8091. Retrieved 29 June 2017.
7. Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 29 June 2017.
8. Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 2055 Dvořák at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 2055 Dvořák at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

• Minor planet object articles (numbered)
• Mars-crossing asteroids
• Discoveries by Luboš Kohoutek
• Named minor planets
• Antonín Dvořák
• Astronomical objects discovered in 1974