2055 Dvořák

2055 Dvořák
Discovery
Discovered by	L. Kohoutek
Discovery site	Bergedorf Obs.
Discovery date	19 February 1974
Designations
MPC designation	(2055) Dvořák
Pronunciation	/d(ə)ˈvɔːrʒɑːk, -ʒæk/; d(ə)-VOR-zha(h)k
Named after	Antonín Dvořák; (Czech composer)
Alternative designations	1974 DB
Minor planet category	Mars-crosser
Orbital characteristics
	Epoch 4 September 2017 (JD 2458000.5)
	Uncertainty parameter 0
Observation arc	42.37 yr (15,475 days)
Aphelion	3.0297 AU
Perihelion	1.5909 AU
Semi-major axis	2.3103 AU
Eccentricity	0.3114
Orbital period (sidereal)	3.51 yr (1,283 days)
Mean anomaly	101.49°
Mean motion	0° 16m 50.52s / day
Inclination	21.488°
Longitude of ascending node	340.44°
Argument of perihelion	244.12°
Physical characteristics
Dimensions	8.18 km (calculated)
Synodic rotation period	4.405±0.001 h; 4.4106±0.0001 h
Geometric albedo	0.20 (assumed)
Spectral type	S
Absolute magnitude (H)	12.8 · 12.81±0.05 · 13.27±0.65

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.^[3] It was named after Czech composer Antonín Dvořák.^[2]

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.^[1] The body's observation arc begins with its official discovery observation at Bergedorf in 1974.^[3]

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-).^[5]^[6]

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.^[4] Dvořák has not been surveyed by any of the space-based telescopes such as IRAS, Akari and WISE.^[1]^[4]

Naming

This minor planet was named after Czech composer Antonin Dvořák (1841–1904), one of the worldwide known Czech composers along with Bedřich Smetana.^[2] The official naming citation was published by the Minor Planet Center on 1 July 1979 (M.P.C. 4786).^[8]

References

^ ^a ^b ^c ^d ^e ^f "JPL Small-Body Database Browser: 2055 Dvorak (1974 DB)" (2016-07-03 last obs.). Jet Propulsion Laboratory. Retrieved 29 June 2017.
^ ^a ^b ^c 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.
^ ^a ^b ^c "2055 Dvorak (1974 DB)". Minor Planet Center. Retrieved 29 June 2017.
^ ^a ^b ^c ^d ^e ^f ^g "LCDB Data for (2055) Dvořák". Asteroid Lightcurve Database (LCDB). Retrieved 29 June 2017.
^ ^a ^b ^c 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.
^ ^a ^b 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.
^ 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.
^ 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

[jpldata-1] ^ ^a ^b ^c ^d ^e ^f "JPL Small-Body Database Browser: 2055 Dvorak (1974 DB)" (2016-07-03 last obs.). Jet Propulsion Laboratory. Retrieved 29 June 2017.

[springer-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.

[MPC-Dvořák-3] "2055 Dvorak (1974 DB)". Minor Planet Center. Retrieved 29 June 2017.

[lcdb-4] ^ ^a ^b ^c ^d ^e ^f ^g "LCDB Data for (2055) Dvořák". Asteroid Lightcurve Database (LCDB). Retrieved 29 June 2017.

[Mazzone-2014a-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.

[Oey-2014-6] 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.

[Veres-2015-7] 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.

[DoMP-Circular-dates-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.

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