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3628 Božněmcová, provisional designation 1979 WD, is a rare O-type asteroid from the middle region of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 25 November 1979, by Czech astronomer Zdeňka Vávrová at Kleť Observatory in the Czech Republic. It is named for Czech writer Božena Němcová.

Orbit and classification

Božněmcová orbits the Sun in the central main-belt at a distance of 1.8–3.3 AU once every 4.04 years (1,477 days). Its orbit has an eccentricity of 0.30 and an inclination of 7° with respect to the ecliptic. It was first identified as 1930 MQ at Lowell Observatory in 1930, extending the body's observation arc by 49 years prior to its official discovery observation at Klet.

Physical characteristics

In the SMASS taxonomy, Božněmcová is a bright O-type asteroid, a rare group with spectra that best fits those of the L6 and LL6 ordinary chondrite-type meteorites.

Rotation period

In September 2007, a rotational lightcurve of Božněmcová was obtained from photometric observations by American astronomer Brian Warner at his Palmer Divide Observatory in Colorado. Lightcurve analysis gave a well-defined rotation period of 3.335410 hours with a low brightness amplitude of 0.09 magnitude (U=3).

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Božněmcová measures between 5.40 and 8.14 kilometers in diameter, and its surface has an albedo between 0.256 and 0.359. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.18 kilometers at an absolute magnitude of 12.8, as the lower the albedo (reflectivity), the larger the body's diameter for an unchanged brightness.

Naming

This minor planet was named in memory of Božena Němcová (1820–1862), a Czech writer, author of the novella The Grandmother (Czech: Babička), the most frequently read book in Czech literature. The official naming citation was published by the Minor Planet Center on 4 June 1993 (M.P.C. 22245).

References

1. ^ "JPL Small-Body Database Browser: 3628 Boznemcova (1979 WD)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 19 June 2017.
2. ^ Schmadel, Lutz D. (2007). "(3628) Božněmcová". Dictionary of Minor Planet Names – (3628) Božněmcová. Springer Berlin Heidelberg. p. 305. doi:10.1007/978-3-540-29925-7_3627. ISBN 978-3-540-00238-3.
3. ^ "LCDB Data for (3628) Božněmcová". Asteroid Lightcurve Database (LCDB). Retrieved 13 March 2017.
4. ^ Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.
5. ^ Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. S2CID 35447010.
6. ^ Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. S2CID 118745497. Retrieved 14 November 2016.
7. ^ Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
8. ^ Warner, Brian D. (June 2008). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June - October 2007". The Minor Planet Bulletin. 35 (2): 56–60. Bibcode:2008MPBu...35...56W. ISSN 1052-8091. Retrieved 13 March 2017.
9. ^ 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. S2CID 53493339. Retrieved 13 March 2017.
10. ^ "3628 Boznemcova (1979 WD)". Minor Planet Center. Retrieved 13 March 2017.
11. Bus, S. J.; Binzel, R. P. (2002). "Phase II of the Small Main-Belt Asteroid Spectroscopic Survey A Feature-Based Taxonomy" (PDF). Icarus. 158 (1): 146–177. Bibcode:2002Icar..158..146B. doi:10.1006/icar.2002.6856.
12. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 13 March 2017.

External links

• Lightcurve plot of 3628 Boznemcova, Palmer Divide Observatory, B. D. Warner (2007)
• Catchall Catalog of Minor Planets
• 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
• 3628 Božněmcová at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 3628 Božněmcová at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

• Minor planet object articles (numbered)
• Background asteroids
• Discoveries by Zdeňka Vávrová
• Named minor planets
• O-type asteroids (SMASS)
• Astronomical objects discovered in 1979
• Božena Němcová