3628 Božněmcová

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3628 Božněmcová
Discovery [1]
Discovered by Z. Vávrová
Discovery site Kleť Obs.
Discovery date 25 November 1979
MPC designation (3628) Boznemcova
Named after
Božena Němcová
(Czech writer)[2]
1979 WD · 1930 MQ
1962 JP · 1975 XT4
1978 JX · 1979 YB10
1985 CQ2
main-belt · (middle)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 86.76 yr (31,689 days)
Aphelion 3.2963 AU
Perihelion 1.7799 AU
2.5381 AU
Eccentricity 0.2987
4.04 yr (1,477 days)
0° 14m 37.32s / day
Inclination 6.8866°
Physical characteristics
Dimensions 5.40±1.17 km[4]
6.914±0.143 km[5][6]
8.14±0.34 km[7]
8.18 km (calculated)[3]
3.335410±0.000057 h[8]
0.20 (assumed)[3]
SMASS = O [1] · O[3][9]
12.60[5][7] · 12.8[1][3] · 13.05±0.34[9] · 13.11[4]

3628 Božněmcová, provisional designation 1979 WD, is a rare-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.[10] It is named for Czech writer Božena Němcová.[2]

Orbit and classification[edit]

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.[1] 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.[10]

Physical characteristics[edit]

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.[11]

Rotation period[edit]

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).[8]

Diameter and albedo[edit]

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.[4][5][6][7] 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.[3]


This minor planet was named in memory of Božena Němcová (1820–1862), a Czech writer, author of the novella The Grandma (Czech: Babička), the most frequently read book in Czech literature.[2] The official naming citation was published by the Minor Planet Center on 4 June 1993 (M.P.C. 22245).[12]


  1. ^ a b c d e "JPL Small-Body Database Browser: 3628 Boznemcova (1979 WD)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 19 June 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (3628) Božněmcová. Springer Berlin Heidelberg. p. 305. ISBN 978-3-540-00238-3. Retrieved 13 March 2017. 
  3. ^ a b c d e f "LCDB Data for (3628) Božněmcová". Asteroid Lightcurve Database (LCDB). Retrieved 13 March 2017. 
  4. ^ a b c d 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. Bibcode:2016AJ....152...63N. arXiv:1606.08923Freely accessible. doi:10.3847/0004-6256/152/3/63. Retrieved 13 March 2017. 
  5. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. Bibcode:2011ApJ...741...90M. arXiv:1109.6407Freely accessible. doi:10.1088/0004-637X/741/2/90. Retrieved 13 March 2017. 
  6. ^ a b c 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. Bibcode:2011ApJ...741...68M. arXiv:1109.4096Freely accessible. doi:10.1088/0004-637X/741/2/68. Retrieved 14 November 2016. 
  7. ^ a b c d 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" (PDF). Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 13 March 2017. 
  8. ^ a b 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. ^ a b 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. Bibcode:2015Icar..261...34V. arXiv:1506.00762Freely accessible. doi:10.1016/j.icarus.2015.08.007. Retrieved 13 March 2017. 
  10. ^ a b "3628 Boznemcova (1979 WD)". Minor Planet Center. Retrieved 13 March 2017. 
  11. ^ S. J. Bus and R. P. Binzel, Phase II of the Small Main-belt Asteroid Spectroscopy Survey: A feature-based taxonomy, Icarus, Vol. 158, pp. 146 (2002).
  12. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 13 March 2017. 

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