14968 Kubáček
Discovery[1]
Discovered byA. Galád
A. Pravda
Discovery siteModra Obs.
Discovery date23 August 1997
Designations
(14968) Kubáček
Named after
Dalibor Kubáček
(Slovak astronomer)[2]
1997 QG · 1987 DG3
1998 XT89
main-belt · (middle)[3]
background
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc29.29 yr (10,698 days)
Aphelion2.8129 AU
Perihelion2.3186 AU
2.5658 AU
Eccentricity0.0963
4.11 yr (1,501 days)
201.00°
0° 14m 23.28s / day
Inclination5.4432°
150.32°
296.81°
Physical characteristics
Dimensions4.71 km (calculated)[3]
4.81±0.23 km[4]
4.89±0.01 h[5]
0.20 (assumed)[3]
0.210±0.046[4]
S[3]
13.90[4] · 14.0[1][3] · 14.20±0.12[6]

    14968 Kubáček, provisional designation 1997 QG, is a stony background asteroid from the middle region of the asteroid belt, approximately 5 kilometers in diameter. The asteroid was discovered on 23 August 1997, by Slovak astronomers Adrián Galád and Alexander Pravda at Modra Observatory, Slovakia.[7] It was named for Slovak astronomer Dalibor Kubáček.[2]

    Orbit and classification

    Kubáček orbits the Sun in the central main-belt at a distance of 2.3–2.8 AU once every 4 years and 1 month (1,501 days). Its orbit has an eccentricity of 0.10 and an inclination of 5° with respect to the ecliptic.[1]

    Its observation arc begins 10 years prior to its official discovery observation, with its identification as 1987 DG3 at the French Caussols Observatory in February 1987.[7]

    Physical characteristics

    Rotation period

    A rotational lightcurve of Kubáček was obtained from photometric observations made by the discovering astronomer Adrián Galád at Modra Observatory in April 2008. The lightcurve showed a rotation period of 4.89 hours with a brightness variation of 0.48 in magnitude (U=3-).[5]

    Diameter and albedo

    According to the survey carried out by NASA's space-based Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Kubáček measures 4.8 kilometers in diameter and its surface has an albedo of 0.21,[4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 4.7 kilometers.[3]

    Naming

    This minor planet was named in honor of astronomer Dalibor Kubáček (born 1957), who explored the coma of comets at the Slovak Academy of Sciences in Bratislava. He readily instructed the peculiar methods of image processing to students and friends, as well as to the discoverers of this minor planet.[2] The official naming citation was published by the Minor Planet Center on 27 April 2002 (M.P.C. 45339).[8]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 14968 Kubacek (1997 QG)" (2016-06-08 last obs.). Jet Propulsion Laboratory. Retrieved 26 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(14968) Kubáček". Dictionary of Minor Planet Names – (14968) Kubáček. Springer Berlin Heidelberg. p. 819. doi:10.1007/978-3-540-29925-7_9070. ISBN 978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (14968) Kubacek". Asteroid Lightcurve Database (LCDB). Retrieved 17 May 2016.
    4. 1 2 3 4 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 17 May 2016.
    5. 1 2 Galad, Adrian; Kornos, Leonard; Vilagi, Jozef (January 2010). "An Ensemble of Lightcurves from Modra". The Minor Planet Bulletin. 37 (1): 9–15. Bibcode:2010MPBu...37....9G. ISSN 1052-8091. Retrieved 17 May 2016.
    6. ↑ 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 17 May 2016.
    7. 1 2 "14968 Kubacek (1997 QG)". Minor Planet Center. Retrieved 6 April 2016.
    8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 May 2016.
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