14974 Počátky

14974 Pocatky
Discovery [1]
Discovered by M. Tichý
Discovery site Kleť Obs.
Discovery date 22 September 1997
Designations
MPC designation 14974 Pocatky
Named after
 Počátky (Czech town)[2]
1997 SK1 · 1991 FF2
main-belt · (middle) [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 24.96 yr (9,115 days)  
Aphelion 2.8547 AU
Perihelion 2.4065 AU
2.6306 AU
Eccentricity 0.0851
4.27 yr (1,558 days)
321.24°
0° 13m 51.24s / day
Inclination 3.8739°
338.46°
158.58°
Physical characteristics
Dimensions 4.040±0.831 km[4]
4.88 km (calculated)[3]
21.7277±0.0320 h[5]
21.7079±0.0320 h[5]
0.2261±0.0995[4]
0.10 (assumed)[3]
S [3]
14.2[1][4]
14.67[3]
14.225±0.009 (R)[5]
14.226±0.005 (R)[5]
14.43±0.19[6]

    14974 Pocatky, provisional designation 1997 SK1, is a stony asteroid from the middle region of the asteroid belt, approximately 4 kilometers in diameter. It was discovered by Czech astronomer Miloš Tichý at Kleť Observatory in the Czech Republic on 22 September 1997.[7]

    The S-type asteroid orbits the Sun at a distance of 2.4–2.9 AU once every 4 years and 3 months (1,558 days). Its orbit has an eccentricity of 0.09 and an inclination of 4° with respect to the plane of the ecliptic.[1] Two rotational light-curves were obtained at the U.S Palomar Transient Factory, California, based on photometric observations made in 2010 and 2012. The light-curves gave a rotation period of 21.7277±0.0320 and 21.7079±0.0320 hours with a brightness amplitude of 0.57 and 0.68 in magnitude, respectively (U=2).[5]

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 4.0 kilometers in diameter and its surface has an albedo of 0.23,[4] while the Collaborative Asteroid Lightcurve Link (CALL) assumes an untypically low albedo for stony asteroids of 0.10, and thus calculates a larger diameter of 4.9 kilometers.[3]

    The minor planet was named after the south Bohemian town of Počátky, Czech Republic. It is the birthplace of the discoverer Miloš Tichý.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 14974 Pocatky (1997 SK1)" (2016-03-03 last obs.). Jet Propulsion Laboratory. Retrieved April 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (14974) Počátky. Springer Berlin Heidelberg. p. 819. ISBN 978-3-540-00238-3. Retrieved April 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (14974) Pocatky". Asteroid Lightcurve Database (LCDB). Retrieved April 2016.
    4. 1 2 3 4 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. Retrieved April 2016.
    5. 1 2 3 4 5 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved April 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 April 2016.
    7. ↑ "14974 Pocatky (1997 SK1)". Minor Planet Center. Retrieved April 2016.

    External links


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