19763 Klimesh

19763 Klimesh
Discovery [1]
Discovered by NEAT
Discovery site Haleakala Obs.
Discovery date 18 June 2000
Designations
MPC designation 19763 Klimesh
Named after
 Matthew Klimesh
(JPL researcher)[2]
2000 MC · 1998 AX10
main-belt · Phocaea [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 30.53 yr (11,150 days)   
Aphelion 2.8644 AU (428.5 Gm)
Perihelion 1.9159 AU (286.6 Gm)
2.3901 AU (357.6 Gm)
Eccentricity 0.19842
3.70 yr (1,350 days)
56.215°
0° 16m 0.12s / day
Inclination 23.306°
287.21°
56.644°
Physical characteristics
Dimensions 7.270±0.138 km[4]
7.291 km[5]
7.29 km (taken)[3]
101 h[lower-alpha 1]
4.4178±0.0001 h[6]
0.1754±0.0464[4]
0.1635[5]
S [3]
12.9[1]
12.78±0.12[lower-alpha 1]
13.2[4]
13.27±0.13[3][5]
12.89±0.28[7]

    19763 Klimesh, provisional designation 2000 MC, is a stony Phocaea asteroid and slow rotator from the inner regions of the asteroid belt, about 7 kilometers in diameter. It was discovered on 18 June 2000, by NASA's and JPL's Near-Earth Asteroid Tracking program (NEAT) with the Maui Space Surveillance System (MSSS) at the U.S. Haleakala Observatory site on the island of Maui, Hawaii.[8]

    The S-type asteroid is a member of the Phocaea family, a group of asteroids with similar orbital characteristics.[3] It orbits the Sun at a distance of 1.9–2.9 AU once every 3 years and 8 months (1,350 days). Its orbit has an eccentricity of 0.20 and an inclination of 23° with respect to the ecliptic.[1] The asteroid's observation arc begins 15 years prior to its discovery, due to a precovery taken at the Australian Siding Spring Observatory in 1985.[8]

    It has a very long rotation period of 101 hours with a brightness amplitude of 0.67 in magnitude, as observed by Czech astronomer Petr Pravec at the Ondřejov Observatory during the body's 2011-opposition (U=2).[lower-alpha 1] At the same time an alternative analysis of a fragmentary light-curve analysis by Italian astronomer Silvano Casulli, however, only gave a period of 4.4 hours with an amplitude of 0.12 (U=1).[6] The body is possibly a "tumbler", that is, it might undergo a non-principal axis rotation.[3] According to the surveys carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid has a diameter of 7.3 kilometers with an albedo of 0.18 and 0.16, based on two different data sets.[4][5]

    The minor planet was named after JPL researcher Matthew Klimesh (b. 1968), developer of the compression algorithm used for handling the vast amount of data obtained by the discovering NEAT program. Since 1996 at JPL's Communications Systems and Research Section, his work includes data compression, rate–distortion theory and channel coding.[2]

    References

    1. 1 2 3 Pravec (2001) web: rotation period 101 hours with a brightness amplitude of 0.67 mag. Analysis is based on an absolute magnitude of 12.78±0.12.The assigns a Quality Code of 2 (U=2), which denotes a "good determination, pole likely correct to ±15-20°, but may be ambiguous with two or more solutions that are possible, or the sense of rotation is not determined". Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (19763) Klimesh
    1. 1 2 3 4 "JPL Small-Body Database Browser: 19763 Klimesh (2000 MC)" (2015-12-18 last obs.). Jet Propulsion Laboratory. Retrieved 11 April 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (19763) Klimesh. Springer Berlin Heidelberg. p. 859. ISBN 978-3-540-00238-3. Retrieved January 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (19763) Klimesh". Asteroid Lightcurve Database (LCDB). Retrieved January 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 January 2016.
    5. 1 2 3 4 Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved January 2016.
    6. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (19763) Klimesh". Geneva Observatory. Retrieved January 2016.
    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 April 2016.
    8. 1 2 "19763 Klimesh (2000 MC)". Minor Planet Center. Retrieved January 2016.

    External links


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