14832 Alechinsky

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14832 Alechinsky
Discovery [1]
Discovered by E. W. Elst
Discovery site La Silla Obs.
Discovery date 27 August 1987
Designations
MPC designation (14832) Alechinsky
Named after
Pierre Alechinsky
(Belgian painter)[2]
1987 QC3 · 1994 PY32
main-belt · Flora[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 29.68 yr (10,842 days)
Aphelion 2.5769 AU
Perihelion 2.0099 AU
2.2934 AU
Eccentricity 0.1236
3.47 yr (1,269 days)
190.60°
0° 17m 1.68s / day
Inclination 5.7270°
307.44°
77.963°
Physical characteristics
Dimensions 3.92 km (calculated)[3]
4.359±0.176 km[4][5]
8.07±0.02 h[6]
9.5831±0.1453 h[7]
0.194±0.016[4][5]
0.24 (assumed)[3]
S[3]
14.02±0.84 (R)[6] · 14.2[1][3][4] · 14.462±0.010 (R)[7]

14832 Alechinsky, provisional designation 1987 QC3, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 27 August 1987, by Belgian astronomer Eric Elst at ESO's La Silla Observatory site in northern Chile.[8] The asteroid was named after Belgian painter Pierre Alechinsky.[2]

Orbit and classification[edit]

Alechinsky is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.6 AU once every 3 years and 6 months (1,269 days). Its orbit has an eccentricity of 0.12 and an inclination of 6° with respect to the ecliptic.[1] The asteroid's observation arc begins in 1987, as no precoveries had been taken prior to its discovery.[8]

Physical characteristics[edit]

Diameter and albedo[edit]

According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Alechinsky measures 4.4 kilometers in diameter and its surface has an albedo of 0.194,[4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – which derives from 8 Flora, the largest member and namesake of this orbital family – and calculates a diameter of 3.9 kilometers with an absolute magnitude of 14.2.[3]

Rotation period[edit]

In February 2013, two rotational lightcurves of Alechinsky were obtained from photometric observations made at the U.S. Palomar Transient Factory, California. They gave a rotation period of 8.07±0.02 and 9.5831±0.1453 hours, with a brightness variation of 0.98 and 1.30 in magnitude, respectively (U=2+/2).[6][7] Such a high amplitude in magnitude typically indicates that the body has an elongated shape.

Naming[edit]

This minor planet was named in honor of Belgian painter and internationally prominent 20th century artist, Pierre Alechinsky (born 1927), known for his treatment of colors, versatility and graphic humor, he was a member of the expressionist art group and avant-garde movement CoBrA, a name which was coined from the initials of the members' home cities: Copenhagen, Brussels, and Amsterdam.[2] The approved naming citation was published by the Minor Planet Center on 13 October 2000 (M.P.C. 41387).[9]

References[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 14832 Alechinsky (1987 QC3)" (2017-04-28 last obs.). Jet Propulsion Laboratory. Retrieved 25 June 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (14832) Alechinsky. Springer Berlin Heidelberg. p. 817. ISBN 978-3-540-00238-3. Retrieved 6 April 2016. 
  3. ^ a b c d e f "LCDB Data for (14832) Alechinsky". Asteroid Lightcurve Database (LCDB). Retrieved 6 April 2016. 
  4. ^ 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". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 8 May 2016. 
  5. ^ a b 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:1109.4096Freely accessible. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 3 December 2016. 
  6. ^ a b c Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (June 2014). "313 New Asteroid Rotation Periods from Palomar Transient Factory Observations". The Astrophysical Journal. 788 (1): 21. arXiv:1405.1144Freely accessible. Bibcode:2014ApJ...788...17C. doi:10.1088/0004-637X/788/1/17. Retrieved 6 April 2016. 
  7. ^ a b c 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:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 6 April 2016. 
  8. ^ a b "14832 Alechinsky (1987 QC3)". Minor Planet Center. Retrieved 6 April 2016. 
  9. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 8 May 2016. 

External links[edit]