2014 Vasilevskis

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2014 Vasilevskis
Discovery [1]
Discovered by A. R. Klemola
Discovery site Lick Obs.
Discovery date 2 May 1973
Designations
MPC designation (2014) Vasilevskis
Named after
Stanislavs Vasilevskis
(astronomer)[2]
1973 JA
main-belt · Phocaea[3]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 42.92 yr (15,676 days)
Aphelion 3.0903 AU
Perihelion 1.7125 AU
2.4014 AU
Eccentricity 0.2869
3.72 yr (1,359 days)
242.48°
0° 15m 53.64s / day
Inclination 21.375°
204.10°
82.882°
Physical characteristics
Dimensions 9.044±0.043[4]
9.071±0.051 km[5]
9.61 km (calculated)[3]
11.84±0.81 km[6]
15.6±0.1 h[7]
32.16±0.02 h[8]
36.25 h[9]
39±2 h[10]
0.23 (assumed)[3]
0.265±0.038[6]
0.309±0.041[4]
0.4513±0.1032[5]
S[3]
11.7[5][6] · 12.3[1][3] · 12.76±1.16[11]

2014 Vasilevskis, provisional designation 1973 JA, is a stony Phocaean asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 2 May 1973, by American astronomer Arnold Klemola at the U.S. Lick Observatory on Mount Hamilton, California.[12]

The stony S-type asteroid is a member of the Phocaea family, a group of asteroids with similar orbital characteristics, named after the family's namesake, 25 Phocaea. It orbits the Sun at a distance of 1.7–3.1 AU once every 3 years and 9 months (1,359 days). Its orbit has an eccentricity of 0.29 and an inclination of 21° with respect to the ecliptic.[1] No precoveries were taken prior to its discovery.[12]

In May 2014, a photometric light-curve analysis by Robert Stevens at the U.S. Center for Solar System Studies (CS3), California, rendered a rotation period of 32.16±0.02 hours with a brightness amplitude of 0.26 in magnitude (U=3-). Alternative measurements also made in 2014, include an observation by astronomer René Roy, which rendered a period of 39±2 hours with an amplitude of 0.31 in magnitude (U=2),[10] and an analysis at the U.S. Burleith Observatory in Washington DC, with a period of 15.6±0.1 hours, or 49% of the first period (U=2-).[7]

According to the space-based surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 11.8 and 9.1 kilometers with a surface albedo of 0.265 and 0.451, respectively.[6][5] The Collaborative Asteroid Lightcurve Link assumes an albedo 0.23 – derived from 25 Phocaea, the principal body of its orbital family – and calculates a diameter of 9.6 kilometers.[3]

The minor planet was named after astronomer Stanislavs Vasilevskis (d. 1988), long-time staff member at the discovering Lick Observatory from 1949 to 1974. A specialist for astrometric instrumentation, in particular the computational analysis of the position of astronomical objects from photographic plates, he has also performed broad astronomical surveys to obtain the parallax and proper motion of stars.[2] Naming citation was published before November 1977 (M.P.C. 4190).[13]

References[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 2014 Vasilevskis (1973 JA)" (2016-04-02 last obs.). Jet Propulsion Laboratory. Retrieved 8 December 2016. 
  2. ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2014) Vasilevskis. Springer Berlin Heidelberg. p. 163. ISBN 978-3-540-00238-3. Retrieved 29 March 2016. 
  3. ^ a b c d e f "LCDB Data for (2014) Vasilevskis". Asteroid Lightcurve Database (LCDB). Retrieved 17 May 2016. 
  4. ^ a b Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 8 December 2016. 
  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". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 17 May 2016. 
  6. ^ 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". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 17 May 2016. 
  7. ^ a b Schmidt, Richard E. (January 2015). "NIR Minor Planet Photometry from Burleith Observatory: 2014 February - June". The Minor Planet Bulletin. 42 (1): 1–3. Bibcode:2015MPBu...42....1S. ISSN 1052-8091. Retrieved 17 May 2016. 
  8. ^ Stephens, Robert D. (October 2014). "Asteroids Observed from CS3: 2014 April-June". The Minor Planet Bulletin. 41 (4): 226–230. Bibcode:2014MPBu...41..226S. ISSN 1052-8091. Retrieved 17 May 2016. 
  9. ^ Holliday, B. (December 1995). "Lightcurve Observations of Minor Planets 1508 Kemi and 2014 Vasilevskis". The Minor Planet Bulletin. 22.: 43. Bibcode:1995MPBu...22...43H. Retrieved 17 May 2016. 
  10. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (2014) Vasilevskis". Geneva Observatory. Retrieved 17 May 2016. 
  11. ^ 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 17 May 2016. 
  12. ^ a b "2014 Vasilevskis (1973 JA)". Minor Planet Center. Retrieved 29 March 2016. 
  13. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 May 2016. 

External links[edit]