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2420 Čiurlionis, provisionally designated 1975 TN, is a stony Eunomian asteroid from the central regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 3 October 1975, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula, and later named after Lithuanian painter and composer Mikalojus Čiurlionis.

Orbit and classification

Čiurlionis is a member of the Eunomia family, a large group of S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun at a distance of 2.2–2.9 AU once every 4 years and 1 month (1,496 days). Its orbit has an eccentricity of 0.13 and an inclination of 15° with respect to the ecliptic.

Physical characteristics

Lightcurves

Two rotational lightcurves of Čiurlionis were obtained from photometric observations. Lightcurve analysis gave a rotation period of 12.84 and 15.760 hours with a brightness amplitude of 0.48 and 0.51 magnitude, respectively (U=2/3-).

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Čiurlionis measures 8.444 kilometers in diameter and its surface has an albedo of 0.327. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 – derived from 15 Eunomia, the family's largest member and namesake – and calculates a diameter of 10.06 kilometers based on an absolute magnitude of 12.3.

Naming

This minor planet was named after Lithuanian Art Nouveau painter and composer Mikalojus Konstantinas Čiurlionis (1875–1911). The approved naming citation was published by the Minor Planet Center on 17 February 1984 (M.P.C. 8542).

References

1. ^ "JPL Small-Body Database Browser: 2420 Ciurlionis (1975 TN)" (2017-03-05 last obs.). Jet Propulsion Laboratory. Retrieved 29 June 2017.
2. ^ Schmadel, Lutz D. (2007). "(2420) Čiurlionis". Dictionary of Minor Planet Names – (2420) Čiurlionis. Springer Berlin Heidelberg. p. 197. doi:10.1007/978-3-540-29925-7_2421. ISBN 978-3-540-00238-3.
3. ^ "LCDB Data for (2420) Čiurlionis". Asteroid Lightcurve Database (LCDB). Retrieved 29 June 2017.
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.
5. ^ 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:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 29 June 2017.
6. ^ Durkee, Russell I.; Syring, Connor W. (April 2013). "Lightcurve of 2420 Ciurlionis". The Minor Planet Bulletin. 40 (2): 88. Bibcode:2013MPBu...40...88D. ISSN 1052-8091. Retrieved 29 June 2017.
7. ^ Foylan, Mike; Durkee, Russell I. (April 2017). "A Revised Rotation Period for Minor Planet 2420 Ciurlionis". The Minor Planet Bulletin. 44 (2): 91–92. Bibcode:2017MPBu...44...91F. ISSN 1052-8091. Retrieved 29 June 2017.
8. 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 29 June 2017.
9. "2420 Ciurlionis (1975 TN)". Minor Planet Center. Retrieved 29 June 2017.
10. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 29 June 2017.

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived 2017-12-16 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 2420 Čiurlionis at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

• Minor planet object articles (numbered)
• Eunomia asteroids
• Discoveries by Nikolai Chernykh
• Named minor planets
• Astronomical objects discovered in 1975