1956 Artek

1956 Artek, provisional designation 1969 TX1, is a dark Themistian asteroid from the outer regions of the asteroid belt, approximately 19 kilometers in diameter. It was discovered on 8 October 1969, by Soviet–Russian astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnyj.[8] It was named after Artek, a Soviet Young Pioneer camp.[2]

1956 Artek
Discovery[1]
Discovered byL. Chernykh
Discovery siteCrimean Astrophysical Obs.
Discovery date8 October 1969
Designations
(1956) Artek
Named after
Artek (Арте́к)
(Young Pioneer camp)[2]
1969 TX1 · 1975 TA6
main-belt · Themis[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc63.16 yr (23,069 days)
Aphelion3.5304 AU
Perihelion2.8760 AU
3.2032 AU
Eccentricity0.1022
5.73 yr (2,094 days)
11.877°
0° 10m 18.84s / day
Inclination1.4928°
153.36°
346.60°
Physical characteristics
Dimensions17.97±0.91 km[4]
18.71 km (calculated)[3]
19.92±3.55 km[5]
9.4±0.2 h[1][6]
0.074±0.033[5]
0.08 (assumed)[3]
0.099±0.011[4]
C[3]
11.90[4] · 11.95[5] · 12.08±0.41[7] · 12.1[1][3]

    Orbit and classification

    Artek is a dark C-type asteroid and a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun in the outer main-belt at a distance of 2.9–3.5 AU once every 5 years and 9 months (2,094 days). Its orbit has an eccentricity of 0.10 and an inclination of 1° with respect to the ecliptic.[1] The first precovery was taken at Goethe Link Observatory in 1954, extending the asteroid's observation arc by 15 years prior to its discovery.[8]

    Physical characteristics

    A rotational lightcurve was obtained from photometric observations made by Italian astronomers Roberto Crippa and Federico Manzini in February 2006. The fragmentary lightcurve gave a rotation period of 9.4±0.2 hours with a low brightness variation of 0.07 magnitude (U=1+).[6]

    According to the space-based surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer, the asteroid measures 18.0 and 19.2 kilometers in diameter with a corresponding albedo of 0.099 of 0.074, respectively.[4][5] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 18.7 kilometers with an absolute magnitude of 12.1.[3]

    Naming

    This minor planet was named after the Soviet Artek (Арте́к) camp, the first All-Union Young Pioneer camp on the Crimean peninsula.[2] The official naming citation was published by the Minor Planet Center on 30 June 1977 (M.P.C. 4190).[9]

    References
    1. "JPL Small-Body Database Browser: 1956 Artek (1969 TX1)" (2017-05-04 last obs.). Jet Propulsion Laboratory. Retrieved 2 July 2017.
    2. Schmadel, Lutz D. (2007). "(1956) Artek". Dictionary of Minor Planet Names – (1956) Artek. Springer Berlin Heidelberg. p. 157. doi:10.1007/978-3-540-29925-7_1957. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1956) Artek". Asteroid Lightcurve Database (LCDB). Retrieved 18 May 2016.
    4. 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. (online, AcuA catalog p. 153)
    5. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8.
    6. Behrend, Raoul. "Asteroids and comets rotation curves – (1956) Artek". Geneva Observatory. Retrieved 18 May 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.
    8. "1956 Artek (1969 TX1)". Minor Planet Center. Retrieved 18 May 2016.
    9. Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.

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