1734 Zhongolovich

From Wikipedia, the free encyclopedia

Jump to: navigation, search
1734 Zhongolovich
Discovery [1]
Discovered by G. Neujmin
Discovery site Simeiz Obs.
Discovery date 11 October 1928
MPC designation 1734 Zhongolovich
Named after
Ivan Danilovich Zhongolovich
(Russian geodesist, ITA)[2]
1928 TJ · 1937 RO
1942 XQ · 1951 RM1
1965 UG
main-belt · (middle)[3]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 88.21 yr (32,220 days)
Aphelion 3.4194 AU
Perihelion 2.1343 AU
2.7768 AU
Eccentricity 0.2314
4.63 yr (1,690 days)
0° 12m 46.8s / day
Inclination 8.3467°
Physical characteristics
Dimensions 25.620±0.113 km[4]
28.47 (IRAS:16) km[3][6]
28.67±10.07 km[7]
33.04±0.71 km[8]
7.171±0.004 h[9]
0.0456 (IRAS:16)[3][6]
SMASS = Ch [1] · C[3][10]
11.68±0.38[10] · 11.7[1][3][5][8] · 11.74[7]

1734 Zhongolovich, provisional designation 1928 TJ, is a carbonaceous asteroid from the middle region of the asteroid belt, approximately 28 kilometers in diameter. It was discovered on 11 October 1928, by Russian astronomer Grigory Neujmin at Simeiz Observatory on the Crimean peninsula.[11]


In the SMASS classification this carbonaceous C-type asteroid is classified as a Ch-subtype, which show evidence of hydrated minerals. The asteroid orbits the Sun at a distance of 2.1–3.4 AU once every 4 years and 8 months (1,690 days). Its orbit has an eccentricity of 0.23 and an inclination of 8° with respect to the ecliptic.[1] The body's observation arc begins 9 years after its official discovery observation at Simeiz, with its first used identification, 1937 RO, made at Johannesburg Observatory in 1937.[11]

In August 2011, a rotational lightcurve of Zhongolovich was obtained from photometric observations by French amateur astronomer Pierre Antonini. Lightcurve analysis gave a well-defined rotation period of 7.171 hours with a brightness variation of 0.21 magnitude (U=3).[9]

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Zhongolovich measures between 25.62 and 33.04 kilometers in diameter and its surface has an albedo between and 0.031 and 0.051.[4][5][6][7][8] The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS, that is, an albedo of 0.0456 and a diameter of 28.47 kilometers.[3]

This minor planet is named in honor of Russian astronomer and geodesist Ivan Zhongolovich, who was the the head of the Special Ephemeris Department at the Institute of Theoretical Astronomy (ITA) in St Petersburg.[2] Naming citation was published before November 1977 (M.P.C. 3933).[12]


  1. ^ a b c d e "JPL Small-Body Database Browser: 1734 Zhongolovich (1928 TJ)" (2017-01-10 last obs.). Jet Propulsion Laboratory. Retrieved 13 March 2017. 
  2. ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1734) Zhongolovich. Springer Berlin Heidelberg. p. 138. ISBN 978-3-540-00238-3. Retrieved 13 March 2017. 
  3. ^ a b c d e f "LCDB Data for (1734) Zhongolovich". Asteroid Lightcurve Database (LCDB). Retrieved 13 March 2017. 
  4. ^ a b c 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 13 March 2017. 
  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" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 13 March 2017. 
  6. ^ a b c Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 13 March 2017. 
  7. ^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923Freely accessible. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63. Retrieved 13 March 2017. 
  8. ^ 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" (PDF). Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 13 March 2017. 
  9. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1734) Zhongolovich". Geneva Observatory. Retrieved 13 March 2017. 
  10. ^ a b 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 13 March 2017. 
  11. ^ a b "1734 Zhongolovich (1928 TJ)". Minor Planet Center. Retrieved 13 March 2017. 
  12. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 13 March 2017. 

External links[edit]