2140 Kemerovo

2140 Kemerovo
Discovery [1]
Discovered by L. Chernykh
T. Smirnova
Discovery site CrAO – Nauchnyj
Discovery date 3 August 1970
Designations
MPC designation 2140 Kemerovo
Named after
 Kemerovo Oblast
(Russian federal subject)[2]
1970 PE · 1926 AJ
1940 WB · 1952 BH1
1957 BB · 1973 FY
1974 MP · 1975 NM1
1975 QJ · 1975 RM1
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 64.28 yr (23,478 days)    
Aphelion 3.1604 AU
Perihelion 2.8130 AU
2.9867 AU
Eccentricity 0.0582
5.16 yr (1,885 days)
258.04°
0° 11m 27.24s / day
Inclination 6.9861°
274.76°
120.00°
Physical characteristics
Dimensions 29.49±1.6 km (IRAS:4)[4]
32.11±0.52 km[5]
37.886±0.366 km[6]
29.33 km (derived)[3]
9.2±0.6 h (2001)[7]
9.2±0.6 h (2006)[7]
0.0887±0.011 (IRAS:4)[4]
0.076±0.003[5]
0.0537±0.0073[6]
0.0620 (derived)[3]
P [6] · X (Tholen) [3]
11.3[1][3]
10.9[4][5][6]

    2140 Kemerovo, provisional designation 1970 PE, is a dark asteroid from the outer region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered on 3 August 1970, by Russian female astronomers Lyudmila Chernykh and Tamara Smirnova at the Crimean Astrophysical Observatory on the Crimean peninsula.[8]

    The dark X-type asteroid is also classified as a rare and reddish P-type asteroid by NASA's space-based Wide-field Infrared Survey Explorer.[6] The body orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 2 months (1,885 days). Its orbit has an eccentricity of 0.06 and an inclination of 7° with respect to the ecliptic.[1] The first used precovery was taken at Palomar Observatory in 1951, extending the asteroid's observation arc by 19 years prior to its discovery. The first (unused) observation at Bergedorf Observatory dates back to 1926.[8]

    Two rotational light-curves were obtained from photometric observations made by French astronomers René Roy, Laurent Bernasconi and Olivier Thizy in August 2001 and July 2006. Both light-curve gave a rotation period of 9.2±0.6 hours with a brightness amplitude of 0.18 and 0.19 in magnitude, respectively (U=2/2).[7] According to the space-based surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite (mid-infrared), and the NEOWISE mission, the asteroid measures between 29.5 and 37.9 kilometers in diameter, and its surface has an albedo between 0.05 and 0.09.[4][5][6] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.062 and calculates a diameter of 29.3 kilometers.[3]

    The minor planet is named after Kemerovo Oblast, the regional center of the Russian Kemerovo district, and a significant industrial center in Siberia.[2] Naming citation was published on 8 February 1982 (M.P.C. 6647).[9]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 2140 Kemerovo (1970 PE)" (2016-04-07 last obs.). Jet Propulsion Laboratory. Retrieved 18 May 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2140) Kemerovo. Springer Berlin Heidelberg. p. 173. ISBN 978-3-540-00238-3. Retrieved 18 May 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (2140) Kemerovo". Asteroid Lightcurve Database (LCDB). Retrieved 18 May 2016.
    4. 1 2 3 4 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 18 May 2016.
    5. 1 2 3 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. Retrieved 18 May 2016.
    6. 1 2 3 4 5 6 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 18 May 2016.
    7. 1 2 3 Behrend, Raoul. "Asteroids and comets rotation curves – (2140) Kemerovo". Geneva Observatory. Retrieved 18 May 2016.
    8. 1 2 "2140 Kemerovo (1970 PE)". Minor Planet Center. Retrieved 18 May 2016.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 18 May 2016.

    External links


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