4265 Kani

4265 Kani
Discovery [1]
Discovered by Y. Mizuno, T. Furuta
Discovery site Kani Observatory (403)
Discovery date 8 October 1989
Designations
MPC designation 4265 Kani
Named after
 Kani (Japanese city)[2]
1989 TX · 1940 WM
1955 VJ · 1974 VH2
1983 AP1 · A917 TB
main-belt · (inner) [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 74.90 yr (27,358 days)    
Aphelion 2.9156 AU
Perihelion 1.9401 AU
2.4278 AU
Eccentricity 0.2009
3.78 yr (1,382 days)
344.21°
Inclination 4.3569°
127.25°
242.77°
Physical characteristics
Dimensions 15.74±0.76 km[4]
14.244±0.160 km[5]
7.46 km (calculated)[3]
5.7279±0.0001 h[lower-alpha 1][6]
5.7285±0.0011 h[7]
5.72755±0.00005 h[8]
0.054±0.006[4]
0.0565±0.0074[5]
0.20 (assumed)[3]

SMASS = C

C [3]
13.0[1][3]
12.8[4][5]
12.94[7]

    4265 Kani, provisional designation 1989 TX, is a carbonaceous asteroid from the inner regions of the asteroid belt, about 14 kilometers in diameter. It was discovered by Japanese astronomers Yoshikane Mizuno and Toshimasa Furuta at Kani Observatory (403) on 8 October 1989.[9] The C-type asteroid orbits the Sun at a distance of 1.9–2.9 AU once every 3 years and 9 months (1,382 days). Its orbit shows an eccentricity of 0.20 and an inclination of 4 degrees from the plane of the ecliptic.[1]

    Photometric observations of this asteroid carried out from Golden Hill Observatory in Stourton Caundle and Palmer Divide Observatory in Colorado Springs, Colorado produced a light-curve with a rotation period for the asteroid of 5.7279±0.0001 hours and a brightness variation of 0.75 ± 0.02 in magnitude (U=3-).[6][lower-alpha 1] Observations at the Palomar Transient Factory and revised shape-models have since confirmed the body's rotation period.[7][8]

    According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 15.7 and 14.2 kilometers in diameter, respectively.[4][5] Conversely, the Collaborative Asteroid Lightcurve Link calculates a diameter of only 7.5 kilometers, due to an assumed albedo of 0.20, which is untypically high for carbonaceous asteroids.[3]

    The minor planet was named for the Japanese city of Kani, a quiet, rural city and home of the discoverer. It is situated about 30 kilometers north of Nagoya, the third largest city in Japan. Kani is located on the banks of the beautiful river Kiso, which is said to resemble the Rhine in Germany.[2]

    References

    1. 1 2 Pravec (2008) web: rotation period 5.7279±0.0001 hours with a brightness amplitude of 0.75 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (4265) Kani
    1. 1 2 3 4 "JPL Small-Body Database Browser: 4265 Kani (1989 TX)" (2015-10-25 last obs.). Jet Propulsion Laboratory. Retrieved February 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (4265) Kani. Springer Berlin Heidelberg. p. 365. ISBN 978-3-540-00238-3. Retrieved February 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (4265) Kani". Asteroid Lightcurve Database (LCDB). Retrieved February 2016.
    4. 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 February 2016.
    5. 1 2 3 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. Retrieved February 2016.
    6. 1 2 Miles, Richard; Warner, Brian D. (April 2009). "The Rotation Period of 4265 Kani and an Example of the Meridian Flip Problem". The Minor Planet Bulletin 36 (2): 66–68. Bibcode:2009MPBu...36...66M. ISSN 1052-8091. Retrieved February 2016.
    7. 1 2 3 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. arXiv:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved February 2016.
    8. 1 2 Hanus, J.; Durech, J.; Oszkiewicz, D. A.; Behrend, R.; Carry, B.; Delbo', M.; et al. (October 2015). "New and updated convex shape models of asteroids based on optical data from a large collaboration network". arXiv:1510.07422.
    9. ↑ "4265 Kani (1989 TX)". Minor Planet Center. Retrieved February 2016.

    External links


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