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 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 74.90 yr (27,358 days)      
Aphelion 2.9152 AU
Perihelion 1.9401 AU
2.4277 AU
Eccentricity 0.2008
3.78 yr (1,382 days)
36.346°
0° 15m 38.16s / day
Inclination 4.3570°
127.25°
242.75°
Physical characteristics
Dimensions 7.46 km (calculated)[3]
14.244±0.160 km[4]
15.74±0.76 km[5]
5.72755±0.00005 h[6]
5.727574±0.000001 h[7]
5.7279±0.0001 h[lower-alpha 1][8]
5.7285±0.0011 h[9]
0.054±0.006[5]
0.0565±0.0074[4]
0.20 (assumed)[3]
SMASS = C [1] · C [3]
12.8[4][5]
12.940±0.006 (R)[9]
13.0[1][3]

    4265 Kani, provisional designation 1989 TX, is a carbonaceous asteroid from the inner regions of the asteroid belt, approximately 14 kilometers in diameter. It was discovered by Japanese astronomers Yoshikane Mizuno and Toshimasa Furuta at Kani Observatory (403) on 8 October 1989.[10]

    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 has an eccentricity of 0.20 and an inclination of 4° with respect to the plane of the ecliptic.[1] The body's first observation at Crimea-Simeis dates back to 1917, while the first used observation was made at Turku in 1940, extending the asteroid's observation arc by 49 years prior to its discovery.[10]

    In October 2008, two rotational light-curves of this asteroid were obtained from photometric observations made at the Golden Hill Observatory in Stourton Caundle and the Palmer Divide Observatory in Colorado Springs, Colorado. The light-curves gave an identical rotation period of 5.7279±0.0001 hours and a brightness variation of 0.75 ± 0.02 in magnitude (U=3/3).[8][lower-alpha 1] Observations at the Palomar Transient Factory and revised shape-models have since confirmed the body's rotation period.[6][9]

    According to the space-based 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 a carbonaceous asteroid.[3]

    The minor planet was named for the Japanese city of Kani, home of the discoverer, located in the countryside of Japan's Gifu Prefecture, approximately 30 kilometers north of Nagoya, the country's third largest city. Kani is situated on the Kiso riverside, which is referred to as the Japan Rhine because of its similarities to the Rhine in Europe.[2] Naming citation was published on 11 March 1990 (M.P.C. 16045).[11]

    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 5 "JPL Small-Body Database Browser: 4265 Kani (1989 TX)" (2015-10-25 last obs.). Jet Propulsion Laboratory. Retrieved 7 June 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 7 June 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (4265) Kani". Asteroid Lightcurve Database (LCDB). Retrieved 7 June 2016.
    4. 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:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 7 June 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 7 June 2016.
    6. 1 2 Hanus, J.; Durech, J.; Oszkiewicz, D. A.; Behrend, R.; Carry, B.; Delbo, M.; et al. (February 2016). "New and updated convex shape models of asteroids based on optical data from a large collaboration network". Astronomy and Astrophysics. 586: 24. arXiv:1510.07422Freely accessible. Bibcode:2016A&A...586A.108H. doi:10.1051/0004-6361/201527441. Retrieved 7 June 2016.
    7. ↑ Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv:1601.02909Freely accessible. Bibcode:2016A&A...587A..48D. doi:10.1051/0004-6361/201527573. Retrieved 7 June 2016.
    8. 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 7 June 2016.
    9. 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:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 7 June 2016.
    10. 1 2 "4265 Kani (1989 TX)". Minor Planet Center. Retrieved 7 June 2016.
    11. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 7 June 2016.

    External links

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