6025 Naotosato

6025 Naotosato
Discovery [1]
Discovered by T. Urata
Discovery site Nihondaira Obs.
Discovery date 30 December 1992
Designations
MPC designation 6025 Naotosato
Named after
 Naoto Satō
(astronomer)[2]
1992 YA3 · 1954 SG1
1965 UO · 1977 BK
1983 EE1 · 1986 TL11
1987 YS2 · 1990 HF2
1991 RS29
main-belt · Eos [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 60.76 yr (22,191 days)
Aphelion 3.2329 AU
Perihelion 2.8100 AU
3.0215 AU
Eccentricity 0.0700
5.25 yr (1,918 days)
201.45°
0° 11m 15.72s / day
Inclination 9.0003°
280.24°
160.25°
Physical characteristics
Dimensions 17.80 km (calculated)[3]
19.90±0.91 km[4]
19.968±0.172 km[5]
10 h[6]
0.14 (assumed)[3]
0.1475±0.0099[5]
0.162±0.016[4]
S [3]
11.2[4][5]
11.5[1][3]
11.70±0.28[7]

    6025 Naotosato, provisional designation 1992 YA3, is an Eoan asteroid from the outer region of the asteroid belt, approximately 19 kilometers in diameter. It was discovered on 30 December 1992, by Japanese astronomer Takeshi Urata at the Nihondaira Observatory in Oohira, Japan.[8]

    The S-type asteroid is a member of the Eos family, an orbital group of more than 4,000 asteroids, which are well known for mostly being of stony composition. It orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,918 days). Its orbit has an eccentricity of 0.07 and an inclination of 9° with respect to the ecliptic.[1] The first observation was made at Goethe Link Observatory in 1954, extending the asteroid's observation arc by 38 years prior to its discovery.[8]

    In September 2009, a rotational light-curve for this asteroid was obtained from photometric observations by French astronomer René Roy. The fragmentary light-curve gave a longer-than average rotation period of 10 hours with a brightness amplitude of 0.20 in magnitude (U=1).[6]

    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 nearly 20 kilometers in diameter and its surface has an albedo of 0.148 and 0.162, respectively,[4][5] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.14 and calculates a diameter of 17.8 kilometers.[3]

    The minor planet was named after Japanese amateur astronomer Naoto Satō (b. 1953 ), by profession a junior high school science teacher and a prolific discoverer of minor planets from his private Chichibu Observatory himself. He has also prediscovered C/1989 Y2, a parabolic comet credited to McKenzie–Russell.[2] Naming citation was published on 2 February 1999 (M.P.C. 33786).[9]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 6025 Naotosato (1992 YA3)" (2015-06-30 last obs.). Jet Propulsion Laboratory. Retrieved 27 July 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (6025) Naotosato. Springer Berlin Heidelberg. p. 504. ISBN 978-3-540-00238-3. Retrieved 27 July 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (6025) Naotosato". Asteroid Lightcurve Database (LCDB). Retrieved 27 July 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 27 July 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" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 27 July 2016.
    6. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (6025) Naotosato". Geneva Observatory. Retrieved 27 July 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 27 July 2016.
    8. 1 2 "6025 Naotosato (1992 YA3)". Minor Planet Center. Retrieved 27 July 2016.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 July 2016.

    External links

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