3872 Akirafujii

3872 Akirafujii
Discovery [1]
Discovered by B. A. Skiff
Discovery site Anderson Mesa Stn.
Discovery date 12 January 1983
Designations
MPC designation 3872 Akirafujii
Named after
 Akira Fujii (astrophotographer)[2]
1983 AV · 1931 AY
main-belt · Eunomia [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 84.92 yr (31,017 days)      
Aphelion 3.2036 AU
Perihelion 2.1203 AU
2.6619 AU
Eccentricity 0.2035
4.34 yr (1,586 days)
233.3234°
0° 13m 36.84s / day
Inclination 13.0398°
94.7683°
66.0429°
Physical characteristics
Dimensions 15.16±1.3 km (IRAS:13)[4]
21.43±1.51 km[5]
12.538±0.340 km[6]
15.20 km (derived)[3]
10.635 h[7]
22.289±0.003 h[8]
0.0583±0.011 (IRAS:13)[4]
0.029±0.005[5]
0.0852±0.0120[6]
0.0697 (derived)[3]
C [9] · S [3]
12.6[1][3]
12.8[4][5][6]
12.44±0.26[9]

    3872 Akirafujii, provisional designation 1983 AV, is a carbonaceous Eunomia asteroid from the middle region of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 12 January 1983, by American astronomer Brian Skiff at Lowell's Anderson Mesa Station, near Flagstaff, Arizona.[10]

    The dark C-type asteroid is a member of the Eunomia family, a large group of otherwise predominantly stony asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun at a distance of 2.1–3.2 AU once every 4 years and 4 months (1,586 days). Its orbit has an eccentricity of 0.20 and an inclination of 13° with respect to the ecliptic.[1] The first precovery was taken at Lowell Observatory in 1931, extending the asteroid's observation arc by 52 years prior to its discovery.[10]

    Two rotational light-curves were obtained through photometric observations at the Chiro Observatory, Australia, and at the U.S. Preston Gott Observatory, Texas, in August 2005 and November 2012, respectively. The ambiguous light-curve from Chiro Observatory showed a rotation period of 10.635 hours with a brightness variation of 0.35 in magnitude, when using the longer solution (U=2).[7] The other light-curve at Preston Gott gave a period of 22.289±0.003 hours with an amplitude of 0.23 (U=2-).[8]

    According to the space-based surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures between 12.5 and 21.4 kilometers, and its surface has a low albedo in the range of 0.03 to 0.09.[4][5][6] The Collaborative Asteroid Lightcurve Link (CALL) derives an albedo of 0.07 and calculates a diameter of 15.2 kilometers, based on an absolute magnitude of 12.6.[3] Contrary to the large-scale survey performed by Pan-STARRS, CALL classifies the body as a S-type rather than a carbonaceous C-type asteroid.[3][9]

    The minor planet was named in honour of Japanese astronomer Akira Fujii (b. 1941), a prominent astronomy communicator and astrophotographer at his Chiro Observatory in Shirakawa, Fukushima prefecture. Editor of the "Star Handbook" (Hoshi No Techou) and author of a well known astronomy book series for young people, Fujii has also publicized astronomy on TV, and he has toured the country during the 1986 apparition of Halley's Comet, encouraging the public to observe it with a 0.6-meter reflector telescope mounted on his trailer. Internationally, Fujii is most famous for his excellent celestial images.[2] Naming citation was published on 29 November 1993 (M.P.C. 22829).[11]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 3872 Akirafujii (1983 AV)" (2015-12-14 last obs.). Jet Propulsion Laboratory. Retrieved 4 May 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (3872) Akirafujii. Springer Berlin Heidelberg. pp. 328–329. ISBN 978-3-540-00238-3. Retrieved 4 May 2016.
    3. 1 2 3 4 5 6 7 "LCDB Data for (3872) Akirafujii". Asteroid Lightcurve Database (LCDB). Retrieved 4 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 4 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 4 May 2016.
    6. 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 4 May 2016.
    7. 1 2 Clark, Maurice (March 2007). "Lightcurve Results for 1318 Nerina, 222 Lermontov 3015 Candy, 3089 Oujianquan, 3155 Lee, 6410 Fujiwara, 6500 Kodaira, (8290) 1992 NP, 9566 Rykhlova, (42923) 1999 SR18, and 2001 FY". The Minor Planet Bulletin. 34 (1): 19–22. Bibcode:2007MPBu...34...19C. ISSN 1052-8091. Retrieved 4 May 2016.
    8. 1 2 Clark, Maurice (July 2013). "Asteroid Photometry from the Preston Gott Observatory". The Minor Planet Bulletin. 40 (3): 131–133. Bibcode:2013MPBu...40..131C. ISSN 1052-8091. Retrieved 4 May 2016.
    9. 1 2 3 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 4 May 2016.
    10. 1 2 "3872 Akirafujii (1983 AV)". Minor Planet Center. Retrieved 4 May 2016.
    11. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 4 May 2016.

    External links

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