2067 Aksnes

2067 Aksnes
Discovery [1]
Discovered by Y. Väisälä
Discovery site Turku Observatory
Discovery date 23 February 1936
Designations
MPC designation 2067 Aksnes
Named after
 Kaare Aksnes
(astronomer)[2]
1936 DD · 1951 AG
1965 UV · 1971 QH2
1973 UR2 · 1975 BD1
main-belt (outer) · Hilda [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 80.05 yr (29239 days)
Aphelion 4.6844 AU (700.78 Gm)
Perihelion 3.2442 AU (485.33 Gm)
3.9643 AU (593.05 Gm)
Eccentricity 0.18165
7.89 yr (2883.0 d)
116.14°
0° 7m 29.532s / day
Inclination 3.0797°
150.25°
297.48°
Earth MOID 2.2617 AU (338.35 Gm)
Jupiter MOID 0.588881 AU (88.0953 Gm)
Jupiter Tisserand parameter 3.027
Physical characteristics
Dimensions 42.59±2 km (IRAS:4)[4]
49.26±1.96 km[5]
42.53 km (derived)[3]
Mean radius
 21.295 ± 1 km
17.75 h (0.740 d)[1][6]
0.0626 ± 0.006 (IRAS:4)[1][4]
0.049±0.004[5]
0.05±0.01[7]
0.0562 (derived)[3]
B–V = 0.658
U–B = 0.240
Tholen = P
P [3]
10.48[1]

    2067 Aksnes, provisional designation 1936 DD, is a rare-type hildian asteroid from the outermost region of the asteroid belt, about 43 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland on 23 February 1936.[8]

    The dark and reddish asteroid is classified as a rare P-type asteroid on the Tholen taxonomic scheme, of which only a few dozens bodies are currently known.[9] It orbits the Sun at a distance of 3.2–4.7 AU once every 7 years and 11 months (2,884 days). Its orbit is tilted by 3 degrees to the plane of the ecliptic and shows an eccentricity of 0.18. The asteroid has a rotation period of 17.75 hours[6] and a low albedo between 0.05 and 0.06, according to the surveys carried out by the Infrared Astronomical Satellite, IRAS, the Japanese Akari satellite, and the U.S. Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission.[4][5][7]

    Located in the outermost part of the main-belt, the asteroid is a member of the Hilda family, a large group of asteroids that are thought to have originated from the Kuiper belt. They orbit in a 3:2 orbital resonance with the gas giant Jupiter, meaning that for every 2 orbits Jupiter completes around the Sun, a Hildian asteroid will complete 3 orbits.[1] The asteroid's orbit does not cross the path of any of the planets and therefore it will not be pulled out of orbit by Jupiter's gravitational field. As a result of this, it is likely that the asteroid will remain in a stable orbit for thousands of years.

    The minor planet was named in honor of Norwegian Kaare Aksnes (b. 1938), a celestial mechanician who worked at the Smithsonian Astrophysical Observatory during 1971–1978. He is known for his work on both, artificial and natural satellites, especially for his detailed analyses of observations of the mutual phenomena of the Galilean satellites.[2]

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 2067 Aksnes (1936 DD)" (2015-07-13 last obs.). Jet Propulsion Laboratory. Retrieved 17 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (2067) Aksnes. Springer Berlin Heidelberg. p. 167. ISBN 978-3-540-29925-7. Retrieved December 2015.
    3. 1 2 3 4 "LCDB Data for (2067) Aksnes". Asteroid Lightcurve Database (LCDB). Retrieved December 2015.
    4. 1 2 3 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 December 2015.
    5. 1 2 3 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 December 2015.
    6. 1 2 Dahlgren, M.; Lahulla, J. F.; Lagerkvist, C.-I.; Lagerros, J.; Mottola, S.; Erikson, A.; Gonano-Beurer, M.; Di Martino, M. (June 1998). "A Study of Hilda Asteroids. V. Lightcurves of 47 Hilda Asteroids". Icarus 133 (2): 247–285. Bibcode:1998Icar..133..247D. doi:10.1006/icar.1998.5919. Retrieved December 2015.
    7. 1 2 Grav, T.; Mainzer, A. K.; Bauer, J.; Masiero, J.; Spahr, T.; McMillan, R. S.; Walker, R.; Cutri, R.; Wright, E.; Eisenhardt, P. R.; Blauvelt, E.; DeBaun, E.; Elsbury, D.; Gautier, T.; Gomillion, S.; Hand, E.; Wilkins, A. (January 2012). "WISE/NEOWISE Observations of the Hilda Population: Preliminary Results". The Astrophysical Journal 744 (2): 15. arXiv:1110.0283. Bibcode:2012ApJ...744..197G. doi:10.1088/0004-637X/744/2/197. Retrieved December 2015.
    8. ↑ "2067 Aksnes (1936 DD)". Minor Planet Center. Retrieved December 2015.
    9. ↑ "JPL Small-Body Database Search Engine: spec. type = P (Tholen)". JPL Solar System Dynamics. Retrieved 2015-06-17.

    External links


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