2246 Bowell

2246 Bowell
Discovery [1]
Discovered by E. Bowell
Discovery site Anderson Mesa Stn.
Discovery date 14 December 1979
Designations
MPC designation 2246 Bowell
Named after
 Edward Bowell
(astronomer)[2]
1979 XH · 1942 GP
1973 FH2 · 1973 FR
1976 SL6 · 1977 SM3
main-belt (outer)[1]
Hilda [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 61.33 yr (22,402 days)     
Aphelion 4.3298 AU
Perihelion 3.5867 AU
3.9583 AU
Eccentricity 0.0939
7.88 yr (2,876 days)
194.53°
0° 7m 30.72s / day
Inclination 6.4947°
155.67°
21.342°
Jupiter MOID 0.6435 AU
Physical characteristics
Dimensions 40.73±1.70 km[4]
44.21±3.2 km (IRAS:6)[5]
4.992 h[6]
0.0540±0.009 (IRAS:6)[5]
0.066±0.006[4]
B–V = 0.746[1]
U–B = 0.239[1]
D (Tholen) and (SMASS)[1]
D [3]
10.56[1][3][4][5]
10.65±0.20[7]

    2246 Bowell, provisional designation 1979 XH, is a rare-type Hildian asteroid from the outermost region of the asteroid belt, approximately 44 kilometers in diameter. It was discovered by American astronomer Edward Bowell at Lowell Observatory's Anderson Mesa Station on 14 December 1979.[8]

    The asteroid is a member of the Hilda family, the outermost orbital group of asteroids in the main-belt, that are in a 3:2 orbital resonance with Jupiter. It has a reddish D-type spectrum on both the SMASS and Tholen taxonomic scheme, and is one of only 46 known bodies with such a spectral type.[9]

    The asteroid orbits the Sun at a distance of 3.6–4.3 AU once every 7 years and 11 months (2,876 days). Its orbit has an eccentricity of 0.09 and an inclination of 6° with respect to the ecliptic.[1] The first used precovery was taken at Palomar Observatory in 1955, extending the asteroid's observation arc by 24 years prior to its discovery.[8]

    A rotational light-curve for this body was obtained during a photometric survey of Hildian asteroids at the Uppsala Astronomical Observatory and others places in the late 1990s. The light-curve gave a well-defined rotation period of 4.992 hours with a brightness variation of 0.46 in magnitude (U=3).[6]

    According to six observations by the Infrared Astronomical Satellite IRAS, the asteroid measures 44.2 kilometers in diameter and its surface has an albedo of 0.054, while the Japanese Akari satellite finds an albedo of 0.066 and a mean diameter of 40.7 kilometers.[4][5] The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS.[3]

    The minor planet was named in honor of its discoverer, Edward L. G. Bowell (b. 1943), based on a proposal by MPC's longtime director Brian G. Marsden. Astronomer at the Lowell Observatory and a prolific discoverer of minor planets himself, Bowell has made significant contributions on the observatory's UBV photometry and astrometry programs for minor planets, including the prediction of occultation events.[2] Naming citation was published on 1 January 1981 (M.P.C. 5688).[10]

    References

    1. 1 2 3 4 5 6 7 8 "JPL Small-Body Database Browser: 2246 Bowell (1979 XH)" (2016-05-16 last obs.). Jet Propulsion Laboratory. Retrieved 9 August 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2246) Bowell. Springer Berlin Heidelberg. p. 183. ISBN 978-3-540-00238-3. Retrieved 9 August 2016.
    3. 1 2 3 4 "LCDB Data for (2246) Bowell". Asteroid Lightcurve Database (LCDB). Retrieved 9 August 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 9 August 2016.
    5. 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 9 August 2016.
    6. 1 2 Dahlgren, M.; Lahulla, J. F.; Lagerkvist, C.-I.; Lagerros, J.; Mottola, S.; Erikson, A.; et al. (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 9 August 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 9 August 2016.
    8. 1 2 "2246 Bowell (1979 XH)". Minor Planet Center. Retrieved 9 August 2016.
    9. ↑ "JPL Small-Body Database Search Engine: [ spec. type = D (Tholen) or spec. type = D (SMASSII) ]". JPL Solar System Dynamics. Retrieved 9 August 2016.
    10. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 9 August 2016.

    External links

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