astro.wikisort.org - Asteroid

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 on 14 December 1979, by American astronomer Edward Bowell at Lowell Observatory's Anderson Mesa Station, and named after the discoverer himself.[2][4]

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 (American astronomer)[2]
Alternative designations	1979 XH · 1942 GP 1973 FH2 · 1973 FR 1976 SL6 · 1977 SM3
Minor planet category	main-belt · Hilda[3][4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	62.06 yr (22,666 days)
Aphelion	4.3289 AU
Perihelion	3.5863 AU
Semi-major axis	3.9576 AU
Eccentricity	0.0938
Orbital period (sidereal)	7.87 yr (2,876 days)
Mean anomaly	244.37°
Mean motion	0° 7m 30.72s / day
Inclination	6.4941°
Longitude of ascending node	155.66°
Argument of perihelion	21.544°
Jupiter MOID	0.6437 AU
Physical characteristics
Dimensions	40.73±1.70 km[5] 44.21±3.2 km (IRAS:6)[6] 48.424±0.429[7]
Synodic rotation period	4.992 h[8]
Geometric albedo	0.045±0.012[7] 0.0540±0.009 (IRAS:6)[6] 0.066±0.006[5]
Spectral type	D (Tholen and SMASS)[1] D[3] B–V = 0.746[1] U–B = 0.239[1]
Absolute magnitude (H)	10.56[1][3][5][6] · 10.65±0.20[9]

Orbit and classification

Bowell 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.[4]

It orbits the Sun at a distance of 3.6–4.3 AU once every 7 years and 10 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.[4]

Physical characteristics

Bowell 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.[10]

Rotation period

A rotational lightcurve of Bowell was obtained during a photometric survey of Hildian asteroids at the Uppsala Astronomical Observatory and others places in the late 1990s. The lightcurve gave a well-defined rotation period of 4.992 hours with a brightness variation of 0.46 in magnitude (U=3).[8]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite, the Infrared Astronomical Satellite IRAS (six observations), and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Bowell measures 40.7, 44.2 and 48.4 kilometers in diameter and its surface has an albedo of 0.066, 0.054 and 0.045, respectively.[5][6][7] The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS.[3]

Naming

This minor planet was named in honor of its discoverer, the American astronomer Edward L. G. Bowell (born 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] The official naming citation was published by the Minor Planet Center on 1 January 1981 (M.P.C. 5688).[11]

References

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived 2017-12-16 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• 2246 Bowell at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 2246 Bowell at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (2246) Bowell

(2246) Bowell ist ein Asteroid des äußeren Hauptgürtels, der von dem US-amerikanischen Astronomen Edward L. G. Bowell am 14. Dezember 1979 an der Anderson Mesa Station (IAU-Code 095) des Lowell-Observatoriums im Coconino County, Arizona entdeckt wurde.

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- [en] 2246 Bowell

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[es] (2246) Bowell

(2246) Bowell es un asteroide que forma parte del cinturón exterior de asteroides y fue descubierto el 14 de diciembre de 1979 por Edward L. G. Bowell desde la Estación Anderson Mesa, en Flagstaff, Estados Unidos.

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