349 Dembowska

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349 Dembowska is a large asteroid of the main belt, discovered on 9 December 1892, by the French astronomer Auguste Charlois while working at the observatory in Nice, France.[1] It is named in honor of the Baron Hercules Dembowski, an Italian astronomer who made significant contributions to research on double and multiple stars.

Orbiting just inside the prominent 7:3 resonance with Jupiter, 349 Dembowska is among the largest asteroids in the main belt with an estimated diameter of ~140 km.[2] It has a rotational period of 4.7012 hours,[2] and is classified as an R-type asteroid for the presence of strong absorption lines in olivine and pyroxene with little or no metals. It may have undergone partial melting/differentiation.[3] 349 Dembowska has an unusually high albedo of 0.384. Of the asteroids with a diameter greater than 75 km, only 4 Vesta has a higher known albedo.[4]

Dembowska and 16 Psyche have orbits that repeat themselves almost exactly every five years in respect to their position to the Sun and Earth.Script error: No such module "Unsubst".

In 1988 a search for satellites or dust orbiting this asteroid was performed using the UH88 telescope at the Mauna Kea Observatories, but the effort came up empty.[5] There was one occultation on 31 October 2006,[6] and on 5 December 2007.[7]

References

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  1. Charlois, A.; Benennung von kleinen Planeten, Astronomische Nachrichten, Vol. 132, No. 3155, p. 175
  2. a b Majaess D. J., Tanner J., Savoy J., Sampson B. (2008). 349 Dembowska: A Minor Study of its Shape and Parameters, Minor Planet Bulletin, 35, 88
  3. Expanding the Spectral Compositional Information of Asteroid 349 Dembowska Template:Webarchive
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External links

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