1076 Viola

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1076 Viola Template:IPAc-en,[1] provisional designation Template:Mp, is a Nysian asteroid from the inner regions of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 5 October 1926, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany.[2] The asteroid was named after the flowering plant Viola.[3]

Orbit and classification

Viola is a non-family asteroid of the main belt's background population when applying the Hierarchical Clustering Method to its proper orbital elements.[4] The asteroid has also been classified as a member of the Nysa family (405Script error: No such module "Check for unknown parameters".),[5] the largest asteroid family of the main belt, consisting of stony and carbonaceous subfamilies. The family, named after 44 Nysa, is located near the Kirkwood gap (3:1 orbital resonance with Jupiter), a depleted zone that separates the central main belt.

Viola orbits the Sun in the inner asteroid belt at a distance of 2.1–2.8 AU once every 3 years and 11 months (1,422 days; semi-major axis of 2.47 AU). Its orbit has an eccentricity of 0.14 and an inclination of 3° with respect to the ecliptic.[6] The body's observation arc begins at Heidelberg in January 1951, or more than 24 years after its official discovery observation.[2]

Physical characteristics

In the Tholen classification, Viola is a rare F-type asteroid, while in the SMASS taxonomy, it is classified as a common, carbonaceous C-type.[6][5]

Rotation period

In the 1980s, a rotational lightcurve of Viola was obtained from photometric observations by American astronomer Richard Binzel. Lightcurve analysis gave a well-defined rotation period of 7.336 hours with a brightness amplitude of 0.12 magnitude (U=3Script error: No such module "Check for unknown parameters".).[7] A tentative period of 14.4 hours was measured by French amateur astronomer René Roy in January 2009, but later retracted from the LCDB (U=n.a.Script error: No such module "Check for unknown parameters".).[5][8]

Diameter and albedo

According to the 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, Viola measures between 21.412 and 26.39 kilometers in diameter and its surface has an albedo between 0.032 and 0.0428.[9][10][11][12][13][14][15][16][17]

The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0415 and a diameter of 22.63 kilometers based on an absolute magnitude of 12.30.[5][14]

Naming

This minor planet was named after Viola, a genus of flowering plants within the violet family. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 102Script error: No such module "Check for unknown parameters".).[3]

Reinmuth's flowers

Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between Template:MoMP and Template:MoMP. This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).[18]

References

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  1. ↑ Template:IPAc-en is the pronunciation of the musical instrument, rather than the flower that this asteroid is named after.
  2. ↑ a b Script error: No such module "citation/CS1".
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  6. ↑ a b Script error: No such module "citation/CS1".
  7. ↑ Script error: No such module "Citation/CS1".
  8. ↑ Script error: No such module "citation/CS1".
  9. ↑ Script error: No such module "Citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1".
  11. ↑ Script error: No such module "Citation/CS1".
  12. ↑ Script error: No such module "Citation/CS1".
  13. ↑ Script error: No such module "Citation/CS1".
  14. ↑ a b Script error: No such module "Citation/CS1".
  15. ↑ Script error: No such module "Citation/CS1".
  16. ↑ Script error: No such module "Citation/CS1".
  17. ↑ Script error: No such module "Citation/CS1". (online, AcuA catalog p. 153)
  18. ↑ Script error: No such module "citation/CS1".

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External links

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