866 Fatme

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866 Fatme (prov. designation: Template:Mp or Template:Mp) is a large background asteroid, approximately Script error: No such module "convert". in diameter, located in the outer region of the asteroid belt. It was discovered by German astronomer Max Wolf at the Heidelberg-Königstuhl State Observatory on 25 February 1917.[1] The X-type asteroid has a short rotation period of 5.8 hours. It was named after "Fatme", a character in the opera Abu Hassan by Carl Maria von Weber (1786–1826).[2]

Orbit and classification

Fatme is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[3][4] It orbits the Sun in the outer asteroid belt at a distance of 3.0–3.3 AU once every 5 years and 6 months (2,017 days; semi-major axis of 3.12 AU). Its orbit has an eccentricity of 0.05 and an inclination of 9° with respect to the ecliptic.[5] The body's observation arc begins at Heidelberg Observatory on 16 March 1917, or three weeks after its official discovery observation.[1]

Naming

This minor planet was named after Fatme, a character in the opera Abu Hassan by German composer Carl Maria von Weber (1786–1826). The official Template:MoMP was also mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 85Script error: No such module "Check for unknown parameters".).[2] Another asteroid 865 Zubaida, was also named after a character of this opera. The composer himself was honored with the naming of 4152 Weber.

Physical characteristics

In the Bus–Binzel SMASS classification, Fatme is an X-type asteroid.[5]

Rotation period

In June 2018, a rotational lightcurve of Fatme was obtained from 5 nights of photometric observations by Tom Polakis at the Command Module Observatory Template:Obscode in Arizona. Lightcurve analysis gave a rotation period of Script error: No such module "val". hours with a brightness variation of Script error: No such module "val". magnitude (U=2Script error: No such module "Check for unknown parameters".).[6] The result supersedes previously reported period determinations of Script error: No such module "val". hours with an amplitude of Script error: No such module "val". magnitude by Robert Stephens at the Santana Observatory Template:Obscode, California, in May 2001 (U=2Script error: No such module "Check for unknown parameters".),[7] Script error: No such module "val". hours with an amplitude of Script error: No such module "val". magnitude (tentative) by French amateur astronomer Laurent Bernasconi in December 2004 (U=1Script error: No such module "Check for unknown parameters".),[8] Script error: No such module "val". hours with an amplitude of Script error: No such module "val". magnitude (tentative) by French amateur astronomer René Roy in May 2012 (U=2−Script error: No such module "Check for unknown parameters".),[8] and Script error: No such module "val". hours with an amplitude of Script error: No such module "val". magnitude by the Spanish group of asteroid observers, OBAS, in January 2016 (U=2−Script error: No such module "Check for unknown parameters".).[9]

Diameter and albedo

According to the surveys carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), the Japanese Akari satellite, and the Infrared Astronomical Satellite IRAS, Fatme measures (Script error: No such module "val".), (Script error: No such module "val".) and (Script error: No such module "val".) kilometers in diameter and its surface has an albedo of (Script error: No such module "val".), (Script error: No such module "val".) and (Script error: No such module "val".), respectively.[10][11][12][13] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0361 and a diameter of 88.11 kilometers based on an absolute magnitude of 9.5.[14] Alternative mean-diameter measurements published by the WISE team include (Script error: No such module "val".), (Script error: No such module "val".) and (Script error: No such module "val".) with corresponding albedos of (Script error: No such module "val".), (Script error: No such module "val".) and (Script error: No such module "val".).[4][14]

References

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  1. ↑ a b Script error: No such module "citation/CS1".
  2. ↑ a b Script error: No such module "citation/CS1".
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  4. ↑ a b Script error: No such module "citation/CS1".
  5. ↑ a b Script error: No such module "citation/CS1".
  6. ↑ Script error: No such module "Citation/CS1".
  7. ↑ Script error: No such module "Citation/CS1".
  8. ↑ a b 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". (online, AcuA catalog p. 153)
  14. ↑ a b Script error: No such module "citation/CS1".

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External links

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