198 Ampella

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198 Ampella
Discovery
Discovered by A. Borrelly, 1879
Designations
Main belt
Orbital characteristics
Aphelion 3.022 AU
Perihelion 1.894 AU
2.458 AU
Eccentricity 0.229
3.85 years
Inclination 9.30°
Physical characteristics
10.383 hours
Albedo 0.252
Spectral type
S
8.33

198 Ampella is a Main belt asteroid that was discovered by Alphonse Borrelly on June 13, 1879. The name seems to be the feminine form of Ampelos, a satyr and good friend of Dionysus in Greek mythology. It could also derive from the Ampelose (plural of Ampelos), a variety of hamadryad. It is an S-type asteroid.

So far Ampella has been observed occulting a star once, on November 8, 1991 from New South Wales, Australia.

This asteroid has been resolved by the W. M. Keck Observatory, resulting in a size estimate of 53 km. It is oblate in shape, with a size ratio of 1.22 between the major and minor axes. Measurements from the IRAS observatory gave a similar size estimate of 57 km. Photometric measurements made in 1993 give a rotation period of 10.38 hours.[1]

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