| Minorplanet: | yes |
| Mpc Name: | (198) Ampella |
| Background: |
|
| 198 Ampella | |
| Named After: | Ampelos |
| Alt Names: | A879 LA; |
| Mp Category: | Main belt |
| Semimajor: | 2.4589AU |
| Perihelion: | 1.8986AU |
| Aphelion: | 3.0193abbr=onNaNabbr=on |
| Period: | 3.86 yr (1408.4 d) |
| Inclination: | 9.3113° |
| Eccentricity: | 0.22788 |
| Discoverer: | A. Borrelly |
| Discovered: | 13 June 1879 |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Asc Node: | 268.45° |
| Arg Peri: | 88.586° |
| Mean Anomaly: | 131.10° |
| Mean Motion: | / day |
| Observation Arc: | 131.26 yr (47944 d) |
| Uncertainty: | 0 |
| Moid: | 0.921007AU |
| Jupiter Moid: | 2.52287AU |
| Tisserand: | 3.437 |
| Mass: | (2.62 ± 1.24/0.49) kg |
| Density: | 3.121 ± 1.477/0.588 g/cm |
| Rotation: | 10.379abbr=onNaNabbr=on |
| Spectral Type: | S |
| Abs Magnitude: | 8.58 |
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.