| Minorplanet: | yes |
| Background: |
|
| 579 Sidonia | |
| Mpc Name: | (579) Sidonia |
| Pronounced: | [1] |
| Alt Names: | 1905 SD |
| Discovered: | 3 November 1905 |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Eccentricity: | 0.080631 |
| Semimajor: | 3.0107AU |
| Perihelion: | 2.768AU |
| Aphelion: | 3.2535abbr=onNaNabbr=on |
| Period: | 5.22 yr (1908.1 d) |
| Inclination: | 11.009° |
| Asc Node: | 82.737° |
| Arg Peri: | 228.785° |
| Abs Magnitude: | 8.07 7.85 |
| Mean Motion: | / day |
| Observation Arc: | 109.22 yr (39891 d) |
| Uncertainty: | 0 |
| Rotation: | 16.286abbr=onNaNabbr=on |
| Mean Radius: | km |
579 Sidonia is a minor planet orbiting the Sun that was discovered by the German astronomer August Kopff on November 3, 1905. It was named after a character in Christoph Willibald Gluck's opera Armide. The name may have been inspired by the asteroid's provisional designation 1905 SD.
This is a member of the dynamic Eos family of asteroids that most likely formed as the result of a collisional breakup of a parent body.