| Minorplanet: | yes |
| Background: |
|
| 386 Siegena | |
| Discovered: | 1 March 1894 |
| Mpc Name: | (386) Siegena |
| Alt Names: | 1894 AY |
| Pronounced: | [1] |
| Adjective: | Siegenian |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Semimajor: | 2.89571AU |
| Perihelion: | 2.40159AU |
| Aphelion: | 3.38983abbr=onNaNabbr=on |
| Eccentricity: | 0.17064 |
| Period: | 4.93 yr (1799.8 d) |
| Inclination: | 20.2568° |
| Asc Node: | 166.886° |
| Arg Peri: | 219.478° |
| Dimensions: | 170.35 ± 8.40 km |
| Density: | 3.14 ± 0.76 g/cm3 |
| Rotation: | 9.763abbr=onNaNabbr=on |
| Abs Magnitude: | 7.43 |
| Mean Motion: | / day |
| Orbit Ref: | [2] |
| Observation Arc: | 122.08 yr (44590 d) |
| Uncertainty: | 0 |
386 Siegena is a very large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of primitive carbonaceous material.
It was discovered by Max Wolf on March 1, 1894, in Heidelberg.
During 1999, the asteroid was observed occulting a star. The resulting chords provided a diameter estimate of 174 km.