| Minorplanet: | yes |
| Background: |
|
| 401 Ottilia | |
| Discovered: | 16 March 1895 |
| Mpc Name: | (401) Ottilia |
| Alt Names: | 1895 BT |
| Mp Category: | Main belt (Cybele) |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Semimajor: | 3.3448AU |
| Perihelion: | 3.2222AU |
| Aphelion: | 3.46736abbr=onNaNabbr=on |
| Eccentricity: | 0.036643 |
| Period: | 6.12 yr (2234.4 d) |
| Inclination: | 5.9715° |
| Asc Node: | 36.138° |
| Arg Peri: | 294.690° |
| Rotation: | 6.049abbr=onNaNabbr=on |
| Abs Magnitude: | 9.2 |
| Mean Motion: | / day |
| Orbit Ref: | [1] |
| Observation Arc: | 121.08 yr (44225 d) |
| Uncertainty: | 0 |
401 Ottilia is a large main-belt asteroid. It was discovered by Max Wolf on March 16, 1895, in Heidelberg. It is named after the Germanic folkloric character Ottilia.
The semi-major axis of the orbit of 401 Ottilia lies just outside the 2/1 Kirkwood gap, located at 3.27 AU. 401 Ottilia is part of the Cybele asteroid group.