| Minorplanet: | yes |
| Background: |
|
| 440 Theodora | |
| Discovered: | 13 October 1898 |
| Mpc Name: | (440) Theodora |
| Pronounced: | [1] |
| Alt Names: | 1898 EC |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Semimajor: | 2.21043AU |
| Perihelion: | 1.97352AU |
| Aphelion: | 2.44735abbr=onNaNabbr=on |
| Eccentricity: | 0.10718 |
| Period: | 3.29 yr (1200.4 d) |
| Inclination: | 1.59566° |
| Asc Node: | 292.133° |
| Arg Peri: | 179.039° |
| Dimensions: | 13.6 km |
| Rotation: | 4.828abbr=onNaNabbr=on |
| Abs Magnitude: | 11.6 |
| Albedo: | 0.630 |
| Mean Motion: | / day |
| Observation Arc: | 117.50 yr (42917 d) |
| Uncertainty: | 0 |
440 Theodora is a small Main belt asteroid.
It was discovered by E. F. Coddington on October 13, 1898, at Mount Hamilton. It was his second asteroid discovery.