| Minorplanet: | yes |
| 644 Cosima | |
| Background: |
|
| Mpc Name: | (644) Cosima |
| Alt Names: | 1907 AA |
| Discovered: | 7 September 1907 |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Eccentricity: | 0.15589 |
| Semimajor: | 2.599AU |
| Perihelion: | 2.1938AU |
| Aphelion: | 3.0041abbr=onNaNabbr=on |
| Period: | 4.19 yr (1530.4 d) |
| Inclination: | 1.0409° |
| Asc Node: | 109.975° |
| Arg Peri: | 268.690° |
| Mean Motion: | / day |
| Orbit Ref: | [1] |
| Observation Arc: | 107.84 yr (39390 d) |
| Uncertainty: | 0 |
| Abs Magnitude: | 11.13 |
| Rotation: | 7.556abbr=onNaNabbr=on |
| Mean Radius: | km |
644 Cosima is a minor planet orbiting the Sun.