| Minorplanet: | yes |
| Background: |
|
| 303 Josephina | |
| Discovered: | 12 February 1891 |
| Mpc Name: | (303) Josephina |
| Alt Names: | A891 CA; 1948 MA 1974 KC |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Semimajor: | 3.12305AU |
| Perihelion: | 2.92967AU |
| Aphelion: | 3.31643abbr=onNaNabbr=on |
| Eccentricity: | 0.061920 |
| Period: | 5.52 yr (2015.9 d) |
| Inclination: | 6.87269° |
| Asc Node: | 344.002° |
| Arg Peri: | 64.1014° |
| Rotation: | 12.497abbr=onNaNabbr=on |
| Abs Magnitude: | 8.9 |
| Single Temperature: | unknown |
| Mean Motion: | / day |
| Observation Arc: | 124.85 yr (45600 d) |
| Uncertainty: | 0 |
303 Josephina is a large Main belt asteroid.[1] It was discovered by Elia Millosevich on 12 February 1891 in Rome. It was first of his two asteroid discoveries. The other was 306 Unitas.