| Minorplanet: | yes |
| Background: |
|
| 285 Regina | |
| Discovered: | 3 August 1889 |
| Mpc Name: | (285) Regina |
| Alt Names: | A889 PA, 1911 QJ |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Semimajor: | 3.08335AU |
| Perihelion: | 2.4454AU |
| Aphelion: | 3.7213abbr=onNaNabbr=on |
| Eccentricity: | 0.20690 |
| Period: | 5.41 yr (1977.6 d) |
| Inclination: | 17.6192° |
| Asc Node: | 311.385° |
| Arg Peri: | 14.4439° |
| Avg Speed: | 16.97 km/s |
| Rotation: | 9.542abbr=onNaNabbr=on |
| Abs Magnitude: | 10.7 |
| Single Temperature: | unknown |
| Mean Motion: | / day |
| Observation Arc: | 104.63 yr (38215 d) |
| Uncertainty: | 0 |
285 Regina is a typical, although fairly large, Main belt asteroid. It was discovered by Auguste Charlois on 3 August 1889 in Nice, France. The asteroid is a suspected interloper in the Eucharis asteroid family.
Analysis of the asteroid light curve generated from photometric data collected during 2008 show a rotation period of with a brightness variation of in magnitude.