| Minorplanet: | yes |
| Background: |
|
| 280 Philia | |
| Discovered: | 29 October 1888 |
| Mpc Name: | (280) Philia |
| Alt Names: | A888 UB |
| Epoch: | 31 July 2016 (JD 2457600.5) |
| Semimajor: | 2.9446AU |
| Perihelion: | 2.62787AU |
| Aphelion: | 3.26133abbr=onNaNabbr=on |
| Eccentricity: | 0.10756 |
| Period: | 1845.6days |
| Inclination: | 7.44582° |
| Asc Node: | 9.91179° |
| Arg Peri: | 90.0510° |
| Rotation: | 70.26abbr=onNaNabbr=on |
| Abs Magnitude: | 10.9 |
| Mean Motion: | / day |
| Observation Arc: | 46083days |
| Uncertainty: | 0 |
280 Philia is a fairly large Main belt asteroid. It was discovered by Johann Palisa on 29 October 1888 at the Vienna Observatory.
Sparse data collected during a 1987 study indicated this asteroid has a rotation period of approximately 64 hours, which is much longer than can be continually observed from one site. During 2010−2011, an international collaboration to study the asteroid collected 9,037 photometric data points over 38 sessions. The resulting light curve analysis displays a rotation period of with a brightness variation of in magnitude.