280 Philia
| Discovery A | |
|---|---|
| Discoverer | Johann Palisa |
| Discovery Date | October 29, 1888 |
| Alternate Designations | B |
| Category | Main belt |
| Orbital Elements C Epoch 30 January, 2005 (JD 2453400.5) | |
| Eccentricity (e) | 0.106 |
| Semi-Major Axis (a) | 440.483 Gm (2.944 AU) |
| Perihelion (q) | 393.613 Gm (2.631 AU) |
| Aphelion (Q) | 487.353 Gm (3.258 AU) |
| Orbital Period (P) | 1845.424 d (5.05 a) |
| Mean Orbital Speed | 17.36 km/s |
| Inclination (i) | 7.446° |
| Longitude of the Ascending Node (Ω) | 10.404° |
| Argument of Perihelion (ω) | 85.748° |
| Mean Anomaly (M) | 317.497° |
| Physical Characteristics | |
| Dimensions | 46.0 km |
| Mass | unknown |
| Density | unknown |
| Surface Gravity | unknown |
| Escape Velocity | unknown |
| Rotation Period | unknown |
| Spectral Class | unknown |
| Absolute Magnitude | 10.7 |
| Albedo | unknown |
| Mean Surface Temperature | unknown |
280 Philia is a fairly large Main belt asteroid.
It was discovered by Johann Palisa on October 29, 1888 in Vienna.
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