280 Philia
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| Discovery A | |
|---|---|
| Discoverer | Johann Palisa |
| Discovery date | October 29, 1888 |
| Alternate designations B |
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| Category | Main belt |
| Orbital elements C | |
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| 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) | 1845.459 d (5.05 a) |
| Mean orbital speed | 17.31 km/s |
| Inclination (i) | 7.446° |
| Longitude of the ascending node (Ω) |
10.404° |
| Argument of perihelion (ω) |
85.749° |
| Mean anomaly (M) | 317.496° |
| Physical characteristics D | |
| 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 (geometric) | 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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