280 Philia
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 29 October 1888 |
| Designations | |
| MPC designation | (280) Philia |
|
Named after
|
Philia |
| Main belt | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 126.17 yr (46083 d) |
| Aphelion | 3.26133 AU (487.888 Gm) |
| Perihelion | 2.62787 AU (393.124 Gm) |
| 2.94460 AU (440.506 Gm) | |
| Eccentricity | 0.10756 |
| 5.05 yr (1845.6 d) | |
|
Average orbital speed
|
17.31 km/s |
| 52.7987° | |
| 0° 11m 42.212s / day | |
| Inclination | 7.44582° |
| 9.91179° | |
| 90.0510° | |
| Earth MOID | 1.65638 AU (247.791 Gm) |
| Jupiter MOID | 1.90858 AU (285.520 Gm) |
| Jupiter Tisserand parameter | 3.250 |
| Physical characteristics | |
| Dimensions | 45.69±2.0 km |
| Mass | unknown |
|
Mean density
|
unknown |
|
Equatorial surface gravity
|
unknown |
|
Equatorial escape velocity
|
unknown |
| 70.26 h (2.928 d) | |
| 0.0444±0.004 | |
| Temperature | unknown |
| unknown | |
| 10.9 | |
280 Philia is a fairly large Main belt asteroid. It was discovered by Johann Palisa on 29 October 1888 at the Vienna Observatory.
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