143 Adria
From Wikipedia, the free encyclopedia
|
Discovery[1] and designation
|
|
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | February 23, 1875 |
|
Designations
|
|
| Alternative names[1] | |
| Minor planet category |
Main belt |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 442.325 Gm (2.957 AU) |
| Perihelion | 384.207 Gm (2.568 AU) |
| Semi-major axis | 413.266 Gm (2.763 AU) |
| Eccentricity | 0.070 |
| Orbital period | 1677.083 d (4.59 a) |
| Average orbital speed | 17.90 km/s |
| Mean anomaly | 196.062° |
| Inclination | 11.469° |
| Longitude of ascending node | 333.233° |
| Argument of perihelion | 250.984° |
| Dimensions | 89.9 km |
| Mass | 7.6×1017 kg |
| Mean density | 2.0 g/cm³ |
| Equatorial surface gravity | 0.0251 m/s² |
| Equatorial escape velocity | 0.0475 km/s |
| Sidereal rotation period |
? d |
| Axial tilt | ?° |
| Pole ecliptic latitude | ? |
| Pole ecliptic longitude | ? |
| Geometric albedo | 0.10 |
| Temperature | ~167 K |
| Spectral type | C |
| Absolute magnitude | 9.12 |
143 Adria is a fairly large main belt asteroid. This dark-coloured asteroid has probably a primitive carbonaceous chondritic composition.
It was discovered by J. Palisa on February 23, 1875 and named after the Adriatic Sea, on the coast of which the discovery was made.
One occultation by Adria has been reported so far, from Japan on August 21, 2000. A somewhat spherical shape measuring 98 × 86 km was observed.
|
|||||
