143 Adria
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| Discovery and designation | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | February 23, 1875 |
| Designations | |
| Named after | Adriatic Sea |
| Minor planet category | Main belt |
| Orbital characteristics[1] | |
| 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° |
| Physical characteristics | |
| 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 |
| Rotation period | 22.005[2] h |
| Geometric albedo | 0.10 |
| Temperature | ~167 K |
| Spectral type | C |
| Absolute magnitude (H) | 9.12 |
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143 Adria is a fairly large main-belt asteroid that was discovered by Austrian astronomer J. Palisa on February 23, 1875, at Pula, and named after the Adriatic Sea, on the coast of which the discovery was made. This dark-coloured asteroid has probably a primitive carbonaceous chondritic composition.
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.
Photometric observations of this asteroid made during 2008 at the Organ Mesa Observatory in Las Cruces, New Mexico gave an irregular light curve with a period of 22.005 ± 0.001 hours and a brightness variation of 0.08 ± 0.01 in magnitude.[2]
References
- ↑ Yeomans, Donald K., "143 Adria", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-30.
- ↑ 2.0 2.1 Pilcher, Frederick (September 2008), "Period Determinations for 26 Proserpina, 34 Circe 74 Galatea, 143 Adria, 272 Antonia, 419 Aurelia, and 557 Violetta", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 35 (3): 135-138, Bibcode:2008MPBu...35..135P.
External links
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