143 Adria
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 23 February 1875 |
| Designations | |
|
Named after
|
Adriatic Sea |
| Main belt | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 135.97 yr (49663 d) |
| Aphelion | 2.9654 AU (443.62 Gm) |
| Perihelion | 2.55537 AU (382.278 Gm) |
| 2.76036 AU (412.944 Gm) | |
| Eccentricity | 0.074263 |
| 4.59 yr (1675.1 d) | |
|
Average orbital speed
|
17.90 km/s |
| 225.257° | |
| 0° 12m 53.672s / day | |
| Inclination | 11.449° |
| 333.069° | |
| 253.346° | |
| Earth MOID | 1.57603 AU (235.771 Gm) |
| Jupiter MOID | 2.10833 AU (315.402 Gm) |
| Jupiter Tisserand parameter | 3.309 |
| Physical characteristics | |
| Dimensions | 89.93±1.9 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 |
| 22.005 h (0.9169 d) | |
| 0.0491±0.002 | |
| Temperature | ~167 K |
| C | |
| 9.12 | |
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.
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