223 Rosa
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 9 March 1882 |
| Designations | |
| MPC designation | (223) Rosa |
| A887 BA, 1942 EL | |
| Main belt (Themis) | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 130.29 yr (47590 d) |
| Aphelion | 3.45415 AU (516.733 Gm) |
| Perihelion | 2.73689 AU (409.433 Gm) |
| 3.09552 AU (463.083 Gm) | |
| Eccentricity | 0.11586 |
| 5.45 yr (1989.3 d) | |
|
Average orbital speed
|
16.94 km/s |
| 309.511° | |
| 0° 10m 51.488s / day | |
| Inclination | 1.93552° |
| 47.9276° | |
| 61.7716° | |
| Earth MOID | 1.75274 AU (262.206 Gm) |
| Jupiter MOID | 1.65986 AU (248.312 Gm) |
| Jupiter Tisserand parameter | 3.212 |
| Physical characteristics | |
| Dimensions | 87.61±4.4 km |
| 20.283 h (0.8451 d) | |
| 0.0309±0.003 | |
| CP | |
| 9.68, 9.72 | |
223 Rosa is a large Themistian asteroid. It is classified as a combination of C-type and P-type asteroids, so it is probably composed of carbonaceous material rich in water ice. It was discovered by Johann Palisa on March 9, 1882 in Vienna. The origin of the name is not known.
Photometric observations made in 2011–2012 at the Organ Mesa Observatory in Las Cruces, New Mexico produced a light curve with a period of 20.283 ± 0.002 hours and a brightness variation of 0.13 ± 0.02 in magnitude. The curve has two asymmetrical maxima and minima per 20.283-hour cycle.
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