223 Rosa
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 9 March 1882 |
| Designations | |
| A887 BA, 1942 EL | |
| Main belt (Themis) | |
| Orbital characteristics[1] | |
| 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) |
| TJupiter | 3.212 |
| Physical characteristics | |
| Dimensions | 87.61±4.4 km |
| 20.283 h (0.8451 d) | |
| 0.0309±0.003 | |
| CP | |
| 9.68,[1] 9.72[2] | |
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.[3]
References
- ^ a b Yeomans, Donald K., "223 Rosa", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 12 May 2016.
- ^ Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", The Minor Planet Bulletin, vol. 34, pp. 113–119, Bibcode:2007MPBu...34..113W.
- ^ Pilcher, Frederick (July 2012), "Rotation Period Determinations for 46 Hestia, 223 Rosa, 225 Henrietta, 266 Aline, 750 Oskar, and 765 Mattiaca", The Minor Planet Bulletin, vol. 39, no. 3, pp. 171–173, Bibcode:2012MPBu...39..171P.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- 223 Rosa at the JPL Small-Body Database
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