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Discovery
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| Discovered by | Johann Palisa |
| Discovery date | March 9, 1882 |
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Designations
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| Alternate name(s) | A887 BA, 1942 EL |
| Minor planet category |
Main belt (Themis) |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 519.792 Gm (3.475 AU) |
| Perihelion | 405.399 Gm (2.71 AU) |
| Semi-major axis | 462.596 Gm (3.092 AU) |
| Eccentricity | 0.124 |
| Orbital period | 1986.115 d (5.44 a) |
| Average orbital speed | 16.94 km/s |
| Mean anomaly | 273.279° |
| Inclination | 1.94° |
| Longitude of ascending node | 48.359° |
| Argument of perihelion | 57.875° |
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Physical characteristics
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| Dimensions | 88.0 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Albedo | unknown |
| Temperature | unknown |
| Spectral type | CP |
| Absolute magnitude (H) | 9.68 |
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.
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