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Discovery
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| Discovered by | Johann Palisa |
| Discovery date | October 11, 1891 |
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Designations
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| Minor planet category |
Main belt (Eos) |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 501.431 Gm (3.352 AU) |
| Perihelion | 399.92 Gm (2.673 AU) |
| Semi-major axis | 450.676 Gm (3.013 AU) |
| Eccentricity | 0.113 |
| Orbital period | 1909.845 d (5.23 a) |
| Average orbital speed | 17.16 km/s |
| Mean anomaly | 242.461° |
| Inclination | 9.381° |
| Longitude of ascending node | 220.047° |
| Argument of perihelion | 151.497° |
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Physical characteristics
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| Dimensions | 17 - 37 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Albedo | unknown |
| Temperature | unknown |
| Spectral type | unknown |
| Absolute magnitude (H) | 10.7 |
320 Katharina is a small Main belt asteroid.
It was discovered by Johann Palisa on October 11, 1891 in Vienna.
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