| Discovery | |
|---|---|
| Discovered by | C. H. F. Peters |
| Discovery date | February 20, 1876 |
| Designations | |
| Alternate name | |
| Minor planet category | Main belt |
| Epoch January 30, 2005 (JD 2453400.5) | |
| Aphelion | 435.556 Gm (2.912 AU) |
| Perihelion | 380.561 Gm (2.544 AU) |
| Semi-major axis | 408.058 Gm (2.728 AU) |
| Eccentricity | 0.067 |
| Orbital period | 1645.485 d (4.51 a) |
| Average orbital speed | 18.01 km/s |
| Mean anomaly | 308.565° |
| Inclination | 3.824° |
| Longitude of ascending node | 8.856° |
| Argument of perihelion | 49.974° |
| Physical characteristics | |
| Dimensions | 81.2 km |
| Mass | 5.6×1017 kg |
| Mean density | 2.0? g/cm³ |
| Equatorial surface gravity | 0.0227 m/s² |
| Escape velocity | 0.0429 km/s |
| Rotation period | 0.234 d (5.61 h) 1 |
| Albedo | 0.063 3 |
| Temperature | ~170 K |
| Spectral type | C 2 |
| Absolute magnitude (H) | 9.08 |
| | |
160 Una is a fairly large and dark, primitive Main belt asteroid.
It was discovered by C. H. F. Peters on February 20, 1876 in Clinton, New York. It is named after a character in Edmund Spenser's epic poem The Faerie Queene (1590).
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