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Discovery
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| Discovered by | A. Borrelly |
| Discovery date | May 11, 1883 |
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Designations
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| Named after | Sterope |
| Alternate name(s) | n/a |
| Minor planet category |
Main belt |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 437.839 Gm (2.927 AU) |
| Perihelion | 358.008 Gm (2.393 AU) |
| Semi-major axis | 397.923 Gm (2.66 AU) |
| Eccentricity | 0.1 |
| Orbital period | 1584.533 d (4.34 a) |
| Average orbital speed | 18.26 km/s |
| Mean anomaly | 263.357° |
| Inclination | 7.675° |
| Longitude of ascending node | 222.121° |
| Argument of perihelion | 126.274° |
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Physical characteristics
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| Dimensions | 103.0 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 19.70 h |
| Albedo | 0.087 |
| Temperature | unknown |
| Spectral type | T |
| Absolute magnitude (H) | 8.21 |
233 Asterope is a quite large main-belt asteroid. It is a rare T-type asteroid and has a relatively dark surface.
It was discovered by A. Borrelly on May 11, 1883, in Marseilles, France.
The asteroid was named after Asterope (or Sterope), one of the Pleiades.
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