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Discovery and designation
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| Discovered by | Masanori Matsuyama and Kazuro Watanabe |
| Discovery site | Kushiro |
| Discovery date | January 30, 1990 |
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Designations
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| MPC designation | 4459 |
| Alternate name(s) | 1990 BP2 |
| Epoch May 14, 2008 | |
| Ap | 2.5205211 |
| Peri | 1.9905307 |
| Eccentricity | 0.1174871 |
| Orbital period | 1237.2861544 |
| Mean anomaly | 192.57946 |
| Inclination | 2.78996 |
| Longitude of ascending node | 157.36838 |
| Argument of peri | 282.59014 |
| Absolute magnitude (H) | 13.7 |
4459 Nusamaibashi (1990 BP2) is a main-belt asteroid discovered on January 30, 1990 by Masanori Matsuyama and Kazuro Watanabe at Kushiro.
This was named for Nusamai-bashi, a bridge which represents Kushiro.
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