6978 Hironaka
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| Discovery and designation | |
|---|---|
| Discovered by | K. Endate and K. Watanabe |
| Discovery site | Kitami |
| Discovery date | September 12, 1993 |
| Designations | |
| MPC designation | 6978 |
| Named after | Heisuke Hironaka |
| Alternative names | 1993 RD |
| Orbital characteristics | |
| Epoch May 14, 2008 | |
| Aphelion | 3.0050555 |
| Perihelion | 2.1217521 |
| Eccentricity | 0.1722911 |
| Orbital period | 1499.0771306 |
| Mean anomaly | 264.07342 |
| Inclination | 7.47159 |
| Longitude of ascending node | 339.26202 |
| Argument of perihelion | 302.02261 |
| Physical characteristics | |
| Absolute magnitude (H) | 13.1 |
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6978 Hironaka (1993 RD) is a main-belt asteroid discovered on September 12, 1993 by K. Endate and K. Watanabe at Kitami.
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