9147 Kourakuen
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| Discovery and designation | |
|---|---|
| Discovered by | H. Kosai and K. Hurukawa |
| Discovery site | Kiso Station of the Tokyo Astronomical Observatory |
| Discovery date | February 18, 1977 |
| Designations | |
| MPC designation | 9147 |
| Alternative names | 1977 DD1 |
| Orbital characteristics | |
| Epoch May 14, 2008 | |
| Aphelion | 2.4220708 |
| Perihelion | 1.9604122 |
| Eccentricity | 0.1053418 |
| Orbital period | 1184.7693555 |
| Mean anomaly | 327.21251 |
| Inclination | 5.81671 |
| Longitude of ascending node | 142.37916 |
| Argument of perihelion | 252.72543 |
| Physical characteristics | |
| Absolute magnitude (H) | 13.7 |
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9147 Kourakuen (1977 DD1) is a main-belt asteroid discovered on February 18, 1977 by H. Kosai and K. Hurukawa at the Kiso Station of the Tokyo Astronomical Observatory.
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