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Discovery and designation
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| Discovered by | M. W. Buie |
| Discovery site | Anderson Mesa Station of the Lowell Observatory |
| Discovery date | March 7, 1997 |
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Designations
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| MPC designation | 9116 |
| Alternate name(s) | 1997 ES40 |
| Epoch August 27, 2011 (JD 2455800.5) | |
| Aphelion | 2.5942523 AU |
| Perihelion | 2.0410001 AU |
| Semi-major axis | 2.3176262 AU |
| Eccentricity | 0.1193575 |
| Orbital period | 3.52835 yr (1288.73 d) |
| Mean anomaly | 142.62292° |
| Inclination | 3.97224° |
| Longitude of ascending node | 196.54827° |
| Argument of perihelion | 224.5303° |
| Absolute magnitude (H) | 15.2 |
9116 Billhamilton (1997 ES40) is a main-belt asteroid discovered on March 7, 1997 by M. W. Buie at the Anderson Mesa Station of the Lowell Observatory.
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