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Discovery and designation
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| Discovered by | S. J. Bus |
| Discovery site | Siding Spring Observatory |
| Discovery date | March 1, 1981 |
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Designations
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| MPC designation | 7158 |
| Named after | NASA Infrared Telescope Facility |
| Alternate name(s) | 1981 ES8 |
| Epoch May 14, 2008 | |
| Ap | 3.3476532 |
| Peri | 2.6779838 |
| Eccentricity | 0.1111367 |
| Orbital period | 1910.1078824 |
| Mean anomaly | 235.15207 |
| Inclination | 9.65679 |
| Longitude of ascending node | 207.28180 |
| Argument of peri | 159.52474 |
| Absolute magnitude (H) | 12.4 |
7158 IRTF (1981 ES8) is a main-belt asteroid discovered on March 1, 1981 by S. J. Bus at Siding Spring Observatory in the course of the U.K. Schmidt-Caltech Asteroid Survey.
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