(585310) 2017 YZ1
(585310) 2017 YZ1, provisional designation: 2017 YZ1, is a sub-kilometer asteroid on an eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 250 meters (800 feet) in diameter. It was first observed on 20 December 2017, by astronomers with the Mount Lemmon Survey at Mount Lemmon Observatory near Tucson, Arizona, in the United States. On 29 January 2018, it passed Earth at 125 lunar distances.
| Discovery | |
|---|---|
| Discovered by | Mount Lemmon Srvy. |
| Discovery site | Mount Lemon Obs. |
| Discovery date | 20 December 2017 |
| Designations | |
MPC designation | (585310) 2017 YZ1 |
Alternative designations | 2017 YZ1 |
Minor planet category | NEO · PHA · Apollo |
| Orbital characteristics | |
| Epoch 1 July 2021 (JD 2459396.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 8.78 (3,206 days) |
| Aphelion | 1.7715 AU |
| Perihelion | 0.8830 AU |
Semi-major axis | 1.3272 AU |
| Eccentricity | 0.3347 |
Orbital period (sidereal) | 1.53 yr (558 d) |
Mean anomaly | 43.773° |
Mean motion | 0° 38m 40.551s / day |
| Inclination | 20.875° |
Longitude of ascending node | 277.75° |
| 298.39° | |
| Earth MOID | 0.00012 AU (0.047 LD) |
| Physical characteristics | |
Mean diameter | 0.26 km |
| 20.43 | |
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