2017 XO2
2017 XO2, also written 2017 XO2, is a sub-kilometer asteroid and near-Earth object of the Apollo group approximately 110 meters (360 feet) in diameter. The asteroid was discovered by Pan-STARRS in December 2017, after it already had approached Earth at 0.051 AU (7,600,000 km) or 20 lunar distances (LD) on 6 November 2017. On 26 April 2057, it will pass Earth at a similar distance of 21 LD again.
Orbit crossing from Venus to Mars, before and after 2057 Earth flyby | |
| Discovery | |
|---|---|
| Discovered by | Pan-STARRS |
| Discovery site | Haleakala Obs. |
| Discovery date | 10 December 2017 (first observed only) |
| Designations | |
MPC designation | 2017 XO2 |
Minor planet category | NEO · Apollo |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 6.21 yr (2,268 d) |
| Aphelion | 1.5451 AU |
| Perihelion | 0.7198 AU |
Semi-major axis | 1.1325 AU |
| Eccentricity | 0.3644 |
Orbital period (sidereal) | 1.21 yr (440 d) |
Mean anomaly | 160.18° |
Mean motion | 0° 49m 4.08s / day |
| Inclination | 14.523° |
Longitude of ascending node | 218.37° |
| 93.787° | |
| Earth MOID | 0.00027 AU (0.11 LD) |
| Physical characteristics | |
Mean diameter | 100 m (est. at 0.20) 110 m (sentry est.) 200 m (est. at 0.05) |
| 22.4 | |
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