2015 XJ351 is a Near-Earth asteroid with an estimated diameter of around 140 meters. It was discovered in 2015 when it passed 0.144 AU (21.5 million km; 56 LD) from Earth. The object is not risk-listed.
| Designations | |
|---|---|
Minor planet category | Apollo[1] |
| Orbital characteristics[1] | |
| Uncertainty parameter 6 | |
| Observation arc | 24 days |
| Aphelion | 1.949 AU |
| Perihelion | 0.780 AU |
Semi-major axis | 1.3642 AU |
| Eccentricity | 0.42860 |
Orbital period (sidereal) | 582.00 days |
Mean anomaly | 343.106° |
Mean motion | 0.619° |
| Inclination | 19.371° |
Longitude of ascending node | 254.970° |
Argument of perihelion | 76.790° |
| Earth MOID | 0.000288 AU |
| Physical characteristics | |
| Dimensions | 88–200 meters |
Absolute magnitude (H) | 22.4 |
With a short observation arc of 24 days, the Earth approach of June 2047 is poorly constrained and could be anywhere from 0.00056 AU (84 thousand km; 0.22 LD) to 0.097 AU (14.5 million km; 38 LD).[1] The nominal 2047 Earth approach is 0.01 AU (1.5 million km; 3.9 LD) ±4 days.
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