2019 BO is a tiny near-Earth asteroid of the Apollo group. It was first observed by the Catalina Sky Survey at the Mount Lemmon Observatory on 7 January 2019. It passed within 0.18 lunar distances, or 69,192 kilometres (42,994 mi) from Earth.
| Discovery[1] | |
|---|---|
| Discovered by | CSS |
| Discovery site | Mt. Lemmon Obs. |
| Discovery date | 7 January 2019 |
| Designations | |
MPC designation | 2019 BO |
Minor planet category | NEO · Apollo [2][1] |
| Orbital characteristics [2][1] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 5 | |
| Observation arc | 19 days |
| Aphelion | 2.325 AU |
| Perihelion | 0.9457236 AU |
Semi-major axis | 1.6356032 AU |
| Eccentricity | 0.4217891 |
Orbital period (sidereal) | 2.09 yr (764.2 d) |
Mean anomaly | 58.82453° |
Mean motion | 0° 28m 16.248s / day |
| Inclination | 2.78881° |
Longitude of ascending node | 295.63980° |
Argument of perihelion | 149.97352° |
| Earth MOID | 0.00057 AU |
| Physical characteristics | |
Mean diameter | 5–18 m (16–59 ft) |
Absolute magnitude (H) | 28.1[2] |
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