2018 BF3
2018 BF3 is a micro-asteroid, classified as a near-Earth object of the Apollo group, approximately 20 meters (70 ft) in diameter. It was first observed on 20 January 2018, by astronomers of the Catalina Sky Survey at Mount Lemmon Observatory in Arizona, United States, the day after the closest flyby, due to its approach from the direction of the Sun.
Orbit and 1 Feb 2018 positions after flyby | |
| Discovery | |
|---|---|
| Discovered by | CSS |
| Discovery site | Mount Lemmon Obs. |
| Discovery date | 20 January 2018 |
| Designations | |
MPC designation | 2018 BF3 |
Minor planet category | NEO · Apollo |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 7 | |
| Observation arc | 3 days |
| Aphelion | 2.2905 AU |
| Perihelion | 0.8127 AU |
Semi-major axis | 1.5516 AU |
| Eccentricity | 0.4762 |
Orbital period (sidereal) | 1.93 yr (706 days) |
Mean anomaly | 54.414° |
Mean motion | 0° 30m 36s / day |
| Inclination | 11.691° |
Longitude of ascending node | 298.99° |
| 117.22° | |
| Earth MOID | 3.87715×10−5 AU (0.15 LD) |
| Physical characteristics | |
Mean diameter | 12–38 m 18–40 m |
| 25.908 | |
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