2018 DV1
2018 DV1 is a micro-asteroid, classified as a near-Earth object of the Aten group, approximately 6–12 meters (20–40 feet) in diameter. It was first observed on 26 February 2018, by astronomers of the Mount Lemmon Survey at Mount Lemmon Observatory, Arizona, five days prior to its sub-lunar close encounter with Earth at less than 0.3 lunar distance.
Orbit before and after 2018 flyby | |
| Discovery | |
|---|---|
| Discovered by | Mount Lemmon Srvy. |
| Discovery site | Mount Lemon Obs. |
| Discovery date | 26 February 2018 (first observed only) |
| Designations | |
MPC designation | 2018 DV1 |
Minor planet category | NEO · Aten |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 5 | |
| Observation arc | 1 day |
| Aphelion | 1.1494 AU |
| Perihelion | 0.8230 AU |
Semi-major axis | 0.9862 AU |
| Eccentricity | 0.1655 |
Orbital period (sidereal) | 358 days |
Mean anomaly | 298.67° |
Mean motion | 1° 0m 23.04s / day |
| Inclination | 5.1554° |
Longitude of ascending node | 341.12° |
| 281.37° | |
| Earth MOID | 0.000159 AU (0.062 LD) |
| Physical characteristics | |
Mean diameter | 6 m (est. at 0.20) 12 m (est. at 0.057) |
| 28.4 | |
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