2020 CW
2020 CW is a tiny near-Earth asteroid of the Apollo group, approximately 1 meter (3 ft) in diameter. It was first observed by the Mount Lemmon Survey on 1 February 2020, when it passed Earth very closely at a nominal distance of only 0.041 lunar distances (0.000105 astronomical units). The object's orbital elements remain highly uncertain.
| Discovery | |
|---|---|
| Discovered by | MLS |
| Discovery site | Mount Lemon Obs. |
| Discovery date | 1 February 2020 (first observed only) |
| Designations | |
MPC designation | 2020 CW |
Minor planet category | NEO · Apollo |
| Orbital characteristics | |
| Epoch 1 February 2020 (JD 2458880.5) | |
| Uncertainty parameter 8 · — | |
| Observation arc | 0 day |
| Aphelion | 1.9980 AU |
| Perihelion | 0.4769 AU |
Semi-major axis | 1.2375 AU |
| Eccentricity | 0.6146 |
Orbital period (sidereal) | 1.38 yr (503 d) |
Mean anomaly | 322.21° |
Mean motion | 0° 42m 57.6s / day |
| Inclination | 2.1259° |
Longitude of ascending node | 132.01° |
| 110.66° | |
| Earth MOID | 0.030 LD (0.000076 AU) |
| Physical characteristics | |
Mean diameter | 1.1 m (est at 0.14) |
| 32.5 32.6 | |
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