2018 CL
2018 CL is a micro-asteroid and a near-Earth object of the Aten group, approximately 50 metres (160 feet) in diameter. It was the first confirmed finding, detected on 5 February 2018, announced on 8 February 2018, of the Zwicky Transient Facility project, located at Palomar Observatory, California, in the United States.
| Discovery | |
|---|---|
| Discovered by | Zwicky Transient Facility |
| Discovery site | Palomar Obs. |
| Discovery date | 5 February 2018 |
| Designations | |
MPC designation | 2018 CL |
Minor planet category | NEO · Aten |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 6 | |
| Observation arc | 2 days |
| Aphelion | 1.0606 AU |
| Perihelion | 0.6484 AU |
Semi-major axis | 0.8545 AU |
| Eccentricity | 0.2412 |
Orbital period (sidereal) | 0.79 yr (289 days) |
Mean anomaly | 294.91° |
Mean motion | 1° 14m 52.08s / day |
| Inclination | 11.847° |
Longitude of ascending node | 136.30° |
| 141.70° | |
| Earth MOID | 0.0046 AU (1.8 LD) |
| Physical characteristics | |
Mean diameter | 50 m (160 ft) |
| 25.5–15 (at closest approach) | |
| 25.525 | |
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