2018 CL

2018 CL
Discovery
Discovered by	Zwicky Transient Facility
Discovery site	Palomar Obs.
Discovery date	5 February 2018
Designations
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°
Argument of perihelion	141.70°
Earth MOID	0.0046 AU (1.8 LD)
Physical characteristics
Mean diameter	50 m (160 ft)
Apparent magnitude	25.5–15 (at closest approach)
Absolute magnitude (H)	25.525

2018 CL is a small 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.²⁴

References

"2018 CL". Minor Planet Center. Retrieved 15 February 2018.
Ye, Quan-Zhi (February 2018). "First Discovery of a Small Near Earth Asteroid with ZTF (2018 CL)". The Astronomer's Telegram. 11274 (11274): 1. Bibcode:2018ATel11274....1Y. Retrieved 22 February 2018.
"JPL Small-Body Database Browser: (2018 CL)" (2018-02-07 last obs.). Jet Propulsion Laboratory. Retrieved 15 February 2018.
Kulkarni, S.R.; et al. (7 February 2018). "The Zwicky Transient Facility (ZTF) begins - ATel #11266". The Astronomer's Telegram. Retrieved 8 February 2018.

External links

NASA Planetary Data System: 2018 CL
2018 CL at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
2018 CL at ESA–space situational awareness
- Ephemerides · Observations · Orbit · Physical properties · Summary
2018 CL at the JPL Small-Body Database

[MPC-object-1] "2018 CL". Minor Planet Center. Retrieved 15 February 2018.

[Ye-2018-2] Ye, Quan-Zhi (February 2018). "First Discovery of a Small Near Earth Asteroid with ZTF (2018 CL)". The Astronomer's Telegram. 11274 (11274): 1. Bibcode:2018ATel11274....1Y. Retrieved 22 February 2018.

[jpldata-3] "JPL Small-Body Database Browser: (2018 CL)" (2018-02-07 last obs.). Jet Propulsion Laboratory. Retrieved 15 February 2018.

[AT-20180207-4] Kulkarni, S.R.; et al. (7 February 2018). "The Zwicky Transient Facility (ZTF) begins - ATel #11266". The Astronomer's Telegram. Retrieved 8 February 2018.

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