2018 CF2
Orbit and classification. belongs to the Apollo asteroids, the largest group of near-Earth objects with nearly 10 thousand known members, which cross the orbit of Earth. Based on a high uncertainty, it orbits the Sun at a distance of 0.91–2.77 AU once every 2 years and 6 months (910 days; semi-major axis of 1.84 AU). Its orbit has an eccentricity of 0.51 and an inclination of 16° with respect to the ecliptic. With an aphelion of 2.77 AU, it is also a Mars-crosser, as it crosses the orbit of the Red Planet at 1.666  AU. The body's observation arc begins at Mount Lemmon with its first observation on 7 February 2018. 2018 flyby. On 6 February 2018, 18:45 UTC, the day before its first observation, it had a flyby with the Earth at a nominal distance of 0.25 lunar distances (LD). Its next close approach to Earth is projected to occur on 23 January 2023, at . After the 2018-passage, the body's minimum orbital intersection distance with Earth increased to . Physical characteristics. The Minor Planet Center estimates a diameter of . Based on a generic magnitude-to-diameter conversion using an absolute magnitude  of 28.036, the body measures between 7 and 14 meters in diameter for an assumed albedo of 0.057 and 0.20, which represent typical values for carbonaceous and stony asteroids, respectively. As of 2018, no rotational lightcurve of has been obtained from photometric observations. The body's rotation period, pole and shape remain unknown. Numbering and naming. This minor planet has not yet been numbered.