2018 CB

2018 CB
Highly elliptical orbit of 2018 CB, crossing those of both Mars and Earth. Positions shown for 1 January 2018, before flyby.
Discovery[1]
Discovered byCSS
Discovery siteMount Lemmon Obs.
Discovery date4 February 2018
(first observed only)
Designations
2018 CB
NEO · Apollo[1][2]
Earth- and Mars crosser
Orbital characteristics[2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 2
Observation arc5 days
Aphelion1.8589 AU
Perihelion0.9582 AU
1.4085 AU
Eccentricity0.3197
1.67 yr (611 days)
10.249°
0° 35m 22.56s / day
Inclination5.3027°
320.79°
208.11°
Earth MOID0.0004 AU (0.2 LD)
Physical characteristics
7 m (assumed)[3]
20 m (upper limit)
>0.18
~1 (assumed)[3]
26.0[2]

2018 CB is a very bright micro-asteroid, classified as a near-Earth object of the Apollo group, less than 20 meters (66 ft) in diameter. It was first observed by astronomers of the Catalina Sky Survey at Mount Lemmon Observatory, Arizona, on 4 February 2018, during its sub-lunar close encounter with Earth.[1]

  1. ^ a b c Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference goldstoneobs was invoked but never defined (see the help page).