2010 WC9

2010 WC9
Orbit of 2010 WC9 with positions before 2018 flyby
Discovery[1]
Discovered byCatalina Sky Srvy.
Discovery siteCatalina Stn.
(first observed only)
Discovery date30 November 2010
Designations
2010 WC9
ZJ99C60[2][3]
Orbital characteristics
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc7.45 yr (2,721 d)
Aphelion1.3797 AU
Perihelion0.7784 AU
1.0791 AU
Eccentricity0.2786
1.12 yr (409 d)
251.06°
0° 52m 45.48s / day
Inclination17.994°
54.655°
273.53°
Earth MOID0.00138 AU (0.5454 LD)
Venus MOID0.158 AU (23,600,000 km)[1]
Physical characteristics
8–20 minutes
23.5[4]

2010 WC9, unofficially designated ZJ99C60, is a sub-kilometer near-Earth asteroid of the Apollo group, approximately 100 meters (330 feet) in diameter. First observed for eleven days by the Catalina Sky Survey in 2010, the asteroid was recovered in May 2018 during its sub-lunar close encounter with Earth.[4]

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  3. ^ a b Cite error: The named reference EarthSky was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference h was invoked but never defined (see the help page).