+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100195 (1994 CR12) Classification: Main-belt Asteroid          SPK-ID: 2100195 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2558233560967234 4.8041e-08   a 3.111351101753022 2.6592e-08 au q 2.315394820907326 1.5678e-07 au i 18.60896823728049 5.1823e-06 deg node 144.3715154177715 1.395e-05 deg peri 61.27099636798783 1.7186e-05 deg M 294.3205024425718 1.1229e-05 deg tp 2459566.220479869673 (2021-Dec-17.72047987) 6.5661e-05 TDB period 2004.573385141429 5.49 2.5699e-05 7.036e-08 d yr n .1795893344032405 2.3023e-09 deg/d Q 3.907307382598717 3.3394e-08 au   Orbit Determination Parameters    # obs. used (total)      478      data-arc span      9846 days (26.96 yr)      first obs. used      1994-02-07      last obs. used      2021-01-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50297      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:24:39   Additional Information  Earth MOID = 1.37569 au   Jupiter MOID = 1.37749 au   T_jup = 3.089  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.0   n/a MPO422317   diameter diameter 4.011 km 0.232 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.145   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100195 (1994 CR12)          Discovered 1994-Feb-07 by Elst, E. W. at La Silla Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1994 CR12 = 2000 KO2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-09 04:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin