+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101647 (1999 CP57) Classification: Main-belt Asteroid          SPK-ID: 2101647 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2832596190724544 3.3146e-08   a 3.166879005748562 1.9944e-08 au q 2.269830064931671 1.0838e-07 au i 14.11797456768831 5.5875e-06 deg node 151.7949825090555 1.6909e-05 deg peri 304.5130211882328 1.9651e-05 deg M 311.8947148481844 9.2329e-06 deg tp 2459275.565375440476 (2021-Mar-02.06537544) 5.3891e-05 TDB period 2058.475172656446 5.64 1.9446e-05 5.324e-08 d yr n .1748867340165307 1.6521e-09 deg/d Q 4.063927946565452 2.5594e-08 au   Orbit Determination Parameters    # obs. used (total)      676      data-arc span      7932 days (21.72 yr)      first obs. used      1999-02-10      last obs. used      2020-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51553      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:59:18   Additional Information  Earth MOID = 1.31915 au   Jupiter MOID = 1.33243 au   T_jup = 3.094  [ 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 14.8   n/a MPO412744   diameter diameter 6.443 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.053   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101647 (1999 CP57)          Discovered 1999-Feb-10 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 CP57 = 2003 WM149  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Nov-26 21:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin