+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2834338144473479 3.2672e-08   a 3.167766194208398 1.7432e-08 au q 2.269914138506554 1.0784e-07 au i 14.11772313955114 4.0195e-06 deg node 151.7925872583047 1.6205e-05 deg peri 304.4911730891827 1.831e-05 deg M 346.8927749963808 6.7993e-06 deg tp 2459275.478433143693 (2021-Mar-01.97843314) 3.8995e-05 TDB period 2059.340243589037 5.64 1.6998e-05 4.654e-08 d yr n .1748132690169686 1.443e-09 deg/d Q 4.065618249910242 2.2372e-08 au   Orbit Determination Parameters    # obs. used (total)      973      data-arc span      8056 days (22.06 yr)      first obs. used      1999-02-10      last obs. used      2021-03-02      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46638      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:37:50   Additional Information  Earth MOID = 1.3191 au   Jupiter MOID = 1.3312 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 ] 2021-Apr-18 05:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin