+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2011 CL50) Classification: Aten [NEO]          SPK-ID: 3557536 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1445728726985818 8.9278e-06   a .8861286010782512 0.00017871 au q .7580184436399928 0.00014501 au i .1882456725463093 0.00074321 deg node 12.57560163751749 1.0036 deg peri 293.1066180078728 0.89695 deg M 252.5606729703003 0.26368 deg tp 2459091.429402402178 (2020-Aug-29.92940240) 0.25067 TDB period 304.6797273379728 0.83 0.09217 0.0002523 d yr n 1.181568603678911 0.00035744 deg/d Q 1.01423875851651 0.00020455 au   Orbit Determination Parameters    # obs. used (total)      28      data-arc span      8 days      first obs. used      2011-02-12      last obs. used      2011-02-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .54722      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 08:54:26   Additional Information  Earth MOID = .00191197 au   Jupiter MOID = 4.09446 au   T_jup = 6.689  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 27.6   n/a MPO194139   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2020-Oct-27 08:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin