+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 CL5) Classification: Amor [NEO]          SPK-ID: 54115822 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4441651667583191 2.9377e-05   a 1.98788316600071 0.00011703 au q 1.104934708077949 6.6498e-06 au i .8334507980513295 4.2941e-05 deg node 258.353665478175 0.00035946 deg peri 277.337925372726 0.00029538 deg M 328.8662861421 0.002706 deg tp 2459289.034622467717 (2021-Mar-15.53462247) 0.00013138 TDB period 1023.728304109493 2.80 0.090399 0.0002475 d yr n .3516558041375556 3.1053e-05 deg/d Q 2.87083162392347 0.000169 au   Orbit Determination Parameters    # obs. used (total)      47      data-arc span      67 days      first obs. used      2021-02-07      last obs. used      2021-04-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      5      norm. resid. RMS      .39246      source      ORB      producer      Otto Matic      solution date      2021-Apr-16 06:26:27   Additional Information  Earth MOID = .110158 au   Jupiter MOID = 2.09648 au   T_jup = 3.725  [ 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 25.04   .32648 E2021-DA1 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-21 20:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin