+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 CN3) Classification: Apollo [NEO]          SPK-ID: 54111250 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07997369286128914 0.00011019   a 1.039704454044219 6.7472e-05 au q .9565554493699723 5.2554e-05 au i 3.313220776141367 0.0038501 deg node 334.4481587418159 0.0017343 deg peri 256.6372139977584 0.0051679 deg M 230.321316449242 0.013336 deg tp 2459339.985600315705 (2021-May-05.48560032) 0.00131 TDB period 387.2249065051552 1.06 0.037693 0.0001032 d yr n .9296922639845929 9.0499e-05 deg/d Q 1.122853458718466 7.2868e-05 au   Orbit Determination Parameters    # obs. used (total)      33      data-arc span      19 days      first obs. used      2021-02-07      last obs. used      2021-02-26      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      6      norm. resid. RMS      .47744      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:25:04   Additional Information  Earth MOID = .0133427 au   Jupiter MOID = 3.84823 au   T_jup = 5.894  [ 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 26.30   .38869 E2021-DA1 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-22 12:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin