+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 CO) Classification: Apollo [NEO]          SPK-ID: 54110051 [ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3606324237304885 0.00016583   a 1.113008473202542 0.00013987 au q .7116215298789386 9.5147e-05 au i 4.999127185275325 0.0023128 deg node 321.7687472168197 4.4594e-05 deg peri 274.0695127845471 0.00043634 deg M 260.2949171584565 0.026832 deg tp 2459319.284816369800 (2021-Apr-14.78481637) 0.0095748 TDB period 428.8902097507765 1.17 0.080848 0.0002213 d yr n .8393756532917647 0.00015823 deg/d Q 1.514395416526145 0.00019031 au   Orbit Determination Parameters    # obs. used (total)      86      data-arc span      6 days      first obs. used      2021-02-05      last obs. used      2021-02-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      6      norm. resid. RMS      .26157      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 23:24:48   Additional Information  Earth MOID = .00148021 au   Jupiter MOID = 3.49773 au   T_jup = 5.535  [ 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 25.3   .34709 E2021-CX0 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-22 17:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin