+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2001 CA21) Classification: Apollo [NEO, PHA]          SPK-ID: 3092289 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2451943.5 (2001-Feb-03.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .7753789280052502 0.054687   a 1.663866162461334 0.3421 au q .3737394010678554 0.014168 au i 4.95654724000439 0.30309 deg node 46.64215596556536 5.118 deg peri 218.6393108200826 5.8073 deg M 336.2883463387281 8.4113 deg tp 2451995.133950443981 (2001-Mar-26.63395044) 2.3921 TDB period 783.927701769413 2.15 241.77 0.6619 d yr n .4592260219755463 0.14163 deg/d Q 2.953992923854813 0.60735 au   Orbit Determination Parameters    # obs. used (total)      13      data-arc span      2 days      first obs. used      2001-02-02      last obs. used      2001-02-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      9      norm. resid. RMS      .90046      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 09:16:32   Additional Information  Earth MOID = .0374655 au   Jupiter MOID = 2.15795 au   T_jup = 3.839  [ 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 18.775   .46008 12 autocmod 2.6i [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-18 17:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin