+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2021 BJ3) Classification: Aten [NEO]          SPK-ID: 54107791 [ 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 6 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5209756601344679 0.00045051   a .6670436123999132 0.00017549 au q .3195301260913883 0.00038458 au i 9.687568272972433 0.015108 deg node 312.675221536412 0.0011173 deg peri 352.9147679255688 0.0015647 deg M 112.9034022090258 0.02085 deg tp 2459138.092857182181 (2020-Oct-15.59285718) 0.036153 TDB period 198.98932162222 0.54 0.078527 0.000215 d yr n 1.809142305050207 0.00071394 deg/d Q 1.014557098708438 0.00026692 au   Orbit Determination Parameters    # obs. used (total)      111      data-arc span      23 days      first obs. used      2021-01-15      last obs. used      2021-02-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .36765      source      ORB      producer      Otto Matic      solution date      2021-Feb-15 06:48:42   Additional Information  Earth MOID = .014219 au   Jupiter MOID = 4.2288 au   T_jup = 8.403  [ 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 25.1   .41574 E2021-CX0 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-15 12:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin