+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2020 HB11) Classification: Centaur          SPK-ID: 54017270 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 2 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .7081566380952619 0.00091051   a 16.57827382182716 0.053916 au q 4.83825916673935 0.00066111 au i 147.297215915841 0.00058024 deg node 290.147725664494 0.0035138 deg peri 104.5458585482636 0.039444 deg M 1.684104277977435 0.004472 deg tp 2459085.161614469971 (2020-Aug-23.66161447) 0.3502 TDB period 24655.13527504197 67.50 120.28 0.3293 d yr n .01460142059591223 7.123e-05 deg/d Q 28.31828847691497 0.092097 au   Orbit Determination Parameters    # obs. used (total)      74      data-arc span      37 days      first obs. used      2020-04-18      last obs. used      2020-05-25      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      6      norm. resid. RMS      .43786      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 22:25:56   Additional Information  Earth MOID = 4.0197 au   Jupiter MOID = 1.11884 au   T_jup = -1.807  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.99   .4606 MPO545532 autocmod 2.8 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] 2021-Apr-22 12:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin