+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2019 YB4) Classification: Aten [NEO]          SPK-ID: 3959223 [ 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 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1924848850445866 0.00022141   a .9959639339572115 5.8073e-05 au q .8042559306209034 0.00017412 au i .5363687020272501 0.00027798 deg node 324.8517789130016 0.038128 deg peri 235.7197177458818 0.038081 deg M 269.7087546158235 0.0052476 deg tp 2459291.555668529634 (2021-Mar-18.05566853) 0.013175 TDB period 363.0478296228353 0.99 0.031753 8.693e-05 d yr n .9916048813017238 8.6728e-05 deg/d Q 1.18767193729352 6.9251e-05 au   Orbit Determination Parameters    # obs. used (total)      37      data-arc span      4 days      first obs. used      2019-12-29      last obs. used      2020-01-02      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      6      norm. resid. RMS      .40718      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 22:11:14   Additional Information  Earth MOID = .00281693 au   Jupiter MOID = 3.76772 au   T_jup = 6.083  [ 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 26.8   .42777 E2020A27 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jun-23 03:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin