+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 3 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1922951475500625 0.00022099   a .9961562394686857 5.7895e-05 au q .8046002284171394 0.00017389 au i .5362391852225672 0.00027699 deg node 324.9071884080477 0.038449 deg peri 235.6584223770793 0.038334 deg M 71.41892157694464 0.012094 deg tp 2458928.455571027994 (2020-Mar-19.95557103) 0.018461 TDB period 363.1529832325946 0.99 0.031659 8.668e-05 d yr n .9913177548356384 8.6421e-05 deg/d Q 1.187712250520232 6.9028e-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.      DE431      SB-pert. ephem.      SB431-N16      condition code      6      norm. resid. RMS      .40601      source      ORB      producer      Otto Matic      solution date      2020-Jan-02 06:17:03   Additional Information  Earth MOID = .00293673 au   Jupiter MOID = 3.76879 au   T_jup = 6.082  [ 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-Jan-28 13:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin