+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2019 YL4) Classification: Aten [NEO]          SPK-ID: 3959231 [ 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 10 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1695424114119212 7.6576e-07   a .9716757805195125 1.2725e-07 au q .8069355255796737 8.4828e-07 au i 8.104265774606914 2.6729e-05 deg node 107.7952607131252 2.2865e-05 deg peri 176.3480704190011 7.0159e-05 deg M 178.8757063616262 7.6065e-05 deg tp 2459026.668148998597 (2020-Jun-26.16814900) 6.914e-05 TDB period 349.8488846439029 0.96 6.8724e-05 1.882e-07 d yr n 1.029015714503219 2.0214e-07 deg/d Q 1.136416035459352 1.4882e-07 au   Orbit Determination Parameters    # obs. used (total)      52      data-arc span      776 days (2.12 yr)      first obs. used      2019-01-10      last obs. used      2021-02-24      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      2      norm. resid. RMS      .59115      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 22:11:17   Additional Information  Earth MOID = .124749 au   Jupiter MOID = 3.9503 au   T_jup = 6.198  [ 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 24.4   .59623 E2020A86 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-18 07:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin