+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 GY4) Classification: Aten [NEO]          SPK-ID: 3803762 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .7101161274081429 4.5677e-07   a .9182004623659914 7.8267e-08 au q .2661715058462873 4.2811e-07 au i 17.23691691044616 1.0112e-05 deg node 267.022949596108 0.00016837 deg peri 102.7232496107015 0.00016478 deg M 170.4467128907244 0.00011189 deg tp 2459048.343392386520 (2020-Jul-17.84339239) 8.5128e-05 TDB period 321.3695225438041 0.88 4.109e-05 1.125e-07 d yr n 1.12020579036374 1.4323e-07 deg/d Q 1.570229418885696 1.3385e-07 au   Orbit Determination Parameters    # obs. used (total)      78      data-arc span      766 days (2.10 yr)      first obs. used      2018-04-13      last obs. used      2020-05-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      2      norm. resid. RMS      .5685      source      ORB      producer      Otto Matic      solution date      2020-May-19 07:07:28   Additional Information  Earth MOID = .17622 au   Jupiter MOID = 4.00105 au   T_jup = 6.232  [ 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 19.0   n/a E2018L39   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-04 20:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin