+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2017 SL16) Classification: Aten [NEO]          SPK-ID: 3781897 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .15252289888542 6.1667e-07   a .9995722933834724 6.6437e-09 au q .8471146295510776 6.1382e-07 au i 8.733421966044473 2.4379e-05 deg node 182.479621619044 6.0588e-06 deg peri 70.10172220265628 2.0981e-05 deg M 337.6089890043363 7.322e-05 deg tp 2459023.203402245455 (2020-Jun-22.70340225) 7.4308e-05 TDB period 365.0225891964654 1.00 3.6392e-06 9.964e-09 d yr n .98624033321466 9.8327e-09 deg/d Q 1.152029957215867 7.657e-09 au   Orbit Determination Parameters    # obs. used (total)      69      # delay obs. used      0      # Doppler obs. used      1      data-arc span      1095 days (3.00 yr)      first obs. used      2017-09-24      last obs. used      2020-09-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47696      source      ORB      producer      Otto Matic      solution date      2020-Sep-23 07:09:20   Additional Information  Earth MOID = .0183782 au   Jupiter MOID = 3.85983 au   T_jup = 6.062  [ 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 25.8   n/a MPO423870   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2020-Oct-21 02:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin