+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (1998 SL36) Classification: Apollo [NEO, PHA]          SPK-ID: 3014117 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4184190525281145 5.5058e-08   a 1.390891963761862 1.516e-08 au q .8089162661156551 8.0696e-08 au i 19.05305066583003 2.7446e-05 deg node 353.11448873 1.9702e-05 deg peri 116.766869008472 2.1081e-05 deg M 11.91407803342729 1.0833e-05 deg tp 2458980.671198592041 (2020-May-11.17119859) 1.7712e-05 TDB period 599.1540836678425 1.64 9.7958e-06 2.682e-08 d yr n .6008471106400334 9.8235e-09 deg/d Q 1.972867661408069 2.1503e-08 au   Orbit Determination Parameters    # obs. used (total)      105      # delay obs. used      2      # Doppler obs. used      1      data-arc span      6760 days (18.51 yr)      first obs. used      1998-09-24      last obs. used      2017-03-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40692      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 09:17:40   Additional Information  Earth MOID = .0212288 au   Jupiter MOID = 3.24513 au   T_jup = 4.629  [ 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 20.3   n/a E2017F13   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-26 18:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin