+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2019 SF9) Classification: Apollo [NEO]          SPK-ID: 3873150 [ 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 6 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09525071827978056 0.00018413   a 1.056118505519138 0.00031827 au q .9555224592798716 9.3563e-05 au i 27.245222152696 0.025888 deg node 4.898898337187227 0.00018269 deg peri 65.62556515429628 0.12571 deg M 348.6240965416002 0.049739 deg tp 2459213.027107450937 (2020-Dec-29.52710745) 0.060434 TDB period 396.4308152604174 1.09 0.1792 0.0004906 d yr n .9081029681396342 0.0004105 deg/d Q 1.156714551758404 0.00034859 au   Orbit Determination Parameters    # obs. used (total)      91      data-arc span      4 days      first obs. used      2019-09-30      last obs. used      2019-10-04      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      7      norm. resid. RMS      .2832      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 21:45:14   Additional Information  Earth MOID = .00397032 au   Jupiter MOID = 3.94181 au   T_jup = 5.724  [ 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   .35947 E2019V77 autocmod 2.8 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-18 07:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin