+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (1999 TO13) Classification: Apollo [NEO, PHA]          SPK-ID: 3022972 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2451466.5 (1999-Oct-15.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4358096615893589 0.0016428   a 1.582958276870673 0.0043366 au q .8930897659175904 0.00015403 au i 20.24694982703312 0.050806 deg node 15.13623890202841 0.0011653 deg peri 302.2273700530747 0.029195 deg M 25.96738456946986 0.1327 deg tp 2451414.027913009454 (1999-Aug-23.52791301) 0.052527 TDB period 727.4491301217022 1.99 2.9893 0.008184 d yr n .4948799649258939 0.0020336 deg/d Q 2.272826787823756 0.0062265 au   Orbit Determination Parameters    # obs. used (total)      98      data-arc span      11 days      first obs. used      1999-10-12      last obs. used      1999-10-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      8      norm. resid. RMS      .36954      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 09:17:17   Additional Information  Earth MOID = .0306659 au   Jupiter MOID = 3.21685 au   T_jup = 4.219  [ 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 21.4   n/a MPO343405   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-18 17:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin