+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101462 (1998 WW7) Classification: Main-belt Asteroid          SPK-ID: 2101462 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1868686846737597 5.0837e-08   a 2.363563167075959 9.2815e-09 au q 1.921887226901129 1.1933e-07 au i 3.218542314412813 5.209e-06 deg node 233.3436788456135 7.8738e-05 deg peri 148.9542017308995 7.945e-05 deg M 359.6092787327142 1.0677e-05 deg tp 2459001.940501773109 (2020-Jun-01.44050177) 3.9366e-05 TDB period 1327.239343590904 3.63 7.8179e-06 2.14e-08 d yr n .2712396989573894 1.5977e-09 deg/d Q 2.80523910725079 1.1016e-08 au   Orbit Determination Parameters    # obs. used (total)      571      data-arc span      8003 days (21.91 yr)      first obs. used      1998-11-24      last obs. used      2020-10-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54854      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:00:28   Additional Information  Earth MOID = .926023 au   Jupiter MOID = 2.65556 au   T_jup = 3.524  [ hide covariance matrix ] Orbital Elements at Epoch 2456773.5 (2014-Apr-26.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1884432742365806 5.1061e-08   q 1.918085401157384 1.2013e-07 au tp 2456347.271285206274 (2013-Feb-23.77128521) 3.5392e-05 TDB node 233.3910619300695 7.8729e-05 deg peri 148.8923060991823 7.9419e-05 deg i 3.218491077944529 5.2139e-06 deg   Orbit Determination Parameters    # obs. used (total)      571      data-arc span      8003 days (21.91 yr)      first obs. used      1998-11-24      last obs. used      2020-10-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54854      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:00:28   Additional Information  Jupiter MOID = 2.65556 au   T_jup = 3.524  Orbit Covariance (6×6)   e q tp node peri i e 2.607238330035616E-15 -6.122029877569713E-15 -1.311099117257834E-13 -1.093170190979898E-14 -3.330729416246725E-14 -1.76952007923944E-15 q -6.122029877569713E-15 1.443076483845309E-14 3.078823870158995E-13 2.376236867749192E-14 8.299194624337902E-14 4.221705856209539E-15 tp -1.311099117257834E-13 3.078823870158995E-13 1.252583641904739E-9 -1.264954378667094E-12 3.862313172292974E-10 3.425331931054927E-14 node -1.093170190979898E-14 2.376236867749192E-14 -1.264954378667094E-12 6.198289822219691E-9 -6.188285992224812E-9 -1.552295338044566E-10 peri -3.330729416246725E-14 8.299194624337902E-14 3.862313172292974E-10 -6.188285992224812E-9 6.307339291833571E-9 1.550294028283428E-10 i -1.76952007923944E-15 4.221705856209539E-15 3.425331931054927E-14 -1.552295338044566E-10 1.550294028283428E-10 2.718500035064686E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.2   n/a MPO439695   101462 (1998 WW7)          Discovered 1998-Nov-25 by Griffin, I. P. at Cocoa Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1998 WW7 = 2003 BB50  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 10:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin