+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118415 (1999 SV19) Classification: Main-belt Asteroid          SPK-ID: 2118415 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .224146929618887 4.6236e-08   a 3.127608571702377 2.5245e-08 au q 2.426564713305576 1.5491e-07 au i 11.53062270149976 4.0468e-06 deg node 149.9373697943595 2.9901e-05 deg peri 191.3271720936137 3.2641e-05 deg M 313.9379187401183 1.6861e-05 deg tp 2459458.998528557343 (2021-Sep-01.49852856) 9.6642e-05 TDB period 2020.305373428595 5.53 2.4461e-05 6.697e-08 d yr n .1781908837816214 2.1574e-09 deg/d Q 3.828652430099177 3.0903e-08 au   Orbit Determination Parameters    # obs. used (total)      661      data-arc span      8091 days (22.15 yr)      first obs. used      1998-05-23      last obs. used      2020-07-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55506      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 18:11:42   Additional Information  Earth MOID = 1.41722 au   Jupiter MOID = 1.58119 au   T_jup = 3.144  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.55   n/a E2021B55   diameter diameter 8.723 km 0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.041   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   118415 (1999 SV19)          Discovered 1999-Sep-30 by LINEAR at Socorro Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ show close-approach data ] Alternate Designations  1999 SV19 = 1999 RO221  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 05:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin