+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102937 (1999 XS46) Classification: Main-belt Asteroid          SPK-ID: 2102937 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1440030077850678 3.8527e-08   a 2.388649055155776 1.1289e-08 au q 2.044676406670384 9.3585e-08 au i 5.751321334426992 4.4718e-06 deg node 71.38749649993312 4.5209e-05 deg peri 344.599503896129 4.8255e-05 deg M 204.643957332351 1.84e-05 deg tp 2459582.405680531257 (2022-Jan-02.90568053) 7.1271e-05 TDB period 1348.42547089979 3.69 9.5593e-06 2.617e-08 d yr n .2669780479300616 1.8927e-09 deg/d Q 2.732621703641168 1.2915e-08 au   Orbit Determination Parameters    # obs. used (total)      538      data-arc span      7398 days (20.25 yr)      first obs. used      1999-11-04      last obs. used      2020-02-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52576      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:51:42   Additional Information  Earth MOID = 1.05729 au   Jupiter MOID = 2.59482 au   T_jup = 3.513  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.43   n/a E2021B55   102937 (1999 XS46)          Discovered 1999-Dec-07 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-01 10:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin