+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118981 (2000 XS13) Classification: Inner Main-belt Asteroid          SPK-ID: 2118981 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ 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 .08929696836993453 6.6026e-08   a 1.926356113366654 1.0469e-08 au q 1.754338352442122 1.275e-07 au i 23.4228322670572 5.3916e-06 deg node 63.15235572136399 1.8133e-05 deg peri 265.6070726621254 5.1106e-05 deg M 287.9146991756338 5.7547e-05 deg tp 2459396.045355179289 (2021-Jun-30.54535518) 0.00015701 TDB period 976.5698007706544 2.67 7.9609e-06 2.18e-08 d yr n .368637244071963 3.0051e-09 deg/d Q 2.098373874291186 1.1404e-08 au   Orbit Determination Parameters    # obs. used (total)      514      data-arc span      8207 days (22.47 yr)      first obs. used      1997-11-26      last obs. used      2020-05-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52683      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 18:07:37   Additional Information  Earth MOID = .845069 au   Jupiter MOID = 3.10954 au   T_jup = 3.813  [ 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 16.34   n/a E2021B55   118981 (2000 XS13)          Discovered 2000-Dec-04 by LINEAR at Socorro Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-10 20:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin