+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101011 (1998 QS49) Classification: Main-belt Asteroid          SPK-ID: 2101011 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1874334285871929 8.4235e-08   a 2.471981559277407 1.6988e-08 au q 2.008649580217728 1.9881e-07 au i 2.934948122701145 5.2631e-06 deg node 57.1481523783737 7.9602e-05 deg peri 288.6702612990605 8.3547e-05 deg M 260.8986548081497 3.5671e-05 deg tp 2459591.289886361111 (2022-Jan-11.78988636) 0.0001443 TDB period 1419.600902668364 3.89 1.4634e-05 4.007e-08 d yr n .2535924000353362 2.6141e-09 deg/d Q 2.935313538337086 2.0172e-08 au   Orbit Determination Parameters    # obs. used (total)      713      data-arc span      9920 days (27.16 yr)      first obs. used      1993-03-19      last obs. used      2020-05-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55266      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:34:47   Additional Information  Earth MOID = 1.00211 au   Jupiter MOID = 2.4809 au   T_jup = 3.457  [ 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 15.75   n/a E2021B55   101011 (1998 QS49)          Discovered 1998-Aug-17 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-Apr-21 15:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin