+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1872853600778032 8.4185e-08   a 2.472233802588446 1.714e-08 au q 2.009220604674153 1.9858e-07 au i 2.93479938788443 5.2635e-06 deg node 57.15019277041209 7.9647e-05 deg peri 288.6571014146293 8.3593e-05 deg M 210.1853576867521 3.521e-05 deg tp 2459591.359874809843 (2022-Jan-11.85987481) 0.0001444 TDB period 1419.818194317671 3.89 1.4765e-05 4.042e-08 d yr n .2535535897770397 2.6368e-09 deg/d Q 2.93524700050274 2.035e-08 au   Orbit Determination Parameters    # obs. used (total)      711      data-arc span      9920 days (27.16 yr)      first obs. used      1993-03-19      last obs. used      2020-05-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55344      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:02:57   Additional Information  Earth MOID = 1.00448 au   Jupiter MOID = 2.48045 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 15.8   n/a MPO469017   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 ] 2020-Dec-06 03:00 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin