+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   212490 (2006 QL117) Classification: Outer Main-belt Asteroid          SPK-ID: 2212490 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .255084450850574 5.2835e-08   a 3.969444949843818 6.9108e-08 au q 2.956901264631323 2.2123e-07 au i 1.732936869404445 5.2418e-06 deg node 271.9538421499112 0.00020602 deg peri 106.4821729007065 0.00020643 deg M 250.2357540371441 1.5405e-05 deg tp 2459881.247662814633 (2022-Oct-28.74766281) 0.00014326 TDB period 2888.63787868195 7.91 7.5437e-05 2.065e-07 d yr n .1246262131563073 3.2546e-09 deg/d Q 4.981988635056313 8.6736e-08 au   Orbit Determination Parameters    # obs. used (total)      266      data-arc span      7995 days (21.89 yr)      first obs. used      1998-08-24      last obs. used      2020-07-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5742      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 04:00:39   Additional Information  Earth MOID = 1.95974 au   Jupiter MOID = .548513 au   T_jup = 2.999  [ hide covariance matrix ] Orbital Elements at Epoch 2457431.5 (2016-Feb-13.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2579774966645901 5.2628e-08   q 2.937663028762742 2.1889e-07 au tp 2457002.345845794350 (2014-Dec-10.84584579) 8.629e-05 TDB node 272.0949361193776 0.00020628 deg peri 106.5934055649785 0.00020667 deg i 1.733965169370266 5.2428e-06 deg   Orbit Determination Parameters    # obs. used (total)      266      data-arc span      7995 days (21.89 yr)      first obs. used      1998-08-24      last obs. used      2020-07-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5742      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 04:00:39   Additional Information  Jupiter MOID = .548513 au   T_jup = 2.999  Orbit Covariance (6×6)   e q tp node peri i e 2.769725565448163E-15 -1.120732968479754E-14 -5.730392656232551E-13 1.124841952634449E-14 -1.001527623571055E-13 -1.88529084363136E-15 q -1.120732968479754E-14 4.791240404424094E-14 4.51512679633853E-12 -3.914494150034297E-14 7.644631809949074E-13 8.569019238655735E-15 tp -5.730392656232551E-13 4.51512679633853E-12 7.445967705839873E-9 2.197571176201789E-11 1.183845488504402E-9 1.828896050214985E-12 node 1.124841952634449E-14 -3.914494150034297E-14 2.197571176201789E-11 4.254954354886182E-8 -4.252613109706219E-8 -1.062040619888151E-10 peri -1.001527623571055E-13 7.644631809949074E-13 1.183845488504402E-9 -4.252613109706219E-8 4.271429093816281E-8 1.064540419192621E-10 i -1.88529084363136E-15 8.569019238655735E-15 1.828896050214985E-12 -1.062040619888151E-10 1.064540419192621E-10 2.748693768237577E-11 [ 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 15.0   n/a MPO440126   212490 (2006 QL117)          Discovered 2006-Aug-27 by LONEOS at Anderson Mesa Reference: 20090409/Numbers.arc Last Updated: 2009-04-10 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 13:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin