+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   90749 (1993 QZ7) Classification: Main-belt Asteroid          SPK-ID: 2090749 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1818006357373245 7.5759e-08   a 3.177882848043275 3.3579e-08 au q 2.600141725970269 2.3905e-07 au i 15.00223382653839 1.0058e-05 deg node 347.1122765068346 2.785e-05 deg peri 69.84851758111773 3.8886e-05 deg M 216.771320015675 2.3412e-05 deg tp 2459823.751896808304 (2022-Sep-01.25189681) 0.00013715 TDB period 2069.213253123774 5.67 3.2797e-05 8.979e-08 d yr n .1739791679067048 2.7575e-09 deg/d Q 3.755623970116282 3.9684e-08 au   Orbit Determination Parameters    # obs. used (total)      403      data-arc span      8960 days (24.53 yr)      first obs. used      1993-08-15      last obs. used      2018-02-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59152      source      ORB      producer      Otto Matic      solution date      2018-Mar-05 23:21:44   Additional Information  Earth MOID = 1.65594 au   Jupiter MOID = 1.91989 au   T_jup = 3.122  [ hide covariance matrix ] Orbital Elements at Epoch 2456394.5 (2013-Apr-12.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1854633173961622 7.5446e-08   q 2.583085514515413 2.3734e-07 au tp 2455693.767217943300 (2011-May-12.26721794) 0.00013697 TDB node 347.2655004084362 2.7838e-05 deg peri 69.75996526693798 3.8409e-05 deg i 15.01761718640564 1.0071e-05 deg   Orbit Determination Parameters    # obs. used (total)      403      data-arc span      8960 days (24.53 yr)      first obs. used      1993-08-15      last obs. used      2018-02-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59152      source      ORB      producer      Otto Matic      solution date      2018-Mar-05 23:21:44   Additional Information  Jupiter MOID = 1.91989 au   T_jup = 3.122  Orbit Covariance (6×6)   e q tp node peri i e 5.692108691217326E-15 -1.777684678966255E-14 -4.795445111029691E-12 3.78212401072353E-14 -9.335572039779577E-13 -1.979805339297324E-14 q -1.777684678966255E-14 5.632941328526667E-14 1.398132045619142E-11 -1.220776471606768E-13 2.792734945730999E-12 6.143106698123493E-14 tp -4.795445111029691E-12 1.398132045619142E-11 1.876090284203968E-8 -4.594917618477644E-11 3.659785517726397E-9 2.713544690956324E-11 node 3.78212401072353E-14 -1.220776471606768E-13 -4.594917618477644E-11 7.749749760950976E-10 -7.579881810234165E-10 9.367917789245063E-11 peri -9.335572039779577E-13 2.792734945730999E-12 3.659785517726397E-9 -7.579881810234165E-10 1.475277464728716E-9 -8.546256495807747E-11 i -1.979805339297324E-14 6.143106698123493E-14 2.713544690956324E-11 9.367917789245063E-11 -8.546256495807747E-11 1.014174030116156E-10 [ 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 14.8   n/a MPO344925   90749 (1993 QZ7)          Discovered 1993-Aug-20 by Elst, E. W. at La Silla Reference: 20041028/Numbers.arc Last Updated: 2004-10-29 [ show close-approach data ] Alternate Designations  1993 QZ7 = 1999 TW187  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-20 23:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin