+ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1818006643056651 6.7387e-08   a 3.177882844996544 3.1463e-08 au q 2.600141632690595 2.1054e-07 au i 15.00222860676571 8.6287e-06 deg node 347.1123089522408 2.4043e-05 deg peri 69.84847852881552 3.2356e-05 deg M 216.7713291266231 2.0573e-05 deg tp 2459823.751843256349 (2022-Sep-01.25184326) 0.00012247 TDB period 2069.21325014805 5.67 3.073e-05 8.413e-08 d yr n .1739791681569033 2.5837e-09 deg/d Q 3.755624057302493 3.7183e-08 au   Orbit Determination Parameters    # obs. used (total)      443      data-arc span      9420 days (25.79 yr)      first obs. used      1993-08-15      last obs. used      2019-05-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58803      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:42:24   Additional Information  Earth MOID = 1.65594 au   Jupiter MOID = 1.91989 au   T_jup = 3.122  [ hide covariance matrix ] Orbital Elements at Epoch 2456976.5 (2014-Nov-15.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1848384134934762 6.6961e-08   q 2.58656818985735 2.0836e-07 au tp 2457757.985099694557 (2017-Jan-04.48509969) 0.00011243 TDB node 347.2376405306126 2.4035e-05 deg peri 69.86119682902165 3.2059e-05 deg i 15.01378793948976 8.6367e-06 deg   Orbit Determination Parameters    # obs. used (total)      443      data-arc span      9420 days (25.79 yr)      first obs. used      1993-08-15      last obs. used      2019-05-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58803      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:42:24   Additional Information  Jupiter MOID = 1.91989 au   T_jup = 3.122  Orbit Covariance (6×6)   e q tp node peri i e 4.483756180899145E-15 -1.384466530397434E-14 -3.251067066322705E-12 1.471975262517678E-14 -7.266625057335441E-13 -4.37157230012998E-15 q -1.384466530397434E-14 4.341298187845215E-14 1.058190883628554E-11 -5.027850571628732E-14 2.285343244791355E-12 1.343742593963224E-14 tp -3.251067066322705E-12 1.058190883628554E-11 1.264057084805342E-8 -1.699259116548181E-11 2.404522473634493E-9 3.994256858617622E-12 node 1.471975262517678E-14 -5.027850571628732E-14 -1.699259116548181E-11 5.776975974961375E-10 -5.611364995573258E-10 7.053920205096212E-11 peri -7.266625057335441E-13 2.285343244791355E-12 2.404522473634493E-9 -5.611364995573258E-10 1.027789690570871E-9 -6.7420481130895E-11 i -4.37157230012998E-15 1.343742593963224E-14 3.994256858617622E-12 7.053920205096212E-11 -6.7420481130895E-11 7.459247118042669E-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 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 ] 2021-Feb-27 23:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin