+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   85524 (1997 WZ8) Classification: Main-belt Asteroid          SPK-ID: 2085524 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07528434265238682 5.9477e-08   a 2.568395469925419 1.3832e-08 au q 2.375035505300716 1.5804e-07 au i 3.492402694374278 3.935e-06 deg node 263.8820765448226 9.6758e-05 deg peri 88.81130854966059 0.00010084 deg M 208.6949008562587 3.0433e-05 deg tp 2459632.391238127818 (2022-Feb-21.89123813) 0.00012975 TDB period 1503.457894105113 4.12 1.2145e-05 3.325e-08 d yr n .2394480094264821 1.9343e-09 deg/d Q 2.761755434550123 1.4873e-08 au   Orbit Determination Parameters    # obs. used (total)      696      data-arc span      8215 days (22.49 yr)      first obs. used      1997-10-30      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56895      source      ORB      producer      Otto Matic      solution date      2020-May-20 15:37:21   Additional Information  Earth MOID = 1.37252 au   Jupiter MOID = 2.54816 au   T_jup = 3.424  [ hide covariance matrix ] Orbital Elements at Epoch 2456637.5 (2013-Dec-11.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07402648172017083 5.9477e-08   q 2.378647982779381 1.5801e-07 au tp 2456618.704307567661 (2013-Nov-22.20430757) 0.00012016 TDB node 264.0665060676591 9.6627e-05 deg peri 87.37362055597906 0.00010082 deg i 3.494489432830145 3.9392e-06 deg   Orbit Determination Parameters    # obs. used (total)      696      data-arc span      8215 days (22.49 yr)      first obs. used      1997-10-30      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56895      source      ORB      producer      Otto Matic      solution date      2020-May-20 15:37:21   Additional Information  Jupiter MOID = 2.54816 au   T_jup = 3.424  Orbit Covariance (6×6)   e q tp node peri i e 3.537565107202252E-15 -9.371475180059674E-15 -1.998447417842108E-12 6.864617523755855E-14 -4.813214419891178E-13 -1.384713730259283E-15 q -9.371475180059674E-15 2.496752584597103E-14 5.727843420276668E-12 -1.839797538318075E-13 1.379269364096447E-12 3.962709334154299E-15 tp -1.998447417842108E-12 5.727843420276668E-12 1.443762831000406E-8 -5.076519818951577E-11 3.513587898621804E-9 4.090671142638008E-12 node 6.864617523755855E-14 -1.839797538318075E-13 -5.076519818951577E-11 9.336686599887029E-9 -9.329655282213464E-9 6.087838985588658E-11 peri -4.813214419891178E-13 1.379269364096447E-12 3.513587898621804E-9 -9.329655282213464E-9 1.016555568109707E-8 -5.980984045815938E-11 i -1.384713730259283E-15 3.962709334154299E-15 4.090671142638008E-12 6.087838985588658E-11 -5.980984045815938E-11 1.551702946701383E-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 15.6   n/a MPO280331   85524 (1997 WZ8)          Discovered 1997-Nov-21 by Spacewatch at Kitt Peak Reference: 20040830/Numbers.arc Last Updated: 2004-09-06 [ show close-approach data ] Alternate Designations  1997 WZ8 = 1999 CQ80  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-28 04:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin