+ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07528434264144647 5.9477e-08   a 2.568395469575689 1.376e-08 au q 2.375035505005414 1.5804e-07 au i 3.492402305331548 3.8677e-06 deg node 263.8820701643932 9.6027e-05 deg peri 88.81131582968105 0.00010006 deg M 208.6949001879056 3.028e-05 deg tp 2459632.391240789979 (2022-Feb-21.89124079) 0.00012917 TDB period 1503.457893798031 4.12 1.2082e-05 3.308e-08 d yr n .2394480094753895 1.9243e-09 deg/d Q 2.761755434145964 1.4796e-08 au   Orbit Determination Parameters    # obs. used (total)      700      data-arc span      8235 days (22.55 yr)      first obs. used      1997-10-30      last obs. used      2020-05-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56775      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:00:42   Additional Information  Earth MOID = 1.37252 au   Jupiter MOID = 2.54816 au   T_jup = 3.424  [ hide covariance matrix ] Orbital Elements at Epoch 2456705.5 (2014-Feb-17.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07395556273535062 5.9484e-08   q 2.378648441754941 1.5801e-07 au tp 2456618.686454922900 (2013-Nov-22.18645492) 0.0001193 TDB node 264.0653147385844 9.59e-05 deg peri 87.37032212105146 0.00010006 deg i 3.494507779037467 3.8716e-06 deg   Orbit Determination Parameters    # obs. used (total)      700      data-arc span      8235 days (22.55 yr)      first obs. used      1997-10-30      last obs. used      2020-05-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56775      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:00:42   Additional Information  Jupiter MOID = 2.54816 au   T_jup = 3.424  Orbit Covariance (6×6)   e q tp node peri i e 3.538299122882452E-15 -9.372762824190568E-15 -1.993218405245111E-12 6.980578890267371E-14 -4.810059573435017E-13 -1.313389376805041E-15 q -9.372762824190568E-15 2.496738191190552E-14 5.732073471405492E-12 -1.870839815204133E-13 1.383574752107252E-12 3.774827449038998E-15 tp -1.993218405245111E-12 5.732073471405492E-12 1.423281912875956E-8 -5.292809251563272E-11 3.45877363719842E-9 3.953443449899959E-12 node 6.980578890267371E-14 -1.870839815204133E-13 -5.292809251563272E-11 9.196749900501777E-9 -9.190506776700221E-9 5.225803178730121E-11 peri -4.810059573435017E-13 1.383574752107252E-12 3.45877363719842E-9 -9.190506776700221E-9 1.001135008468295E-8 -5.123920799940958E-11 i -1.313389376805041E-15 3.774827449038998E-15 3.953443449899959E-12 5.225803178730121E-11 -5.123920799940958E-11 1.498912712536815E-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 ] 2021-Jan-22 07:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin