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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.arcLast 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 ]
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