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85437 (1997 EX31)
Classification: Main-belt Asteroid          SPK-ID: 2085437
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1687138542805834 4.592e-08  
a 2.27593305148917 1.1442e-08 au
q 1.891951614287863 1.0792e-07 au
i 7.623211215205347 5.2203e-06 deg
node 182.9027172284734 2.6999e-05 deg
peri 17.78956933519724 3.0887e-05 deg
M 142.323117590343 1.9064e-05 deg
tp 2458104.695346463559
(2017-Dec-17.19534646)
6.3575e-05 TDB
period 1254.115833710698
3.43
9.4575e-06
2.589e-08
d
yr
n .2870548240626436 2.1647e-09 deg/d
Q 2.659914488690478 1.3373e-08 au
  Orbit Determination Parameters
   # obs. used (total)      439  
   data-arc span      8799 days (24.09 yr)  
   first obs. used      1995-10-26  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56775  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:16:15  

Additional Information
 Earth MOID = .891751 au 
 Jupiter MOID = 2.29779 au 
 T_jup = 3.578 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457016.5 (2014-Dec-25.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1683208259742965 4.5985e-08  
q 1.893185405972911 1.0805e-07 au
tp 2456850.202677515623
(2014-Jul-11.70267752)
5.7018e-05 TDB
node 182.9191720214394 2.6992e-05 deg
peri 17.80885362421446 3.0895e-05 deg
i 7.62315052682889 5.2208e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      439  
   data-arc span      8799 days (24.09 yr)  
   first obs. used      1995-10-26  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56775  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 08:16:15  

Additional Information
 Jupiter MOID = 2.29779 au 
 T_jup = 3.578 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.114595783068964E-15 -4.95113095070855E-15 -1.040119653485836E-12 -1.711830622507786E-15 -2.690661443013548E-13 -8.332304960006343E-16
q -4.95113095070855E-15 1.167402461665267E-14 2.728126635247206E-12 4.331008636515177E-15 7.055677927468413E-13 2.078425959913356E-15
tp -1.040119653485836E-12 2.728126635247206E-12 3.251108515926114E-9 2.993764905542837E-12 8.655694103959791E-10 5.127421618776959E-13
node -1.711830622507786E-15 4.331008636515177E-15 2.993764905542837E-12 7.285752858513452E-10 -7.208118324118832E-10 -3.104757360394132E-12
peri -2.690661443013548E-13 7.055677927468413E-13 8.655694103959791E-10 -7.208118324118832E-10 9.545299210680706E-10 3.207404801972608E-12
i -8.332304960006343E-16 2.078425959913356E-15 5.127421618776959E-13 -3.104757360394132E-12 3.207404801972608E-12 2.725684646831864E-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 16.4   n/a MPO453284  

85437 (1997 EX31)          Discovered 1997-Mar-11 by Spacewatch at Kitt Peak
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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