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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1684096946575278 4.5854e-08  
a 2.276494649440053 1.1446e-08 au
q 1.893110880638358 1.0783e-07 au
i 7.621927419882025 5.1699e-06 deg
node 182.8957444575705 2.6704e-05 deg
peri 17.7785006051651 3.06e-05 deg
M 257.1374663344359 1.9733e-05 deg
tp 2459358.970229939661
(2021-May-24.47022994)
7.0931e-05 TDB
period 1254.580051448611
3.43
9.4621e-06
2.591e-08
d
yr
n .286948608488014 2.1642e-09 deg/d
Q 2.659878418241748 1.3374e-08 au
  Orbit Determination Parameters
   # obs. used (total)      450  
   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      .5669  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:00:59  

Additional Information
 Earth MOID = .892588 au 
 Jupiter MOID = 2.2967 au 
 T_jup = 3.578 
[ show covariance matrix ]

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 16.3   n/a MPO502665  

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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