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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1684096987479675 4.5858e-08  
a 2.276494649332806 1.1447e-08 au
q 1.893110871237308 1.0783e-07 au
i 7.621928996645587 5.172e-06 deg
node 182.8957334066526 2.6722e-05 deg
peri 17.77852084835798 3.0618e-05 deg
M 257.1374532665136 1.9735e-05 deg
tp 2459358.970275455314
(2021-May-24.47027546)
7.0937e-05 TDB
period 1254.580051359955
3.43
9.4625e-06
2.591e-08
d
yr
n .2869486085082915 2.1643e-09 deg/d
Q 2.659878427428303 1.3375e-08 au
  Orbit Determination Parameters
   # obs. used (total)      442  
   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      .57025  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 08:02:19  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1909-Feb-10 03:06 < 00:01 Juno 0.0459089535716636 0.0459006918904089 0.0459172170384358 8.01007683505185 8.01007680196832 2418347.628867037 0.177284933752366 613.020279564753 44.10047483513 47.9445855943278 115843.5798036 T 20 CATAB v2.0f-lin.ifort 2019-Dec-14 08:02:21 2019-Dec-14 08:02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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