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85439 (1997 EP40)
Classification: Main-belt Asteroid          SPK-ID: 2085439
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08070599593685708 6.5169e-08  
a 2.303886779087756 1.3425e-08 au
q 2.117949302055721 1.4856e-07 au
i 5.164206189277456 5.0602e-06 deg
node 50.2690963051113 7.4669e-05 deg
peri 104.569097626956 8.2373e-05 deg
M 247.3127610506172 3.8798e-05 deg
tp 2459400.318018913860
(2021-Jul-04.81801891)
0.00013992 TDB
period 1277.291804741461
3.50
1.1165e-05
3.057e-08
d
yr
n .281846324123929 2.4636e-09 deg/d
Q 2.489824256119792 1.4509e-08 au
  Orbit Determination Parameters
   # obs. used (total)      359  
   data-arc span      8231 days (22.54 yr)  
   first obs. used      1997-03-13  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52869  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:11:25  

Additional Information
 Earth MOID = 1.13423 au 
 Jupiter MOID = 2.49526 au 
 T_jup = 3.580 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO436373  

85439 (1997 EP40)          Discovered 1997-Mar-13 by Tesi, L., Cattani, G. at San Marcello
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

Alternate Designations
 1997 EP40 = 1999 XP170 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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