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146940 (2002 EY4)
Classification: Main-belt Asteroid          SPK-ID: 2146940
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07021508226295971 4.2234e-08  
a 3.135440984065935 2.6072e-08 au
q 2.91528573743909 1.2937e-07 au
i 1.869835015782533 4.5174e-06 deg
node 153.2222475531527 0.00013826 deg
peri 296.6647331713572 0.00014172 deg
M 175.2043076576966 3.2737e-05 deg
tp 2458013.564769854482
(2017-Sep-17.06476985)
0.00018031 TDB
period 2027.899242902996
5.55
2.5294e-05
6.925e-08
d
yr
n .1775236128027 2.2142e-09 deg/d
Q 3.35559623069278 2.7902e-08 au
  Orbit Determination Parameters
   # obs. used (total)      425  
   data-arc span      7181 days (19.66 yr)  
   first obs. used      1999-09-03  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57253  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 08:40:34  

Additional Information
 Earth MOID = 1.93245 au 
 Jupiter MOID = 1.78074 au 
 T_jup = 3.207 
[ 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 15.6   n/a MPO436738  

146940 (2002 EY4)          Discovered 2002-Mar-10 by Asiago-DLR Asteroid Survey at Cima Ekar
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ show close-approach data ]
Alternate Designations
 2002 EY4 = 1999 RG6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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