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118166 (1981 EG22)
Classification: Main-belt Asteroid          SPK-ID: 2118166
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1981095273691636 5.4566e-08  
a 2.432040921109257 1.097e-08 au
q 1.950230443685837 1.3326e-07 au
i 9.895352466359974 6.8395e-06 deg
node 349.2182390274215 2.4793e-05 deg
peri 225.6928006718529 2.9119e-05 deg
M 93.31359400256274 1.3857e-05 deg
tp 2458641.415085913404
(2019-Jun-06.91508591)
5.3263e-05 TDB
period 1385.334799853751
3.79
9.3728e-06
2.566e-08
d
yr
n .2598649799586388 1.7582e-09 deg/d
Q 2.913851398532677 1.3143e-08 au
  Orbit Determination Parameters
   # obs. used (total)      483  
   data-arc span      14416 days (39.47 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-07-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55575  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:02:05  

Additional Information
 Earth MOID = .959381 au 
 Jupiter MOID = 2.10745 au 
 T_jup = 3.460 
[ 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 MPO432685  

118166 (1981 EG22)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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Alternate Designations
 1981 EG22 = 2000 EA58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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