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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1982123485929663 5.0771e-08  
a 2.431360299022153 1.023e-08 au
q 1.949434663877275 1.2274e-07 au
i 9.896913160090934 6.8034e-06 deg
node 349.2178231066495 2.0474e-05 deg
peri 225.6093241610625 2.4657e-05 deg
M 145.395175641972 1.3476e-05 deg
tp 2458641.232085979723
(2019-Jun-06.73208598)
5.1378e-05 TDB
period 1384.753298438734
3.79
8.7394e-06
2.393e-08
d
yr
n .2599741054279407 1.6407e-09 deg/d
Q 2.913285934167031 1.2258e-08 au
  Orbit Determination Parameters
   # obs. used (total)      548  
   data-arc span      14499 days (39.70 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-10-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54009  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:56:01  

Additional Information
 Earth MOID = .957687 au 
 Jupiter MOID = 2.10669 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

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