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117680 (2005 EW223)
Classification: Main-belt Asteroid          SPK-ID: 2117680
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1546530928077988 3.7808e-08  
a 2.39690549253918 1.3457e-08 au
q 2.026216644949996 8.7008e-08 au
i 1.86419033162546 4.7233e-06 deg
node 317.7715516176696 0.00015947 deg
peri 158.6274910370821 0.00016112 deg
M 94.671329117019 2.3648e-05 deg
tp 2458644.056445104411
(2019-Jun-09.55644510)
8.7266e-05 TDB
period 1355.422818705775
3.71
1.1414e-05
3.125e-08
d
yr
n .2655997781885846 2.2367e-09 deg/d
Q 2.767594340128365 1.5538e-08 au
  Orbit Determination Parameters
   # obs. used (total)      344  
   data-arc span      7542 days (20.65 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54684  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:13:57  

Additional Information
 Earth MOID = 1.04264 au 
 Jupiter MOID = 2.31927 au 
 T_jup = 3.511 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO469217  

117680 (2005 EW223)          Discovered 2005-Mar-13 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 2005 EW223 = 1999 RG8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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