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117656 (2005 EJ187)
Classification: Main-belt Asteroid          SPK-ID: 2117656
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1227666361075237 4.0547e-08  
a 3.02358543730935 2.2269e-08 au
q 2.652390024187185 1.2241e-07 au
i 1.374904332180058 4.4165e-06 deg
node 232.5277830027933 0.00023856 deg
peri 213.8891733242383 0.00024003 deg
M 55.79121941875925 2.4184e-05 deg
tp 2458702.891625812828
(2019-Aug-07.39162581)
0.00012913 TDB
period 1920.356210593191
5.26
2.1216e-05
5.809e-08
d
yr
n .1874652202618166 2.0711e-09 deg/d
Q 3.394780850431515 2.5003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      588  
   data-arc span      21758 days (59.57 yr)  
   first obs. used      1960-09-25  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47599  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:13:57  

Additional Information
 Earth MOID = 1.66882 au 
 Jupiter MOID = 1.80594 au 
 T_jup = 3.234 
[ 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 15.5   n/a MPO280568  
diameter diameter 5.676 km 0.416 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117656 (2005 EJ187)          Discovered 2005-Mar-10 by Mt. Lemmon Survey at Mt. Lemmon
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2005 EJ187 = 2000 JR93 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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