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17386 (1981 EA23)
Classification: Main-belt Asteroid          SPK-ID: 2017386
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04651451851744907 4.4921e-08  
a 2.666581223513173 1.5161e-08 au
q 2.542546481813788 1.1725e-07 au
i 8.558822695325015 5.4565e-06 deg
node 352.3564240801069 3.0005e-05 deg
peri 239.6173382505841 6.4222e-05 deg
M 221.761328716616 5.8334e-05 deg
tp 2459211.241880603361
(2020-Dec-27.74188060)		 0.00025856 TDB
period 1590.488934651945
4.35		 1.3564e-05
3.714e-08		 d
yr
n .2263454917269077 1.9304e-09 deg/d
Q 2.790615965212559 1.5866e-08 au
   Orbit Determination Parameters
   # obs. used (total)      844  
   data-arc span      13871 days (37.98 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57463  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:18:57  

Additional Information
 Earth MOID = 1.5459 au 
 Jupiter MOID = 2.21238 au 
 T_jup = 3.366 
[ 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 14.9   n/a MPO365461  
diameter diameter 3.175 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.304   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17386 (1981 EA23)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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