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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04642841414161285 3.9782e-08  
a 2.66577490143158 1.2942e-08 au
q 2.542007200299597 1.0686e-07 au
i 8.560313604054754 5.2797e-06 deg
node 352.3474469298154 2.63e-05 deg
peri 240.0245533381652 6.2117e-05 deg
M 311.9078774230078 5.741e-05 deg
tp 2459212.875827242704
(2020-Dec-29.37582724)
0.00025364 TDB
period 1589.767590003413
4.35
1.1577e-05
3.17e-08
d
yr
n .2264481942289609 1.6491e-09 deg/d
Q 2.789542602563563 1.3543e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1012  
   data-arc span      14321 days (39.21 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54871  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:35:14  

Additional Information
 Earth MOID = 1.54535 au 
 Jupiter MOID = 2.21278 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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