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17385 (1981 EU13)
Classification: Main-belt Asteroid          SPK-ID: 2017385
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1873273269903755 3.2677e-08  
a 2.310941588586006 7.4886e-09 au
q 1.878039077965297 7.7337e-08 au
i 8.492451125520526 4.811e-06 deg
node 199.0014864061831 2.4396e-05 deg
peri 273.8935038277071 2.9008e-05 deg
M 354.0034162011653 1.3379e-05 deg
tp 2458621.873876011630
(2019-May-18.37387601)
4.7697e-05 TDB
period 1283.163151273227
3.51
6.2371e-06
1.708e-08
d
yr
n .2805566849724352 1.3637e-09 deg/d
Q 2.743844099206714 8.8914e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1075  
   data-arc span      13866 days (37.96 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53567  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 22:18:55  

Additional Information
 Earth MOID = .917009 au 
 Jupiter MOID = 2.42461 au 
 T_jup = 3.547 
[ 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 15.4   n/a MPO467891  
diameter diameter 4.031 km 0.149 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17385 (1981 EU13)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EU13 = 1990 WQ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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