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17389 (1981 EN30)
Classification: Main-belt Asteroid          SPK-ID: 2017389
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827230684932233 3.7154e-08  
a 3.099082122675683 1.7683e-08 au
q 2.53280832770789 1.1693e-07 au
i 1.935809642983443 4.5479e-06 deg
node 58.82991761724047 0.0001245 deg
peri 278.6298580591888 0.00012513 deg
M 190.4750586916251 1.2852e-05 deg
tp 2459538.880892392011
(2021-Nov-20.38089239)
7.4791e-05 TDB
period 1992.728141675724
5.46
1.7056e-05
4.67e-08
d
yr
n .1806568555293593 1.5463e-09 deg/d
Q 3.665355917643476 2.0915e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1516  
   data-arc span      13961 days (38.22 yr)  
   first obs. used      1981-02-09  
   last obs. used      2019-05-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5439  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:30:38  

Additional Information
 Earth MOID = 1.52362 au 
 Jupiter MOID = 1.72256 au 
 T_jup = 3.196 
[ 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 13.3   n/a MPO435861  
diameter diameter 10.973 km 0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.073   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17389 (1981 EN30)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EN30 = 1998 HE64 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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