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17387 (1981 EV23)
Classification: Main-belt Asteroid          SPK-ID: 2017387
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1557072165354879 4.604e-08  
a 2.586792330526082 1.1867e-08 au
q 2.184010096984518 1.2055e-07 au
i 7.091627617372422 5.3866e-06 deg
node 358.4558552637858 3.7588e-05 deg
peri 104.9904537505919 4.2259e-05 deg
M 116.2413700865775 1.6757e-05 deg
tp 2458109.819280698276
(2017-Dec-22.31928070)
7.0965e-05 TDB
period 1519.640200533201
4.16
1.0457e-05
2.863e-08
d
yr
n .2368981814732762 1.6302e-09 deg/d
Q 2.989574564067645 1.3715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1221  
   data-arc span      14445 days (39.55 yr)  
   first obs. used      1979-10-18  
   last obs. used      2019-05-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52163  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:30:38  

Additional Information
 Earth MOID = 1.21367 au 
 Jupiter MOID = 2.16925 au 
 T_jup = 3.394 
[ 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 14.5   n/a MPO384903  
diameter diameter 2.972 km 0.373 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.381   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17387 (1981 EV23)          Discovered 1981-Mar-03 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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