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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1564903395273545 3.9659e-08  
a 2.585030556465521 1.053e-08 au
q 2.180498246995645 1.0395e-07 au
i 7.098362467007387 4.4026e-06 deg
node 358.2106703625543 3.1866e-05 deg
peri 106.0271106828748 3.4234e-05 deg
M 257.3942813548013 1.3535e-05 deg
tp 2459633.179196148242
(2022-Feb-22.67919615)		 5.8044e-05 TDB
period 1518.088003963859
4.16		 9.2757e-06
2.54e-08		 d
yr
n .2371404023086994 1.449e-09 deg/d
Q 2.989562865935397 1.2178e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1437  
   data-arc span      15056 days (41.22 yr)  
   first obs. used      1979-10-18  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5004  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:02:21  

Additional Information
 Earth MOID = 1.20971 au 
 Jupiter MOID = 2.16428 au 
 T_jup = 3.395 
[ 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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