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18401 (1992 WE4)
Classification: Main-belt Asteroid          SPK-ID: 2018401
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1884370962848715 9.164e-08  
a 2.528209287542936 2.0066e-08 AU
q 2.051800870597901 2.3437e-07 AU
i 16.49581348930689 8.4822e-06 deg
node 68.14130077482643 2.3408e-05 deg
peri 305.0205301029126 2.9683e-05 deg
M 205.5459440201876 1.7889e-05 deg
tp 2457630.462615017701
(2016-Aug-29.96261502)
7.4783e-05 JED
period 1468.310689335437
4.02
1.7481e-05
4.786e-08
d
yr
n .2451797174908108 2.919e-09 deg/d
Q 3.004617704487971 2.3847e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      779  
   data-arc span      7866 days (21.54 yr)  
   first obs. used      1992-11-17  
   last obs. used      2014-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53186  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:30:59  

Additional Information
 Earth MOID = 1.09921 AU 
 T_jup = 3.371 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a MPO256999  

18401 (1992 WE4)          Discovered 1992-Nov-21 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1992 WE4 = 1999 JT127 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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