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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1884199574884662 9.1716e-08  
a 2.528243043161908 2.0175e-08 AU
q 2.051871596448831 2.3463e-07 AU
i 16.49562819946139 8.4888e-06 deg
node 68.14282875491008 2.3409e-05 deg
peri 305.0524598650244 2.9691e-05 deg
M 156.4626632751871 1.7787e-05 deg
tp 2456162.332216688224
(2012-Aug-22.83221669)
7.175e-05 JED
period 1468.340095861537
4.02
1.7576e-05
4.812e-08
d
yr
n .2451748072634173 2.9347e-09 deg/d
Q 3.004614489874986 2.3977e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      774  
   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      .53337  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 14:03:18  

Additional Information
 Earth MOID = 1.0982 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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