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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1883620524113534 7.9268e-08  
a 2.528805957252752 1.9069e-08 au
q 2.052474876994567 2.0585e-07 au
i 16.49371520879583 8.2461e-06 deg
node 68.1402812350221 1.9702e-05 deg
peri 304.9461967158957 2.6461e-05 deg
M 303.6819684868074 1.7954e-05 deg
tp 2457630.282341952124
(2016-Aug-29.78234195)
7.3992e-05 JED
period 1468.830512717527
4.02
1.6614e-05
4.549e-08
d
yr
n .2450929476770968 2.7723e-09 deg/d
Q 3.005137037510938 2.2661e-08 au
  Orbit Determination Parameters
   # obs. used (total)      910  
   data-arc span      8304 days (22.74 yr)  
   first obs. used      1992-11-17  
   last obs. used      2015-08-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50611  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:50:13  

Additional Information
 Earth MOID = 1.09869 au 
 Jupiter MOID = 2.53839 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 14.1 mag n/a MPO337414  

18401 (1992 WE4)          Discovered 1992-Nov-21 by Ueda, S., Kaneda, H. at Kushiro
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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