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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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1884370482069211 8.1545e-08  
a 2.528209285116928 1.9213e-08 AU
q 2.051800990180164 2.11e-07 AU
i 16.49581318747299 8.3068e-06 deg
node 68.14131439751715 2.0803e-05 deg
peri 305.02051630 2.7227e-05 deg
M 205.5459475125754 1.768e-05 deg
tp 2457630.462599866761
(2016-Aug-29.96259987)
7.3961e-05 JED
period 1468.310687222004
4.02
1.6738e-05
4.583e-08
d
yr
n .2451797178437135 2.7948e-09 deg/d
Q 3.004617580053692 2.2833e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      851  
   data-arc span      8224 days (22.52 yr)  
   first obs. used      1992-11-17  
   last obs. used      2015-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51892  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:31:35  

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 14.1 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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