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6988 (1994 WE3)
Classification: Main-belt Asteroid          SPK-ID: 2006988
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03360800429529602 6.0419e-08  
a 2.475045257534546 1.6806e-08 AU
q 2.391863925888273 1.5135e-07 AU
i 3.203317588390226 6.0786e-06 deg
node 220.1411325526325 9.4942e-05 deg
peri 333.9762933358944 0.00012655 deg
M 234.3507257833438 8.3478e-05 deg
tp 2457296.898690792199
(2015-Oct-01.39869079)
0.00033022 JED
period 1422.24083504895
3.89
1.4486e-05
3.966e-08
d
yr
n .2531216873600803 2.5782e-09 deg/d
Q 2.558226589180819 1.7371e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1104  
   data-arc span      12890 days (35.29 yr)  
   first obs. used      1978-10-27  
   last obs. used      2014-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51454  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:51:34  

Additional Information
 Earth MOID = 1.39026 AU 
 T_jup = 3.479 
[ 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 13.5 mag n/a MPO267736  

6988 (1994 WE3)          Discovered 1994-Nov-28 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1994 WE3 = 1978 UK4 = 1988 JN1 = 1989 PT1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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