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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03360796166592583 6.4607e-08  
a 2.475045268032518 1.7422e-08 AU
q 2.39186404154305 1.6111e-07 AU
i 3.203320757463798 6.5539e-06 deg
node 220.1411437929524 0.00010003 deg
peri 333.9762998059876 0.00013432 deg
M 234.3507088440126 8.9548e-05 deg
tp 2457296.898760872123
(2015-Oct-01.39876087)
0.00035447 JED
period 1422.24084409766
3.89
1.5017e-05
4.111e-08
d
yr
n .2531216857496466 2.6726e-09 deg/d
Q 2.558226494521986 1.8008e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1101  
   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      .54045  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Feb-19 18:05:55  

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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