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6988 (1994 WE3)
Classification: Main-belt Asteroid          SPK-ID: 2006988
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03275078015513499 3.9991e-08  
a 2.476360128937786 9.7792e-09 au
q 2.395257402770003 1.0327e-07 au
i 3.20327531571226 3.6543e-06 deg
node 220.0270705561638 6.9894e-05 deg
peri 334.7659649296747 9.0965e-05 deg
M 70.31338621019287 5.8948e-05 deg
tp 2458722.493695923167
(2019-Aug-26.99369592)
0.0002328 TDB
period 1423.374336836469
3.90
8.4314e-06
2.308e-08
d
yr
n .2529201143250346 1.4982e-09 deg/d
Q 2.55746285510557 1.0099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2196  
   data-arc span      15159 days (41.50 yr)  
   first obs. used      1978-10-27  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49278  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 02:41:11  

Additional Information
 Earth MOID = 1.39302 au 
 Jupiter MOID = 2.40306 au 
 T_jup = 3.478 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO337314  

6988 (1994 WE3)          Discovered 1994-Nov-28 by Ueda, S., Kaneda, H. at Kushiro
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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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