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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0334383325390461 5.9417e-08  
a 2.476162978974678 1.6597e-08 AU
q 2.393364217862848 1.4947e-07 AU
i 3.202377246138088 6.0141e-06 deg
node 220.1168647023653 9.4697e-05 deg
peri 333.2422866514831 0.0001266 deg
M 285.7073489653077 8.3778e-05 deg
tp 2457294.204513935511
(2015-Sep-28.70451394)
0.00033144 JED
period 1423.204361995506
3.90
1.4309e-05
3.918e-08
d
yr
n .2529503208486771 2.5431e-09 deg/d
Q 2.558961740086509 1.7152e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1130  
   data-arc span      13172 days (36.06 yr)  
   first obs. used      1978-10-27  
   last obs. used      2014-11-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5129  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:19:19  

Additional Information
 Earth MOID = 1.393 AU 
 T_jup = 3.478 
[ 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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