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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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03343832793567914 6.0436e-08  
a 2.476162978027025 1.6759e-08 AU
q 2.393364228345569 1.5156e-07 AU
i 3.202377776026823 6.0773e-06 deg
node 220.1168602584895 9.4971e-05 deg
peri 333.2422899445348 0.00012686 deg
M 285.7073507840487 8.3969e-05 deg
tp 2457294.204506576794
(2015-Sep-28.70450658)
0.00033222 JED
period 1423.204361178493
3.90
1.4449e-05
3.956e-08
d
yr
n .2529503209938872 2.5681e-09 deg/d
Q 2.55896172770848 1.732e-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 = 1.393 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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