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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03343833287235964 5.9945e-08  
a 2.476162979095024 1.6685e-08 AU
q 2.393364217153831 1.5055e-07 AU
i 3.202377505547151 6.0535e-06 deg
node 220.1168630638291 9.4825e-05 deg
peri 333.242288367023 0.00012673 deg
M 285.7073488306812 8.3912e-05 deg
tp 2457294.204514489148
(2015-Sep-28.70451449)
0.00033199 JED
period 1423.204362099261
3.90
1.4385e-05
3.938e-08
d
yr
n .2529503208302364 2.5567e-09 deg/d
Q 2.558961741036216 1.7243e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1111  
   data-arc span      13123 days (35.93 yr)  
   first obs. used      1978-10-27  
   last obs. used      2014-10-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51491  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:08:45  

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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