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9644 (1994 WQ3)
Classification: Main-belt Asteroid          SPK-ID: 2009644
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1497079008040803 6.3841e-08  
a 2.910336478672249 2.4427e-08 AU
q 2.474636113816688 1.8649e-07 AU
i 8.403605062144525 6.7325e-06 deg
node 168.3140773355085 3.8402e-05 deg
peri 169.444471984653 4.3259e-05 deg
M 87.31437241832758 1.8708e-05 deg
tp 2456560.658233007875
(2013-Sep-25.15823301)
9.3912e-05 JED
period 1813.481924356458
4.97
2.2831e-05
6.251e-08
d
yr
n .1985131448871493 2.4992e-09 deg/d
Q 3.346036843527811 2.8084e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1136  
   data-arc span      7381 days (20.21 yr)  
   first obs. used      1994-11-26  
   last obs. used      2015-02-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49095  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 14:19:10  

Additional Information
 Earth MOID = 1.46678 AU 
 T_jup = 3.251 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO267746  

9644 (1994 WQ3)          Discovered 1994-Nov-26 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 19981110/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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