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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1497078989812021 6.3511e-08  
a 2.910336478997006 2.4388e-08 AU
q 2.474636119398015 1.8541e-07 AU
i 8.403605324957999 6.707e-06 deg
node 168.3140777588305 3.839e-05 deg
peri 169.4444712350396 4.3231e-05 deg
M 87.31437255391147 1.8702e-05 deg
tp 2456560.658232251256
(2013-Sep-25.15823225)
9.3873e-05 JED
period 1813.481924660001
4.97
2.2795e-05
6.241e-08
d
yr
n .198513144853922 2.4952e-09 deg/d
Q 3.346036838595997 2.8039e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1150  
   data-arc span      7415 days (20.30 yr)  
   first obs. used      1994-11-26  
   last obs. used      2015-03-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48931  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:35:41  

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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