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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1477946551184008 6.0733e-08  
a 2.91629924317303 2.2777e-08 au
q 2.485285802306219 1.7483e-07 au
i 8.409846202229872 6.4952e-06 deg
node 168.281421622702 3.2933e-05 deg
peri 170.2334269065382 3.6875e-05 deg
M 205.3529726868106 1.7915e-05 deg
tp 2458381.921992720186
(2018-Sep-20.42199272)
9.4108e-05 JED
period 1819.058033424448
4.98
2.1311e-05
5.835e-08
d
yr
n .1979046261225025 2.3185e-09 deg/d
Q 3.347312684039841 2.6143e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1324  
   data-arc span      7808 days (21.38 yr)  
   first obs. used      1994-11-26  
   last obs. used      2016-04-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48274  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:06:01  

Additional Information
 Earth MOID = 1.47621 au 
 Jupiter MOID = 2.05235 au 
 T_jup = 3.249 
[ 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 12.8 mag n/a MPO358724  

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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