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31003 (1995 WQ2)
Classification: Main-belt Asteroid          SPK-ID: 2031003
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .08158001711880722 1.036e-07  
a 3.146139971575938 5.3219e-08 AU
q 2.889477818836609 3.1529e-07 AU
i 17.41028214493801 1.0945e-05 deg
node 70.9052282680137 2.8175e-05 deg
peri 354.1075583929149 7.6496e-05 deg
M 137.5649510548099 6.2961e-05 deg
tp 2456221.619582940080
(2012-Oct-21.11958294)
0.00035879 JED
period 2038.287717849388
5.58
5.1718e-05
1.416e-07
d
yr
n .1766188339592404 4.4814e-09 deg/d
Q 3.402802124315266 5.7561e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      6772 days (18.54 yr)  
   first obs. used      1995-11-16  
   last obs. used      2014-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53392  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 03:22:53  

Additional Information
 Earth MOID = 1.90349 AU 
 T_jup = 3.133 
[ 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 13.7 mag n/a MPO302247  

31003 (1995 WQ2)          Discovered 1995-Nov-16 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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