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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08158000221863583 1.0109e-07  
a 3.146139950494153 4.4644e-08 AU
q 2.889477846352701 3.1205e-07 AU
i 17.41028231910621 1.0812e-05 deg
node 70.90523995780366 2.3401e-05 deg
peri 354.107585950141 5.1288e-05 deg
M 137.5649211953764 4.6661e-05 deg
tp 2456221.619759830244
(2012-Oct-21.11975983)
0.00025726 JED
period 2038.287697362024
5.58
4.3385e-05
1.188e-07
d
yr
n .1766188357344826 3.7593e-09 deg/d
Q 3.402802054635605 4.8286e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      664  
   data-arc span      7202 days (19.72 yr)  
   first obs. used      1995-11-16  
   last obs. used      2015-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51013  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 15:18:38  

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
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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