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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 ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0812619205768785 1.0107e-07  
a 3.147011668614101 4.4583e-08 au
q 2.891279456344671 3.1207e-07 au
i 17.4077796630952 1.081e-05 deg
node 70.90617131438414 2.3404e-05 deg
peri 354.0531706814023 5.1445e-05 deg
M 208.2651351028142 4.7526e-05 deg
tp 2458259.966271767374
(2018-May-21.46627177)
0.00027826 JED
period 2039.134895239184
5.58
4.3332e-05
1.186e-07
d
yr
n .1765454560365282 3.7517e-09 deg/d
Q 3.40274388088353 4.8206e-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 = 1.90484 au 
 Jupiter MOID = 1.92244 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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