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17621 (1995 WD1)
Classification: Main-belt Asteroid          SPK-ID: 2017621
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135919129358384 5.3614e-08  
a 2.853838181478442 2.0993e-08 au
q 2.465946980522178 1.5055e-07 au
i 2.473426077532314 6.635e-06 deg
node 195.7020681258741 0.00011439 deg
peri 217.0896287196645 0.0001177 deg
M 112.6733952318258 2.4155e-05 deg
tp 2457049.360772066779
(2015-Jan-26.86077207)
0.00011887 JED
period 1760.931421723203
4.82
1.943e-05
5.32e-08
d
yr
n .2044372628933573 2.2558e-09 deg/d
Q 3.241729382434705 2.3846e-08 au
  Orbit Determination Parameters
   # obs. used (total)      963  
   data-arc span      7441 days (20.37 yr)  
   first obs. used      1995-11-16  
   last obs. used      2016-03-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51405  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:27:58  

Additional Information
 Earth MOID = 1.4759 au 
 Jupiter MOID = 2.11473 au 
 T_jup = 3.289 
[ 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 14.3 mag n/a MPO350943  

17621 (1995 WD1)          Discovered 1995-Nov-16 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20001013/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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