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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1352949218971257 6.6688e-08  
a 2.850577843619606 2.4588e-08 AU
q 2.464909136905415 1.9516e-07 AU
i 2.470435922793663 8.2201e-06 deg
node 195.7678003662507 0.000123 deg
peri 216.5242206340877 0.00012611 deg
M 350.4198029888753 2.4975e-05 deg
tp 2457047.281024018664
(2015-Jan-24.78102402)
0.00012194 JED
period 1757.914646970497
4.81
2.2744e-05
6.227e-08
d
yr
n .204788099706892 2.6496e-09 deg/d
Q 3.236246550333798 2.7914e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      716  
   data-arc span      7003 days (19.17 yr)  
   first obs. used      1995-11-16  
   last obs. used      2015-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52025  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:49:19  

Additional Information
 Earth MOID = 1.47595 AU 
 T_jup = 3.291 
[ 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 14.2 mag n/a MPO266049  

17621 (1995 WD1)          Discovered 1995-Nov-16 by Ueda, S., Kaneda, H. at Kushiro (399)
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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