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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1354094738849597 6.9331e-08  
a 2.851091324829814 3.8233e-08 AU
q 2.465026548536636 2.0394e-07 AU
i 2.470195090685504 8.893e-06 deg
node 195.7678727724816 0.0001553 deg
peri 216.4740416419091 0.0001588 deg
M 309.5146980769419 3.7034e-05 deg
tp 2457047.091201645608
(2015-Jan-24.59120165)
0.00018349 JED
period 1758.389654234667
4.81
3.537e-05
9.684e-08
d
yr
n .20473277872912 4.1182e-09 deg/d
Q 3.237156101122991 4.341e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      6449 days (17.66 yr)  
   first obs. used      1995-11-16  
   last obs. used      2013-07-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55613  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-05 18:42:08  

Additional Information
 Earth MOID = 1.47527 AU 
 T_jup = 3.290 
[ 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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