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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .135294921994964 6.6645e-08  
a 2.850577843874301 2.449e-08 AU
q 2.464909136846755 1.9498e-07 AU
i 2.470435516491143 8.1825e-06 deg
node 195.76780420405 0.00012233 deg
peri 216.5242169138451 0.00012544 deg
M 350.4198027839288 2.4846e-05 deg
tp 2457047.281025025707
(2015-Jan-24.78102503)
0.00012131 JED
period 1757.914647206098
4.81
2.2654e-05
6.202e-08
d
yr
n .2047880996794457 2.639e-09 deg/d
Q 3.236246550901848 2.7803e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      803  
   data-arc span      7036 days (19.26 yr)  
   first obs. used      1995-11-16  
   last obs. used      2015-02-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49496  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:58:44  

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
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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