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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1352949227339574 6.6701e-08  
a 2.850577842771024 2.4625e-08 AU
q 2.464909133786187 1.9522e-07 AU
i 2.470436298285954 8.2364e-06 deg
node 195.7677950470985 0.00012325 deg
peri 216.5242252138202 0.00012636 deg
M 350.419803999255 2.5025e-05 deg
tp 2457047.281019063994
(2015-Jan-24.78101906)
0.00012219 JED
period 1757.914646185533
4.81
2.2778e-05
6.236e-08
d
yr
n .2047880997983364 2.6536e-09 deg/d
Q 3.23624655175586 2.7956e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      706  
   data-arc span      6972 days (19.09 yr)  
   first obs. used      1995-11-16  
   last obs. used      2014-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52231  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:36:08  

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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