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JPL Small-Body Database Browser
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173937 (2001 WK9)
Classification: Main-belt Asteroid          SPK-ID: 2173937
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2424754896440804 4.8894e-08  
a 3.125355190942023 2.4982e-08 au
q 2.367533160706687 1.5056e-07 au
i 8.733703299673623 7.2016e-06 deg
node 218.2867758886412 4.2366e-05 deg
peri 226.5192103494774 4.5812e-05 deg
M 43.44596251616139 1.5969e-05 deg
tp 2458356.946474113271
(2018-Aug-26.44647411)
8.8516e-05 TDB
period 2018.122381029233
5.53
2.4197e-05
6.625e-08
d
yr
n .1783836319264255 2.1388e-09 deg/d
Q 3.883177221177358 3.1039e-08 au
  Orbit Determination Parameters
   # obs. used (total)      349  
   data-arc span      6397 days (17.51 yr)  
   first obs. used      2001-10-23  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56412  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 15:48:05  

Additional Information
 Earth MOID = 1.39318 au 
 Jupiter MOID = 1.46874 au 
 T_jup = 3.151 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO294211  

173937 (2001 WK9)          Discovered 2001-Nov-17 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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