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187576 (2006 WK9)
Classification: Main-belt Asteroid          SPK-ID: 2187576
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1820447017159645 4.6081e-08  
a 2.240003458069762 1.0709e-08 au
q 1.832222696702723 1.0434e-07 au
i 6.278270367578691 4.939e-06 deg
node 102.6301308112028 4.9426e-05 deg
peri 141.728489461517 5.1688e-05 deg
M 253.9027589499748 1.6453e-05 deg
tp 2459561.388505660741
(2021-Dec-12.88850566)
5.7416e-05 TDB
period 1224.535725454061
3.35
8.7811e-06
2.404e-08
d
yr
n .2939889727321031 2.1082e-09 deg/d
Q 2.647784219436801 1.2658e-08 au
  Orbit Determination Parameters
   # obs. used (total)      360  
   data-arc span      8333 days (22.81 yr)  
   first obs. used      1998-04-21  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6061  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:55:59  

Additional Information
 Earth MOID = .821949 au 
 Jupiter MOID = 2.38286 au 
 T_jup = 3.605 
[ 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 17.09   n/a MPCxxxxx  

187576 (2006 WK9)          Discovered 2006-Nov-16 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2006 WK9 = 1998 HX145 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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