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181621 (2006 WC173)
Classification: Main-belt Asteroid          SPK-ID: 2181621
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09878423569496758 4.4937e-08  
a 2.633444506507591 1.7034e-08 au
q 2.373301703687128 1.2088e-07 au
i 3.409275958910711 4.0767e-06 deg
node 85.0234054695762 8.3138e-05 deg
peri 305.8564152774305 8.6207e-05 deg
M 140.3519566712885 2.524e-05 deg
tp 2458591.943851962987
(2019-Apr-18.44385196)
0.00010608 TDB
period 1560.934514125953
4.27
1.5145e-05
4.146e-08
d
yr
n .2306310717984106 2.2376e-09 deg/d
Q 2.893587309328055 1.8716e-08 au
  Orbit Determination Parameters
   # obs. used (total)      423  
   data-arc span      10023 days (27.44 yr)  
   first obs. used      1993-11-21  
   last obs. used      2021-05-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54077  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:09:40  

Additional Information
 Earth MOID = 1.37966 au 
 Jupiter MOID = 2.50098 au 
 T_jup = 3.389 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.30   n/a E2021B55  

181621 (2006 WC173)          Discovered 2006-Nov-23 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

Alternate Designations
 2006 WC173 = 2003 AO27 = 2004 GO86 = 2005 NK84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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