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145545 Wensayling (2006 KA39)
Classification: Outer Main-belt Asteroid          SPK-ID: 2145545
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1652893323747008 4.4369e-08  
a 3.294645429178217 3.3011e-08 au
q 2.75007568577799 1.4501e-07 au
i 15.42958086237836 5.0685e-06 deg
node 77.99069376014994 1.7546e-05 deg
peri 122.9245877018149 2.2617e-05 deg
M 158.4027965442212 1.6363e-05 deg
tp 2458039.392880084986
(2017-Oct-12.89288008)
9.3957e-05 TDB
period 2184.295799808135
5.98
3.2829e-05
8.988e-08
d
yr
n .1648128426706776 2.4771e-09 deg/d
Q 3.839215172578445 3.8468e-08 au
  Orbit Determination Parameters
   # obs. used (total)      394  
   data-arc span      7914 days (21.67 yr)  
   first obs. used      1999-02-19  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58211  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:35:12  

Additional Information
 Earth MOID = 1.78059 au 
 Jupiter MOID = 1.33612 au 
 T_jup = 3.092 
[ 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 14.8   n/a MPO493828  
diameter diameter 5.837 km 1.415 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

145545 Wensayling           Discovered 2006 May 22 by Q.-z. Ye and T.-C. Yang at Lulin Observatory.
Sayling Wen (1948-2003), a tireless educator and promoter for social work, was instrumental in in establishing computer networks for "e-learning" at schools in many villages in Taiwan, China and Asia. His humanitarian spirit has also helped shape university education in Asia.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080520/MPCPages.arcLast Updated: 2008-05-22

Alternate Designations
 2006 KA39 = 2003 YR123 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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