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JPL Small-Body Database Browser
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66661 Wallin (1999 TK2)
Classification: Main-belt Asteroid          SPK-ID: 2066661
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1774293465957667 6.0266e-08  
a 3.114591123982941 2.6807e-08 au
q 2.561971255941673 1.8794e-07 au
i 28.20550277447152 8.9949e-06 deg
node 342.0051170472059 9.9506e-06 deg
peri 229.9000655588901 2.4791e-05 deg
M 47.75203308808862 2.2206e-05 deg
tp 2458734.188846736294
(2019-Sep-07.68884674)
0.00012417 TDB
period 2007.705410114753
5.50
2.5921e-05
7.097e-08
d
yr
n .1793091746360456 2.315e-09 deg/d
Q 3.667210992024209 3.1564e-08 au
  Orbit Determination Parameters
   # obs. used (total)      660  
   data-arc span      10812 days (29.60 yr)  
   first obs. used      1989-10-01  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54793  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:28:38  

Additional Information
 Earth MOID = 1.63172 au 
 Jupiter MOID = 1.54071 au 
 T_jup = 3.013 
[ 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 14.2   n/a MPO347957  

66661 Wallin           Discovered 1999 Oct. 2 by D. S. Dixon at Jornada Observatory.
John F. Wallin (b. 1961) is an astrophysicist at George Mason University, Virginia. He is an educator and researcher of stellar formation, galactic dynamics and the presence and effects of non-baryonic matter in the solar system.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051215/MPCPages.arcLast Updated: 2006-03-22

[ show close-approach data ]
Alternate Designations
 1999 TK2 = 2002 DB8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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