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20648 (1999 TF166)
Classification: Main-belt Asteroid          SPK-ID: 2020648
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03985510482030191 5.899e-08  
a 3.188027012160521 2.2033e-08 au
q 3.060967861420909 1.8913e-07 au
i 15.22827190866998 5.9812e-06 deg
node 348.5964290590094 1.6979e-05 deg
peri 28.21498261888014 6.2222e-05 deg
M 262.2910600632872 5.9227e-05 deg
tp 2459764.804113979502
(2022-Jul-04.30411398)
0.00034336 TDB
period 2079.128902270384
5.69
2.1554e-05
5.901e-08
d
yr
n .1731494375393869 1.795e-09 deg/d
Q 3.315086162900132 2.2911e-08 au
  Orbit Determination Parameters
   # obs. used (total)      918  
   data-arc span      9796 days (26.82 yr)  
   first obs. used      1993-08-20  
   last obs. used      2020-06-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55917  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:04  

Additional Information
 Earth MOID = 2.06335 au 
 Jupiter MOID = 1.90036 au 
 T_jup = 3.141 
[ 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 13.93   n/a E2021B10  
diameter diameter 9.669 km 0.156 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20648 (1999 TF166)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TF166 = 1993 QL9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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