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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04008051443294673 5.8701e-08  
a 3.185995179056285 2.2365e-08 au
q 3.058298853298821 1.8739e-07 au
i 15.22805247279082 5.982e-06 deg
node 348.6203399996216 1.7018e-05 deg
peri 29.07432803743844 6.2557e-05 deg
M 226.7525585755251 5.9389e-05 deg
tp 2459769.316111880667
(2022-Jul-08.81611188)
0.00034424 TDB
period 2077.141574488815
5.69
2.1872e-05
5.988e-08
d
yr
n .1733151001460245 1.825e-09 deg/d
Q 3.313691504813749 2.3262e-08 au
  Orbit Determination Parameters
   # obs. used (total)      914  
   data-arc span      9796 days (26.82 yr)  
   first obs. used      1993-08-20  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55502  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:01:35  

Additional Information
 Earth MOID = 2.06285 au 
 Jupiter MOID = 1.9029 au 
 T_jup = 3.142 
[ 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 13.9   n/a MPO435891  
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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