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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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 13.93   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

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2010-Dec-06 01:27 < 00:01 Jupiter 1.92790285512058 1.92790224532369 1.92790346491779 5.42089303232613 5.33923055612688 2455536.560465819 0.241150622005744 186.856594435993 28.3255026605179 87.7267702053585 3076214.83457033 T 18 CATAB v2.0f-lin.ifort 2020-Nov-13 02:01:38 2020-Nov-13 02:01
2021-Dec-02 14:54 < 00:01 Jupiter 1.9142924601077 1.91429190529537 1.91429301492113 5.5298303955846 5.44922732369557 2459551.121148124 0.350413670731923 174.881592536544 23.3029879062579 85.8412729981462 3207268.65136499 T 18 CATAB v2.0f-lin.ifort 2020-Nov-13 02:01:38 2020-Nov-13 02:01
2153-Feb-12 10:42 00:04 Jupiter 1.92045097244587 1.92044981830771 1.92045212662661 5.44796785621452 5.36639970860633 2507469.945902869 4.48720716491436 540.355143682258 29.2408736153318 84.6404634584443 3042674.03498012 T 18 CATAB v2.0f-lin.ifort 2020-Nov-13 02:01:38 2020-Nov-13 02:01
2164-Feb-10 09:55 00:05 Jupiter 1.93151502242895 1.93151387557224 1.93151616929761 5.50945579118222 5.42927693629536 2511484.913212767 4.72902678300599 288.628301107667 28.2440209113449 79.8741180454551 3231759.29486906 T 18 CATAB v2.0f-lin.ifort 2020-Nov-13 02:01:38 2020-Nov-13 02:01

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