Orbit Fit and Astrometric record for 13TF229

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 13TF229   
# Created Fri Dec  3 02:12:09 2021
# Orbit generated from Bernstein formalism
# Fitting     13 observations of     13
# Arc:   1.10y
# First observation: 2013/10/13
#  Last observation: 2014/11/18
Preliminary a, adot, b, bdot, g, gdot:
   0.000032   0.019958   0.000000   0.005066   0.023272   0.000000
# Chi-squared of fit:     1.63 DOF:     20 RMS:  0.06
# Min/Max residuals:    -0.21    0.08
# Exact a, adot, b, bdot, g, gdot:
  1.372144E-05  2.006035E-02  3.587750E-06  5.094243E-03  2.331990E-02  2.407872E-03
# Covariance matrix:
  7.2991E-13  7.6463E-13 -3.1978E-14  4.3741E-13  1.4742E-12  7.5348E-11
  7.6463E-13  5.9462E-12 -1.4184E-13  2.0873E-12  5.5364E-12  3.5958E-10
 -3.1978E-14 -1.4184E-13  4.1118E-13 -4.4859E-13 -1.5133E-13 -9.3810E-12
  4.3741E-13  2.0873E-12 -4.4859E-13  1.3349E-12  2.0980E-12  1.3875E-10
  1.4742E-12  5.5364E-12 -1.5133E-13  2.0980E-12  6.7845E-12  3.6141E-10
  7.5348E-11  3.5958E-10 -9.3810E-12  1.3875E-10  3.6141E-10  2.3903E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.425525   16.428203   -0.056687   -0.059379   -0.994017  2456578.699428
# Heliocentric elements and errors
Epoch:              2456570.5000  =  2013/10/05
Mean Anomaly:          128.20780 +/-     1.862
Argument of Peri:      205.64723 +/-     1.793
Long of Asc Node:       29.46486 +/-     0.002
Inclination:            14.61978 +/-     0.002
Eccentricity:         0.16043327 +/-    0.0042
Semi-Major Axis:     39.42220002 +/-    0.0473
Time of Perihelion: 2424373.0369 +/-     463.9
Perihelion:          33.09756761 +/-    0.1689
Aphelion:            45.74683242 +/-    0.1731
Period (y)              247.5252 +/-      0.45
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.99614430 +/-    0.0046
Ecliptic Y           12.44489035 +/-    0.0013
Ecliptic Z           -2.56212207 +/-    0.0003
Ecliptic XDOT        -0.00036730 +/-    0.0000
Ecliptic YDOT         0.00234748 +/-    0.0000
Ecliptic ZDOT         0.00058027 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.87614274 +/-    0.0044
Geocenter to KBO     42.88183952 +/-    0.0048
# Hcoef:  6.74

The following table shows the complete astrometric record for 13TF229. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (13TF229) followed by the observatory code and reference code for the source of the astrometry.

2013 10  13.19865  01 05 49.006  +03 17 41.66  22.8z 13TF229   W84  C~52Rg      
2013 10  13.20587  01 05 48.975  +03 17 41.55  22.8i 13TF229   W84  C~52Rg      
2013 11  22.15247  01 03 09.298  +03 04 41.10  23.3i 13TF229   W84  C~52Rg      
2013 11  22.15385  01 03 09.302  +03 04 41.06  22.9z 13TF229   W84  C~52Rg      
2014 10  02.26648  01 10 26.968  +04 04 39.44  23.2r 13TF229   W84  C~52Rg      
2014 10  02.29273  01 10 26.854  +04 04 38.66  22.8i 13TF229   W84  C~52Rg      
2014 10  29.22470  01 08 27.475  +03 54 00.75  23.6r 13TF229   W84  C~52Rg      
2014 10  29.22605  01 08 27.469  +03 54 00.75  22.8i 13TF229   W84  C~52Rg      
2014 11  14.07758  01 07 24.376  +03 48 55.74  23.2r 13TF229   W84  C~52Rg      
2014 11  14.07893  01 07 24.379  +03 48 55.65  22.6i 13TF229   W84  C~52Rg      
2014 11  15.07745  01 07 20.758  +03 48 39.34  23.3r 13TF229   W84  C~52Rg      
2014 11  17.07820  01 07 13.686  +03 48 07.41  22.6z 13TF229   W84  C~52Rg      
2014 11  18.12575  01 07 10.057  +03 47 51.71  22.8z 13TF229   W84  C~52Rg      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

     1   0.0000      0.00    -0.02       0.00    -0.03
     2   0.0000     -0.47     0.03       0.08     0.02
     3   0.1094  -2508.72    -0.06     193.64     0.04
     4   0.1094  -2508.68     0.05     193.58    -0.03
     5   0.9694   4922.14    -0.02    1017.05     0.05
     6   0.9695   4920.27    -0.02    1016.98    -0.09
     7   1.0432   3024.90     0.05    1108.20     0.04
     8   1.0432   3024.82     0.05    1108.23     0.07
     9   1.0866   2035.47    -0.02    1186.64     0.07
    10   1.0866   2035.47     0.07    1186.54    -0.04
    11   1.0893   1979.15    -0.05    1192.16     0.08
    12   1.0948   1869.12    -0.04    1203.06    -0.21
    13   1.0977   1812.92    -0.02    1209.28     0.04

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

13TF229    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.618    39.770    39.491
ecceobj         0.158     0.170     0.148
incobj         14.583    14.585    14.582
qmin           31.934    31.662    32.395
qmax           47.300    47.789    47.061
amean          39.456    39.457    39.457
amin           39.145    39.023    39.030
amax           39.826    39.947    39.953
emean           0.162     0.174     0.158
emin            0.131     0.147     0.135
emax            0.189     0.198     0.178
imean          14.425    14.185    14.193
imin           13.535    13.515    13.589
imax           15.310    14.989    14.761
excite_mean     0.297     0.301     0.292
fracstop        1.000     1.000     1.000
cjmean          2.951     2.949     2.955

libcent 0       179.8     179.4     180.0
libamp  0        21.8      85.9      93.3
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       176.9     173.4     180.2
kozaiamp        179.9     180.0     180.0