Orbit Fit and Astrometric record for 07TB418

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: 07TB418   
# Created Wed Dec  8 02:10:41 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     32 observations of     32
# Arc:  14.16y
# First observation: 2007/10/04
#  Last observation: 2021/12/01
# Chi-squared of fit:    24.67 DOF:     58 RMS:  0.16
# Min/Max residuals:    -0.38    0.68
# Exact a, adot, b, bdot, g, gdot:
  1.079723E-05  1.225158E-02  1.069020E-06  2.761250E-04  1.694176E-02 -5.413304E-03
# Covariance matrix:
  2.6522E-13 -6.1747E-14  1.4303E-15 -1.3023E-15  9.1773E-14 -2.6677E-13
 -6.1747E-14  2.4640E-14 -9.3530E-16  6.3415E-16 -2.5421E-14  1.3552E-13
  1.4303E-15 -9.3530E-16  1.6487E-13 -1.7411E-14 -4.9478E-16 -5.9035E-15
 -1.3023E-15  6.3415E-16 -1.7411E-14  2.5117E-15 -8.4126E-16  3.8676E-15
  9.1773E-14 -2.5421E-14 -4.9478E-16 -8.4126E-16  1.7374E-13 -1.3896E-13
 -2.6677E-13  1.3552E-13 -5.9035E-15  3.8676E-15 -1.3896E-13  8.3120E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -6.512555   16.501234    0.100084   -0.112978   -0.990656  2454377.721394
# Heliocentric elements and errors
Epoch:              2454378.5000  =  2007/10/05
Mean Anomaly:          285.51299 +/-     0.019
Argument of Peri:       42.59491 +/-     0.009
Long of Asc Node:       94.50637 +/-     0.002
Inclination:             6.54412 +/-     0.000
Eccentricity:         0.40694821 +/-    0.0001
Semi-Major Axis:     56.94927837 +/-    0.0048
Time of Perihelion: 2486857.9591 +/-      18.0
Perihelion:          33.77387122 +/-    0.0045
Aphelion:            80.12468552 +/-    0.0076
Period (y)              429.7744 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           57.21302023 +/-    0.0014
Ecliptic Y           16.84024062 +/-    0.0004
Ecliptic Z           -6.69472299 +/-    0.0002
Ecliptic XDOT        -0.00138458 +/-    0.0000
Ecliptic YDOT         0.00165156 +/-    0.0000
Ecliptic ZDOT         0.00014346 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   60.01481757 +/-    0.0013
Geocenter to KBO     59.02606333 +/-    0.0015
# Hcoef:  5.92

The following table shows the complete astrometric record for 07TB418. 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 (07TB418) followed by the observatory code and reference code for the source of the astrometry.

2007 10  04.22064  01 10 48.14   +00 28 09.8   23.2R 07TB418   807  Cx2653      
2007 11  13.03643  01 08 42.88   +00 16 34.6   23.4R 07TB418   807  Cx2653      
2007 11  13.05461  01 08 42.82   +00 16 34.4   22.9I 07TB418   807  Cx2653      
2007 11  15.03460  01 08 37.47   +00 16 10.0   23.3R 07TB418   807  Cx2653      
2007 11  15.03977  01 08 37.45   +00 16 10.0   22.9I 07TB418   807  Cx2653      
2007 11  17.02754  01 08 32.23   +00 15 46.8   23.4R 07TB418   807  Cx2653      
2007 11  17.07006  01 08 32.12   +00 15 46.4   22.5I 07TB418   807  Cx2653      
2007 12  01.11631  01 07 59.94   +00 13 44.4   23.3R 07TB418   807  Cx2653      
2013 09  10.34945  01 27 58.612  +02 21 19.00  24.8g 07TB418   W84  C~4yH4      
2013 09  10.36825  01 27 58.56   +02 21 18.8   23.7r 07TB418   W84  C~3cb5      
2013 09  10.36963  01 27 58.56   +02 21 18.7   23.4i 07TB418   W84  C~3cb5      
2013 11  08.19700  01 24 49.260  +02 02 11.78  24.0g 07TB418   W84  C~4yH4      
2013 11  08.19838  01 24 49.255  +02 02 11.57  23.4r 07TB418   W84  C~4yH4      
2013 11  08.21106  01 24 49.226  +02 02 11.28  23.2i 07TB418   W84  C~4yH4      
2014 10  02.31747  01 29 39.41   +02 31 59.5   23.5r 07TB418   W84  C~3cb5      
2014 10  02.31883  01 29 39.41   +02 31 59.6   23.6i 07TB418   W84  C~3cb5      
2014 10  23.25560  01 28 28.200  +02 24 55.75  23.0r 07TB418   W84  C~4yH4      
2014 10  28.21727  01 28 11.359  +02 23 23.64  23.6g 07TB418   W84  C~4yH4      
2015 10  17.17378  01 31 37.835  +02 45 16.39  24.0r 07TB418   W84  C~4yH4      
2016 08  16.37872  01 37 12.870  +03 23 08.13  23.1z 07TB418   W84  C~4yH4      
2016 08  26.34061  01 36 56.59   +03 20 36.5   23.2r 07TB418   W84  C~3cb5      
2016 08  30.34139  01 36 48.521  +03 19 28.82  24.2g 07TB418   W84  C~4yH4      
2016 10  21.23668  01 34 10.906  +03 02 08.96  22.2i 07TB418   W84  C~4yH4      
2016 10  29.16974  01 33 43.49   +02 59 39.7   23.5i 07TB418   W84  C~3cb5      
2016 11  05.14793  01 33 20.05   +02 57 39.0   23.4r 07TB418   W84  C~3cb5      
2017 08  27.37075  01 39 46.743  +03 38 59.63  23.5r 07TB418   W84  C~4yH4      
2017 08  27.37212  01 39 46.747  +03 38 59.68  23.3i 07TB418   W84  C~4yH4      
2017 08  27.37349  01 39 46.745  +03 38 59.43  24.3g 07TB418   W84  C~4yH4      
2017 08  27.39283  01 39 46.703  +03 38 59.27  23.2z 07TB418   W84  C~4yH4      
2021 12  01.10123  01 46 41.251  +04 27 05.92  23.3G 07TB418   G37              
2021 12  01.15259  01 46 41.108  +04 27 05.45        07TB418   G37              
2021 12  01.20453  01 46 40.961  +04 27 05.08        07TB418   G37              

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     0.19       0.00    -0.10
     2   0.1090      0.00     0.09       0.00    -0.02
     3   0.1091      0.00    -0.05       0.00     0.01
     4   0.1145      0.00     0.01       0.00    -0.09
     5   0.1145      0.00    -0.08       0.00    -0.03
     6   0.1199      0.00     0.06       0.00    -0.15
     7   0.1201      0.00     0.09       0.00    -0.08
     8   0.1585      0.00    -0.33       0.00     0.68
     9   5.9360      0.00    -0.02       0.00    -0.12
    10   5.9361      0.00    -0.04       0.00     0.05
    11   5.9361      0.00     0.02       0.00    -0.02
    12   6.0971      0.00     0.01       0.00     0.15
    13   6.0971      0.00    -0.00       0.00    -0.04
    14   6.0972      0.00     0.16       0.00    -0.14
    15   6.9955      0.00    -0.03       0.00    -0.17
    16   6.9955      0.00     0.04       0.00    -0.04
    17   7.0528      0.00    -0.14       0.00    -0.05
    18   7.0664      0.00     0.04       0.00    -0.08
    19   8.0355      0.00     0.15       0.00     0.08
    20   8.8683      0.00     0.03       0.00     0.04
    21   8.8956      0.00     0.08       0.00     0.06
    22   8.9066      0.00     0.09       0.00     0.22
    23   9.0486      0.00     0.17       0.00    -0.09
    24   9.0704      0.00    -0.05       0.00    -0.05
    25   9.0895      0.00     0.06       0.00     0.12
    26   9.8977      0.00    -0.15       0.00     0.04
    27   9.8977      0.00    -0.05       0.00     0.12
    28   9.8977      0.00    -0.04       0.00    -0.11
    29   9.8978      0.00    -0.10       0.00     0.05
    30  14.1598      0.00    -0.19       0.00     0.20
    31  14.1600      0.00    -0.27       0.00     0.22
    32  14.1601      0.00    -0.38       0.00     0.35

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.

07TB418    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        57.625    57.625    57.626
ecceobj         0.407     0.407     0.407
incobj          6.538     6.538     6.538
qmin           32.464    32.879    31.266
qmax           92.102    91.973    99.290
amean          58.929    59.255    56.291
amin           56.102    55.326    48.740
amax           62.723    62.786    65.698
emean           0.434     0.430     0.411
emin            0.399     0.385     0.344
emax            0.468     0.465     0.511
imean           4.087     5.560     4.364
imin            2.705     4.349     0.373
imax            5.738     7.032     7.258
excite_mean     0.440     0.441     0.419
fracstop        1.000     1.000     1.000
cjmean          3.024     3.028     3.019

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
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       180.7     186.1     173.9
kozaiamp        180.0     180.0     180.0