Orbit Fit and Astrometric record for 13SL106

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: 13SL106   
# Created Sat Mar 15 01:09:49 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     29 observations of     29
# Arc:  10.97y
# First observation: 2013/09/10
#  Last observation: 2024/08/30
# Chi-squared of fit:     9.11 DOF:     52 RMS:  0.10
# Min/Max residuals:    -0.24    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.476362E-05  2.117303E-02  2.223733E-06  2.253036E-03  2.272083E-02 -4.241532E-03
# Covariance matrix:
  1.5338E-13 -7.4675E-14  7.5132E-15 -6.3216E-15  6.3065E-14 -2.5944E-13
 -7.4675E-14  7.4902E-14 -8.9239E-15  7.3379E-15 -8.1768E-14  3.0026E-13
  7.5132E-15 -8.9239E-15  1.0147E-13 -1.4010E-14  1.6254E-14 -3.6475E-14
 -6.3216E-15  7.3379E-15 -1.4010E-14  4.0769E-15 -8.0320E-15  3.0837E-14
  6.3065E-14 -8.1768E-14  1.6254E-14 -8.0320E-15  3.6345E-13 -3.0024E-13
 -2.5944E-13  3.0026E-13 -3.6475E-14  3.0837E-14 -3.0024E-13  1.2663E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.579600  -20.007353   -0.126530    0.149244   -0.988682  2456545.573368
# Heliocentric elements and errors
Epoch:              2456546.5000  =  2013/09/11
Mean Anomaly:          292.55962 +/-     0.017
Argument of Peri:      144.59328 +/-     0.027
Long of Asc Node:      286.09318 +/-     0.001
Inclination:            10.32344 +/-     0.000
Eccentricity:         0.19885432 +/-    0.0000
Semi-Major Axis:     46.83954864 +/-    0.0054
Time of Perihelion: 2478481.3651 +/-      17.4
Perihelion:          37.52530215 +/-    0.0048
Aphelion:            56.15379513 +/-    0.0068
Period (y)              320.5732 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.87622615 +/-    0.0011
Ecliptic Y          -15.11007328 +/-    0.0004
Ecliptic Z            6.56602207 +/-    0.0002
Ecliptic XDOT         0.00035380 +/-    0.0000
Ecliptic YDOT         0.00258298 +/-    0.0000
Ecliptic ZDOT         0.00019234 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.00063232 +/-    0.0010
Geocenter to KBO     44.01264678 +/-    0.0012
# Hcoef:  6.93

The following table shows the complete astrometric record for 13SL106. 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 (13SL106) followed by the observatory code and reference code for the source of the astrometry.

2013 09  10.07259  22 33 12.131  +00 07 54.45  23.9g 13SL106   W84  C~55Nk      
2013 09  29.16983  22 31 57.55   -00 00 23.9   23.4r 13SL106   W84  C~3clG      
2013 09  29.17685  22 31 57.52   -00 00 24.2   23.3i 13SL106   W84  C~3clG      
2013 09  30.07173  22 31 54.34   -00 00 47.6   23.3r 13SL106   W84  C~3clG      
2013 09  30.07475  22 31 54.32   -00 00 47.5   22.8i 13SL106   W84  C~3clG      
2013 10  10.10198  22 31 21.343  -00 05 03.04  23.3r 13SL106   W84  C~55Nk      
2013 10  11.08899  22 31 18.37   -00 05 27.5   22.8z 13SL106   W84  C~3clG      
2013 10  12.036030 22 31 15.61   -00 05 50.6   22.8i 13SL106   W84  C~55Nk      
2013 11  23.05509  22 30 17.07   -00 18 24.9   23.4r 13SL106   W84  C~3clG      
2015 07  21.46550  22 45 11.20   +01 32 50.6   23.3i 13SL106   T09  C~8eOK      
2015 07  21.47906  22 45 11.15   +01 32 50.5   23.3i 13SL106   T09  C~8eOK      
2015 07  21.58484  22 45 10.83   +01 32 49.8   23.4i 13SL106   T09  C~8eOK      
2015 07  21.61447  22 45 10.74   +01 32 49.5   23.8i 13SL106   T09  C~8eOK      
2015 08  20.47769  22 43 21.59   +01 25 29.1   23.1z 13SL106   T09  C~8eOK      
2015 08  20.48576  22 43 21.56   +01 25 28.8   23.2z 13SL106   T09  C~8eOK      
2015 08  20.50462  22 43 21.48   +01 25 28.6   23.1z 13SL106   T09  C~8eOK      
2015 08  20.53574  22 43 21.35   +01 25 28.0   23.0z 13SL106   T09  C~8eOK      
2016 08  25.22778  22 47 22.33   +01 58 31.4   23.3r 13SL106   W84  C~3clG      
2016 08  26.21574  22 47 18.14   +01 58 09.3   24.0r 13SL106   W84  C~3clG      
2020 09  21.144810 23 03 29.238  +04 09 44.43  23.1G 13SL106   G37  C~49wW      
2020 09  21.187990 23 03 29.055  +04 09 43.13        13SL106   G37  C~49wW      
2021 08  08.328910 23 11 09.503  +05 02 25.52  23.8G 13SL106   G37  C~4xRB      
2021 08  08.375630 23 11 09.329  +05 02 24.93        13SL106   G37  C~4xRB      
2021 08  08.423920 23 11 09.156  +05 02 24.28        13SL106   G37  C~4xRB      
2022 08  27.242630 23 14 36.974  +05 33 22.85  23.4G 13SL106   G37  C~5nHc      
2022 08  27.289460 23 14 36.769  +05 33 21.66        13SL106   G37  C~5nHc      
2022 08  27.336160 23 14 36.574  +05 33 20.74        13SL106   G37  C~5nHc      
2024 08  30.383490 23 23 52.040  +06 45 37.49  22.2G 13SL106   G37  C~8Dcy      
2024 08  30.435980 23 23 51.827  +06 45 36.27        13SL106   G37  C~8Dcy      

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     0.05       0.00    -0.13
     2   0.0523      0.00     0.20       0.00     0.07
     3   0.0523      0.00     0.14       0.00    -0.05
     4   0.0548      0.00     0.06       0.00    -0.14
     5   0.0548      0.00    -0.08       0.00     0.04
     6   0.0822      0.00     0.07       0.00     0.02
     7   0.0849      0.00    -0.24       0.00    -0.07
     8   0.0875      0.00    -0.01       0.00     0.04
     9   0.2026      0.00     0.15       0.00     0.09
    10   1.8601      0.00     0.14       0.00     0.00
    11   1.8601      0.00     0.01       0.00     0.01
    12   1.8604      0.00     0.06       0.00     0.14
    13   1.8605      0.00     0.07       0.00     0.08
    14   1.9422      0.00    -0.18       0.00     0.04
    15   1.9423      0.00    -0.12       0.00    -0.10
    16   1.9423      0.00    -0.12       0.00     0.09
    17   1.9424      0.00    -0.10       0.00     0.14
    18   2.9573      0.00     0.19       0.00    -0.13
    19   2.9600      0.00    -0.05       0.00    -0.04
    20   7.0310      0.00    -0.04       0.00     0.03
    21   7.0311      0.00    -0.04       0.00    -0.05
    22   7.9104      0.00     0.11       0.00    -0.04
    23   7.9105      0.00     0.06       0.00     0.01
    24   7.9106      0.00     0.12       0.00     0.02
    25   8.9615      0.00    -0.07       0.00     0.13
    26   8.9616      0.00    -0.15       0.00    -0.05
    27   8.9617      0.00    -0.08       0.00     0.03
    28  10.9714      0.00    -0.09       0.00    -0.03
    29  10.9716      0.00     0.12       0.00    -0.09

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.

13SL106    quality flag:2

Type:       SCATNEAR  SCATEXTD  SCATEXTD

axisobj        47.096    47.095    47.096
ecceobj         0.199     0.199     0.199
incobj         10.318    10.318    10.318
qmin           36.725    36.714    36.725
qmax           57.624    57.653    57.540
amean          46.927    46.926    46.927
amin           46.510    46.522    46.508
amax           47.450    47.456    47.440
emean           0.199     0.199     0.199
emin            0.184     0.184     0.185
emax            0.215     0.216     0.215
imean          11.823    11.823    11.823
imin           11.211    11.211    11.216
imax           12.470    12.465    12.473
excite_mean     0.286     0.286     0.286
fracstop        1.000     1.000     1.000
cjmean          3.036     3.036     3.036

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       188.1     188.2     187.9
kozaiamp        180.0     180.0     180.0