Orbit Fit and Astrometric record for 13SG102

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: 13SG102   
# Created Wed Dec 25 02:09:33 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     59 observations of     59
# Arc:   8.98y
# First observation: 2013/09/05
#  Last observation: 2022/08/27
# Chi-squared of fit:    22.18 DOF:    112 RMS:  0.11
# Min/Max residuals:    -0.32    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.536975E-05  2.281626E-02 -8.162308E-07 -2.677164E-03  2.387625E-02 -9.820682E-05
# Covariance matrix:
  1.4442E-13 -5.2303E-14 -4.7645E-15  3.6698E-15  2.3500E-14 -1.7323E-13
 -5.2303E-14  2.9132E-14  3.8476E-15 -2.7374E-15  5.5235E-15  1.2822E-13
 -4.7645E-15  3.8476E-15  9.1431E-14 -2.0982E-14  3.0099E-15  2.2088E-14
  3.6698E-15 -2.7374E-15 -2.0982E-14  6.7193E-15 -1.1947E-15 -1.5533E-14
  2.3500E-14  5.5235E-15  3.0099E-15 -1.1947E-15  1.0689E-13  5.1428E-14
 -1.7323E-13  1.2822E-13  2.2088E-14 -1.5533E-14  5.1428E-14  7.2669E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    4.485996  -12.411123    0.091072    0.078696   -1.002095  2456540.632498
# Heliocentric elements and errors
Epoch:              2456540.5000  =  2013/09/05
Mean Anomaly:          295.12123 +/-     0.264
Argument of Peri:      212.45043 +/-     0.271
Long of Asc Node:      200.59480 +/-     0.001
Inclination:             7.98078 +/-     0.000
Eccentricity:         0.00912923 +/-    0.0000
Semi-Major Axis:     43.04798000 +/-    0.0024
Time of Perihelion: 2475132.5682 +/-      76.0
Perihelion:          42.65498517 +/-    0.0028
Aphelion:            43.44097484 +/-    0.0028
Period (y)              282.4473 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.74053008 +/-    0.0006
Ecliptic Y           -9.27591999 +/-    0.0001
Ecliptic Z            3.27583303 +/-    0.0000
Ecliptic XDOT         0.00056861 +/-    0.0000
Ecliptic YDOT         0.00255130 +/-    0.0000
Ecliptic ZDOT        -0.00030679 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.88410052 +/-    0.0005
Geocenter to KBO     41.88265365 +/-    0.0006
# Hcoef:  6.91

The following table shows the complete astrometric record for 13SG102. 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 (13SG102) followed by the observatory code and reference code for the source of the astrometry.

2013 09  05.13172  23 07 20.929  -00 46 18.28  22.9g 13SG102   W84  C~4yR0      
2013 09  10.28438  23 06 58.555  -00 48 47.04  24.3g 13SG102   W84  C~4yR0      
2013 09  30.11758  23 05 35.247  -00 58 31.80  23.2r 13SG102   W84  C~4yR0      
2013 09  30.11904  23 05 35.242  -00 58 31.89  22.8i 13SG102   W84  C~4yR0      
2013 10  11.10096  23 04 54.061  -01 03 44.03  22.5z 13SG102   W84  C~4yR0      
2013 10  12.08214  23 04 50.648  -01 04 10.82  22.9i 13SG102   W84  C~4yR0      
2013 10  12.082998 23 04 50.63   -01 04 10.6   22.5z 13SG102   W84  C~352C      
2013 10  12.08353  23 04 50.646  -01 04 10.91  23.0z 13SG102   W84  C~4yR0      
2013 10  13.12418  23 04 47.08   -01 04 39.1   22.8i 13SG102   W84  C~3clF      
2013 11  23.07182  23 03 24.826  -01 18 12.34  23.1r 13SG102   W84  C~4yR0      
2015 11  06.02411  23 13 44.125  -00 30 21.37  23.2r 13SG102   W84  C~4yR0      
2015 11  06.02549  23 13 44.137  -00 30 21.56  22.7i 13SG102   W84  C~4yR0      
2015 11  06.02686  23 13 44.135  -00 30 21.37  24.1g 13SG102   W84  C~4yR0      
2016 08  01.44255  23 24 40.54   +00 33 04.3   23.6z 13SG102   T09  C~7gpX      
2016 08  01.46799  23 24 40.44   +00 33 03.6   23.6z 13SG102   T09  C~7gpX      
2016 08  01.48420  23 24 40.39   +00 33 03.5   23.2z 13SG102   T09  C~7gpX      
2016 08  01.51671  23 24 40.29   +00 33 03.0   23.4z 13SG102   T09  C~7gpX      
2016 08  01.53842  23 24 40.23   +00 33 02.6   23.2z 13SG102   T09  C~7gpX      
2016 08  01.56281  23 24 40.16   +00 33 02.3   23.5z 13SG102   T09  C~7gpX      
2016 08  09.44578  23 24 14.40   +00 30 34.1   23.1y 13SG102   T09  C~7gpX      
2016 08  09.45746  23 24 14.37   +00 30 33.8   22.8y 13SG102   T09  C~7gpX      
2016 08  09.47657  23 24 14.29   +00 30 33.4   22.8y 13SG102   T09  C~7gpX      
2016 08  09.50404  23 24 14.21   +00 30 32.9   23.0y 13SG102   T09  C~7gpX      
2016 08  09.50679  23 24 14.18   +00 30 32.8   23.5y 13SG102   T09  C~7gpX      
2016 08  09.52629  23 24 14.12   +00 30 32.3   23.4y 13SG102   T09  C~7gpX      
2016 08  09.54843  23 24 14.04   +00 30 31.9   23.2y 13SG102   T09  C~7gpX      
2016 08  14.26928  23 23 57.122  +00 28 50.95  22.7z 13SG102   W84  C~4yR0      
2016 09  07.37087  23 22 18.90   +00 18 24.8   23.4r 13SG102   T09  C~7gpX      
2016 09  07.39898  23 22 18.76   +00 18 24.1   23.4r 13SG102   T09  C~7gpX      
2016 09  07.44284  23 22 18.58   +00 18 22.8   23.4r 13SG102   T09  C~7gpX      
2016 09  07.47602  23 22 18.43   +00 18 21.9   23.2r 13SG102   T09  C~7gpX      
2016 09  26.13353  23 20 58.322  +00 09 08.45  23.5r 13SG102   W84  C~4yR0      
2016 09  26.13489  23 20 58.309  +00 09 08.44  22.8i 13SG102   W84  C~4yR0      
2016 09  26.13627  23 20 58.303  +00 09 08.53  24.7g 13SG102   W84  C~4yR0      
2016 09  30.12434  23 20 41.812  +00 07 09.23  22.4z 13SG102   W84  C~4yR0      
2017 09  13.36941  23 26 57.09   +00 37 35.3   22.6y 13SG102   T09  C~7xNq      
2017 09  13.38367  23 26 57.02   +00 37 34.8   22.7y 13SG102   T09  C~7xNq      
2017 09  13.40105  23 26 56.96   +00 37 34.3   22.6y 13SG102   T09  C~7xNq      
2017 09  13.41536  23 26 56.88   +00 37 33.8   22.5y 13SG102   T09  C~7xNq      
2017 09  27.27630  23 25 57.45   +00 30 38.5   22.3z 13SG102   T09  C~7bIA      
2017 09  27.30436  23 25 57.33   +00 30 37.7   22.6z 13SG102   T09  C~7bIA      
2017 09  27.31840  23 25 57.27   +00 30 37.3   22.6z 13SG102   T09  C~7bIA      
2017 09  27.33246  23 25 57.21   +00 30 36.9   22.6z 13SG102   T09  C~7bIA      
2017 09  27.34659  23 25 57.15   +00 30 36.5   22.2z 13SG102   T09  C~7bIA      
2017 10  11.187257 23 25 01.92   +00 23 48.6   22.9i 13SG102   W84  C~352C      
2017 10  11.18778  23 25 01.935  +00 23 48.61  22.2i 13SG102   W84  C~4yR0      
2017 11  08.06827  23 23 38.812  +00 12 16.96  24.3g 13SG102   W84  C~4yR0      
2017 11  08.069120 23 23 38.82   +00 12 16.8   23.7r 13SG102   W84  C~352C      
2017 11  08.06964  23 23 38.818  +00 12 16.71  23.6r 13SG102   W84  C~4yR0      
2017 11  09.03923  23 23 36.852  +00 11 57.43  24.6g 13SG102   W84  C~4yR0      
2017 11  09.04060  23 23 36.861  +00 11 57.68  23.7r 13SG102   W84  C~4yR0      
2017 11  15.052847 23 23 26.31   +00 10 08.5   22.9i 13SG102   W84  C~352C      
2017 11  15.05337  23 23 26.309  +00 10 08.50  22.8i 13SG102   W84  C~4yR0      
2018 09  17.27443  23 31 44.684  +00 57 45.28  23.0r 13SG102   W84  C~4yR0      
2018 09  17.27580  23 31 44.673  +00 57 45.34  23.5g 13SG102   W84  C~4yR0      
2018 09  19.19888  23 31 36.344  +00 56 47.67  22.6z 13SG102   W84  C~4yR0      
2022 08  27.385970 23 53 30.158  +02 35 19.85  23.4G 13SG102   G37  C~5nHc      
2022 08  27.419490 23 53 30.029  +02 35 18.96        13SG102   G37  C~5nHc      
2022 08  27.454860 23 53 29.885  +02 35 18.11        13SG102   G37  C~5nHc      

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     0.03       0.00    -0.20
     2   0.0141      0.00    -0.06       0.00    -0.26
     3   0.0684      0.00     0.07       0.00     0.05
     4   0.0684      0.00     0.09       0.00     0.00
     5   0.0985      0.00     0.02       0.00    -0.03
     6   0.1012      0.00    -0.03       0.00    -0.00
     7   0.1012      0.00    -0.26       0.00     0.24
     8   0.1012      0.00     0.01       0.00    -0.05
     9   0.1040      0.00     0.02       0.00    -0.03
    10   0.2161      0.00    -0.02       0.00     0.02
    11   2.1681      0.00    -0.02       0.00     0.04
    12   2.1681      0.00     0.20       0.00    -0.12
    13   2.1681      0.00     0.21       0.00     0.10
    14   2.9057      0.00     0.22       0.00     0.11
    15   2.9058      0.00    -0.09       0.00    -0.16
    16   2.9058      0.00    -0.09       0.00     0.02
    17   2.9059      0.00    -0.06       0.00     0.07
    18   2.9060      0.00     0.06       0.00     0.04
    19   2.9060      0.00     0.15       0.00     0.16
    20   2.9276      0.00    -0.08       0.00     0.14
    21   2.9277      0.00     0.09       0.00     0.08
    22   2.9277      0.00    -0.09       0.00     0.07
    23   2.9278      0.00     0.17       0.00     0.14
    24   2.9278      0.00    -0.13       0.00     0.09
    25   2.9278      0.00     0.01       0.00    -0.01
    26   2.9279      0.00    -0.01       0.00     0.04
    27   2.9408      0.00     0.18       0.00     0.01
    28   3.0068      0.00     0.05       0.00    -0.17
    29   3.0069      0.00    -0.20       0.00    -0.06
    30   3.0070      0.00    -0.01       0.00    -0.10
    31   3.0071      0.00    -0.07       0.00    -0.04
    32   3.0582      0.00     0.13       0.00    -0.02
    33   3.0582      0.00     0.02       0.00     0.01
    34   3.0582      0.00     0.02       0.00     0.14
    35   3.0691      0.00     0.04       0.00    -0.01
    36   4.0226      0.00    -0.06       0.00     0.17
    37   4.0226      0.00    -0.16       0.00     0.10
    38   4.0226      0.00     0.09       0.00     0.11
    39   4.0227      0.00    -0.16       0.00     0.03
    40   4.0606      0.00     0.00       0.00    -0.06
    41   4.0607      0.00    -0.01       0.00    -0.02
    42   4.0607      0.00    -0.01       0.00     0.01
    43   4.0608      0.00    -0.01       0.00     0.03
    44   4.0608      0.00    -0.00       0.00     0.05
    45   4.0987      0.00    -0.01       0.00    -0.22
    46   4.0987      0.00     0.25       0.00    -0.19
    47   4.1750      0.00    -0.13       0.00     0.16
    48   4.1751      0.00     0.02       0.00     0.01
    49   4.1751      0.00     0.01       0.00    -0.07
    50   4.1777      0.00    -0.06       0.00    -0.24
    51   4.1777      0.00     0.12       0.00     0.04
    52   4.1942      0.00     0.08       0.00    -0.01
    53   4.1942      0.00     0.08       0.00     0.00
    54   5.0326      0.00    -0.01       0.00    -0.01
    55   5.0326      0.00    -0.08       0.00     0.09
    56   5.0378      0.00    -0.32       0.00    -0.05
    57   8.9754      0.00     0.03       0.00    -0.02
    58   8.9755      0.00     0.07       0.00    -0.07
    59   8.9756      0.00    -0.00       0.00    -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.

13SG102    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.265    43.265    43.265
ecceobj         0.012     0.012     0.012
incobj          7.967     7.967     7.967
qmin           41.663    41.650    41.664
qmax           44.727    44.726    44.725
amean          43.135    43.135    43.135
amin           42.802    42.802    42.803
amax           43.468    43.468    43.469
emean           0.016     0.016     0.016
emin            0.001     0.001     0.001
emax            0.030     0.030     0.030
imean           8.827     8.827     8.827
imin            8.199     8.199     8.199
imax            9.506     9.506     9.507
excite_mean     0.154     0.154     0.154
fracstop        1.000     1.000     1.000
cjmean          3.063     3.063     3.063

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       180.4     180.3     180.3
kozaiamp        180.0     180.0     180.0