Orbit Fit and Astrometric record for 13SM102

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: 13SM102   
# Created Sat Dec  4 02:12:00 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     55 observations of     55
# Arc:   5.13y
# First observation: 2013/09/02
#  Last observation: 2018/10/19
# Chi-squared of fit:    20.34 DOF:    104 RMS:  0.11
# Min/Max residuals:    -0.27    0.47
# Exact a, adot, b, bdot, g, gdot:
  1.562323E-05  2.906686E-02 -1.652350E-06 -4.751913E-03  2.617687E-02 -8.491198E-04
# Covariance matrix:
  2.0651E-13 -2.3326E-14 -3.8629E-16 -1.7440E-15  1.4967E-13  9.5963E-14
 -2.3326E-14  8.2049E-14  7.0556E-15 -1.3839E-14  5.0418E-14  6.2585E-13
 -3.8629E-16  7.0556E-15  7.1398E-14 -2.1450E-14  4.7957E-15  6.0507E-14
 -1.7440E-15 -1.3839E-14 -2.1450E-14  1.1821E-14 -1.2208E-14 -1.2096E-13
  1.4967E-13  5.0418E-14  4.7957E-15 -1.2208E-14  2.0495E-13  5.7121E-13
  9.5963E-14  6.2585E-13  6.0507E-14 -1.2096E-13  5.7121E-13  5.4857E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -6.687978    9.361696    0.499520   -0.102149   -0.871919  2456537.851688
# Heliocentric elements and errors
Epoch:              2456538.5000  =  2013/09/03
Mean Anomaly:          352.97341 +/-     0.012
Argument of Peri:      227.40555 +/-     0.022
Long of Asc Node:      154.05022 +/-     0.001
Inclination:            11.41598 +/-     0.000
Eccentricity:         0.25783866 +/-    0.0001
Semi-Major Axis:     52.40565842 +/-    0.0051
Time of Perihelion: 2459243.1287 +/-      20.5
Perihelion:          38.89345365 +/-    0.0051
Aphelion:            65.91786319 +/-    0.0073
Period (y)              379.3809 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.38346144 +/-    0.0006
Ecliptic Y            5.82484185 +/-    0.0001
Ecliptic Z           -4.44913354 +/-    0.0001
Ecliptic XDOT        -0.00064485 +/-    0.0000
Ecliptic YDOT         0.00297477 +/-    0.0000
Ecliptic ZDOT        -0.00048314 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.07705214 +/-    0.0006
Geocenter to KBO     38.20171179 +/-    0.0007
# Hcoef:  7.28

The following table shows the complete astrometric record for 13SM102. 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 (13SM102) followed by the observatory code and reference code for the source of the astrometry.

2013 09  02.35091  00 44 54.957  -02 26 26.95  23.6g 13SM102   W84  C~4yR1      
2013 09  28.12146  00 43 05.108  -02 40 48.06  24.0g 13SM102   W84  C~4yR1      
2013 09  28.12146  00 43 05.11   -02 40 48.1   24.4g 13SM102   W84  C~3clF      
2013 10  03.098796 00 42 42.08   -02 43 31.1   23.6g 13SM102   W84  C~35bY      
2013 10  04.15735  00 42 37.184  -02 44 05.08  23.2g 13SM102   W84  C~4yR1      
2013 10  04.15735  00 42 37.18   -02 44 05.0   23.6g 13SM102   W84  C~3clF      
2013 10  13.22535  00 41 55.250  -02 48 46.05  23.0i 13SM102   W84  C~4yR1      
2013 10  13.22535  00 41 55.25   -02 48 46.1   23.0i 13SM102   W84  C~3clF      
2013 10  29.05936  00 40 45.906  -02 55 53.51  23.6g 13SM102   W84  C~4yR1      
2013 10  29.05936  00 40 45.91   -02 55 53.5   24.0g 13SM102   W84  C~3clF      
2013 11  23.138576 00 39 20.34   -03 03 03.8   23.5g 13SM102   W84  C~35bY      
2013 11  23.13911  00 39 20.342  -03 03 03.78  23.6g 13SM102   W84  C~4yR1      
2013 11  23.14048  00 39 20.337  -03 03 03.92  23.0r 13SM102   W84  C~4yR1      
2013 11  23.14048  00 39 20.34   -03 03 03.9   23.1r 13SM102   W84  C~3clF      
2013 11  23.14185  00 39 20.329  -03 03 03.82  22.9i 13SM102   W84  C~4yR1      
2013 11  23.14185  00 39 20.33   -03 03 03.8   23.1i 13SM102   W84  C~3clF      
2014 10  02.30094  00 49 21.918  -02 18 39.00  23.1r 13SM102   W84  C~4yR1      
2014 10  02.30094  00 49 21.92   -02 18 39.0   23.2r 13SM102   W84  C~3clF      
2014 10  28.20281  00 47 24.367  -02 31 16.40  23.4r 13SM102   W84  C~4yR1      
2014 10  28.20281  00 47 24.37   -02 31 16.4   23.4r 13SM102   W84  C~3clF      
2014 11  15.08792  00 46 16.229  -02 37 18.98  22.5i 13SM102   W84  C~4yR1      
2014 11  17.053877 00 46 09.87   -02 37 48.0   22.5z 13SM102   W84  C~35bY      
2014 11  17.05440  00 46 09.878  -02 37 48.08  22.7z 13SM102   W84  C~4yR1      
2014 11  17.06151  00 46 09.850  -02 37 48.25  23.3r 13SM102   W84  C~4yR1      
2014 11  17.06151  00 46 09.85   -02 37 48.2   23.4r 13SM102   W84  C~3clF      
2014 11  28.09979  00 45 39.358  -02 39 49.20  22.2z 13SM102   W84  C~4yR1      
2015 12  05.08968  00 51 55.307  -02 16 25.81  22.9r 13SM102   W84  C~4yR1      
2015 12  05.08968  00 51 55.31   -02 16 25.8   23.2r 13SM102   W84  C~3clF      
2016 09  01.38391  01 04 38.826  -01 12 56.61  23.4g 13SM102   W84  C~4yR1      
2016 09  01.38391  01 04 38.83   -01 12 56.6   23.5g 13SM102   W84  C~3clF      
2016 10  23.16797  01 00 53.677  -01 40 30.24  22.9r 13SM102   W84  C~4yR1      
2016 10  23.16797  01 00 53.67   -01 40 30.2   23.3r 13SM102   W84  C~3clF      
2016 10  23.168831 01 00 53.65   -01 40 30.4   23.8g 13SM102   W84  C~35bY      
2016 10  23.16935  01 00 53.656  -01 40 30.37  24.1g 13SM102   W84  C~4yR1      
2016 10  29.22883  01 00 26.794  -01 43 08.20  22.2i 13SM102   W84  C~4yR1      
2016 10  29.22883  01 00 26.78   -01 43 07.9   22.8i 13SM102   W84  C~3clF      
2016 11  06.20801  00 59 53.439  -01 46 10.86  23.0i 13SM102   W84  C~4yR1      
2016 11  06.20801  00 59 53.44   -01 46 10.9   23.1i 13SM102   W84  C~3clF      
2016 11  07.20069  00 59 49.488  -01 46 31.45  23.2r 13SM102   W84  C~4yR1      
2016 11  07.20069  00 59 49.49   -01 46 31.5   23.4r 13SM102   W84  C~3clF      
2016 11  07.201551 00 59 49.47   -01 46 31.3   23.7g 13SM102   W84  C~35bY      
2016 11  07.20207  00 59 49.481  -01 46 31.56  24.2g 13SM102   W84  C~4yR1      
2017 08  28.294491 01 11 26.59   -00 46 10.3   23.4r 13SM102   W84  C~35bY      
2017 08  28.29502  01 11 26.587  -00 46 10.29  23.4r 13SM102   W84  C~4yR1      
2017 08  28.295868 01 11 26.58   -00 46 10.3   23.8g 13SM102   W84  C~35bY      
2017 08  28.29639  01 11 26.582  -00 46 10.30  23.7g 13SM102   W84  C~4yR1      
2017 08  28.366285 01 11 26.35   -00 46 12.5   22.9i 13SM102   W84  C~35bY      
2017 08  28.36681  01 11 26.349  -00 46 12.53  22.8i 13SM102   W84  C~4yR1      
2017 09  14.310741 01 10 25.99   -00 55 12.5   23.0z 13SM102   W84  C~35bY      
2017 09  14.31127  01 10 25.991  -00 55 12.53  22.8z 13SM102   W84  C~4yR1      
2018 09  21.29311  01 16 33.682  -00 34 13.21  22.5z 13SM102   W84  C~4yR1      
2018 10  10.27884  01 15 07.772  -00 44 33.74  23.2i 13SM102   W84  C~4yR1      
2018 10  10.28021  01 15 07.773  -00 44 33.71  23.0r 13SM102   W84  C~4yR1      
2018 10  10.28158  01 15 07.746  -00 44 33.88  23.7g 13SM102   W84  C~4yR1      
2018 10  19.15482  01 14 26.082  -00 49 03.36  22.5z 13SM102   W84  C~4yR1      

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     0.47       0.00    -0.07
     2   0.0706      0.00    -0.18       0.00    -0.05
     3   0.0706      0.00    -0.15       0.00    -0.09
     4   0.0842      0.00    -0.26       0.00    -0.27
     5   0.0871      0.00     0.03       0.00    -0.09
     6   0.0871      0.00     0.09       0.00    -0.17
     7   0.1119      0.00    -0.03       0.00     0.18
     8   0.1119      0.00    -0.03       0.00     0.13
     9   0.1553      0.00     0.04       0.00    -0.05
    10   0.1553      0.00    -0.02       0.00    -0.06
    11   0.2239      0.00     0.02       0.00     0.06
    12   0.2239      0.00     0.07       0.00     0.08
    13   0.2239      0.00     0.09       0.00    -0.03
    14   0.2239      0.00     0.05       0.00    -0.05
    15   0.2239      0.00    -0.02       0.00     0.07
    16   0.2239      0.00    -0.01       0.00     0.09
    17   1.0813      0.00    -0.04       0.00     0.13
    18   1.0813      0.00    -0.07       0.00     0.13
    19   1.1522      0.00     0.09       0.00    -0.01
    20   1.1522      0.00     0.05       0.00    -0.01
    21   1.2012      0.00    -0.04       0.00    -0.10
    22   1.2066      0.00    -0.09       0.00     0.19
    23   1.2066      0.00     0.06       0.00     0.12
    24   1.2066      0.00    -0.02       0.00     0.10
    25   1.2066      0.00    -0.02       0.00     0.05
    26   1.2368      0.00    -0.21       0.00     0.11
    27   2.2553      0.00     0.07       0.00    -0.03
    28   2.2553      0.00     0.02       0.00    -0.04
    29   2.9980      0.00     0.11       0.00    -0.11
    30   2.9980      0.00     0.05       0.00    -0.12
    31   3.1398      0.00     0.22       0.00     0.07
    32   3.1398      0.00     0.12       0.00     0.11
    33   3.1398      0.00    -0.12       0.00    -0.07
    34   3.1398      0.00     0.01       0.00    -0.03
    35   3.1564      0.00    -0.05       0.00     0.07
    36   3.1564      0.00     0.16       0.00    -0.23
    37   3.1783      0.00     0.06       0.00    -0.05
    38   3.1783      0.00     0.04       0.00    -0.01
    39   3.1810      0.00     0.02       0.00    -0.06
    40   3.1810      0.00    -0.01       0.00    -0.01
    41   3.1810      0.00    -0.23       0.00     0.16
    42   3.1810      0.00    -0.03       0.00    -0.09
    43   3.9862      0.00     0.09       0.00     0.00
    44   3.9862      0.00     0.07       0.00     0.03
    45   3.9862      0.00     0.00       0.00     0.04
    46   3.9862      0.00     0.06       0.00     0.06
    47   3.9864      0.00    -0.15       0.00    -0.04
    48   3.9864      0.00    -0.14       0.00    -0.05
    49   4.0327      0.00    -0.02       0.00     0.03
    50   4.0327      0.00     0.02       0.00     0.01
    51   5.0512      0.00    -0.07       0.00     0.13
    52   5.1032      0.00     0.03       0.00    -0.01
    53   5.1032      0.00     0.15       0.00     0.07
    54   5.1032      0.00    -0.16       0.00    -0.06
    55   5.1275      0.00     0.10       0.00    -0.05

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.

13SM102    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        52.791    52.791    52.792
ecceobj         0.263     0.263     0.263
incobj         11.389    11.389    11.389
qmin           38.141    38.138    38.118
qmax           67.203    67.229    67.123
amean          52.327    52.329    52.328
amin           51.827    51.817    51.836
amax           52.930    52.958    52.918
emean           0.257     0.257     0.257
emin            0.245     0.246     0.246
emax            0.270     0.269     0.269
imean          10.524    10.529    10.527
imin           10.056    10.056    10.056
imax           10.953    10.964    10.966
excite_mean     0.315     0.315     0.315
fracstop        1.000     1.000     1.000
cjmean          3.080     3.080     3.080

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       182.5     182.6     182.5
kozaiamp        180.0     179.9     180.0