Orbit Fit and Astrometric record for 13SJ100

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: 13SJ100   
# Created Mon Dec 18 02:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   41 observations of   41
# Arc:   1.46y
# First observation: 2013/08/04
#  Last observation: 2015/01/18
Preliminary a, adot, b, bdot, g, gdot:
  -0.000120   0.020532  -0.000004  -0.000128   0.022299   0.000000
# Chi-squared of fit:    17.09 DOF:   76 RMS:  0.11
# Min/Max residuals:    -0.42    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.483268E-05  2.048012E-02  6.278081E-07 -1.269519E-04  2.234699E-02  8.959465E-07
# Covariance matrix:
  2.0106E-13  5.0783E-14  3.8909E-15 -5.4385E-15  2.5672E-13  1.3343E-11
  5.0783E-14  2.5333E-13  4.0240E-15 -5.6152E-15  2.6544E-13  1.3753E-11
  3.8909E-15  4.0240E-15  8.0227E-14 -7.4495E-14  8.2605E-15  4.3087E-13
 -5.4385E-15 -5.6152E-15 -7.4495E-14  1.2420E-13 -1.1690E-14 -6.9092E-13
  2.5672E-13  2.6544E-13  8.2605E-15 -1.1690E-14  5.4602E-13  2.9041E-11
  1.3343E-11  1.3753E-11  4.3087E-13 -6.9092E-13  2.9041E-11  1.9181E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.950903   13.235196    0.891116   -0.025146   -0.488353  2456508.998978
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:          212.14599 +/-     2.372
Argument of Peri:       52.21400 +/-     2.368
Long of Asc Node:      110.23636 +/-     0.019
Inclination:             2.94789 +/-     0.000
Eccentricity:         0.04294382 +/-    0.0010
Semi-Major Axis:     43.63850413 +/-    0.0046
Time of Perihelion: 2499745.2938 +/-     693.7
Perihelion:          41.76449988 +/-    0.0456
Aphelion:            45.51250838 +/-    0.0457
Period (y)              288.2790 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           44.18221364 +/-    0.0014
Ecliptic Y            9.47925564 +/-    0.0003
Ecliptic Z           -2.30360273 +/-    0.0001
Ecliptic XDOT        -0.00058136 +/-    0.0000
Ecliptic YDOT         0.00244148 +/-    0.0000
Ecliptic ZDOT        -0.00001540 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.24633549 +/-    0.0014
Geocenter to KBO     44.74875457 +/-    0.0015
# Hcoef:  7.69

The following table shows the complete astrometric record for 13SJ100. 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 (13SJ100) followed by the observatory code and reference code for the source of the astrometry.

2013 08  04.49820  00 53 18.023  +02 30 20.30  24.2r 13SJ100   568  C~2NKL      
2013 08  05.47365  00 53 16.493  +02 30 06.96  24.1r 13SJ100   568  C~2NKL      
2013 08  05.51257  00 53 16.416  +02 30 06.43  24.0r 13SJ100   568  C~2NKL      
2013 08  08.45262  00 53 11.305  +02 29 23.27  23.8r 13SJ100   568  C~2NKL      
2013 08  31.53287  00 52 11.671  +02 21 53.25        13SJ100   568  C~2NKL      
2013 08  31.57657  00 52 11.510  +02 21 51.98  23.1r 13SJ100   568  C~2NKL      
2013 09  01.42327  00 52 08.755  +02 21 32.48  24.4r 13SJ100   568  C~2NKL      
2013 09  01.46210  00 52 08.629  +02 21 31.61  24.3r 13SJ100   568  C~2NKL      
2013 09  05.40278  00 51 55.245  +02 19 57.53  24.1r 13SJ100   568  C~2NKL      
2013 09  05.44158  00 51 55.097  +02 19 56.61  24.2r 13SJ100   568  C~2NKL      
2013 09  29.32343  00 50 22.118  +02 09 35.49  23.8r 13SJ100   568  C~2NKL      
2013 09  29.37258  00 50 21.917  +02 09 34.14  24.0r 13SJ100   568  C~2NKL      
2013 09  29.41164  00 50 21.742  +02 09 33.02  24.3r 13SJ100   568  C~2NKL      
2013 10  02.40208  00 50 09.226  +02 08 12.86  23.7r 13SJ100   568  C~2NKL      
2013 10  03.35740  00 50 05.224  +02 07 47.43  23.9r 13SJ100   568  C~2NKL      
2013 10  03.41811  00 50 04.969  +02 07 45.64  24.3r 13SJ100   568  C~2NKL      
2013 10  04.47974  00 50 00.496  +02 07 17.09  23.6r 13SJ100   568  C~2NKL      
2013 10  09.46022  00 49 39.528  +02 05 05.15  24.0r 13SJ100   568  C~2NKL      
2013 10  09.46522  00 49 39.501  +02 05 04.80  24.3r 13SJ100   568  C~2NKL      
2013 11  27.25962  00 46 48.224  +01 48 39.88  24.0r 13SJ100   568  C~2NKL      
2013 11  27.30410  00 46 48.117  +01 48 39.43  24.2r 13SJ100   568  C~2NKL      
2013 12  05.21780  00 46 32.395  +01 47 28.99  24.1r 13SJ100   568  C~2NKL      
2014 01  02.22061  00 46 16.697  +01 47 46.07  24.0r 13SJ100   568  C~2NKL      
2014 06  25.57325  00 57 34.461  +02 59 35.39  24.0r 13SJ100   568  C~2NKL      
2014 06  26.57215  00 57 36.120  +02 59 41.27  24.1r 13SJ100   568  C~2NKL      
2014 07  23.55975  00 57 50.830  +02 59 17.48  24.6r 13SJ100   568  C~2NKL      
2014 07  27.53892  00 57 48.103  +02 58 43.76  24.9r 13SJ100   568  C~2NKL      
2014 08  24.49378  00 56 56.052  +02 51 34.98  24.5r 13SJ100   568  C~2NKL      
2014 08  28.46592  00 56 44.481  +02 50 10.80  24.2r 13SJ100   568  C~2NKL      
2014 10  23.31109  00 53 06.393  +02 26 30.89  24.1r 13SJ100   568  C~2NKL      
2014 10  23.31499  00 53 06.349  +02 26 30.69  23.9r 13SJ100   568  C~2NKL      
2014 10  23.31888  00 53 06.336  +02 26 30.63  23.9r 13SJ100   568  C~2NKL      
2014 10  27.27777  00 52 50.547  +02 24 56.81  24.0r 13SJ100   568  C~2NKL      
2014 10  27.28165  00 52 50.522  +02 24 56.66  24.6r 13SJ100   568  C~2NKL      
2014 10  27.28553  00 52 50.510  +02 24 56.75  24.0r 13SJ100   568  C~2NKL      
2014 11  24.25948  00 51 16.990  +02 16 17.22  24.1r 13SJ100   568  C~2NKL      
2014 11  24.29560  00 51 16.904  +02 16 16.72  24.2r 13SJ100   568  C~2NKL      
2014 11  25.28967  00 51 14.381  +02 16 04.32  24.6r 13SJ100   568  C~2NKL      
2014 12  17.27972  00 50 36.773  +02 13 31.43  24.0r 13SJ100   568  C~2NKL      
2015 01  17.24876  00 50 50.890  +02 17 13.54  24.1r 13SJ100   568  C~2NKL      
2015 01  18.25083  00 50 52.690  +02 17 29.13  23.9r 13SJ100   568  C~2NKL      

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    -0.07       0.00    -0.15
  2   0.0027    -26.31     0.21      -3.41    -0.07
  3   0.0028    -27.58     0.06      -3.45     0.01
  4   0.0108   -114.91    -0.26     -13.55     0.22
  5   0.0740  -1113.20     0.15     -81.90     0.12
  6   0.0741  -1115.91    -0.16     -82.13    -0.03
  7   0.0765  -1161.54     0.04     -84.10     0.08
  8   0.0766  -1163.62     0.12     -84.17     0.08
  9   0.0873  -1385.00    -0.02     -93.09    -0.07
 10   0.0875  -1387.40    -0.16     -93.08     0.01
 11   0.1528  -2913.01    -0.04    -124.93     0.00
 12   0.1530  -2916.31     0.05    -125.00    -0.07
 13   0.1531  -2919.16    -0.10    -125.01    -0.08
 14   0.1613  -3123.22    -0.07    -126.09     0.06
 15   0.1639  -3188.39     0.11    -126.24     0.18
 16   0.1641  -3192.61     0.11    -126.41    -0.00
 17   0.1670  -3265.50     0.03    -126.70    -0.13
 18   0.1806  -3606.47     0.17    -126.30     0.10
 19   0.1806  -3606.98     0.01    -126.47    -0.06
 20   0.3142  -6357.25    -0.07     -36.85     0.04
 21   0.3143  -6358.91    -0.09     -36.64     0.08
 22   0.3360  -6603.71     0.13      -9.94     0.02
 23   0.4127  -6814.15    -0.17      97.32    -0.42
 24   0.8900   4222.59    -0.07     130.61     0.05
 25   0.8927   4247.79    -0.07     126.42    -0.21
 26   0.9666   4441.88     0.03      19.25    -0.08
 27   0.9775   4391.14     0.07       3.94    -0.08
 28   1.0541   3505.91    -0.01     -89.86     0.04
 29   1.0649   3313.43     0.00    -100.41     0.14
 30   1.2178   -249.58     0.23    -143.92    -0.05
 31   1.2178   -250.27    -0.20    -143.85     0.01
 32   1.2179   -250.47    -0.15    -143.83     0.03
 33   1.2287   -504.96     0.13    -138.59     0.06
 34   1.2287   -505.36    -0.03    -138.59     0.06
 35   1.2287   -505.50     0.09    -138.43     0.20
 36   1.3053  -1998.97    -0.18     -73.77     0.00
 37   1.3054  -2000.35    -0.05     -73.73    -0.09
 38   1.3081  -2040.02     0.11     -70.49     0.06
 39   1.3683  -2618.95     0.04       7.30    -0.05
 40   1.4531  -2337.71     0.05     129.92    -0.05
 41   1.4559  -2306.79    -0.00     133.82    -0.01

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.

13SJ100    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.859    43.869    43.851
ecceobj         0.037     0.040     0.036
incobj          2.948     2.947     2.948
qmin           40.768    40.606    40.833
qmax           46.675    46.863    46.595
amean          43.619    43.629    43.611
amin           43.276    43.293    43.270
amax           43.972    43.975    43.958
emean           0.044     0.047     0.042
emin            0.026     0.029     0.025
emax            0.062     0.066     0.060
imean           1.582     1.582     1.582
imin            0.768     0.760     0.769
imax            2.255     2.265     2.254
excite_mean     0.052     0.055     0.051
fracstop        1.000     1.000     1.000
cjmean          3.094     3.093     3.094

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       189.6     189.1     190.0
kozaiamp        180.0     179.9     179.9