Orbit Fit and Astrometric record for 13SR102

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: 13SR102   
# Created Fri Dec  3 02:11:59 2021
# Orbit generated from Bernstein formalism
# Fitting     39 observations of     39
# Arc:   5.00y
# First observation: 2013/09/30
#  Last observation: 2018/09/29
Preliminary a, adot, b, bdot, g, gdot:
  -0.000506   0.017197   0.000036  -0.001338   0.020642   0.000000
# Chi-squared of fit:     8.61 DOF:     72 RMS:  0.08
# Min/Max residuals:    -0.27    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.284611E-05  1.651616E-02 -9.155799E-07 -1.281103E-03  1.995929E-02 -7.175035E-03
# Covariance matrix:
  2.2194E-13 -1.8616E-13 -1.0181E-14  1.4247E-14 -1.3245E-14 -1.7607E-12
 -1.8616E-13  2.2684E-13  1.4813E-14 -2.0940E-14 -4.5375E-14  2.4174E-12
 -1.0181E-14  1.4813E-14  1.1144E-13 -3.4917E-14 -2.2299E-14  1.6249E-13
  1.4247E-14 -2.0940E-14 -3.4917E-14  1.7502E-14  3.6915E-14 -2.2790E-13
 -1.3245E-14 -4.5375E-14 -2.2299E-14  3.6915E-14  1.7223E-12  5.5742E-14
 -1.7607E-12  2.4174E-12  1.6249E-13 -2.2790E-13  5.5742E-14  2.7754E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -29.965821  -57.189239   -0.899184   -0.220375   -0.382404  2456565.504238
# Heliocentric elements and errors
Epoch:              2456560.5000  =  2013/09/25
Mean Anomaly:          298.24725 +/-     0.039
Argument of Peri:       10.12522 +/-     0.030
Long of Asc Node:       41.51596 +/-     0.001
Inclination:            29.92575 +/-     0.000
Eccentricity:         0.38492501 +/-    0.0003
Semi-Major Axis:     52.73251501 +/-    0.0185
Time of Perihelion: 2480552.6920 +/-       8.1
Perihelion:          32.43445136 +/-    0.0184
Aphelion:            73.03057866 +/-    0.0294
Period (y)              382.9358 +/-      0.20
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.51443981 +/-    0.0015
Ecliptic Y          -36.36086768 +/-    0.0024
Ecliptic Z          -25.02514697 +/-    0.0016
Ecliptic XDOT         0.00138836 +/-    0.0000
Ecliptic YDOT         0.00201669 +/-    0.0000
Ecliptic ZDOT         0.00033950 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   50.49087481 +/-    0.0021
Geocenter to KBO     50.10197384 +/-    0.0033
# Hcoef:  5.69

The following table shows the complete astrometric record for 13SR102. 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 (13SR102) followed by the observatory code and reference code for the source of the astrometry.

2013 09  30.00346  21 00 01.207  -48 24 29.88  22.7r 13SR102   W84  C~4yR2      
2013 09  30.00346  21 00 01.21   -48 24 29.9   22.8r 13SR102   W84  C~3clG      
2013 09  30.00658  21 00 01.188  -48 24 29.85  23.5g 13SR102   W84  C~4yR2      
2013 09  30.00658  21 00 01.19   -48 24 29.9   23.7g 13SR102   W84  C~3clG      
2014 09  04.06235  21 07 23.366  -48 15 36.70  22.3z 13SR102   W84  C~4yR2      
2014 09  15.04840  21 06 30.875  -48 14 04.93  23.6g 13SR102   W84  C~4yR2      
2014 09  15.04840  21 06 30.88   -48 14 04.9   23.7g 13SR102   W84  C~3clG      
2014 09  20.01585  21 06 09.908  -48 12 55.68  22.8r 13SR102   W84  C~4yR2      
2014 09  20.01585  21 06 09.91   -48 12 55.7   22.9r 13SR102   W84  C~3clG      
2014 09  24.035694 21 05 54.41   -48 11 47.3   22.7r 13SR102   W84  C~35bY      
2014 10  01.03333  21 05 30.861  -48 09 23.50  21.7z 13SR102   W84  C~4yR2      
2014 10  01.03333  21 05 30.86   -48 09 23.5   21.9z 13SR102   W84  C~3clG      
2014 10  01.03471  21 05 30.860  -48 09 23.56  22.5i 13SR102   W84  C~4yR2      
2014 10  01.03471  21 05 30.87   -48 09 23.5   23.0i 13SR102   W84  C~3clG      
2014 10  14.01409  21 04 59.992  -48 03 38.87  23.2g 13SR102   W84  C~4yR2      
2014 10  14.01409  21 04 59.99   -48 03 38.9   23.3g 13SR102   W84  C~3clG      
2014 10  14.016377 21 04 59.98   -48 03 38.7   22.6z 13SR102   W84  C~35bY      
2014 10  14.01690  21 04 59.994  -48 03 38.94  22.7z 13SR102   W84  C~4yR2      
2014 10  21.02548  21 04 50.82   -47 59 55.6   23.0g 13SR102   W84  C~3clG      
2014 10  21.05419  21 04 50.80   -47 59 54.7   22.4r 13SR102   W84  C~3clG      
2016 09  07.05637  21 18 18.970  -47 41 11.03  22.7i 13SR102   W84  C~4yR2      
2016 09  07.05774  21 18 18.968  -47 41 11.19  22.3r 13SR102   W84  C~4yR2      
2016 09  07.05774  21 18 18.96   -47 41 11.3   22.3r 13SR102   W84  C~3clG      
2016 09  07.06703  21 18 18.898  -47 41 11.14  21.8z 13SR102   W84  C~4yR2      
2016 09  07.17238  21 18 18.370  -47 41 10.62  23.0g 13SR102   W84  C~4yR2      
2016 09  07.17238  21 18 18.37   -47 41 10.6   23.2g 13SR102   W84  C~3clG      
2016 09  24.01934  21 17 02.450  -47 38 04.05  22.6r 13SR102   W84  C~4yR2      
2016 09  24.01934  21 17 02.45   -47 38 04.0   22.6r 13SR102   W84  C~3clG      
2016 09  24.02072  21 17 02.452  -47 38 04.01  23.2g 13SR102   W84  C~4yR2      
2016 09  24.02072  21 17 02.45   -47 38 04.0   23.2g 13SR102   W84  C~3clG      
2017 09  08.10212  21 23 53.426  -47 22 05.50  22.6z 13SR102   W84  C~4yR2      
2017 09  12.10008  21 23 33.508  -47 21 42.23  22.9g 13SR102   W84  C~4yR2      
2017 09  23.074884 21 22 44.19   -47 19 37.4   23.3g 13SR102   W84  C~35bY      
2017 09  23.07542  21 22 44.195  -47 19 37.35  23.2g 13SR102   W84  C~4yR2      
2017 11  01.05778  21 21 18.347  -47 01 37.75  22.3z 13SR102   W84  C~4yR2      
2018 09  15.23601  21 28 58.872  -47 01 02.93  22.5i 13SR102   W84  C~4yR2      
2018 09  15.23737  21 28 58.882  -47 01 02.65  22.4r 13SR102   W84  C~4yR2      
2018 09  15.23874  21 28 58.887  -47 01 02.67  23.2g 13SR102   W84  C~4yR2      
2018 09  29.11848  21 27 59.737  -46 57 54.38  22.4z 13SR102   W84  C~4yR2      

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    -0.02
     2   0.0000      0.02     0.07      -0.03    -0.05
     3   0.0000     -0.17    -0.05       0.09    -0.03
     4   0.0000     -0.17    -0.05       0.04    -0.08
     5   0.9283   4332.43    -0.01    -979.62    -0.05
     6   0.9584   3872.05    -0.04    -712.03    -0.08
     7   0.9584   3872.10     0.02    -712.02    -0.07
     8   0.9720   3699.09    -0.04    -574.91    -0.02
     9   0.9720   3699.08    -0.05    -574.88     0.01
    10   0.9830   3576.99     0.06    -457.47     0.13
    11   1.0021   3404.80    -0.04    -241.71     0.02
    12   1.0021   3404.81    -0.03    -241.71     0.01
    13   1.0021   3404.89     0.08    -241.74    -0.06
    14   1.0021   3404.78    -0.03    -241.76    -0.08
    15   1.0377   3231.53    -0.00     187.71     0.15
    16   1.0377   3231.50    -0.03     187.69     0.12
    17   1.0377   3231.48    -0.04     187.91     0.27
    18   1.0377   3231.53     0.01     187.63    -0.02
    19   1.0569   3220.86     0.04     428.98     0.08
    20   1.0569   3220.97     0.10     429.90    -0.01
    21   2.9379  11226.56     0.02   -1452.52     0.06
    22   2.9379  11226.37    -0.12   -1452.73    -0.19
    23   2.9379  11226.48     0.00   -1452.66    -0.11
    24   2.9379  11225.85    -0.20   -1452.35    -0.02
    25   2.9382  11221.11    -0.05   -1449.81    -0.06
    26   2.9382  11221.10    -0.05   -1449.83    -0.08
    27   2.9843  10579.83     0.07    -986.15     0.09
    28   2.9843  10579.81     0.05    -986.19     0.04
    29   2.9843  10579.83     0.11    -986.15     0.05
    30   2.9843  10579.85     0.13    -986.16     0.03
    31   3.9400  14807.46    -0.04   -1714.62     0.01
    32   3.9510  14629.95    -0.00   -1612.75    -0.07
    33   3.9810  14216.50    -0.04   -1299.40    -0.03
    34   3.9810  14216.57     0.04   -1299.37    -0.02
    35   4.0878  13831.31     0.03      39.71    -0.02
    36   4.9589  18187.19    -0.27   -1819.82    -0.05
    37   4.9589  18187.40     0.00   -1819.60     0.12
    38   4.9589  18187.44     0.10   -1819.64     0.04
    39   4.9969  17708.96     0.19   -1397.92     0.02

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.

13SR102    quality flag:2

Type:        7:3EEEE   7:3EEEE  SCATNEAR
Type:        7:3EEII   7:3EEII          
Type:        7:3IIII   7:3IIII          

axisobj        52.996    53.048    52.944
ecceobj         0.386     0.387     0.386
incobj         29.958    29.958    29.958
qmin           32.208    32.217    32.202
qmax           74.629    74.639    74.610
amean          52.967    52.968    52.967
amin           52.431    52.426    52.363
amax           53.689    53.638    53.703
emean           0.300     0.300     0.290
emin            0.239     0.238     0.210
emax            0.392     0.392     0.392
imean          32.168    32.179    32.418
imin           29.199    29.200    29.197
imax           33.943    33.971    34.517
excite_mean     0.613     0.613     0.612
fracstop        1.000     1.000     1.000
cjmean          2.706     2.706     2.706

libcent 0       177.2     178.5    -180.0
libamp  0        44.8      46.6    -180.0
libcent 1       193.9     194.6    -180.0
libamp  1        66.6      68.4    -180.0
libcent 2       208.3     209.9    -180.0
libamp  2       102.6     103.3    -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        66.1      64.9      72.0
kozaiamp        180.0     180.0      68.3