Orbit Fit and Astrometric record for 14SJ378

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: 14SJ378   
# Created Mon Dec  6 02:12:40 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     44 observations of     44
# Arc:  19.29y
# First observation: 2001/09/20
#  Last observation: 2021/01/04
# Chi-squared of fit:    26.10 DOF:     82 RMS:  0.14
# Min/Max residuals:    -0.50    0.55
# Exact a, adot, b, bdot, g, gdot:
  1.873719E-05  4.324173E-02 -1.289924E-05 -3.157405E-02  3.730601E-02 -2.068410E-02
# Covariance matrix:
  4.8990E-13  7.8063E-11 -1.5443E-16 -3.1486E-11 -4.7785E-12  6.2630E-11
  7.8063E-11  2.5028E-05 -4.9388E-11 -1.0092E-05 -1.5967E-06  2.0075E-05
 -1.5443E-16 -4.9388E-11  4.8975E-13  1.9881E-11  3.1404E-12 -3.9613E-11
 -3.1486E-11 -1.0092E-05  1.9881E-11  4.0691E-06  6.4389E-07 -8.0944E-06
 -4.7785E-12 -1.5967E-06  3.1404E-12  6.4389E-07  1.0831E-07 -1.2810E-06
  6.2630E-11  2.0075E-05 -3.9613E-11 -8.0944E-06 -1.2810E-06  1.6102E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.296009  -25.165717   -0.378966    0.149736   -0.915545  2452172.794881
# Heliocentric elements and errors
Epoch:              2452172.5000  =  2001/09/20
Mean Anomaly:          353.44410 +/-     0.037
Argument of Peri:      214.75117 +/-     0.010
Long of Asc Node:      167.69173 +/-     0.001
Inclination:            37.13740 +/-     0.001
Eccentricity:         0.71210537 +/-    0.0000
Semi-Major Axis:     82.12845164 +/-    0.0000
Time of Perihelion: 2457123.2268 +/-      27.9
Perihelion:          23.64434018 +/-    0.0001
Aphelion:           140.61256310 +/-    0.0001
Period (y)              744.3011 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           24.94588801 +/-    0.0001
Ecliptic Y          -11.29445485 +/-    0.0000
Ecliptic Z            4.32968009 +/-    0.0000
Ecliptic XDOT         0.00032373 +/-    0.0000
Ecliptic YDOT         0.00335105 +/-    0.0000
Ecliptic ZDOT        -0.00253175 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   27.72400983 +/-    0.0001
Geocenter to KBO     26.80560560 +/-    0.0001
# Hcoef:  8.20

The following table shows the complete astrometric record for 14SJ378. 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 (14SJ378) followed by the observatory code and reference code for the source of the astrometry.

2001 09  20.294138 22 13 11.40   -01 04 22.1   22.4r 14SJ378   645  C~3xr6      
2001 09  20.294967 22 13 11.39   -01 04 22.1   21.9i 14SJ378   645  C~3xr6      
2001 09  20.297455 22 13 11.40   -01 04 22.0   22.9g 14SJ378   645  C~3xr6      
2009 10  16.188058 00 01 11.02   -08 31 54.8   21.7r 14SJ378   645  C~3xr6      
2009 10  16.188887 00 01 11.00   -08 31 54.9   21.2i 14SJ378   645  C~3xr6      
2014 09  16.265666 01 27 31.212  -12 00 45.89  21.7i 14SJ378   W84  C~3wpO      
2014 09  21.25556  01 27 01.67   -12 07 23.5         14SJ378   W84  C~3wpO      
2014 09  21.33288  01 27 01.18   -12 07 30.0   22.8V 14SJ378   W84  C~3wpO      
2014 09  21.37645  01 27 00.91   -12 07 33.4         14SJ378   W84  C~3wpO      
2014 10  22.25616  01 23 29.873  -12 42 30.03        14SJ378   304  C~3wpO      
2014 10  23.00486  01 23 24.633  -12 43 10.22        14SJ378   304  C~3wpO      
2014 12  12.150423 01 19 03.134  -13 00 19.43  21.5z 14SJ378   W84  C~3wpO      
2014 12  12.151777 01 19 03.131  -13 00 19.59  21.8i 14SJ378   W84  C~3wpO      
2015 10  17.194821 01 41 21.874  -13 17 15.57  22.6g 14SJ378   W84  C~3wpO      
2015 10  23.237240 01 40 38.577  -13 23 04.08  21.7z 14SJ378   W84  C~3wpO      
2015 11  02.171569 01 39 28.400  -13 31 03.68  22.6g 14SJ378   W84  C~3wpO      
2015 11  06.243444 01 39 00.571  -13 33 44.33  22.7g 14SJ378   W84  C~3wpO      
2015 11  18.230446 01 37 44.560  -13 39 25.18  21.8i 14SJ378   W84  C~3wpO      
2015 11  20.118073 01 37 33.659  -13 40 00.38  21.7z 14SJ378   W84  C~3wpO      
2016 09  07.362055 02 02 26.936  -13 02 19.32  22.2r 14SJ378   W84  C~3wpO      
2016 09  07.363432 02 02 26.933  -13 02 19.35  21.8i 14SJ378   W84  C~3wpO      
2016 09  07.364821 02 02 26.928  -13 02 19.49  23.1g 14SJ378   W84  C~3wpO      
2016 09  30.236453 02 00 27.977  -13 33 44.80  21.8i 14SJ378   W84  C~3wpO      
2016 09  30.237830 02 00 27.970  -13 33 44.93  21.9r 14SJ378   W84  C~3wpO      
2016 09  30.239208 02 00 27.963  -13 33 45.19  22.7g 14SJ378   W84  C~3wpO      
2017 11  23.135214 02 11 27.713  -14 48 37.48  22.0i 14SJ378   W84  C~3wpO      
2017 11  23.136603 02 11 27.698  -14 48 37.50  22.4r 14SJ378   W84  C~3wpO      
2017 11  27.083096 02 11 03.683  -14 49 19.11  22.0i 14SJ378   W84  C~3wpO      
2017 12  14.074508 02 09 38.719  -14 47 51.37  22.4r 14SJ378   W84  C~3wpO      
2017 12  14.075886 02 09 38.718  -14 47 51.45  22.1i 14SJ378   W84  C~3wpO      
2017 12  22.145423 02 09 11.130  -14 44 43.36  22.2r 14SJ378   W84  C~3wpO      
2017 12  23.138108 02 09 08.391  -14 44 14.07  23.0g 14SJ378   W84  C~3wpO      
2018 11  16.266349 02 29 17.151  -15 12 59.28  22.8g 14SJ378   W84  C~3wpO      
2020 10  14.51202  03 06 34.601  -15 23 55.89  22.0w 14SJ378   F51  C~4A4f      
2020 10  14.52370  03 06 34.531  -15 23 56.61  22.1w 14SJ378   F51  C~4A4f      
2020 10  14.53539  03 06 34.454  -15 23 57.33  22.1w 14SJ378   F51  C~4A4f      
2020 10  14.54705  03 06 34.388  -15 23 58.19  22.0w 14SJ378   F51  C~4A4f      
2020 10  23.48516  03 05 35.448  -15 33 42.34  22.1w 14SJ378   F51  C~4JA9      
2020 10  23.49601  03 05 35.378  -15 33 42.86  22.0w 14SJ378   F51  C~4JA9      
2020 10  23.50684  03 05 35.314  -15 33 43.67  21.9w 14SJ378   F51  C~4JA9      
2020 10  23.51766  03 05 35.238  -15 33 44.26  21.9w 14SJ378   F51  C~4JA9      
2021 01  04.27430  02 58 08.738  -15 43 19.13  22.2w 14SJ378   F51  C~4UE4      
2021 01  04.28530  02 58 08.708  -15 43 18.74  22.3w 14SJ378   F51  C~4UE4      
2021 01  04.29634  02 58 08.688  -15 43 18.22  22.2w 14SJ378   F51  C~4UE4      

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    -0.04       0.00    -0.12
     2   0.0000      0.00    -0.12       0.00    -0.07
     3   0.0000      0.00     0.23       0.00     0.17
     4   8.0709      0.00     0.05       0.00     0.02
     5   8.0709      0.00    -0.18       0.00    -0.04
     6  12.9883      0.00     0.08       0.00    -0.11
     7  13.0019      0.00     0.19       0.00     0.32
     8  13.0022      0.00     0.11       0.00    -0.10
     9  13.0023      0.00     0.14       0.00    -0.08
    10  13.0868      0.00    -0.44       0.00     0.55
    11  13.0889      0.00    -0.50       0.00     0.27
    12  13.2262      0.00     0.09       0.00    -0.01
    13  13.2262      0.00     0.10       0.00    -0.19
    14  14.0723      0.00    -0.03       0.00    -0.04
    15  14.0888      0.00     0.06       0.00    -0.10
    16  14.1160      0.00     0.11       0.00     0.11
    17  14.1272      0.00     0.13       0.00    -0.04
    18  14.1600      0.00    -0.02       0.00    -0.09
    19  14.1652      0.00     0.05       0.00    -0.09
    20  14.9653      0.00     0.02       0.00    -0.11
    21  14.9653      0.00     0.06       0.00    -0.02
    22  14.9653      0.00     0.07       0.00    -0.04
    23  15.0279      0.00     0.04       0.00     0.05
    24  15.0279      0.00     0.07       0.00     0.03
    25  15.0279      0.00     0.10       0.00    -0.13
    26  16.1748      0.00     0.02       0.00    -0.04
    27  16.1748      0.00    -0.07       0.00    -0.04
    28  16.1856      0.00    -0.07       0.00    -0.04
    29  16.2321      0.00     0.03       0.00     0.02
    30  16.2321      0.00     0.11       0.00    -0.09
    31  16.2542      0.00    -0.03       0.00    -0.06
    32  16.2569      0.00    -0.01       0.00    -0.05
    33  17.1553      0.00    -0.05       0.00     0.04
    34  19.0670      0.00    -0.08       0.00    -0.08
    35  19.0670      0.00    -0.01       0.00     0.01
    36  19.0671      0.00    -0.04       0.00     0.11
    37  19.0671      0.00     0.09       0.00     0.06
    38  19.0916      0.00    -0.12       0.00    -0.07
    39  19.0916      0.00    -0.02       0.00     0.07
    40  19.0916      0.00     0.16       0.00    -0.09
    41  19.0916      0.00     0.16       0.00    -0.03
    42  19.2908      0.00    -0.17       0.00     0.13
    43  19.2909      0.00    -0.13       0.00     0.02
    44  19.2909      0.00     0.05       0.00     0.03

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.

14SJ378    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        83.170    83.168    83.172
ecceobj         0.715     0.715     0.715
incobj         37.079    37.079    37.079
qmin           23.264    23.256    23.264
qmax          146.160   148.087   142.941
amean          82.477    80.646    79.167
amin           79.072    74.868    75.957
amax           85.825    87.640    83.761
emean           0.692     0.684     0.681
emin            0.657     0.648     0.646
emax            0.717     0.715     0.716
imean          38.333    38.504    38.413
imin           36.078    36.078    36.076
imax           40.567    40.664    40.673
excite_mean     0.930     0.925     0.922
fracstop        0.241     0.236     0.212
cjmean          2.239     2.241     2.239

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       217.7     218.0     218.5
kozaiamp          3.2       3.0       3.7