Orbit Fit and Astrometric record for 14SA374

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: 14SA374   
# Created Wed Dec  8 02:12:44 2021
# Orbit generated from Bernstein formalism
# Fitting     41 observations of     41
# Arc:   4.08y
# First observation: 2014/09/27
#  Last observation: 2018/10/28
Preliminary a, adot, b, bdot, g, gdot:
   0.000154   0.020039   0.000009   0.007286   0.022870   0.000000
# Chi-squared of fit:    13.04 DOF:     76 RMS:  0.10
# Min/Max residuals:    -0.32    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.409459E-05  2.034397E-02  4.650933E-06  7.423237E-03  2.311470E-02  2.680742E-03
# Covariance matrix:
  1.2683E-13 -7.9575E-14  3.7876E-15 -2.5840E-14  3.6444E-14 -7.9571E-13
 -7.9575E-14  1.5532E-13 -4.1229E-14  7.1633E-14  4.5514E-14  2.1328E-12
  3.7876E-15 -4.1229E-14  9.6955E-14 -5.4808E-14 -3.3849E-14 -6.5995E-13
 -2.5840E-14  7.1633E-14 -5.4808E-14  6.3214E-14  2.4777E-14  1.1644E-12
  3.6444E-14  4.5514E-14 -3.3849E-14  2.4777E-14  1.0916E-13  6.9112E-13
 -7.9571E-13  2.1328E-12 -6.5995E-13  1.1644E-12  6.9112E-13  3.4692E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -31.107935   18.015611    0.246988   -0.503056   -0.833973  2456927.759458
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:           86.83906 +/-     0.053
Argument of Peri:      199.28390 +/-     0.039
Long of Asc Node:       72.36243 +/-     0.001
Inclination:            35.76547 +/-     0.000
Eccentricity:         0.12004107 +/-    0.0003
Semi-Major Axis:     43.75688691 +/-    0.0042
Time of Perihelion: 2431418.1230 +/-      15.0
Perihelion:          38.50426342 +/-    0.0119
Aphelion:            49.00951039 +/-    0.0122
Period (y)              289.4528 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.22519016 +/-    0.0005
Ecliptic Y           11.52422777 +/-    0.0002
Ecliptic Z          -22.35151698 +/-    0.0003
Ecliptic XDOT        -0.00005936 +/-    0.0000
Ecliptic YDOT         0.00251150 +/-    0.0000
Ecliptic ZDOT         0.00058888 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.09832807 +/-    0.0004
Geocenter to KBO     43.26250785 +/-    0.0006
# Hcoef:  6.82

The following table shows the complete astrometric record for 14SA374. 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 (14SA374) followed by the observatory code and reference code for the source of the astrometry.

2014 09  27.25868  01 55 22.916  -21 38 04.82  23.5g 14SA374   W84  C~4yUY      
2014 09  27.25868  01 55 22.92   -21 38 04.8   23.7g 14SA374   W84  C~3cns      
2014 09  27.26006  01 55 22.916  -21 38 04.85  23.2r 14SA374   W84  C~4yUY      
2014 09  27.26006  01 55 22.92   -21 38 04.9   23.3r 14SA374   W84  C~3cns      
2014 12  23.08867  01 49 23.367  -21 38 06.09  24.0g 14SA374   W84  C~4yUY      
2014 12  23.08867  01 49 23.37   -21 38 06.1   24.0g 14SA374   W84  C~3cns      
2014 12  26.13885  01 49 17.739  -21 36 12.53  24.3g 14SA374   W84  C~4yUY      
2015 01  12.05724  01 49 01.801  -21 23 55.81  22.9i 14SA374   W84  C~4yUY      
2015 01  12.05724  01 49 01.80   -21 23 55.8   23.1i 14SA374   W84  C~3cns      
2015 01  12.09522  01 49 01.789  -21 23 53.85  23.3r 14SA374   W84  C~4yUY      
2015 01  12.09522  01 49 01.79   -21 23 53.8   23.4r 14SA374   W84  C~3cns      
2015 01  14.08930  01 49 01.670  -21 22 16.48  22.7i 14SA374   W84  C~4yUY      
2015 01  14.08930  01 49 01.67   -21 22 16.5   22.8i 14SA374   W84  C~3cns      
2015 01  21.06615  01 49 04.269  -21 16 21.86  24.4g 14SA374   W84  C~4yUY      
2015 08  17.39496  02 01 12.651  -20 19 54.53  23.4r 14SA374   W84  C~4yUY      
2015 08  17.39633  02 01 12.672  -20 19 54.76  24.1g 14SA374   W84  C~4yUY      
2015 08  19.42264  02 01 09.619  -20 21 16.67  22.7i 14SA374   W84  C~4yUY      
2015 09  04.34584  02 00 34.187  -20 32 04.25  23.1z 14SA374   W84  C~4yUY      
2015 11  01.22249  01 56 27.445  -20 59 08.93  23.1z 14SA374   W84  C~4yUY      
2015 11  03.18383  01 56 17.976  -20 59 25.61  23.6r 14SA374   W84  C~4yUY      
2015 11  03.18383  01 56 17.98   -20 59 25.6   23.7r 14SA374   W84  C~3cns      
2015 11  03.18519  01 56 17.971  -20 59 25.73  23.1i 14SA374   W84  C~4yUY      
2015 11  05.17893  01 56 08.404  -20 59 39.09  23.9g 14SA374   W84  C~4yUY      
2015 11  06.25555  01 56 03.270  -20 59 44.71  22.2i 14SA374   W84  C~4yUY      
2015 11  06.25555  01 56 03.27   -20 59 44.8   22.7i 14SA374   W84  C~3cns      
2015 11  06.25691  01 56 03.265  -20 59 44.91  23.5g 14SA374   W84  C~4yUY      
2015 11  06.25691  01 56 03.26   -20 59 44.9   23.5g 14SA374   W84  C~3cns      
2015 11  08.16425  01 55 54.239  -20 59 52.86  23.1r 14SA374   W84  C~4yUY      
2015 11  08.16425  01 55 54.24   -20 59 52.9   23.1r 14SA374   W84  C~3cns      
2016 09  23.24386  02 03 09.213  -19 52 43.44  23.0r 14SA374   W84  C~4yUY      
2016 09  23.24386  02 03 09.21   -19 52 43.4   23.3r 14SA374   W84  C~3cns      
2016 09  24.21167  02 03 05.304  -19 53 16.42  24.1g 14SA374   W84  C~4yUY      
2016 09  24.21167  02 03 05.31   -19 53 16.4   24.4g 14SA374   W84  C~3cns      
2017 12  26.14982  02 00 27.996  -19 04 38.07  22.2Y 14SA374   W84  C~4yUY      
2018 01  10.09454  02 00 09.023  -18 54 48.26  23.1i 14SA374   W84  C~4yUY      
2018 01  10.09591  02 00 09.021  -18 54 48.00  23.6r 14SA374   W84  C~4yUY      
2018 01  10.09864  02 00 09.023  -18 54 47.98  23.4i 14SA374   W84  C~4yUY      
2018 01  10.10001  02 00 09.022  -18 54 48.05  23.8r 14SA374   W84  C~4yUY      
2018 10  18.26925  02 08 38.503  -18 20 45.09  23.0z 14SA374   W84  C~4yUY      
2018 10  18.30751  02 08 38.334  -18 20 46.23  22.9r 14SA374   W84  C~4yUY      
2018 10  28.29376  02 07 50.569  -18 23 43.24  22.7z 14SA374   W84  C~4yUY      

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     0.09
     2   0.0000      0.06     0.02      -0.00     0.08
     3   0.0000     -0.01     0.05      -0.03     0.07
     4   0.0000      0.02     0.08      -0.10    -0.00
     5   0.2377  -4590.59    -0.24    2017.25    -0.10
     6   0.2377  -4590.56    -0.21    2017.23    -0.13
     7   0.2461  -4617.41     0.06    2152.72     0.00
     8   0.2924  -4528.48     0.05    2917.43    -0.02
     9   0.2924  -4528.47     0.06    2917.41    -0.03
    10   0.2925  -4527.81     0.09    2919.32     0.13
    11   0.2925  -4527.84     0.06    2919.28     0.09
    12   0.2980  -4490.65    -0.04    3009.30     0.12
    13   0.2980  -4490.64    -0.03    3009.32     0.14
    14   0.3171  -4316.25     0.08    3320.36    -0.04
    15   0.8874   6395.54    -0.05    2262.54    -0.02
    16   0.8874   6395.72     0.17    2262.21    -0.32
    17   0.8930   6322.56    -0.06    2205.48    -0.03
    18   0.9366   5600.12     0.08    1822.49    -0.05
    19   1.0950   1775.88     0.18    1765.33    -0.05
    20   1.1004   1648.06     0.07    1804.25    -0.13
    21   1.1004   1648.01     0.01    1804.26    -0.12
    22   1.1004   1647.89    -0.01    1804.18    -0.23
    23   1.1059   1520.12    -0.08    1846.67    -0.04
    24   1.1088   1452.14     0.01    1870.79     0.10
    25   1.1088   1452.18     0.05    1870.87     0.18
    26   1.1088   1451.97    -0.07    1870.76     0.04
    27   1.1088   1452.03    -0.01    1870.72    -0.00
    28   1.1140   1333.36    -0.06    1914.97     0.03
    29   1.1140   1333.37    -0.06    1915.01     0.07
    30   1.9904   8570.88    -0.02    3062.63     0.02
    31   1.9904   8570.90    -0.00    3062.58    -0.03
    32   1.9930   8506.99    -0.09    3055.61     0.08
    33   1.9930   8506.90    -0.17    3055.63     0.09
    34   3.2468   7697.75    -0.06    6639.21    -0.06
    35   3.2877   7697.21     0.00    7288.70    -0.08
    36   3.2877   7697.29     0.07    7288.94     0.11
    37   3.2877   7697.33     0.08    7288.95    -0.01
    38   3.2877   7697.29     0.02    7288.89    -0.13
    39   4.0575  15154.78    -0.07    6110.90     0.30
    40   4.0576  15152.10    -0.02    6110.88    -0.10
    41   4.0850  14457.56     0.10    6238.89    -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.

14SA374    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.130    44.143    44.116
ecceobj         0.122     0.122     0.121
incobj         35.760    35.760    35.760
qmin           37.392    37.409    37.443
qmax           50.718    50.756    50.776
amean          43.922    43.932    43.910
amin           43.575    43.583    43.557
amax           44.313    44.316    44.302
emean           0.130     0.130     0.129
emin            0.114     0.115     0.114
emax            0.145     0.146     0.146
imean          34.325    34.325    34.324
imin           34.015    34.018    34.016
imax           34.673    34.644    34.667
excite_mean     0.579     0.579     0.579
fracstop        1.000     1.000     1.000
cjmean          2.664     2.664     2.664

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       181.5     181.8     181.4
kozaiamp        179.9     179.9     180.0