Orbit Fit and Astrometric record for 15KE173

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: 15KE173   
# Created Tue Nov 30 02:13:24 2021
# Orbit generated from Bernstein formalism
# Fitting     34 observations of     34
# Arc:   2.83y
# First observation: 2014/05/30
#  Last observation: 2017/03/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000090   0.020837   0.000006  -0.001632   0.023320   0.000000
# Chi-squared of fit:     9.62 DOF:     62 RMS:  0.09
# Min/Max residuals:    -0.23    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.389856E-05  2.064839E-02 -5.826352E-07 -1.621397E-03  2.358565E-02 -5.122685E-03
# Covariance matrix:
  1.6330E-13 -1.8072E-13 -3.0996E-15  8.0192E-15 -4.7753E-14 -1.8702E-12
 -1.8072E-13  3.8363E-13  8.8891E-15 -2.4549E-14  1.1032E-13  5.6444E-12
 -3.0996E-15  8.8891E-15  1.3098E-13 -8.2650E-14  6.6619E-15  1.7853E-13
  8.0192E-15 -2.4549E-14 -8.2650E-14  7.8628E-14 -1.0527E-14 -4.5879E-13
 -4.7753E-14  1.1032E-13  6.6619E-15 -1.0527E-14  2.1778E-13  2.8035E-12
 -1.8702E-12  5.6444E-12  1.7853E-13 -4.5879E-13  2.8035E-12  1.0716E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.875640 -126.166674   -0.262847    0.117391   -0.973100  2456807.897968
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:          259.05066 +/-     0.079
Argument of Peri:      250.97514 +/-     0.057
Long of Asc Node:      109.78910 +/-     0.004
Inclination:             8.12684 +/-     0.000
Eccentricity:         0.25282476 +/-    0.0003
Semi-Major Axis:     39.30815334 +/-    0.0078
Time of Perihelion: 2482042.4762 +/-      18.3
Perihelion:          29.37007881 +/-    0.0149
Aphelion:            49.24622787 +/-    0.0168
Period (y)              246.4519 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.20862283 +/-    0.0005
Ecliptic Y          -34.92735702 +/-    0.0007
Ecliptic Z            5.07577959 +/-    0.0001
Ecliptic XDOT         0.00226487 +/-    0.0000
Ecliptic YDOT        -0.00095972 +/-    0.0000
Ecliptic ZDOT        -0.00025792 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.37232380 +/-    0.0006
Geocenter to KBO     42.39865328 +/-    0.0008
# Hcoef:  7.98

The following table shows the complete astrometric record for 15KE173. 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 (15KE173) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.39719  15 32 46.328  -12 03 45.60  24.6r 15KE173   568  C~2lVE      
2014 05  31.43190  15 32 41.592  -12 03 31.67  24.5r 15KE173   568  C~2lVE      
2014 06  01.32413  15 32 37.556  -12 03 20.59  24.4r 15KE173   568  C~2lVE      
2014 06  01.36716  15 32 37.357  -12 03 20.16  24.2r 15KE173   568  C~2lVE      
2014 06  01.41010  15 32 37.169  -12 03 19.76  23.6r 15KE173   568  C~2lVE      
2014 06  22.32150  15 31 10.262  -11 59 56.67  24.1r 15KE173   568  C~2lVE      
2014 06  22.36436  15 31 10.107  -11 59 56.58  24.0r 15KE173   568  C~2lVE      
2014 07  19.33752  15 29 54.635  -11 59 09.47  24.4r 15KE173   568  C~2lVE      
2015 02  25.61666  15 42 32.148  -12 50 09.25  24.4r 15KE173   568  C~2lVE      
2015 03  19.62043  15 42 09.778  -12 45 50.09  24.0r 15KE173   568  C~2lVE      
2015 03  22.53917  15 42 03.609  -12 45 07.33  24.1r 15KE173   568  C~2lVE      
2015 04  13.55184  15 40 56.473  -12 39 04.41  24.5r 15KE173   568  C~2lVE      
2015 04  13.59295  15 40 56.314  -12 39 03.65  24.1r 15KE173   568  C~2lVE      
2015 04  18.55634  15 40 36.942  -12 37 36.11  24.3r 15KE173   568  C~2lVE      
2015 05  21.32236  15 38 08.334  -12 28 22.32  24.4r 15KE173   568  C~2lVE      
2015 05  21.36353  15 38 08.131  -12 28 21.83  24.0r 15KE173   568  C~2lVE      
2015 05  21.40471  15 38 07.925  -12 28 21.29  24.4r 15KE173   568  C~2lVE      
2015 05  22.48134  15 38 02.827  -12 28 05.14  24.4r 15KE173   568  C~2lVE      
2015 05  25.47177  15 37 48.670  -12 27 21.90  24.0r 15KE173   568  C~2lVE      
2015 06  20.36123  15 35 55.178  -12 22 38.27  24.1r 15KE173   568  C~2lVE      
2015 06  20.40209  15 35 55.017  -12 22 38.02  24.1r 15KE173   568  C~2lVE      
2015 06  23.42230  15 35 43.531  -12 22 17.51  24.5r 15KE173   568  C~2lVE      
2015 07  11.29546  15 34 46.995  -12 21 18.83  24.6r 15KE173   568  C~2lVE      
2016 02  06.63317  15 46 50.850  -13 13 32.88  24.6w 15KE173   568  C~2lVE      
2016 02  12.61871  15 47 00.893  -13 13 14.29  24.8w 15KE173   568  C~2lVE      
2016 03  15.62688  15 46 56.481  -13 08 27.97  24.8w 15KE173   568  C~2lVE      
2016 04  03.55069  15 46 10.883  -13 03 46.24  24.6w 15KE173   568  C~2lVE      
2016 04  08.60024  15 45 54.169  -13 02 22.49  23.9w 15KE173   568  C~2lVE      
2016 04  29.50143  15 44 29.942  -12 56 23.84  24.6w 15KE173   568  C~2lVE      
2016 05  04.47406  15 44 07.303  -12 54 59.56  24.7w 15KE173   568  C~2lVE      
2016 05  30.46201  15 42 04.044  -12 48 27.60  24.2w 15KE173   568  C~2lVE      
2016 07  04.29818  15 39 43.734  -12 43 48.91  24.8w 15KE173   568  C~2lVE      
2016 07  05.36646  15 39 40.454  -12 43 46.33  25.0w 15KE173   568  C~2lVE      
2017 03  30.57261  15 51 09.376  -13 26 48.70  24.4w 15KE173   568  C~2lVE      

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    -0.01       0.00    -0.10
     2   0.0028    -70.78    -0.23      -3.16     0.32
     3   0.0053   -130.92    -0.01      -6.62     0.05
     4   0.0054   -133.85     0.01      -6.90    -0.06
     5   0.0055   -136.63     0.19      -7.18    -0.17
     6   0.0628  -1423.02    -0.02    -117.10     0.06
     7   0.0629  -1425.25     0.11    -117.57    -0.10
     8   0.1367  -2511.21     0.01    -339.87    -0.06
     9   0.7426   9000.63    -0.09    -683.86    -0.10
    10   0.8028   8621.64    -0.09    -507.22     0.10
    11   0.8108   8523.77     0.07    -486.50     0.10
    12   0.8711   7482.40     0.07    -361.37     0.06
    13   0.8712   7479.95     0.05    -361.17     0.09
    14   0.8848   7183.45    -0.07    -342.02    -0.05
    15   0.9745   4936.45    -0.04    -312.86     0.04
    16   0.9746   4933.44    -0.07    -313.09    -0.10
    17   0.9747   4930.38    -0.15    -313.27    -0.19
    18   0.9776   4853.97     0.12    -315.14     0.04
    19   0.9858   4642.15     0.02    -321.92     0.05
    20   1.0567   2959.08     0.01    -439.29     0.04
    21   1.0568   2956.73     0.04    -439.61    -0.01
    22   1.0651   2788.35    -0.04    -459.62    -0.02
    23   1.1140   1969.67     0.00    -599.62     0.04
    24   1.6899  13013.84     0.14   -1185.44    -0.05
    25   1.7063  13153.00     0.12   -1133.98     0.05
    26   1.7939  13024.73    -0.01    -869.19     0.01
    27   1.8457  12309.25     0.06    -745.93     0.07
    28   1.8596  12051.46    -0.11    -719.94     0.21
    29   1.9168  10767.06    -0.07    -652.00    -0.04
    30   1.9304  10424.67     0.02    -645.87    -0.10
    31   2.0015   8576.44    -0.04    -680.02    -0.16
    32   2.0969   6512.55     0.05    -886.48     0.01
    33   2.0998   6465.24     0.01    -895.19     0.03
    34   2.8342  16889.88    -0.05   -1112.87    -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.

15KE173    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.169    39.189    39.148
ecceobj         0.258     0.259     0.257
incobj          8.120     8.120     8.120
qmin           28.881    28.773    28.919
qmax           50.654    50.709    50.490
amean          39.455    39.455    39.455
amin           39.000    39.016    38.987
amax           39.978    39.991    39.989
emean           0.242     0.243     0.239
emin            0.204     0.204     0.204
emax            0.268     0.270     0.265
imean           7.310     7.226     7.519
imin            5.387     5.002     6.034
imax            9.952    10.001     9.922
excite_mean     0.274     0.275     0.274
fracstop        1.000     1.000     1.000
cjmean          2.966     2.966     2.966

libcent 0       180.4     180.4     180.4
libamp  0        80.6      77.2      85.6
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       240.3     240.5     238.6
kozaiamp         72.5      71.9      74.6