Orbit Fit and Astrometric record for 15KD174

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: 15KD174   
# Created Sat Apr 20 01:10:08 2019
# Orbit generated from Bernstein formalism
# Fitting   35 observations of   35
# Arc:   3.25y
# First observation: 2014/05/30
#  Last observation: 2017/08/31
Preliminary a, adot, b, bdot, g, gdot:
  -0.000071   0.038246  -0.000007   0.010815   0.030915   0.000000
# Chi-squared of fit:     5.18 DOF:   64 RMS:  0.07
# Min/Max residuals:    -0.21    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.951590E-05  3.811611E-02  5.561024E-06  1.078071E-02  3.102802E-02 -5.973915E-03
# Covariance matrix:
  1.6551E-13 -1.8826E-13  1.4044E-14 -3.5516E-14 -4.2254E-14 -1.1688E-12
 -1.8826E-13  3.9184E-13 -3.7661E-14  9.3910E-14  7.7208E-14  3.1186E-12
  1.4044E-14 -3.7661E-14  1.1994E-13 -6.9824E-14 -7.9895E-15 -3.4151E-13
 -3.5516E-14  9.3910E-14 -6.9824E-14  7.3721E-14  2.4305E-14  8.5208E-13
 -4.2254E-14  7.7208E-14 -7.9895E-15  2.4305E-14  1.3517E-13  7.1379E-13
 -1.1688E-12  3.1186E-12 -3.4151E-13  8.5208E-13  7.1379E-13  2.8285E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.869707 -127.328011   -0.282464    0.116636   -0.967676  2456807.886218
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:          349.49243 +/-     0.008
Argument of Peri:       51.00807 +/-     0.024
Long of Asc Node:      210.69502 +/-     0.000
Inclination:            17.01330 +/-     0.000
Eccentricity:         0.41963772 +/-    0.0001
Semi-Major Axis:     55.27424175 +/-    0.0059
Time of Perihelion: 2461181.5938 +/-       3.5
Perihelion:          32.07908511 +/-    0.0056
Aphelion:            78.46939839 +/-    0.0095
Period (y)              410.9532 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -19.77031979 +/-    0.0002
Ecliptic Y          -26.38858663 +/-    0.0003
Ecliptic Z            3.85520261 +/-    0.0000
Ecliptic XDOT         0.00305549 +/-    0.0000
Ecliptic YDOT        -0.00153644 +/-    0.0000
Ecliptic ZDOT         0.00088151 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.19767516 +/-    0.0003
Geocenter to KBO     32.22893113 +/-    0.0004
# Hcoef:  8.93

The following table shows the complete astrometric record for 15KD174. 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 (15KD174) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.38544  15 28 11.645  -11 47 16.72  24.0r 15KD174   568  C~2lVI      
2014 05  31.42411  15 28 06.013  -11 46 52.98  23.9r 15KD174   568  C~2lVI      
2014 06  01.31224  15 28 01.221  -11 46 33.03  24.2r 15KD174   568  C~2lVI      
2014 06  01.35552  15 28 00.989  -11 46 31.98  23.9r 15KD174   568  C~2lVI      
2014 06  01.39843  15 28 00.749  -11 46 30.95  23.9r 15KD174   568  C~2lVI      
2014 06  21.35408  15 26 23.221  -11 40 21.43  23.9r 15KD174   568  C~2lVI      
2014 06  21.39293  15 26 23.042  -11 40 20.93  24.1r 15KD174   568  C~2lVI      
2014 07  19.27038  15 24 57.490  -11 36 46.29  23.9r 15KD174   568  C~2lVI      
2015 02  25.61666  15 43 23.704  -12 24 03.30  24.3r 15KD174   568  C~2lVI      
2015 03  19.62043  15 43 06.454  -12 16 04.04  24.3r 15KD174   568  C~2lVI      
2015 03  22.53917  15 42 59.951  -12 14 49.33  24.1r 15KD174   568  C~2lVI      
2015 04  18.55634  15 41 21.029  -12 02 07.46  23.9r 15KD174   568  C~2lVI      
2015 05  21.32236  15 38 23.444  -11 46 46.68  23.6r 15KD174   568  C~2lVI      
2015 05  21.36353  15 38 23.207  -11 46 45.78  23.9r 15KD174   568  C~2lVI      
2015 05  21.40471  15 38 22.968  -11 46 44.67  24.0r 15KD174   568  C~2lVI      
2015 05  22.48134  15 38 16.814  -11 46 17.72  23.8r 15KD174   568  C~2lVI      
2015 05  25.47177  15 37 59.824  -11 45 04.45  23.9r 15KD174   568  C~2lVI      
2015 06  20.36123  15 35 44.691  -11 36 38.58  24.0r 15KD174   568  C~2lVI      
2015 06  20.40209  15 35 44.504  -11 36 37.97  24.0r 15KD174   568  C~2lVI      
2015 06  23.42230  15 35 31.061  -11 35 56.59  23.5r 15KD174   568  C~2lVI      
2015 07  11.29546  15 34 26.576  -11 33 18.23  24.0r 15KD174   568  C~2lVI      
2015 07  18.36550  15 34 09.254  -11 32 58.18  24.0r 15KD174   568  C~2lVI      
2016 02  06.64531  15 51 57.935  -12 22 49.27  24.6w 15KD174   568  C~2lVI      
2016 02  12.63086  15 52 15.020  -12 21 41.38  24.2w 15KD174   568  C~2lVI      
2016 04  08.60833  15 51 25.265  -12 00 48.35  24.3w 15KD174   568  C~2lVI      
2016 04  09.55226  15 51 21.543  -12 00 21.27  24.6w 15KD174   568  C~2lVI      
2016 04  29.50547  15 49 47.678  -11 50 44.00  24.1w 15KD174   568  C~2lVI      
2016 05  04.47810  15 49 20.846  -11 48 23.64  24.2w 15KD174   568  C~2lVI      
2016 05  30.45392  15 46 53.181  -11 37 28.52  24.2w 15KD174   568  C~2lVI      
2016 07  04.31437  15 44 05.441  -11 28 52.74  24.3w 15KD174   568  C~2lVI      
2016 07  05.38672  15 44 01.607  -11 28 45.38  24.2w 15KD174   568  C~2lVI      
2017 03  28.61692  16 01 29.724  -11 59 01.18  24.0w 15KD174   568  C~2lVI      
2017 05  21.55221  15 57 17.081  -11 34 18.04  23.8w 15KD174   568  C~2lVI      
2017 08  20.26626  15 52 23.512  -11 25 55.51  24.4w 15KD174   568  C~2lVI      
2017 08  31.26147  15 52 44.212  -11 28 55.19        15KD174   568  C~2lVI      

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    -0.02       0.00    -0.01
  2   0.0028    -86.00     0.15       2.63     0.03
  3   0.0053   -159.11     0.01       4.62    -0.07
  4   0.0054   -162.67     0.06       4.79     0.04
  5   0.0055   -166.34    -0.02       4.92     0.09
  6   0.0601  -1645.67     0.01       8.80     0.02
  7   0.0603  -1648.34    -0.10       8.63    -0.07
  8   0.1366  -2919.28    -0.02     -95.89    -0.21
  9   0.7426  13535.45     0.14    1065.99    -0.05
 10   0.8028  13176.51    -0.01    1473.94     0.01
 11   0.8108  13065.96    -0.14    1524.43     0.00
 12   0.8848  11471.68    -0.03    1925.85    -0.16
 13   0.9745   8714.78    -0.04    2204.50     0.10
 14   0.9746   8711.18     0.03    2204.54    -0.02
 15   0.9747   8707.50     0.01    2204.79     0.06
 16   0.9777   8613.15    -0.04    2209.47     0.01
 17   0.9859   8352.93    -0.06    2221.26     0.04
 18   1.0567   6301.82     0.01    2237.82    -0.00
 19   1.0569   6299.01     0.05    2237.76     0.03
 20   1.0651   6097.13    -0.02    2230.48     0.00
 21   1.1141   5138.49    -0.03    2156.04     0.13
 22   1.1334   4886.44    -0.02    2114.05     0.09
 23   1.6900  20904.76    -0.03    2873.52     0.04
 24   1.7064  21135.85    -0.00    2996.86    -0.08
 25   1.8596  20133.33    -0.04    4057.78    -0.02
 26   1.8622  20073.45     0.02    4071.83    -0.04
 27   1.9168  18587.81     0.10    4321.28     0.13
 28   1.9304  18168.91     0.01    4368.00     0.01
 29   2.0016  15891.83    -0.03    4507.14     0.07
 30   2.0970  13360.94    -0.02    4435.91    -0.05
 31   2.0999  13304.16     0.03    4429.89    -0.03
 32   2.8288  28886.49     0.05    6156.99     0.05
 33   2.9765  24873.93    -0.13    6788.26    -0.01
 34   3.2249  20500.30     0.14    6302.45    -0.03
 35   3.2550  20840.68    -0.03    6195.93    -0.10

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.

15KD174    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE

axisobj        54.856    54.869    54.842
ecceobj         0.417     0.417     0.417
incobj         17.062    17.062    17.062
qmin           31.549    31.547    31.551
qmax           80.643    80.615    80.630
amean          55.461    55.461    55.461
amin           54.817    54.819    54.780
amax           56.364    56.350    56.360
emean           0.417     0.418     0.417
emin            0.406     0.408     0.405
emax            0.432     0.431     0.431
imean          17.934    17.866    17.976
imin           17.358    17.359    17.357
imax           18.199    18.100    18.245
excite_mean     0.519     0.519     0.519
fracstop        1.000     1.000     1.000
cjmean          2.889     2.889     2.889

libcent 0       180.2     179.3     180.9
libamp  0        58.2      50.8      60.3
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        81.0      79.6      81.1
kozaiamp         31.8      30.5      31.8