Orbit Fit and Astrometric record for 15KT174

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: 15KT174   
# Created Fri Dec  3 02:13:23 2021
# Orbit generated from Bernstein formalism
# Fitting     34 observations of     34
# Arc:   3.24y
# First observation: 2014/05/30
#  Last observation: 2017/08/26
Preliminary a, adot, b, bdot, g, gdot:
   0.000374   0.021404   0.000193   0.010744   0.023628   0.000000
# Chi-squared of fit:    15.72 DOF:     62 RMS:  0.12
# Min/Max residuals:    -0.31    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.493957E-05  2.209014E-02  6.871233E-06  1.109159E-02  2.404912E-02  5.066352E-03
# Covariance matrix:
  2.8800E-13 -3.1283E-13  5.9874E-14 -1.1557E-13 -1.3981E-13 -3.4532E-12
 -3.1283E-13  5.0478E-13 -1.1680E-13  2.2373E-13  2.0018E-13  6.7659E-12
  5.9874E-14 -1.1680E-13  1.8480E-13 -1.3992E-13 -4.9955E-14 -1.7818E-12
 -1.1557E-13  2.2373E-13 -1.3992E-13  1.7258E-13  9.8041E-14  3.4084E-12
 -1.3981E-13  2.0018E-13 -4.9955E-14  9.8041E-14  1.8555E-13  2.8528E-12
 -3.4532E-12  6.7659E-12 -1.7818E-12  3.4084E-12  2.8528E-12  1.0330E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
    6.884828 -127.190159   -0.280118    0.116973   -0.968317  2456807.886218
# Heliocentric elements and errors
Epoch:              2456800.5000  =  2014/05/23
Mean Anomaly:           35.94134 +/-     0.018
Argument of Peri:      313.97558 +/-     0.044
Long of Asc Node:      220.06860 +/-     0.000
Inclination:            27.46307 +/-     0.001
Eccentricity:         0.27586786 +/-    0.0004
Semi-Major Axis:     52.26549706 +/-    0.0141
Time of Perihelion: 2443021.6566 +/-       4.2
Perihelion:          37.84712612 +/-    0.0242
Aphelion:            66.68386800 +/-    0.0284
Period (y)              377.8599 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.32097349 +/-    0.0004
Ecliptic Y          -33.83125977 +/-    0.0006
Ecliptic Z            4.98488905 +/-    0.0001
Ecliptic XDOT         0.00174352 +/-    0.0000
Ecliptic YDOT        -0.00185934 +/-    0.0000
Ecliptic ZDOT         0.00132287 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.55061639 +/-    0.0005
Geocenter to KBO     41.58155750 +/-    0.0007
# Hcoef:  8.74

The following table shows the complete astrometric record for 15KT174. 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 (15KT174) followed by the observatory code and reference code for the source of the astrometry.

2014 05  30.38544  15 28 45.081  -11 48 25.17  25.4r 15KT174   568  C~2lVK      
2014 06  01.31224  15 28 36.513  -11 47 46.55  25.0r 15KT174   568  C~2lVK      
2014 06  01.35552  15 28 36.305  -11 47 45.77  24.3r 15KT174   568  C~2lVK      
2014 06  01.39843  15 28 36.139  -11 47 44.64  25.8r 15KT174   568  C~2lVK      
2015 02  25.61255  15 39 21.982  -12 05 58.60  24.6r 15KT174   568  C~2lVK      
2015 03  19.61637  15 39 00.863  -11 58 44.60  24.5r 15KT174   568  C~2lVK      
2015 03  22.53501  15 38 54.860  -11 57 38.25  24.8r 15KT174   568  C~2lVK      
2015 04  13.54773  15 37 49.126  -11 48 40.58  25.6r 15KT174   568  C~2lVK      
2015 04  13.58882  15 37 48.961  -11 48 39.51  25.0r 15KT174   568  C~2lVK      
2015 04  18.55227  15 37 29.977  -11 46 33.41  26.1r 15KT174   568  C~2lVK      
2015 05  21.31829  15 35 04.642  -11 33 16.09  24.4r 15KT174   568  C~2lVK      
2015 05  21.35947  15 35 04.426  -11 33 15.07  24.6r 15KT174   568  C~2lVK      
2015 05  21.40058  15 35 04.237  -11 33 14.30  25.1r 15KT174   568  C~2lVK      
2015 05  22.47722  15 34 59.249  -11 32 50.71  25.1r 15KT174   568  C~2lVK      
2015 05  25.46768  15 34 45.485  -11 31 46.56  24.5r 15KT174   568  C~2lVK      
2015 06  20.35717  15 32 55.921  -11 24 13.24  24.9r 15KT174   568  C~2lVK      
2015 06  20.39803  15 32 55.770  -11 24 12.99  25.5r 15KT174   568  C~2lVK      
2015 06  23.41822  15 32 44.819  -11 23 33.86  25.3r 15KT174   568  C~2lVK      
2015 07  11.29135  15 31 51.601  -11 20 50.38  24.7r 15KT174   568  C~2lVK      
2015 07  18.36074  15 31 36.882  -11 20 19.03  25.5r 15KT174   568  C~2lVK      
2016 02  05.64703  15 44 24.726  -11 51 47.06  25.6w 15KT174   568  C~2lVL      
2016 02  11.65893  15 44 35.740  -11 50 38.98  25.3w 15KT174   568  C~2lVL      
2016 02  12.59848  15 44 37.163  -11 50 27.31  25.2w 15KT174   568  C~2lVL      
2016 03  17.60989  15 44 31.745  -11 40 17.99  25.1w 15KT174   568  C~2lVL      
2016 04  03.53046  15 43 51.196  -11 33 38.45  25.2w 15KT174   568  C~2lVL      
2016 04  08.58000  15 43 35.046  -11 31 33.14  25.2w 15KT174   568  C~2lVL      
2016 05  04.39265  15 41 51.858  -11 20 47.57  25.5w 15KT174   568  C~2lVL      
2016 05  30.47009  15 39 52.505  -11 11 14.22  24.9w 15KT174   568  C~2lVL      
2016 07  04.30222  15 37 38.995  -11 03 18.69  25.1w 15KT174   568  C~2lVL      
2016 07  05.37053  15 37 35.938  -11 03 10.67  25.3w 15KT174   568  C~2lVL      
2017 03  28.60286  15 49 34.332  -11 17 05.29  25.8w 15KT174   568  C~2lVL      
2017 07  28.30588  15 42 16.508  -10 43 51.34  24.9w 15KT174   568  C~2lVL      
2017 08  20.26151  15 42 13.136  -10 46 04.90  25.2w 15KT174   568  C~2lVL      
2017 08  26.27332  15 42 20.032  -10 47 07.88  25.3w 15KT174   568  C~2lVL      

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    -0.09       0.00     0.09
     2   0.0053   -131.44     0.04       6.53    -0.01
     3   0.0054   -134.59    -0.12       6.53    -0.13
     4   0.0055   -137.23     0.20       7.03     0.24
     5   0.7426   9331.17    -0.11    1230.99     0.02
     6   0.8028   8926.75    -0.04    1579.70    -0.31
     7   0.8108   8825.28     0.06    1623.33    -0.09
     8   0.8711   7758.68     0.10    1916.78    -0.05
     9   0.8712   7756.07    -0.05    1917.25    -0.06
    10   0.8848   7454.91     0.12    1973.39    -0.27
    11   0.9745   5188.96     0.21    2236.80     0.02
    12   0.9746   5185.63    -0.13    2237.03     0.06
    13   0.9747   5182.75    -0.04    2237.11    -0.05
    14   0.9777   5105.87    -0.09    2242.39    -0.02
    15   0.9859   4893.96    -0.10    2256.00     0.11
    16   1.0567   3220.76    -0.08    2307.13     0.15
    17   1.0568   3218.54     0.05    2306.83    -0.13
    18   1.0651   3052.78     0.12    2305.79    -0.02
    19   1.1140   2253.71    -0.09    2274.45     0.12
    20   1.1334   2036.08     0.02    2252.22     0.11
    21   1.6872  13463.99    -0.11    3103.41     0.03
    22   1.7037  13606.16     0.05    3207.45     0.08
    23   1.7063  13623.86     0.22    3223.69    -0.02
    24   1.7994  13404.49    -0.04    3799.22     0.02
    25   1.8457  12729.51    -0.10    4049.58     0.16
    26   1.8595  12468.53     0.00    4116.18    -0.13
    27   1.9302  10837.19     0.04    4388.92     0.05
    28   2.0016   8991.16    -0.20    4532.18    -0.01
    29   2.0970   6965.87     0.03    4527.14     0.04
    30   2.0999   6920.19     0.07    4524.19     0.19
    31   2.8288  17438.88     0.00    6189.33     0.02
    32   3.1620  10671.41    -0.04    6633.01    -0.20
    33   3.2248  10654.24     0.29    6491.17     0.14
    34   3.2413  10768.12    -0.21    6453.77    -0.12

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.

15KT174    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        51.856    51.896    51.815
ecceobj         0.270     0.271     0.269
incobj         27.537    27.537    27.536
qmin           36.750    36.942    36.383
qmax           68.302    68.401    68.764
amean          52.261    52.325    52.228
amin           51.745    51.832    51.700
amax           52.869    52.945    52.942
emean           0.273     0.275     0.281
emin            0.255     0.258     0.260
emax            0.293     0.293     0.300
imean          28.145    28.155    27.873
imin           27.686    27.750    27.410
imax           28.680    28.657    28.508
excite_mean     0.545     0.546     0.545
fracstop        1.000     1.000     1.000
cjmean          2.811     2.811     2.812

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       161.6     163.4     165.8
kozaiamp        180.0     179.9     179.9