Orbit Fit and Astrometric record for 15KB175

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: 15KB175   
# Created Fri Mar 29 01:18:01 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     40 observations of     40
# Arc:   6.31y
# First observation: 2015/03/19
#  Last observation: 2021/07/09
# Chi-squared of fit:     9.91 DOF:     74 RMS:  0.09
# Min/Max residuals:    -0.42    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.669689E-05  2.878864E-02 -1.480264E-06 -2.749497E-03  2.689547E-02 -9.824148E-05
# Covariance matrix:
  1.5253E-13 -5.2234E-14 -4.7173E-15  5.8001E-15  7.0683E-14 -3.4147E-13
 -5.2234E-14  1.1097E-13  6.2863E-15 -1.1741E-14  3.9968E-14  7.2192E-13
 -4.7173E-15  6.2863E-15  6.5255E-14 -1.6951E-14 -3.4960E-16  4.7432E-14
  5.8001E-15 -1.1741E-14 -1.6951E-14  1.0576E-14 -2.7538E-15 -8.5146E-14
  7.0683E-14  3.9968E-14 -3.4960E-16 -2.7538E-15  1.1171E-13  1.8649E-13
 -3.4147E-13  7.2192E-13  4.7432E-14 -8.5146E-14  1.8649E-13  5.2181E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    7.846039 -125.978706    0.818258    0.076783   -0.556347  2457101.113068
# Heliocentric elements and errors
Epoch:              2457100.5000  =  2015/03/19
Mean Anomaly:          349.33076 +/-     0.038
Argument of Peri:      137.57547 +/-     0.047
Long of Asc Node:      108.14752 +/-     0.001
Inclination:             9.36285 +/-     0.000
Eccentricity:         0.10843192 +/-    0.0000
Semi-Major Axis:     42.22731479 +/-    0.0023
Time of Perihelion: 2460070.9332 +/-      13.2
Perihelion:          37.64852617 +/-    0.0026
Aphelion:            46.80610341 +/-    0.0030
Period (y)              274.4090 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.63350117 +/-    0.0003
Ecliptic Y          -29.78020450 +/-    0.0004
Ecliptic Z            5.07561016 +/-    0.0001
Ecliptic XDOT         0.00235149 +/-    0.0000
Ecliptic YDOT        -0.00175034 +/-    0.0000
Ecliptic ZDOT        -0.00027854 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.74783236 +/-    0.0003
Geocenter to KBO     37.18100527 +/-    0.0005
# Hcoef:  6.90

The following table shows the complete astrometric record for 15KB175. 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 (15KB175) followed by the observatory code and reference code for the source of the astrometry.

2015 03  19.61229  15 34 27.532  -11 09 53.97  21.8r 15KB175   568  C~2nvf      
2015 04  13.54363  15 33 04.842  -11 01 41.68  22.5r 15KB175   568  C~2nvf      
2015 04  13.58475  15 33 04.664  -11 01 40.85  22.6r 15KB175   568  C~2nvf      
2015 04  18.54818  15 32 42.979  -10 59 57.01  22.4r 15KB175   568  C~2nvf      
2015 05  21.31423  15 29 58.320  -10 49 25.35  22.5r 15KB175   568  C~2nvf      
2015 05  21.35538  15 29 58.103  -10 49 24.65  22.5r 15KB175   568  C~2nvf      
2015 05  21.39649  15 29 57.888  -10 49 23.98  22.7r 15KB175   568  C~2nvf      
2015 05  22.47313  15 29 52.277  -10 49 06.64  23.0r 15KB175   568  C~2nvf      
2015 05  25.46359  15 29 36.803  -10 48 20.01  22.4r 15KB175   568  C~2nvf      
2015 06  20.35311  15 27 34.540  -10 43 38.06  23.1r 15KB175   568  C~2nvf      
2015 06  20.39396  15 27 34.369  -10 43 37.82  22.6r 15KB175   568  C~2nvf      
2015 06  23.41352  15 27 22.267  -10 43 21.36  22.7r 15KB175   568  C~2nvf      
2015 07  11.28721  15 26 24.148  -10 43 03.42  23.0r 15KB175   568  C~2nvf      
2015 07  18.35664  15 26 08.448  -10 43 34.83  23.0r 15KB175   568  C~2nvf      
2015 08  11.34354  15 25 51.035  -10 48 03.16  22.5r 15KB175   568  C~2nvf      
2016 02  05.63489  15 40 48.396  -11 49 54.12  23.3w 15KB175   568  C~2nvf      
2016 02  11.64674  15 41 00.542  -11 49 29.23  23.2w 15KB175   568  C~2nvf      
2016 03  15.57785  15 40 57.854  -11 43 20.99  22.8w 15KB175   568  C~2nvf      
2016 03  17.59718  15 40 53.999  -11 42 47.82  23.0w 15KB175   568  C~2nvf      
2016 04  03.52224  15 40 07.015  -11 37 40.44  22.8w 15KB175   568  C~2nvf      
2016 04  08.57191  15 39 48.424  -11 36 01.28  23.4w 15KB175   568  C~2nvf      
2016 04  29.45352  15 38 15.065  -11 29 04.14  22.6w 15KB175   568  C~2nvf      
2016 05  04.38860  15 37 50.244  -11 27 28.85  22.7w 15KB175   568  C~2nvf      
2016 05  30.47009  15 35 34.625  -11 20 18.11  23.1w 15KB175   568  C~2nvf      
2016 05  30.49033  15 35 34.525  -11 20 17.85  23.3w 15KB175   568  C~2nvf      
2016 07  03.35835  15 33 08.050  -11 16 09.78  23.3w 15KB175   568  C~2nvg      
2016 07  05.34215  15 33 01.727  -11 16 09.11  22.9w 15KB175   568  C~2nvg      
2017 03  28.59816  15 46 54.310  -12 11 49.16  23.0w 15KB175   568  C~2nvg      
2017 06  26.28306  15 40 01.069  -11 49 17.46  22.7w 15KB175   568  C~2nvg      
2017 07  28.28692  15 38 35.991  -11 50 37.89  22.7w 15KB175   568  C~2nvg      
2017 07  28.30120  15 38 35.964  -11 50 38.01  22.9w 15KB175   568  C~2nvg      
2017 08  19.25564  15 38 33.798  -11 55 31.88  22.8w 15KB175   568  C~2nvg      
2017 08  25.26415  15 38 41.889  -11 57 22.87  22.8w 15KB175   568  C~2nvg      
2020 06  22.33733  15 59 52.056  -13 24 59.50  22.7w 15KB175   F51  C~3xrZ      
2020 06  22.34948  15 59 52.022  -13 24 59.33  22.4w 15KB175   F51  C~3xrZ      
2020 06  22.36160  15 59 51.962  -13 24 59.63  22.6w 15KB175   F51  C~3xrZ      
2020 06  22.37374  15 59 51.913  -13 24 59.42  22.6w 15KB175   F51  C~3xrZ      
2021 07  09.227930 16 05 19.605  -13 54 45.96  23.0G 15KB175   G37  C~4uxq      
2021 07  09.260500 16 05 19.448  -13 54 46.25        15KB175   G37  C~4uxq      
2021 07  09.293400 16 05 19.351  -13 54 46.20        15KB175   G37  C~4uxq      

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    -0.04
     2   0.0683      0.00    -0.03       0.00     0.01
     3   0.0684      0.00    -0.04       0.00    -0.02
     4   0.0820      0.00     0.01       0.00    -0.00
     5   0.1717      0.00    -0.03       0.00    -0.01
     6   0.1718      0.00    -0.02       0.00     0.02
     7   0.1719      0.00     0.02       0.00     0.03
     8   0.1748      0.00    -0.01       0.00    -0.02
     9   0.1830      0.00     0.01       0.00    -0.01
    10   0.2539      0.00     0.03       0.00     0.01
    11   0.2540      0.00     0.04       0.00     0.00
    12   0.2623      0.00     0.02       0.00     0.02
    13   0.3112      0.00    -0.00       0.00    -0.03
    14   0.3306      0.00    -0.01       0.00     0.02
    15   0.3963      0.00     0.01       0.00     0.01
    16   0.8844      0.00     0.01       0.00     0.02
    17   0.9008      0.00    -0.02       0.00    -0.01
    18   0.9910      0.00    -0.06       0.00    -0.05
    19   0.9965      0.00     0.02       0.00     0.07
    20   1.0429      0.00    -0.06       0.00     0.02
    21   1.0567      0.00     0.03       0.00    -0.02
    22   1.1139      0.00     0.01       0.00    -0.01
    23   1.1274      0.00     0.06       0.00     0.02
    24   1.1988      0.00    -0.11       0.00    -0.01
    25   1.1988      0.00    -0.04       0.00    -0.03
    26   1.2916      0.00    -0.06       0.00    -0.07
    27   1.2970      0.00     0.10       0.00     0.05
    28   2.0260      0.00    -0.05       0.00    -0.00
    29   2.2715      0.00    -0.06       0.00     0.03
    30   2.3591      0.00     0.05       0.00     0.01
    31   2.3592      0.00    -0.08       0.00     0.02
    32   2.4193      0.00    -0.04       0.00    -0.04
    33   2.4357      0.00    -0.06       0.00     0.01
    34   5.2614      0.00    -0.13       0.00     0.14
    35   5.2614      0.00     0.20       0.00     0.25
    36   5.2615      0.00     0.14       0.00    -0.12
    37   5.2615      0.00     0.24       0.00     0.02
    38   6.3070      0.00     0.18       0.00     0.11
    39   6.3070      0.00    -0.42       0.00    -0.19
    40   6.3071      0.00    -0.10       0.00    -0.15

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.

15KB175    quality flag:2

Type:      CLASSICAL CLASSICAL  SCATNEAR

axisobj        41.865    41.865    41.865
ecceobj         0.102     0.102     0.102
incobj          9.358     9.358     9.358
qmin           35.658    35.741    35.775
qmax           48.943    49.080    48.975
amean          42.145    42.144    42.146
amin           41.764    41.749    41.743
amax           42.576    42.574    42.615
emean           0.123     0.123     0.122
emin            0.095     0.095     0.095
emax            0.150     0.153     0.150
imean           5.176     5.136     5.334
imin            2.898     2.841     3.068
imax            8.989     8.944     9.190
excite_mean     0.155     0.155     0.156
fracstop        1.000     1.000     1.000
cjmean          3.053     3.053     3.052

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       179.3     179.7     179.2
kozaiamp        180.0     180.0     180.0