Orbit Fit and Astrometric record for 19CK32

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: 19CK32    
# Created Tue Apr  1 01:11:11 2025
# Orbit generated from Bernstein formalism
# Fitting     11 observations of     11
# Arc:   0.90y
# First observation: 2018/04/12
#  Last observation: 2019/03/08
Preliminary a, adot, b, bdot, g, gdot:
  -0.000003   0.024469  -0.000000  -0.000077   0.024148   0.000000
# Chi-squared of fit:     2.09 DOF:     16 RMS:  0.08
# Min/Max residuals:    -0.15    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.571113E-05  2.403961E-02  2.272183E-07 -7.891752E-05  2.445182E-02 -2.483072E-03
# Covariance matrix:
  8.8420E-13  4.3462E-11 -3.0821E-15 -6.9146E-14  2.4469E-11  1.6635E-09
  4.3462E-11  1.3014E-08 -8.7711E-13 -2.0474E-11  7.2303E-09  4.8957E-07
 -3.0821E-15 -8.7711E-13  7.2970E-13 -8.3642E-13 -4.8362E-13 -3.2918E-11
 -6.9146E-14 -2.0474E-11 -8.3642E-13  1.2082E-12 -1.1397E-11 -7.7073E-10
  2.4469E-11  7.2303E-09 -4.8362E-13 -1.1397E-11  4.0230E-09  2.7214E-07
  1.6635E-09  4.8957E-07 -3.2918E-11 -7.7073E-10  2.7214E-07  1.8421E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.769856  171.920048   -0.494041    0.042058   -0.867083  2458220.603741
# Heliocentric elements and errors
Epoch:              2458220.5000  =  2018/04/12
Mean Anomaly:          296.82207 +/-    11.633
Argument of Peri:      168.64937 +/-    27.800
Long of Asc Node:       77.92008 +/-     0.223
Inclination:             2.72119 +/-     0.001
Eccentricity:         0.10014873 +/-    0.1772
Semi-Major Axis:     43.35731170 +/-    1.7738
Time of Perihelion: 2476520.6589 +/-    3177.1
Perihelion:          39.01513207 +/-    7.8455
Aphelion:            47.69949134 +/-    7.9254
Period (y)              285.4971 +/-     17.52
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -41.37364236 +/-    0.1049
Ecliptic Y            5.36716018 +/-    0.0149
Ecliptic Z            1.97631241 +/-    0.0051
Ecliptic XDOT        -0.00009727 +/-    0.0005
Ecliptic YDOT        -0.00270827 +/-    0.0001
Ecliptic ZDOT        -0.00002242 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.76709831 +/-    0.1039
Geocenter to KBO     40.89674416 +/-    0.1061
# Hcoef:  8.20

The following table shows the complete astrometric record for 19CK32. 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 (19CK32) followed by the observatory code and reference code for the source of the astrometry.

2018 04  12.102940 11 34 42.42   +05 44 58.5         19CK32    W84  C~8Sg4      
2018 04  13.100658 11 34 38.58   +05 45 21.0         19CK32    W84  C~8Sg4      
2019 02  04.57182  11 44 28.17   +04 41 11.8   24.6g 19CK32    T09  C~8Sg4      
2019 02  04.60582  11 44 28.06   +04 41 12.4   24.8g 19CK32    T09  C~8Sg4      
2019 02  04.63944  11 44 27.95   +04 41 13.3   24.8g 19CK32    T09  C~8Sg4      
2019 03  02.444454 11 42 47.43   +04 52 54.6         19CK32    T09  C~8Sg4      
2019 03  02.540474 11 42 47.00   +04 52 57.5         19CK32    T09  C~8Sg4      
2019 03  02.583347 11 42 46.81   +04 52 58.8         19CK32    T09  C~8Sg4      
2019 03  08.35394  11 42 21.17   +04 55 49.0   24.5r 19CK32    T09  C~8Sg4      
2019 03  08.37696  11 42 21.07   +04 55 49.7   24.2r 19CK32    T09  C~8Sg4      
2019 03  08.41061  11 42 20.90   +04 55 50.7   24.4r 19CK32    T09  C~8Sg4      

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    -0.03       0.00    -0.06
     2   0.0027    -61.54     0.03      -2.02     0.03
     3   0.8172   9556.70    -0.08     -31.75     0.19
     4   0.8173   9554.94     0.05     -31.86     0.02
     5   0.8173   9553.07     0.03     -31.69     0.12
     6   0.8880   7892.52     0.05      11.72    -0.08
     7   0.8883   7885.46     0.01      11.81    -0.01
     8   0.8884   7882.33     0.00      11.87     0.04
     9   0.9042   7462.47     0.01      15.17    -0.08
    10   0.9042   7460.82     0.08      15.21    -0.04
    11   0.9043   7458.09    -0.15      15.12    -0.13

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.

19CK32    quality flag:1

Type:      CLASSICAL  CENTAURR CLASSICAL

axisobj        43.060    62.169    42.764
ecceobj         0.094     0.568     0.031
incobj          2.720     2.723     2.719
qmin           38.581    26.366    40.661
qmax           48.146   102.011    45.389
amean          43.224    62.629    42.897
amin           42.879    61.443    42.573
amax           43.600    64.471    43.246
emean           0.084     0.569     0.028
emin            0.061     0.560     0.009
emax            0.105     0.582     0.050
imean           1.036     1.519     1.024
imin            0.487     1.469     0.157
imax            1.564     1.598     1.764
excite_mean     0.086     0.570     0.034
fracstop        1.000     0.144     1.000
cjmean          3.083     2.851     3.087

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       189.8     228.0     186.8
kozaiamp        180.0      39.7     180.0