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 Mon Apr 28 01:11:13 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