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: 19CH32
# Created Mon Apr 28 01:11:13 2025
# Orbit generated from Bernstein formalism
# Fitting 18 observations of 18
# Arc: 3.08y
# First observation: 2016/02/05
# Last observation: 2019/03/08
Preliminary a, adot, b, bdot, g, gdot:
-0.000052 0.021812 0.000000 0.000127 0.022965 0.000000
# Chi-squared of fit: 5.88 DOF: 30 RMS: 0.10
# Min/Max residuals: -0.22 0.26
# Exact a, adot, b, bdot, g, gdot:
1.523526E-05 2.170932E-02 -4.162698E-07 1.261464E-04 2.316174E-02 -5.038441E-04
# Covariance matrix:
7.3347E-13 -7.1268E-13 1.2221E-15 -3.0342E-15 -4.6786E-13 -7.1645E-12
-7.1268E-13 5.4414E-12 -1.9127E-14 3.2363E-14 7.6230E-12 7.8136E-11
1.2221E-15 -1.9127E-14 6.3314E-13 -2.2204E-13 -2.9460E-14 -2.7923E-13
-3.0342E-15 3.2363E-14 -2.2204E-13 8.9373E-14 4.5815E-14 4.7246E-13
-4.6786E-13 7.6230E-12 -2.9460E-14 4.5815E-14 1.1821E-11 1.1129E-10
-7.1645E-12 7.8136E-11 -2.7923E-13 4.7246E-13 1.1129E-10 1.1407E-09
# lat0 lon0 xBary yBary zBary JD0
1.886481 173.625480 0.603391 0.025769 -0.777370 2457424.150211
# Heliocentric elements and errors
Epoch: 2457420.5000 = 2016/02/02
Mean Anomaly: 248.89308 +/- 1.204
Argument of Peri: 194.39674 +/- 1.159
Long of Asc Node: 93.75996 +/- 0.024
Inclination: 1.88688 +/- 0.000
Eccentricity: 0.04016898 +/- 0.0013
Semi-Major Axis: 43.27462801 +/- 0.0193
Time of Perihelion: 2489511.7808 +/- 347.1
Perihelion: 41.53633029 +/- 0.0599
Aphelion: 45.01292574 +/- 0.0604
Period (y) 284.6808 +/- 0.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.59428525 +/- 0.0064
Ecliptic Y 5.47466596 +/- 0.0007
Ecliptic Z 1.42126134 +/- 0.0002
Ecliptic XDOT -0.00022573 +/- 0.0000
Ecliptic YDOT -0.00256393 +/- 0.0000
Ecliptic ZDOT 0.00001296 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.95968218 +/- 0.0063
Geocenter to KBO 43.17464237 +/- 0.0064
# Hcoef: 8.99
The following table shows the complete astrometric record for 19CH32. 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 (19CH32) followed by the observatory code and reference code for the source of the astrometry.
2016 02 05.649422 11 39 35.07 +04 15 48.5 19CH32 T09 C~8Mhg 2016 02 05.660183 11 39 35.04 +04 15 48.5 19CH32 T09 C~8Mhg 2018 03 18.463065 11 46 05.49 +03 35 15.8 19CH32 T09 C~8Mhg 2018 03 18.46308 11 46 05.48 +03 35 15.8 24.8i 19CH32 T09 C~8Mhg 2018 03 18.50571 11 46 05.30 +03 35 17.0 25.3i 19CH32 T09 C~8Mhg 2018 03 18.578696 11 46 04.99 +03 35 19.0 19CH32 T09 C~8Mhg 2019 02 02.642150 11 53 31.64 +02 46 30.9 19CH32 T09 C~8Mhg 2019 02 04.58875 11 53 25.99 +02 47 11.8 26.6g 19CH32 T09 C~8Mhg 2019 02 04.63313 11 53 25.87 +02 47 12.8 26.4g 19CH32 T09 C~8Mhg 2019 02 04.66250 11 53 25.77 +02 47 13.3 26.0g 19CH32 T09 C~8Mhg 2019 02 05.45789 11 53 23.42 +02 47 30.6 24.7i 19CH32 T09 C~8Mhg 2019 02 05.47392 11 53 23.37 +02 47 30.9 25.1i 19CH32 T09 C~8Mhg 2019 02 05.51157 11 53 23.25 +02 47 31.4 24.4i 19CH32 T09 C~8Mhg 2019 02 05.51425 11 53 23.24 +02 47 31.6 24.6i 19CH32 T09 C~8Mhg 2019 02 28.531376 11 52 00.35 +02 57 06.0 19CH32 T09 C~8Mhg 2019 03 08.35114 11 51 27.76 +03 00 44.1 25.5r 19CH32 T09 C~8Mhg 2019 03 08.36022 11 51 27.71 +03 00 44.3 25.1r 19CH32 T09 C~8Mhg 2019 03 08.43604 11 51 27.38 +03 00 46.5 25.8r 19CH32 T09 C~8Mhg
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 0.10
2 0.0000 -0.41 0.09 -0.18 -0.09
3 2.1131 6330.11 0.00 89.03 0.01
4 2.1131 6329.98 -0.13 88.97 -0.05
5 2.1132 6327.02 -0.02 89.00 0.00
6 2.1134 6321.97 0.15 88.98 0.02
7 2.9925 13641.96 0.26 73.60 -0.10
8 2.9978 13547.61 -0.14 77.25 -0.08
9 2.9979 13545.55 0.03 77.45 0.06
10 2.9980 13543.97 -0.07 77.31 -0.12
11 3.0002 13504.61 -0.06 79.09 0.14
12 3.0002 13503.80 -0.05 79.07 0.09
13 3.0003 13501.95 0.03 78.80 -0.22
14 3.0003 13501.73 -0.05 78.93 -0.10
15 3.0633 12128.58 0.11 109.17 0.07
16 3.0847 11592.14 0.08 114.09 0.16
17 3.0848 11591.37 -0.05 113.97 0.04
18 3.0850 11585.94 -0.10 114.01 0.08
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.
19CH32 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.891 42.939 42.844 ecceobj 0.043 0.046 0.041 incobj 1.886 1.886 1.886 qmin 40.463 40.398 40.525 qmax 45.834 45.976 45.696 amean 43.050 43.100 43.002 amin 42.719 42.777 42.663 amax 43.404 43.444 43.345 emean 0.039 0.041 0.037 emin 0.016 0.019 0.015 emax 0.056 0.059 0.054 imean 1.052 1.035 1.070 imin 0.282 0.286 0.276 imax 1.602 1.573 1.641 excite_mean 0.044 0.046 0.043 fracstop 1.000 1.000 1.000 cjmean 3.088 3.088 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 170.8 170.0 172.4 kozaiamp 179.9 180.0 179.9