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: 19CO30
# Created Mon Jul 7 01:11:37 2025
# Orbit generated from Bernstein formalism
# Fitting 16 observations of 16
# Arc: 3.16y
# First observation: 2018/03/18
# Last observation: 2021/05/13
Preliminary a, adot, b, bdot, g, gdot:
0.000123 0.029821 0.000025 -0.005173 0.027669 0.000000
# Chi-squared of fit: 9.27 DOF: 26 RMS: 0.13
# Min/Max residuals: -0.35 0.22
# Exact a, adot, b, bdot, g, gdot:
1.682609E-05 2.975676E-02 -2.967728E-06 -5.127270E-03 2.790455E-02 -5.487555E-03
# Covariance matrix:
1.4192E-12 -1.9174E-12 -2.2422E-13 3.5481E-13 -6.7345E-13 -1.7795E-11
-1.9174E-12 4.6078E-12 7.0890E-13 -1.1262E-12 -2.9215E-13 5.6479E-11
-2.2422E-13 7.0890E-13 3.8759E-13 -3.2630E-13 -1.4507E-13 9.4642E-12
3.5481E-13 -1.1262E-12 -3.2630E-13 4.0655E-13 2.3291E-13 -1.5049E-11
-6.7345E-13 -2.9215E-13 -1.4507E-13 2.3291E-13 1.4127E-12 -1.1679E-11
-1.7795E-11 5.6479E-11 9.4642E-12 -1.5049E-11 -1.1679E-11 7.5473E-10
# lat0 lon0 xBary yBary zBary JD0
1.058870 172.548731 -0.082134 0.018392 -0.990787 2458196.074160
# Heliocentric elements and errors
Epoch: 2458190.5000 = 2018/03/13
Mean Anomaly: 316.85128 +/- 0.065
Argument of Peri: 238.16739 +/- 0.157
Long of Asc Node: 358.64998 +/- 0.000
Inclination: 9.82204 +/- 0.001
Eccentricity: 0.22064529 +/- 0.0008
Semi-Major Axis: 42.42778993 +/- 0.0097
Time of Perihelion: 2470289.2222 +/- 17.7
Perihelion: 33.06629775 +/- 0.0344
Aphelion: 51.78928212 +/- 0.0356
Period (y) 276.3655 +/- 0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -36.52241971 +/- 0.0015
Ecliptic Y 4.68656092 +/- 0.0002
Ecliptic Z 0.66217070 +/- 0.0000
Ecliptic XDOT 0.00015230 +/- 0.0000
Ecliptic YDOT -0.00296801 +/- 0.0000
Ecliptic ZDOT -0.00051308 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 36.82783546 +/- 0.0015
Geocenter to KBO 35.83645362 +/- 0.0015
# Hcoef: 8.87
The following table shows the complete astrometric record for 19CO30. 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 (19CO30) followed by the observatory code and reference code for the source of the astrometry.
2018 03 18.573359 11 34 18.40 +03 55 46.6 19CO30 T09 C~870W 2019 02 04.58455 11 43 27.69 +02 39 13.1 25.7g 19CO30 T09 C~83G8 2019 02 04.61629 11 43 27.57 +02 39 13.7 25.0g 19CO30 T09 C~83G8 2019 02 04.65831 11 43 27.40 +02 39 14.7 25.3g 19CO30 T09 C~83G8 2019 02 05.45254 11 43 24.44 +02 39 32.4 24.5i 19CO30 T09 C~8vKU 2019 02 05.46858 11 43 24.40 +02 39 32.6 24.7i 19CO30 T09 C~8vKU 2019 03 02.42751 11 41 32.99 +02 50 30.8 23.6y 19CO30 T09 C~83G8 2019 03 02.51346 11 41 32.57 +02 50 33.4 23.9y 19CO30 T09 C~83G8 2019 03 02.55653 11 41 32.33 +02 50 34.7 24.1y 19CO30 T09 C~83G8 2019 03 02.61089 11 41 32.05 +02 50 36.2 23.8y 19CO30 T09 C~83G8 2019 03 08.35603 11 41 03.01 +02 53 27.6 24.2r 19CO30 T09 C~83G8 2019 03 08.40012 11 41 02.77 +02 53 28.6 24.2r 19CO30 T09 C~83G8 2019 03 08.43185 11 41 02.62 +02 53 29.8 24.4r 19CO30 T09 C~83G8 2021 05 10.972798 11 48 06.11 +01 24 45.3 19CO30 W84 C~870W 2021 05 10.994652 11 48 06.07 +01 24 45.8 19CO30 W84 C~870W 2021 05 13.963399 11 47 58.46 +01 25 24.9 19CO30 W84 C~870W
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 0.01 0.00 0.01
2 0.8844 9379.19 0.18 -956.53 0.02
3 0.8844 9377.29 0.22 -956.69 -0.06
4 0.8846 9374.55 0.03 -956.79 -0.05
5 0.8867 9326.72 -0.35 -958.17 0.11
6 0.8868 9326.09 0.01 -958.22 0.09
7 0.9551 7529.74 -0.09 -1017.17 -0.02
8 0.9553 7522.92 0.12 -1017.28 0.14
9 0.9555 7519.10 -0.18 -1017.52 0.04
10 0.9556 7514.65 -0.20 -1017.80 -0.07
11 0.9713 7046.71 0.06 -1033.18 0.07
12 0.9715 7043.01 0.05 -1033.69 -0.30
13 0.9715 7040.47 0.16 -1033.48 0.02
14 3.1469 15006.49 -0.18 -3402.29 -0.15
15 3.1469 15005.74 0.03 -3402.07 0.16
16 3.1551 14884.85 0.15 -3411.56 0.00
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.
19CO30 quality flag:3 Type: 5:3EE 5:3EE 5:3EE axisobj 42.076 42.093 42.060 ecceobj 0.213 0.213 0.213 incobj 9.854 9.854 9.853 qmin 32.546 32.447 32.606 qmax 52.828 52.695 52.651 amean 42.327 42.327 42.327 amin 41.893 41.909 41.878 amax 42.834 42.816 42.850 emean 0.210 0.213 0.206 emin 0.184 0.191 0.178 emax 0.233 0.232 0.231 imean 10.818 10.694 10.998 imin 10.085 10.100 10.174 imax 11.806 11.533 12.142 excite_mean 0.282 0.283 0.281 fracstop 1.000 1.000 1.000 cjmean 2.988 2.988 2.989 libcent 0 179.5 181.1 179.4 libamp 0 66.5 54.0 76.6 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 158.5 163.7 159.6 kozaiamp 179.9 180.0 180.0