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: 19CH30
# Created Tue Apr 1 01:11:10 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 21 observations of 21
# Arc: 5.10y
# First observation: 2014/02/28
# Last observation: 2019/04/05
# Chi-squared of fit: 10.15 DOF: 36 RMS: 0.12
# Min/Max residuals: -0.27 0.35
# Exact a, adot, b, bdot, g, gdot:
1.602620E-05 2.625449E-02 6.333759E-07 1.049205E-03 2.531988E-02 -1.387390E-03
# Covariance matrix:
3.6695E-13 -1.7459E-13 3.3273E-16 -4.0510E-15 -9.2560E-14 -7.6206E-13
-1.7459E-13 1.8760E-12 -5.5803E-15 7.4127E-14 2.1383E-12 1.3874E-11
3.3273E-16 -5.5803E-15 3.5975E-13 -7.3760E-14 -6.0219E-15 -4.1806E-14
-4.0510E-15 7.4127E-14 -7.3760E-14 2.1536E-14 8.5085E-14 5.5378E-13
-9.2560E-14 2.1383E-12 -6.0219E-15 8.5085E-14 2.7898E-12 1.5872E-11
-7.6206E-13 1.3874E-11 -4.1806E-14 5.5378E-13 1.5872E-11 1.0367E-10
# lat0 lon0 xBary yBary zBary JD0
2.867821 172.548886 0.219879 0.048327 -0.962740 2456716.991570
# Heliocentric elements and errors
Epoch: 2456716.5000 = 2014/02/28
Mean Anomaly: 336.12173 +/- 0.118
Argument of Peri: 81.16774 +/- 0.157
Long of Asc Node: 121.61105 +/- 0.004
Inclination: 3.61953 +/- 0.000
Eccentricity: 0.12291212 +/- 0.0003
Semi-Major Axis: 45.43139640 +/- 0.0107
Time of Perihelion: 2464135.2857 +/- 52.0
Perihelion: 39.84732723 +/- 0.0166
Aphelion: 51.01546557 +/- 0.0182
Period (y) 306.2262 +/- 0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -40.04082433 +/- 0.0026
Ecliptic Y 5.45978401 +/- 0.0003
Ecliptic Z 1.97602442 +/- 0.0001
Ecliptic XDOT -0.00021972 +/- 0.0000
Ecliptic YDOT -0.00283807 +/- 0.0000
Ecliptic ZDOT 0.00010594 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.45966482 +/- 0.0026
Geocenter to KBO 39.49472553 +/- 0.0026
# Hcoef: 8.30
The following table shows the complete astrometric record for 19CH30. 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 (19CH30) followed by the observatory code and reference code for the source of the astrometry.
2014 02 28.490792 11 37 10.87 +05 35 26.8 19CH30 T09 C~83G8 2014 02 28.505033 11 37 10.80 +05 35 27.3 19CH30 T09 C~83G8 2014 02 28.524138 11 37 10.71 +05 35 27.9 19CH30 T09 C~83G8 2014 02 28.566397 11 37 10.52 +05 35 29.1 19CH30 T09 C~83G8 2018 04 24.36552 11 55 52.27 +03 49 02.4 24.1z 19CH30 T09 C~83G8 2018 04 24.37923 11 55 52.22 +03 49 03.1 24.5z 19CH30 T09 C~83G8 2018 04 24.40683 11 55 52.12 +03 49 03.6 24.7z 19CH30 T09 C~83G8 2019 02 05.53109 12 06 57.30 +02 39 06.4 24.2i 19CH30 T09 C~83G8 2019 02 05.58174 12 06 57.15 +02 39 07.4 23.9i 19CH30 T09 C~83G8 2019 02 05.62229 12 06 57.02 +02 39 08.2 23.9i 19CH30 T09 C~83G8 2019 02 05.62497 12 06 57.02 +02 39 08.4 24.0i 19CH30 T09 C~83G8 2019 02 05.66520 12 06 56.91 +02 39 09.3 23.9i 19CH30 T09 C~83G8 2019 03 03.51493 12 05 20.94 +02 51 00.7 23.8z 19CH30 T09 C~83G8 2019 03 03.52297 12 05 20.90 +02 51 01.1 23.8z 19CH30 T09 C~83G8 2019 03 03.61973 12 05 20.48 +02 51 04.1 23.9z 19CH30 T09 C~83G8 2019 04 04.46785 12 02 55.57 +03 07 10.7 24.7g 19CH30 T09 C~8HR5 2019 04 04.50980 12 02 55.39 +03 07 12.2 24.6g 19CH30 T09 C~8HR5 2019 04 05.53078 12 02 50.82 +03 07 40.9 24.3r 19CH30 T09 C~83G8 2019 04 05.55173 12 02 50.72 +03 07 41.4 24.6r 19CH30 T09 C~83G8 2019 04 05.55382 12 02 50.72 +03 07 41.9 24.4r 19CH30 T09 C~83G8 2019 04 05.57268 12 02 50.63 +03 07 42.2 24.7r 19CH30 T09 C~83G8
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 0.07 0.00 -0.03
2 0.0000 0.00 -0.01 0.00 0.04
3 0.0001 0.00 -0.05 0.00 0.06
4 0.0002 0.00 -0.02 0.00 -0.03
5 4.1502 0.00 -0.03 0.00 -0.27
6 4.1503 0.00 -0.02 0.00 0.14
7 4.1504 0.00 0.01 0.00 0.07
8 4.9365 0.00 -0.14 0.00 0.08
9 4.9366 0.00 -0.09 0.00 -0.10
10 4.9367 0.00 -0.20 0.00 -0.25
11 4.9367 0.00 -0.08 0.00 -0.12
12 4.9368 0.00 0.09 0.00 -0.16
13 5.0076 0.00 0.14 0.00 -0.06
14 5.0076 0.00 0.07 0.00 0.10
15 5.0079 0.00 0.15 0.00 0.16
16 5.0951 0.00 -0.06 0.00 -0.15
17 5.0952 0.00 0.10 0.00 0.16
18 5.0980 0.00 0.01 0.00 -0.01
19 5.0980 0.00 -0.07 0.00 -0.09
20 5.0981 0.00 0.07 0.00 0.35
21 5.0981 0.00 -0.01 0.00 0.12
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.
19CH30 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.097 45.097 45.097 ecceobj 0.117 0.117 0.117 incobj 3.624 3.624 3.624 qmin 39.292 39.285 39.239 qmax 51.585 51.605 51.608 amean 45.287 45.287 45.287 amin 44.917 44.922 44.905 amax 45.690 45.694 45.692 emean 0.115 0.115 0.115 emin 0.101 0.101 0.101 emax 0.130 0.130 0.130 imean 2.195 2.195 2.195 imin 1.570 1.570 1.569 imax 2.838 2.838 2.839 excite_mean 0.122 0.122 0.122 fracstop 1.000 1.000 1.000 cjmean 3.099 3.099 3.099 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 198.9 198.9 198.9 kozaiamp 179.9 180.0 180.0