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: 19CG30
# 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: 11.60 DOF: 36 RMS: 0.13
# Min/Max residuals: -0.25 0.37
# Exact a, adot, b, bdot, g, gdot:
1.499382E-05 2.325684E-02 -8.358895E-07 -9.561534E-04 2.403886E-02 -1.306758E-03
# Covariance matrix:
3.6693E-13 -1.7542E-13 -2.7353E-16 4.2116E-15 -1.0036E-13 -8.6837E-13
-1.7542E-13 2.3947E-12 6.6823E-15 -9.6623E-14 2.7771E-12 1.9967E-11
-2.7353E-16 6.6823E-15 3.6171E-13 -7.3366E-14 8.1353E-15 5.5999E-14
4.2116E-15 -9.6623E-14 -7.3366E-14 2.2163E-14 -1.1174E-13 -8.1236E-13
-1.0036E-13 2.7771E-12 8.1353E-15 -1.1174E-13 3.6871E-12 2.3135E-11
-8.6837E-13 1.9967E-11 5.5999E-14 -8.1236E-13 2.3135E-11 1.6785E-10
# lat0 lon0 xBary yBary zBary JD0
4.327369 175.610601 0.271031 0.071844 -0.948121 2456716.992797
# Heliocentric elements and errors
Epoch: 2456716.5000 = 2014/02/28
Mean Anomaly: 288.42654 +/- 0.071
Argument of Peri: 197.36253 +/- 0.083
Long of Asc Node: 56.29717 +/- 0.003
Inclination: 4.83171 +/- 0.000
Eccentricity: 0.06234158 +/- 0.0006
Semi-Major Axis: 43.24662891 +/- 0.0110
Time of Perihelion: 2477369.1768 +/- 37.7
Perihelion: 40.55056565 +/- 0.0270
Aphelion: 45.94269218 +/- 0.0276
Period (y) 284.4046 +/- 0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -42.28773541 +/- 0.0033
Ecliptic Y 3.51921608 +/- 0.0003
Ecliptic Z 3.13884485 +/- 0.0003
Ecliptic XDOT -0.00006871 +/- 0.0000
Ecliptic YDOT -0.00265471 +/- 0.0000
Ecliptic ZDOT -0.00011969 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.54988905 +/- 0.0033
Geocenter to KBO 41.59937427 +/- 0.0033
# Hcoef: 8.64
The following table shows the complete astrometric record for 19CG30. 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 (19CG30) followed by the observatory code and reference code for the source of the astrometry.
2014 02 28.492019 11 50 47.00 +05 42 55.1 19CG30 T09 C~870V 2014 02 28.506241 11 50 46.94 +05 42 55.6 19CG30 T09 C~870V 2014 02 28.525304 11 50 46.85 +05 42 56.1 19CG30 T09 C~870V 2014 02 28.567436 11 50 46.66 +05 42 57.1 19CG30 T09 C~870V 2018 04 22.370057 12 06 23.66 +03 44 48.0 19CG30 T09 C~870V 2018 04 22.381467 12 06 23.62 +03 44 48.2 19CG30 T09 C~870V 2019 02 05.53784 12 16 20.54 +02 35 41.3 24.1i 19CG30 T09 C~83G7 2019 02 05.55837 12 16 20.47 +02 35 41.5 24.3i 19CG30 T09 C~83G7 2019 02 05.62764 12 16 20.28 +02 35 42.9 24.4i 19CG30 T09 C~83G7 2019 03 03.52028 12 14 50.12 +02 46 44.9 24.1z 19CG30 T09 C~83G7 2019 03 03.52832 12 14 50.08 +02 46 45.1 23.9z 19CG30 T09 C~83G7 2019 03 03.56874 12 14 49.93 +02 46 46.1 24.9z 19CG30 T09 C~83G7 2019 03 03.58484 12 14 49.86 +02 46 46.6 24.5z 19CG30 T09 C~83G7 2019 03 03.62510 12 14 49.68 +02 46 47.9 25.1z 19CG30 T09 C~83G7 2019 04 04.44950 12 12 29.93 +03 01 50.1 25.5g 19CG30 T09 C~83G7 2019 04 04.45934 12 12 29.89 +03 01 50.3 26.2g 19CG30 T09 C~83G7 2019 04 04.49303 12 12 29.75 +03 01 51.0 25.6g 19CG30 T09 C~83G7 2019 04 04.51398 12 12 29.65 +03 01 51.5 25.4g 19CG30 T09 C~83G7 2019 04 05.52240 12 12 25.23 +03 02 18.5 24.8r 19CG30 T09 C~83G8 2019 04 05.55592 12 12 25.09 +03 02 19.4 25.0r 19CG30 T09 C~83G8 2019 04 05.55801 12 12 25.05 +03 02 19.7 25.1r 19CG30 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 0.01
2 0.0000 0.00 0.09 0.00 0.10
3 0.0001 0.00 -0.02 0.00 0.05
4 0.0002 0.00 -0.16 0.00 -0.16
5 4.1448 0.00 -0.03 0.00 0.03
6 4.1448 0.00 0.02 0.00 -0.01
7 4.9365 0.00 0.11 0.00 0.10
8 4.9365 0.00 -0.08 0.00 -0.14
9 4.9367 0.00 -0.04 0.00 -0.25
10 5.0076 0.00 -0.09 0.00 0.07
11 5.0076 0.00 -0.18 0.00 0.04
12 5.0077 0.00 0.11 0.00 -0.10
13 5.0078 0.00 0.07 0.00 -0.06
14 5.0079 0.00 -0.11 0.00 0.11
15 5.0950 0.00 -0.07 0.00 0.06
16 5.0951 0.00 -0.01 0.00 -0.00
17 5.0951 0.00 0.15 0.00 -0.20
18 5.0952 0.00 0.06 0.00 -0.25
19 5.0980 0.00 0.09 0.00 0.11
20 5.0981 0.00 0.21 0.00 0.13
21 5.0981 0.00 -0.25 0.00 0.37
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.
19CG30 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.957 42.957 42.957 ecceobj 0.061 0.061 0.061 incobj 4.833 4.833 4.833 qmin 39.889 39.890 39.889 qmax 46.598 46.598 46.598 amean 43.146 43.146 43.146 amin 42.818 42.818 42.820 amax 43.498 43.498 43.496 emean 0.052 0.052 0.052 emin 0.032 0.031 0.032 emax 0.072 0.072 0.072 imean 3.052 3.052 3.052 imin 2.136 2.136 2.136 imax 4.042 4.042 4.042 excite_mean 0.074 0.074 0.074 fracstop 1.000 1.000 1.000 cjmean 3.085 3.085 3.085 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 184.2 184.4 184.3 kozaiamp 180.0 179.9 180.0