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: 19CT31
# Created Sun Dec 22 02:11:04 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 26 observations of 26
# Arc: 5.02y
# First observation: 2014/02/28
# Last observation: 2019/03/08
# Chi-squared of fit: 14.74 DOF: 46 RMS: 0.13
# Min/Max residuals: -0.41 0.27
# Exact a, adot, b, bdot, g, gdot:
1.410319E-05 1.924381E-02 -1.131054E-06 -8.370864E-04 2.176841E-02 2.550587E-03
# Covariance matrix:
3.5742E-13 -2.5396E-13 -3.7814E-15 8.2599E-15 -2.3827E-13 -1.9478E-12
-2.5396E-13 6.9505E-13 1.3517E-14 -2.9610E-14 1.1239E-12 7.0166E-12
-3.7814E-15 1.3517E-14 2.9025E-13 -6.5444E-14 2.2412E-14 1.4010E-13
8.2599E-15 -2.9610E-14 -6.5444E-14 1.9375E-14 -4.9216E-14 -3.0691E-13
-2.3827E-13 1.1239E-12 2.2412E-14 -4.9216E-14 2.2574E-12 1.1712E-11
-1.9478E-12 7.0166E-12 1.4010E-13 -3.0691E-13 1.1712E-11 7.2734E-11
# lat0 lon0 xBary yBary zBary JD0
1.632731 171.968630 0.211206 0.027626 -0.965479 2456716.927384
# Heliocentric elements and errors
Epoch: 2456716.5000 = 2014/02/28
Mean Anomaly: 103.86361 +/- 0.060
Argument of Peri: 28.66778 +/- 0.054
Long of Asc Node: 24.56370 +/- 0.004
Inclination: 2.94553 +/- 0.000
Eccentricity: 0.13793504 +/- 0.0004
Semi-Major Axis: 44.67416718 +/- 0.0052
Time of Perihelion: 2425250.3191 +/- 18.9
Perihelion: 38.51203415 +/- 0.0181
Aphelion: 50.83630021 +/- 0.0185
Period (y) 298.6021 +/- 0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -46.39741030 +/- 0.0031
Ecliptic Y 6.76121579 +/- 0.0004
Ecliptic Z 1.30884443 +/- 0.0001
Ecliptic XDOT -0.00066440 +/- 0.0000
Ecliptic YDOT -0.00235433 +/- 0.0000
Ecliptic ZDOT -0.00009597 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.90563904 +/- 0.0031
Geocenter to KBO 45.93808545 +/- 0.0032
# Hcoef: 7.62
The following table shows the complete astrometric record for 19CT31. 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 (19CT31) followed by the observatory code and reference code for the source of the astrometry.
2014 02 28.426606 11 33 04.78 +04 41 09.5 19CT31 T09 C~8Q5P 2014 02 28.441375 11 33 04.72 +04 41 09.8 19CT31 T09 C~8Q5P 2014 02 28.462489 11 33 04.63 +04 41 10.4 19CT31 T09 C~8Q5P 2014 02 28.477996 11 33 04.57 +04 41 10.7 19CT31 T09 C~8Q5P 2016 03 17.426480 11 39 50.87 +03 51 07.6 19CT31 T09 C~8Q5P 2016 03 17.546800 11 39 50.37 +03 51 11.0 19CT31 T09 C~8Q5P 2016 03 17.569014 11 39 50.27 +03 51 11.5 19CT31 T09 C~8Q5P 2018 03 18.46308 11 47 40.78 +02 54 02.3 24.1i 19CT31 T09 C~8Q5P 2018 03 18.49223 11 47 40.67 +02 54 03.0 23.8i 19CT31 T09 C~8Q5P 2018 03 18.50838 11 47 40.59 +02 54 03.7 23.9i 19CT31 T09 C~8Q5P 2018 03 18.56536 11 47 40.36 +02 54 05.0 24.3i 19CT31 T09 C~8Q5P 2018 04 24.40148 11 45 23.39 +03 08 08.8 23.6z 19CT31 T09 C~8Q5P 2018 04 24.43185 11 45 23.30 +03 08 09.8 23.8z 19CT31 T09 C~8Q5P 2018 04 24.44791 11 45 23.25 +03 08 09.8 23.2z 19CT31 T09 C~8Q5P 2018 04 24.48803 11 45 23.13 +03 08 10.7 24.0z 19CT31 T09 C~8Q5P 2019 02 04.58875 11 54 07.12 +02 08 52.6 25.8g 19CT31 T09 C~8HR5 2019 02 04.62048 11 54 07.02 +02 08 52.6 25.6g 19CT31 T09 C~8HR5 2019 02 04.66250 11 54 06.90 +02 08 53.6 25.5g 19CT31 T09 C~8HR5 2019 02 05.45789 11 54 04.70 +02 09 09.1 24.7i 19CT31 T09 C~8HR5 2019 02 05.49812 11 54 04.57 +02 09 09.8 24.7i 19CT31 T09 C~8HR5 2019 02 05.51425 11 54 04.54 +02 09 09.9 24.2i 19CT31 T09 C~8HR5 2019 03 02.51880 11 52 39.19 +02 18 36.1 23.3y 19CT31 T09 C~8HR5 2019 03 02.56189 11 52 39.02 +02 18 37.1 23.6y 19CT31 T09 C~8HR5 2019 03 02.60285 11 52 38.85 +02 18 38.3 23.9y 19CT31 T09 C~8HR5 2019 03 08.36022 11 52 16.28 +02 21 04.7 24.0r 19CT31 T09 C~8HR5 2019 03 08.39383 11 52 16.15 +02 21 05.5 24.8r 19CT31 T09 C~8HR5
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 0.02 0.00 0.11
2 0.0000 0.00 0.02 0.00 0.03
3 0.0001 0.00 -0.04 0.00 0.09
4 0.0001 0.00 0.01 0.00 -0.01
5 2.0479 0.00 0.05 0.00 -0.29
6 2.0482 0.00 0.05 0.00 0.00
7 2.0483 0.00 -0.07 0.00 -0.07
8 4.0494 0.00 -0.17 0.00 -0.07
9 4.0495 0.00 -0.01 0.00 -0.13
10 4.0495 0.00 -0.21 0.00 0.16
11 4.0497 0.00 -0.13 0.00 -0.01
12 4.1505 0.00 -0.02 0.00 -0.19
13 4.1506 0.00 0.06 0.00 0.27
14 4.1506 0.00 0.06 0.00 -0.02
15 4.1508 0.00 0.13 0.00 0.15
16 4.9341 0.00 0.03 0.00 0.19
17 4.9341 0.00 -0.12 0.00 -0.41
18 4.9343 0.00 -0.12 0.00 -0.21
19 4.9364 0.00 0.13 0.00 0.13
20 4.9365 0.00 -0.07 0.00 0.05
21 4.9366 0.00 0.18 0.00 -0.16
22 5.0050 0.00 0.02 0.00 0.11
23 5.0052 0.00 0.01 0.00 0.03
24 5.0053 0.00 -0.13 0.00 0.20
25 5.0210 0.00 0.08 0.00 0.09
26 5.0211 0.00 0.17 0.00 0.02
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.
19CT31 quality flag:3 Type: 9:5EEEE 9:5EEEE 9:5EEEE axisobj 44.405 44.405 44.405 ecceobj 0.141 0.141 0.141 incobj 2.954 2.954 2.954 qmin 37.830 37.828 37.831 qmax 51.711 51.717 51.708 amean 44.555 44.555 44.555 amin 44.149 44.149 44.150 amax 45.017 45.016 45.018 emean 0.138 0.138 0.138 emin 0.128 0.128 0.128 emax 0.149 0.149 0.149 imean 2.659 2.658 2.659 imin 1.937 1.936 1.937 imax 3.337 3.337 3.337 excite_mean 0.146 0.146 0.146 fracstop 1.000 1.000 1.000 cjmean 3.082 3.082 3.082 libcent 0 177.7 177.3 177.8 libamp 0 104.9 104.9 104.9 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 171.8 171.8 171.9 kozaiamp 180.0 179.9 180.0