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: 19TX7 # Created Sun Dec 22 02:11:09 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 30 observations of 30 # Arc: 2.90y # First observation: 2017/08/17 # Last observation: 2020/07/11 # Chi-squared of fit: 41.19 DOF: 54 RMS: 0.21 # Min/Max residuals: -0.64 0.69 # Exact a, adot, b, bdot, g, gdot: 4.752694E-05 4.818269E-01 4.375942E-06 3.861751E-02 1.610709E-01 -1.367421E-01 # Covariance matrix: 1.1782E-07 -3.5957E-05 3.2259E-09 -3.7033E-06 -4.5704E-06 -1.8726E-05 -3.5957E-05 1.1392E-02 -9.8585E-07 1.1748E-03 1.3941E-03 5.9593E-03 3.2259E-09 -9.8585E-07 8.8889E-11 -1.0328E-07 -1.2513E-07 -5.1364E-07 -3.7033E-06 1.1748E-03 -1.0328E-07 1.6456E-04 1.4358E-04 6.1762E-04 -4.5704E-06 1.3941E-03 -1.2513E-07 1.4358E-04 1.7729E-04 7.2601E-04 -1.8726E-05 5.9593E-03 -5.1364E-07 6.1762E-04 7.2601E-04 3.1354E-03 # lat0 lon0 xBary yBary zBary JD0 -1.639486 -33.393084 0.032870 -0.028833 -1.010415 2457982.876991 # Heliocentric elements and errors Epoch: 2457982.5000 = 2017/08/17 Mean Anomaly: 357.35011 +/- 0.002 Argument of Peri: 19.45389 +/- 0.002 Long of Asc Node: 343.12919 +/- 0.001 Inclination: 4.85696 +/- 0.015 Eccentricity: 0.79641770 +/- 0.0000 Semi-Major Axis: 32.40656104 +/- 0.0000 Time of Perihelion: 2458478.4897 +/- 0.3 Perihelion: 6.59740239 +/- 0.0012 Aphelion: 58.21571968 +/- 0.0012 Period (y) 184.4835 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 6.00489815 +/- 0.0000 Ecliptic Y -4.00452956 +/- 0.0000 Ecliptic Z -0.17754976 +/- 0.0000 Ecliptic XDOT 0.00258823 +/- 0.0000 Ecliptic YDOT 0.00810057 +/- 0.0000 Ecliptic ZDOT 0.00072254 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 7.21995682 +/- 0.0000 Geocenter to KBO 6.20855718 +/- 0.0000 # Hcoef: 13.58
The following table shows the complete astrometric record for 19TX7. 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 (19TX7) followed by the observatory code and reference code for the source of the astrometry.
2017 08 17.37619 21 57 38.300 -14 11 13.45 22.1w 19TX7 F51 C~40nh 2017 08 17.39096 21 57 38.006 -14 11 14.46 22.2w 19TX7 F51 C~40nh 2017 08 17.40572 21 57 37.711 -14 11 15.59 22.1w 19TX7 F51 C~40nh 2019 09 24.53746 01 35 03.261 +13 48 07.70 21.8w 19TX7 F51 C~3LVS 2019 09 24.55082 01 35 03.027 +13 48 06.75 22.0w 19TX7 F51 C~3LVS 2019 09 24.56417 01 35 02.793 +13 48 06.09 21.9w 19TX7 F51 C~3LVS 2019 10 07.53177 01 31 09.347 +13 32 51.43 21.6w 19TX7 F51 C~3LVS 2019 10 07.54409 01 31 09.106 +13 32 50.55 21.9w 19TX7 F51 C~3LVS 2019 10 07.55636 01 31 08.861 +13 32 49.64 21.9w 19TX7 F51 C~3LVS 2019 10 07.56867 01 31 08.625 +13 32 48.48 22.0w 19TX7 F51 C~3LVS 2019 10 08.42237 01 30 52.14 +13 31 37.5 21.8R 19TX7 691 C~3LVS 2019 10 08.42964 01 30 52.01 +13 31 36.9 21.9R 19TX7 691 C~3LVS 2019 10 08.43691 01 30 51.88 +13 31 36.4 21.6R 19TX7 691 C~3LVS 2019 10 10.22425 01 30 17.23 +13 29 03.9 21.6R 19TX7 695 C~3LVS 2019 10 10.23524 01 30 17.02 +13 29 02.8 21.7R 19TX7 695 C~3LVS 2019 10 10.24623 01 30 16.80 +13 29 02.2 21.3R 19TX7 695 C~3LVS 2019 10 27.440010 01 24 39.108 +13 01 56.97 21.9w 19TX7 F51 C~59vD 2019 10 27.452726 01 24 38.863 +13 01 55.81 21.8w 19TX7 F51 C~59vD 2019 10 27.465522 01 24 38.617 +13 01 54.50 21.7w 19TX7 F51 C~59vD 2019 10 27.478206 01 24 38.361 +13 01 53.14 22.0w 19TX7 F51 C~59vD 2019 11 27.140060 01 17 08.655 +12 18 23.00 22.0G 19TX7 G37 C~3d30 2019 11 27.154890 01 17 08.563 +12 18 22.09 19TX7 G37 C~3d30 2020 01 18.095140 01 21 29.472 +12 30 26.62 19TX7 G37 C~3k8G 2020 01 18.131930 01 21 30.179 +12 30 29.80 19TX7 G37 C~3k8G 2020 01 30.223630 01 25 48.160 +12 52 19.22 22.4G 19TX7 568 C~3k8G 2020 01 30.226891 01 25 48.237 +12 52 19.58 22.5G 19TX7 568 C~3k8G 2020 02 26.237794 01 38 52.813 +14 01 41.64 23.0G 19TX7 568 C~3k8G 2020 02 26.241068 01 38 52.926 +14 01 42.21 22.9G 19TX7 568 C~3k8G 2020 07 11.605442 03 05 36.768 +21 32 52.93 21.4G 19TX7 568 C~40nh 2020 07 11.608705 03 05 36.859 +21 32 53.58 21.9G 19TX7 568 C~40nh
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 -0.00 0.00 -0.13
2 0.0000 0.00 0.00 0.00 0.05
3 0.0001 0.00 -0.01 0.00 0.11
4 2.1031 0.00 0.29 0.00 -0.06
5 2.1031 0.00 0.18 0.00 -0.25
6 2.1032 0.00 0.06 0.00 -0.14
7 2.1387 0.00 -0.04 0.00 -0.31
8 2.1387 0.00 -0.00 0.00 -0.16
9 2.1388 0.00 -0.04 0.00 -0.04
10 2.1388 0.00 0.06 0.00 -0.17
11 2.1411 0.00 -0.41 0.00 0.19
12 2.1411 0.00 -0.20 0.00 0.21
13 2.1412 0.00 0.01 0.00 0.33
14 2.1461 0.00 -0.10 0.00 0.15
15 2.1461 0.00 0.05 0.00 -0.01
16 2.1461 0.00 0.05 0.00 0.33
17 2.1932 0.00 0.04 0.00 -0.18
18 2.1932 0.00 0.10 0.00 -0.08
19 2.1933 0.00 0.17 0.00 -0.12
20 2.1933 0.00 0.06 0.00 -0.21
21 2.2772 0.00 -0.30 0.00 -0.03
22 2.2773 0.00 0.35 0.00 -0.05
23 2.4195 0.00 -0.64 0.00 0.69
24 2.4196 0.00 -0.05 0.00 0.52
25 2.4527 0.00 0.08 0.00 -0.07
26 2.4527 0.00 0.08 0.00 -0.11
27 2.5267 0.00 0.06 0.00 -0.07
28 2.5267 0.00 0.12 0.00 -0.09
29 2.9000 0.00 0.03 0.00 -0.17
30 2.9000 0.00 0.01 0.00 -0.01
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.
19TX7 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 32.304 32.304 32.305 ecceobj 0.798 0.798 0.798 incobj 4.862 4.862 4.862 qmin 6.541 6.477 6.515 qmax 65.634 80.136 61.436 amean 34.032 37.567 31.569 amin 31.187 32.304 28.120 amax 36.109 43.346 34.055 emean 0.805 0.823 0.790 emin 0.786 0.798 0.768 emax 0.818 0.849 0.804 imean 6.336 6.282 6.040 imin 5.897 5.897 5.897 imax 6.731 6.774 6.209 excite_mean 0.813 0.830 0.797 fracstop 0.001 0.001 0.000 cjmean 2.138 2.062 2.202 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 29.3 33.0 24.5 kozaiamp 8.2 12.1 5.3