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: 19TL8 # Created Sun Dec 22 02:11:09 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 39 observations of 39 # Arc: 3.26y # First observation: 2016/08/07 # Last observation: 2019/11/09 # Chi-squared of fit: 35.21 DOF: 72 RMS: 0.17 # Min/Max residuals: -0.48 0.42 # Exact a, adot, b, bdot, g, gdot: 4.280670E-05 4.872176E-01 1.446889E-05 1.840623E-01 1.846504E-01 -1.549696E-01 # Covariance matrix: 1.9870E-12 -4.2118E-07 8.8993E-13 -1.8862E-07 -1.4746E-15 2.7195E-07 -4.2118E-07 1.3185E-01 -1.9501E-07 5.9221E-02 4.8457E-10 -8.5399E-02 8.8993E-13 -1.9501E-07 4.5774E-13 -8.8982E-08 -6.8614E-16 1.2633E-07 -1.8862E-07 5.9221E-02 -8.8982E-08 2.6650E-02 2.1772E-10 -3.8370E-02 -1.4746E-15 4.8457E-10 -6.8614E-16 2.1772E-10 1.7893E-18 -3.1396E-10 2.7195E-07 -8.5399E-02 1.2633E-07 -3.8370E-02 -3.1396E-10 5.5330E-02 # lat0 lon0 xBary yBary zBary JD0 -14.904301 -44.153553 0.008187 -0.260857 -0.980524 2457607.939099 # Heliocentric elements and errors Epoch: 2457608.5000 = 2016/08/08 Mean Anomaly: 342.52656 +/- 0.000 Argument of Peri: 19.42048 +/- 0.000 Long of Asc Node: 344.85489 +/- 0.000 Inclination: 24.61047 +/- 0.000 Eccentricity: 0.47348190 +/- 0.0039 Semi-Major Axis: 10.71312707 +/- 0.0000 Time of Perihelion: 2458230.1539 +/- 0.0 Perihelion: 5.64065532 +/- 0.0415 Aphelion: 15.78559881 +/- 0.0415 Period (y) 35.0657 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 4.47362947 +/- 0.0000 Ecliptic Y -4.36095994 +/- 0.0000 Ecliptic Z -1.39280915 +/- 0.0000 Ecliptic XDOT 0.00394402 +/- 0.0000 Ecliptic YDOT 0.00623388 +/- 0.0000 Ecliptic ZDOT 0.00322829 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 6.40094568 +/- 0.0000 Geocenter to KBO 5.41573558 +/- 0.0000 # Hcoef: 13.67
The following table shows the complete astrometric record for 19TL8. 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 (19TL8) followed by the observatory code and reference code for the source of the astrometry.
2016 08 07.43831 21 33 31.228 -30 14 52.92 21.9w 19TL8 F51 C~59vD 2016 08 07.45022 21 33 30.867 -30 14 53.03 21.9w 19TL8 F51 C~59vD 2016 08 07.46219 21 33 30.519 -30 14 53.74 21.5w 19TL8 F51 C~59vD 2016 08 07.47410 21 33 30.173 -30 14 53.86 21.7w 19TL8 F51 C~59vD 2017 07 30.48976 23 18 28.924 -06 29 16.51 21.3w 19TL8 F51 C~3Qz8 2017 07 30.50177 23 18 28.722 -06 29 15.99 21.6w 19TL8 F51 C~3Qz8 2017 07 30.51377 23 18 28.529 -06 29 15.42 21.5w 19TL8 F51 C~3Qz8 2017 07 30.52569 23 18 28.299 -06 29 14.95 21.3w 19TL8 F51 C~3Qz8 2017 08 03.54041 23 17 17.629 -06 26 51.88 21.2w 19TL8 F51 C~3Qz8 2017 08 03.55120 23 17 17.424 -06 26 51.68 21.4w 19TL8 F51 C~3Qz8 2017 08 03.56195 23 17 17.214 -06 26 51.45 21.4w 19TL8 F51 C~3Qz8 2017 09 12.31893 23 00 14.218 -06 26 04.35 20.9w 19TL8 F51 C~59vD 2017 09 12.33056 23 00 13.876 -06 26 04.35 21.0w 19TL8 F51 C~59vD 2017 09 12.34217 23 00 13.543 -06 26 04.48 21.0w 19TL8 F51 C~59vD 2017 09 12.35382 23 00 13.212 -06 26 04.67 21.1w 19TL8 F51 C~59vD 2017 09 14.40666 22 59 14.527 -06 26 20.85 21.1w 19TL8 F51 C~3Qz8 2017 09 14.41865 22 59 14.177 -06 26 20.90 21.1w 19TL8 F51 C~3Qz8 2017 09 14.43058 22 59 13.835 -06 26 21.01 21.1w 19TL8 F51 C~3Qz9 2017 09 14.44251 22 59 13.485 -06 26 21.03 21.0w 19TL8 F51 C~3Qz9 2018 11 09.37907 00 23 19.190 +21 13 21.13 21.1w 19TL8 F52 C~3Qz9 2018 11 09.39265 00 23 18.934 +21 13 19.83 21.3w 19TL8 F52 C~3Qz9 2018 11 09.40630 00 23 18.676 +21 13 18.55 21.3w 19TL8 F52 C~3Qz9 2018 11 09.41990 00 23 18.423 +21 13 17.02 21.2w 19TL8 F52 C~3Qz9 2019 10 14.490262 02 45 31.697 +42 49 44.21 22.2G 19TL8 F52 C~3Qz9 2019 10 14.497446 02 45 31.487 +42 49 45.06 21.6G 19TL8 F52 C~3Qz9 2019 10 14.504542 02 45 31.282 +42 49 45.57 21.9G 19TL8 F52 C~3Qz9 2019 10 14.511683 02 45 31.091 +42 49 45.80 21.6G 19TL8 F52 C~3Qz9 2019 10 26.526799 02 39 17.137 +42 59 38.92 22.2G 19TL8 F51 C~3Qz9 2019 10 26.538364 02 39 16.736 +42 59 38.82 21.6G 19TL8 F51 C~3Qz9 2019 10 26.549923 02 39 16.350 +42 59 39.14 21.8G 19TL8 F51 C~3Qz9 2019 11 01.457502 02 35 59.427 +42 58 56.33 22.2w 19TL8 F51 C~3Qz9 2019 11 01.469503 02 35 59.014 +42 58 56.01 22.0w 19TL8 F51 C~3Qz9 2019 11 01.481521 02 35 58.602 +42 58 55.71 22.0w 19TL8 F51 C~3Qz9 2019 11 04.31721 02 34 23.15 +42 57 18.5 21.3R 19TL8 695 C~3Qz9 2019 11 04.32452 02 34 22.89 +42 57 18.2 21.5R 19TL8 695 C~3Qz9 2019 11 04.33183 02 34 22.64 +42 57 17.7 21.1R 19TL8 695 C~3Qz9 2019 11 09.425415 02 31 32.072 +42 52 23.55 21.4G 19TL8 F52 C~3Qz9 2019 11 09.426078 02 31 32.034 +42 52 23.21 21.6G 19TL8 F52 C~3Qz9 2019 11 09.437140 02 31 31.622 +42 52 22.97 21.4G 19TL8 F52 C~3Qz9
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 -0.35 0.00 0.18
2 0.0000 0.00 -0.33 0.00 0.37
3 0.0001 0.00 -0.09 0.00 -0.04
4 0.0001 0.00 0.16 0.00 0.13
5 0.9776 0.00 0.02 0.00 -0.14
6 0.9776 0.00 0.08 0.00 -0.11
7 0.9776 0.00 0.28 0.00 -0.02
8 0.9777 0.00 -0.10 0.00 -0.03
9 0.9886 0.00 0.06 0.00 0.05
10 0.9887 0.00 0.12 0.00 -0.08
11 0.9887 0.00 0.09 0.00 -0.18
12 1.0976 0.00 -0.03 0.00 0.00
13 1.0976 0.00 -0.05 0.00 0.11
14 1.0976 0.00 0.06 0.00 0.08
15 1.0976 0.00 0.21 0.00 -0.00
16 1.1033 0.00 -0.07 0.00 -0.07
17 1.1033 0.00 -0.07 0.00 -0.03
18 1.1033 0.00 0.02 0.00 -0.06
19 1.1034 0.00 -0.01 0.00 0.00
20 2.2558 0.00 0.15 0.00 -0.09
21 2.2559 0.00 0.10 0.00 -0.03
22 2.2559 0.00 0.03 0.00 0.06
23 2.2559 0.00 0.00 0.00 -0.10
24 3.1843 0.00 -0.21 0.00 -0.02
25 3.1843 0.00 -0.16 0.00 0.21
26 3.1843 0.00 -0.08 0.00 0.11
27 3.1843 0.00 0.24 0.00 -0.27
28 3.2172 0.00 0.20 0.00 0.09
29 3.2172 0.00 0.02 0.00 -0.10
30 3.2173 0.00 0.06 0.00 0.13
31 3.2335 0.00 0.00 0.00 -0.02
32 3.2335 0.00 0.02 0.00 -0.01
33 3.2335 0.00 0.05 0.00 0.02
34 3.2413 0.00 -0.08 0.00 0.40
35 3.2413 0.00 -0.20 0.00 0.42
36 3.2413 0.00 -0.17 0.00 0.24
37 3.2553 0.00 0.31 0.00 -0.19
38 3.2553 0.00 0.08 0.00 -0.48
39 3.2553 0.00 -0.45 0.00 0.09
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.
19TL8 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 10.707 10.707 10.707 ecceobj 0.475 0.475 0.475 incobj 24.646 24.646 24.646 qmin 5.233 5.290 5.616 qmax 16.840 40.291 17.533 amean 10.844 12.605 11.031 amin 10.636 10.463 10.477 amax 11.062 23.057 11.810 emean 0.452 0.522 0.442 emin 0.405 0.404 0.402 emax 0.522 0.747 0.487 imean 24.686 22.171 24.800 imin 20.500 16.836 22.299 imax 26.078 26.075 27.726 excite_mean 0.617 0.650 0.610 fracstop 0.002 0.004 0.004 cjmean 3.746 3.474 3.718 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 211.5 161.7 153.1 kozaiamp 177.2 176.9 177.9