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: 13TX171 # Created Tue Jan 21 02:09:52 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 26 observations of 26 # Arc: 5.22y # First observation: 2013/09/09 # Last observation: 2018/11/27 # Chi-squared of fit: 6.97 DOF: 46 RMS: 0.09 # Min/Max residuals: -0.22 0.19 # Exact a, adot, b, bdot, g, gdot: 1.772482E-05 3.146610E-02 -5.266270E-06 -1.040913E-02 2.816469E-02 2.364150E-05 # Covariance matrix: 3.8205E-13 -9.3831E-14 -1.9399E-14 2.1729E-14 2.3878E-13 -4.3132E-13 -9.3831E-14 1.6587E-13 3.6230E-14 -5.6176E-14 8.1259E-14 1.0813E-12 -1.9399E-14 3.6230E-14 1.6603E-13 -5.8192E-14 1.1021E-14 2.6985E-13 2.1729E-14 -5.6176E-14 -5.8192E-14 4.1093E-14 -2.7760E-14 -4.1583E-13 2.3878E-13 8.1259E-14 1.1021E-14 -2.7760E-14 3.8547E-13 5.1768E-13 -4.3132E-13 1.0813E-12 2.6985E-13 -4.1583E-13 5.1768E-13 8.0084E-12 # lat0 lon0 xBary yBary zBary JD0 -7.089241 7.858016 0.369255 -0.115683 -0.930903 2456544.713858 # Heliocentric elements and errors Epoch: 2456544.5000 = 2013/09/09 Mean Anomaly: 358.32054 +/- 0.012 Argument of Peri: 204.10401 +/- 0.023 Long of Asc Node: 167.38905 +/- 0.000 Inclination: 19.60003 +/- 0.000 Eccentricity: 0.27834993 +/- 0.0001 Semi-Major Axis: 50.47716319 +/- 0.0066 Time of Perihelion: 2457155.5955 +/- 25.9 Perihelion: 36.42684843 +/- 0.0062 Aphelion: 64.52747795 +/- 0.0093 Period (y) 358.6333 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.88251498 +/- 0.0008 Ecliptic Y 4.58270544 +/- 0.0001 Ecliptic Z -4.38210783 +/- 0.0001 Ecliptic XDOT -0.00054582 +/- 0.0000 Ecliptic YDOT 0.00301214 +/- 0.0000 Ecliptic ZDOT -0.00100427 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.43843443 +/- 0.0008 Geocenter to KBO 35.50548934 +/- 0.0008 # Hcoef: 7.43
The following table shows the complete astrometric record for 13TX171. 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 (13TX171) followed by the observatory code and reference code for the source of the astrometry.
2013 09 09.21308 00 40 03.172 -03 23 51.11 23.0g 13TX171 W84 C~4yR8 2013 10 04.158218 00 38 05.50 -03 39 54.7 23.9g 13TX171 W84 C~352D 2013 10 13.22535 00 37 21.349 -03 45 18.20 22.6i 13TX171 W84 C~4yR8 2013 10 13.22672 00 37 21.330 -03 45 17.92 23.2z 13TX171 W84 C~4yR8 2013 11 08.15030 00 35 28.488 -03 57 35.17 22.9r 13TX171 W84 C~4yR8 2013 11 23.13775 00 34 41.248 -04 01 46.62 22.9i 13TX171 W84 C~4yR8 2014 11 14.057153 00 42 40.75 -03 49 48.1 23.1r 13TX171 W84 C~352D 2014 11 14.05768 00 42 40.747 -03 49 48.15 23.2r 13TX171 W84 C~4yR8 2014 11 14.12549 00 42 40.505 -03 49 49.42 22.7i 13TX171 W84 C~4yR8 2014 11 15.12086 00 42 37.091 -03 50 07.34 23.2z 13TX171 W84 C~4yR8 2014 11 27.063519 00 42 02.25 -03 52 50.7 22.5z 13TX171 W84 C~352D 2014 11 27.06404 00 42 02.262 -03 52 50.98 22.7z 13TX171 W84 C~4yR8 2015 12 05.08831 00 49 14.50 -03 43 59.5 23.1r 13TX171 W84 C~3clO 2016 08 26.30763 01 03 34.860 -02 45 01.61 23.3r 13TX171 W84 C~4yR8 2016 08 26.30899 01 03 34.863 -02 45 01.58 22.6i 13TX171 W84 C~4yR8 2016 10 29.23021 00 58 48.439 -03 23 51.50 22.9r 13TX171 W84 C~4yR8 2016 10 29.23157 00 58 48.438 -03 23 51.55 22.7i 13TX171 W84 C~4yR8 2016 10 29.23296 00 58 48.414 -03 23 51.83 23.7g 13TX171 W84 C~4yR8 2016 11 06.20939 00 58 13.526 -03 27 16.94 22.6i 13TX171 W84 C~4yR8 2016 11 06.21077 00 58 13.527 -03 27 17.10 22.8r 13TX171 W84 C~4yR8 2016 11 07.20345 00 58 09.397 -03 27 40.25 23.9g 13TX171 W84 C~4yR8 2016 11 08.15923 00 58 05.468 -03 28 01.68 22.8z 13TX171 W84 C~4yR8 2018 10 19.15760 01 14 45.318 -02 57 31.36 22.5z 13TX171 W84 C~4yR8 2018 11 07.20181 01 13 15.668 -03 06 38.76 23.2r 13TX171 W84 C~4yR8 2018 11 15.05989 01 12 42.896 -03 09 26.86 22.6i 13TX171 W84 C~4yR8 2018 11 27.10561 01 12 00.182 -03 12 27.01 23.8g 13TX171 W84 C~4yR8
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 0.04 0.00 -0.11
2 0.0683 0.00 0.03 0.00 0.06
3 0.0931 0.00 0.03 0.00 -0.14
4 0.0931 0.00 -0.16 0.00 0.19
5 0.1641 0.00 0.03 0.00 0.01
6 0.2051 0.00 -0.02 0.00 0.01
7 1.1796 0.00 0.12 0.00 0.06
8 1.1796 0.00 0.10 0.00 0.02
9 1.1798 0.00 0.07 0.00 -0.01
10 1.1825 0.00 -0.10 0.00 0.00
11 1.2152 0.00 -0.14 0.00 0.13
12 1.2152 0.00 0.06 0.00 -0.15
13 2.2365 0.00 -0.02 0.00 0.14
14 2.9626 0.00 -0.01 0.00 -0.09
15 2.9626 0.00 0.10 0.00 -0.01
16 3.1376 0.00 0.02 0.00 0.04
17 3.1376 0.00 0.10 0.00 0.02
18 3.1376 0.00 -0.17 0.00 -0.22
19 3.1595 0.00 0.03 0.00 0.10
20 3.1595 0.00 0.13 0.00 -0.03
21 3.1622 0.00 0.03 0.00 -0.14
22 3.1648 0.00 -0.16 0.00 0.06
23 5.1087 0.00 -0.01 0.00 0.00
24 5.1608 0.00 0.06 0.00 -0.05
25 5.1823 0.00 0.01 0.00 0.04
26 5.2153 0.00 -0.04 0.00 0.11
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.
13TX171 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 50.831 50.831 50.831 ecceobj 0.284 0.284 0.284 incobj 19.550 19.550 19.550 qmin 35.910 35.910 35.910 qmax 65.550 65.542 65.569 amean 50.415 50.415 50.415 amin 49.930 49.930 49.929 amax 51.012 51.012 51.012 emean 0.272 0.272 0.272 emin 0.256 0.256 0.256 emax 0.286 0.286 0.286 imean 19.180 19.180 19.180 imin 18.729 18.728 18.729 imax 19.729 19.730 19.729 excite_mean 0.426 0.426 0.426 fracstop 1.000 1.000 1.000 cjmean 2.949 2.949 2.949 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 197.0 197.1 196.9 kozaiamp 180.0 180.0 180.0