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: 15TG363 # Created Fri Apr 26 01:17:30 2024 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 0.97y # First observation: 2015/10/10 # Last observation: 2016/09/29 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.020390 0.000000 -0.000162 0.022114 0.000000 # Chi-squared of fit: 0.59 DOF: 22 RMS: 0.04 # Min/Max residuals: -0.06 0.08 # Exact a, adot, b, bdot, g, gdot: 1.416719E-05 2.037634E-02 -5.697460E-08 -1.607483E-04 2.212383E-02 -1.331580E-03 # Covariance matrix: 5.1534E-13 1.3889E-11 1.3691E-14 -5.6151E-14 9.7873E-12 6.8229E-10 1.3889E-11 5.3222E-09 1.4151E-12 1.3763E-11 1.1326E-09 2.3240E-07 1.3691E-14 1.4151E-12 1.8668E-13 -1.9321E-13 5.3237E-13 6.4090E-11 -5.6151E-14 1.3763E-11 -1.9321E-13 5.2771E-13 7.7713E-13 5.7970E-10 9.7873E-12 1.1326E-09 5.3237E-13 7.7713E-13 3.9888E-10 5.1024E-08 6.8229E-10 2.3240E-07 6.4090E-11 5.7970E-10 5.1024E-08 1.0164E-05 # lat0 lon0 xBary yBary zBary JD0 -15.949033 26.247882 0.167598 -0.271413 -0.950332 2457305.986387 # Heliocentric elements and errors Epoch: 2457300.5000 = 2015/10/05 Mean Anomaly: 267.64325 +/- 19.926 Argument of Peri: 8.58166 +/- 17.615 Long of Asc Node: 117.94417 +/- 0.187 Inclination: 15.62126 +/- 0.001 Eccentricity: 0.07108162 +/- 0.1532 Semi-Major Axis: 45.78598661 +/- 0.7607 Time of Perihelion: 2486331.5956 +/- 6221.6 Perihelion: 42.53144459 +/- 7.0494 Aphelion: 49.04052862 +/- 7.0611 Period (y) 309.8183 +/- 7.72 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 39.93562152 +/- 0.0352 Ecliptic Y 19.50702656 +/- 0.0173 Ecliptic Z -12.42020205 +/- 0.0112 Ecliptic XDOT -0.00126384 +/- 0.0003 Ecliptic YDOT 0.00218256 +/- 0.0002 Ecliptic ZDOT 0.00002620 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 46.14801589 +/- 0.0315 Geocenter to KBO 45.20012670 +/- 0.0408 # Hcoef: 7.88
The following table shows the complete astrometric record for 15TG363. 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 (15TG363) followed by the observatory code and reference code for the source of the astrometry.
2015 10 10.485598 02 00 18.617 -04 45 31.48 24.2r 15TG363 568 C~2TuW 2015 10 10.490606 02 00 18.590 -04 45 31.66 24.3r 15TG363 568 C~2TuW 2015 10 10.590069 02 00 18.177 -04 45 34.33 24.4r 15TG363 568 C~2TuW 2015 10 14.472157 02 00 02.265 -04 47 16.29 24.9g 15TG363 568 C~2TuW 2015 10 14.477123 02 00 02.238 -04 47 16.44 24.9g 15TG363 568 C~2TuW 2015 10 14.493297 02 00 02.174 -04 47 16.91 25.0g 15TG363 568 C~2TuW 2015 10 14.500241 02 00 02.143 -04 47 17.08 25.0g 15TG363 568 C~2TuW 2015 10 14.591882 02 00 01.754 -04 47 19.38 24.8g 15TG363 568 C~2TuW 2016 09 27.42366 02 05 28.98 -04 15 11.0 24.9g 15TG363 568 C~2eAH 2016 09 27.54339 02 05 28.54 -04 15 14.5 24.8g 15TG363 568 C~2eAH 2016 09 28.43258 02 05 25.30 -04 15 40.4 24.7g 15TG363 568 C~2eAH 2016 09 28.50482 02 05 25.03 -04 15 42.5 25.4g 15TG363 568 C~2eAH 2016 09 28.55228 02 05 24.86 -04 15 43.9 25.1g 15TG363 568 C~2eAH 2016 09 29.56380 02 05 21.12 -04 16 13.2 25.0g 15TG363 568 C~2eAH
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 0.08 0.00 -0.01
2 0.0000 -0.44 -0.02 -0.02 -0.02
3 0.0003 -7.16 -0.06 -0.31 -0.01
4 0.0109 -265.75 0.07 -10.37 0.02
5 0.0109 -266.18 -0.03 -10.37 0.04
6 0.0110 -267.24 0.01 -10.46 -0.04
7 0.0110 -267.74 -0.01 -10.46 -0.02
8 0.0112 -273.99 -0.04 -10.52 0.05
9 0.9663 4986.17 -0.02 33.85 0.03
10 0.9666 4978.77 0.02 32.95 0.01
11 0.9691 4924.20 -0.04 26.22 0.02
12 0.9693 4919.67 -0.04 25.71 0.02
13 0.9694 4916.80 0.07 25.32 -0.05
14 0.9722 4854.02 0.01 18.09 -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.
15TG363 quality flag:1 Type: SCATEXTD CENTAURR CLASSICAL axisobj 46.276 59.313 45.881 ecceobj 0.068 0.493 0.035 incobj 15.619 15.614 15.619 qmin 41.950 29.337 43.114 qmax 50.239 88.562 48.242 amean 45.967 57.919 45.578 amin 45.586 57.157 45.223 amax 46.357 59.313 45.947 emean 0.072 0.485 0.040 emin 0.062 0.475 0.030 emax 0.084 0.495 0.050 imean 14.075 14.170 14.088 imin 13.753 14.011 13.777 imax 14.404 14.287 14.407 excite_mean 0.254 0.543 0.247 fracstop 1.000 0.003 1.000 cjmean 3.046 2.873 3.045 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 171.2 5.8 176.1 kozaiamp 180.0 2.3 179.9