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: 15BX518 # Created Tue Feb 19 02:10:27 2019 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 66 observations of 66 # Arc: 6.19y # First observation: 2012/01/29 # Last observation: 2018/04/10 # Chi-squared of fit: 18.94 DOF: 126 RMS: 0.09 # Min/Max residuals: -0.27 0.34 # Exact a, adot, b, bdot, g, gdot: 1.343923E-05 2.106591E-02 5.824935E-06 7.667930E-03 2.370864E-02 -3.669738E-03 # Covariance matrix: 6.1370E-13 -2.8925E-13 1.3202E-13 -8.3487E-14 -1.7091E-13 -1.4959E-12 -2.8925E-13 1.6825E-13 -8.9094E-14 5.6297E-14 1.2304E-13 1.0082E-12 1.3202E-13 -8.9094E-14 3.3477E-13 -9.8860E-14 -6.8349E-14 -5.9570E-13 -8.3487E-14 5.6297E-14 -9.8860E-14 3.7535E-14 4.2836E-14 3.7675E-13 -1.7091E-13 1.2304E-13 -6.8349E-14 4.2836E-14 1.5665E-13 7.6301E-13 -1.4959E-12 1.0082E-12 -5.9570E-13 3.7675E-13 7.6301E-13 6.7510E-12 # lat0 lon0 xBary yBary zBary JD0 -20.853003 166.702285 0.601711 -0.277950 -0.729711 2455956.077936 # Heliocentric elements and errors Epoch: 2455956.5000 = 2012/01/30 Mean Anomaly: 278.27783 +/- 0.022 Argument of Peri: 53.60591 +/- 0.013 Long of Asc Node: 209.91682 +/- 0.000 Inclination: 28.23370 +/- 0.000 Eccentricity: 0.17070955 +/- 0.0001 Semi-Major Axis: 42.71999025 +/- 0.0028 Time of Perihelion: 2479108.1812 +/- 9.9 Perihelion: 35.42728006 +/- 0.0053 Aphelion: 50.01270045 +/- 0.0058 Period (y) 279.2254 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -38.97768101 +/- 0.0006 Ecliptic Y 9.83219563 +/- 0.0001 Ecliptic Z -15.01420735 +/- 0.0002 Ecliptic XDOT -0.00048541 +/- 0.0000 Ecliptic YDOT -0.00238163 +/- 0.0000 Ecliptic ZDOT 0.00097843 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.91115740 +/- 0.0006 Geocenter to KBO 42.17884969 +/- 0.0007 # Hcoef: 5.56
The following table shows the complete astrometric record for 15BX518. 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 (15BX518) followed by the observatory code and reference code for the source of the astrometry.
2012 01 29.57717 10 38 16.205 -13 57 04.78 22.4G 15BX518 F51 C~2ji4 2012 01 29.59067 10 38 16.137 -13 57 04.48 21.6G 15BX518 F51 C~2ji4 2015 01 02.61904 10 55 34.594 -14 08 17.03 22.1G 15BX518 F51 C~2ji4 2015 01 18.53177 10 54 56.305 -14 10 01.91 21.8w 15BX518 F51 C~1vYC 2015 01 18.54405 10 54 56.276 -14 10 01.82 21.8w 15BX518 F51 C~1vYC 2015 01 18.55632 10 54 56.228 -14 10 01.73 22.0w 15BX518 F51 C~1vYC 2015 01 18.56863 10 54 56.190 -14 10 01.73 21.7w 15BX518 F51 C~1vYC 2015 01 20.49703 10 54 50.270 -14 10 01.44 21.6w 15BX518 F51 C~1vYC 2015 01 20.51016 10 54 50.233 -14 10 01.46 21.7w 15BX518 F51 C~1vYC 2015 01 20.52329 10 54 50.188 -14 10 01.49 21.7w 15BX518 F51 C~1vYC 2015 01 20.53646 10 54 50.146 -14 10 01.38 21.8w 15BX518 F51 C~1vYC 2015 01 22.50867 10 54 43.831 -14 09 58.01 21.8w 15BX518 F51 C~1vYC 2015 01 22.52125 10 54 43.781 -14 09 58.03 21.8w 15BX518 F51 C~1vYC 2015 01 22.53382 10 54 43.750 -14 09 57.93 21.8w 15BX518 F51 C~1vYC 2015 01 22.54640 10 54 43.703 -14 09 57.93 21.8w 15BX518 F51 C~1vYC 2015 03 22.35732 10 50 33.599 -13 47 49.82 21.7w 15BX518 F51 C~1vYC 2015 03 22.36788 10 50 33.546 -13 47 49.37 21.7w 15BX518 F51 C~1vYC 2015 03 22.37845 10 50 33.501 -13 47 48.94 21.7w 15BX518 F51 C~1vYC 2015 03 22.38899 10 50 33.456 -13 47 48.43 21.8w 15BX518 F51 C~1vYC 2015 03 23.38599 10 50 29.229 -13 47 10.07 21.8w 15BX518 F51 C~1vYC 2015 03 23.39662 10 50 29.178 -13 47 09.79 21.8w 15BX518 F51 C~1vYC 2015 03 23.40720 10 50 29.132 -13 47 09.36 22.0w 15BX518 F51 C~1vYC 2015 03 23.41782 10 50 29.093 -13 47 08.95 21.6w 15BX518 F51 C~1vYC 2016 01 14.57062 11 00 34.021 -14 13 11.58 21.8G 15BX518 F51 C~2ji4 2016 01 14.58098 11 00 33.985 -14 13 11.71 21.4G 15BX518 F51 C~2ji4 2016 01 14.59133 11 00 33.961 -14 13 11.70 21.9G 15BX518 F51 C~2ji4 2016 01 14.60166 11 00 33.929 -14 13 11.74 21.7G 15BX518 F51 C~2ji4 2016 01 18.55494 11 00 23.066 -14 13 22.01 22.0G 15BX518 F51 C~2ji4 2016 01 18.56744 11 00 23.037 -14 13 21.89 21.7G 15BX518 F51 C~2ji4 2016 01 18.59247 11 00 22.963 -14 13 22.02 22.0G 15BX518 F51 C~2ji4 2016 02 28.48289 10 57 41.189 -14 03 48.90 21.7G 15BX518 F51 C~2ji4 2016 03 07.38435 10 57 04.919 -13 59 51.42 21.6G 15BX518 F51 C~2ji4 2016 03 07.39592 10 57 04.862 -13 59 51.12 21.9G 15BX518 F51 C~2ji4 2016 03 07.40750 10 57 04.806 -13 59 50.75 21.8G 15BX518 F51 C~2ji4 2016 03 07.41908 10 57 04.752 -13 59 50.33 21.9G 15BX518 F51 C~2ji4 2016 03 15.38234 10 56 28.606 -13 55 19.60 21.2G 15BX518 F51 C~2ji4 2016 03 15.39420 10 56 28.546 -13 55 19.03 21.0G 15BX518 F51 C~2ji4 2016 03 28.33226 10 55 33.019 -13 47 07.15 21.6G 15BX518 F51 C~2ji4 2016 03 28.34387 10 55 32.956 -13 47 06.58 21.1G 15BX518 F51 C~2ji4 2016 03 28.35544 10 55 32.913 -13 47 06.27 20.8G 15BX518 F51 C~2ji4 2016 03 28.36701 10 55 32.853 -13 47 05.93 21.4G 15BX518 F51 C~2ji4 2016 04 03.33753 10 55 09.364 -13 43 03.53 20.2G 15BX518 F51 C~2ji4 2016 04 29.29762 10 53 51.350 -13 24 59.03 21.9G 15BX518 F51 C~2ji4 2016 04 29.30923 10 53 51.324 -13 24 58.66 21.9G 15BX518 F51 C~2ji4 2016 04 29.32087 10 53 51.308 -13 24 58.20 22.1G 15BX518 F51 C~2ji4 2016 04 29.33248 10 53 51.287 -13 24 57.56 22.1G 15BX518 F51 C~2ji4 2016 05 05.26830 10 53 40.275 -13 20 58.81 22.2G 15BX518 F51 C~2ji4 2016 05 05.27950 10 53 40.256 -13 20 58.38 21.7G 15BX518 F51 C~2ji4 2016 05 05.29069 10 53 40.236 -13 20 58.01 21.8G 15BX518 F51 C~2ji4 2016 05 05.30186 10 53 40.216 -13 20 57.49 22.0G 15BX518 F51 C~2ji4 2017 01 30.53518 11 05 10.834 -14 15 35.64 21.4G 15BX518 F51 C~2ji4 2017 01 30.54682 11 05 10.805 -14 15 35.45 21.5G 15BX518 F51 C~2ji4 2017 02 17.51311 11 03 58.140 -14 11 09.07 21.9G 15BX518 F51 C~2ji4 2017 02 17.52560 11 03 58.100 -14 11 08.91 21.8G 15BX518 F51 C~2ji4 2017 02 17.53807 11 03 58.042 -14 11 08.65 22.1G 15BX518 F51 C~2ji4 2017 02 17.55055 11 03 57.985 -14 11 08.39 22.5G 15BX518 F51 C~2ji4 2017 03 21.38729 11 01 33.757 -13 55 04.36 21.5G 15BX518 F51 C~2ji4 2017 03 21.39849 11 01 33.704 -13 55 03.88 21.6G 15BX518 F51 C~2ji4 2017 03 21.40971 11 01 33.654 -13 55 03.49 21.7G 15BX518 F51 C~2ji4 2017 03 21.42092 11 01 33.608 -13 55 03.08 21.9G 15BX518 F51 C~2ji4 2017 03 31.37797 11 00 51.650 -13 48 32.96 15BX518 F51 C~2ji4 2018 01 10.58825 11 11 40.957 -14 18 17.70 22.3G 15BX518 F51 C~2ji4 2018 01 10.59860 11 11 40.921 -14 18 17.85 22.2G 15BX518 F51 C~2ji4 2018 01 10.61929 11 11 40.873 -14 18 18.08 22.4G 15BX518 F51 C~2ji4 2018 04 10.16493 11 05 47.305 -13 44 53.81 21.6R 15BX518 G37 2018 04 10.21052 11 05 47.135 -13 44 52.00 15BX518 G37
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 0.06 0.00 -0.18 2 0.0000 0.00 -0.16 0.00 -0.00 3 2.9269 0.00 0.34 0.00 -0.13 4 2.9704 0.00 -0.00 0.00 -0.07 5 2.9705 0.00 0.13 0.00 0.03 6 2.9705 0.00 -0.02 0.00 0.13 7 2.9705 0.00 -0.02 0.00 0.13 8 2.9758 0.00 -0.07 0.00 0.07 9 2.9759 0.00 0.01 0.00 0.04 10 2.9759 0.00 -0.03 0.00 -0.00 11 2.9759 0.00 -0.02 0.00 0.09 12 2.9813 0.00 0.02 0.00 0.08 13 2.9814 0.00 -0.10 0.00 0.03 14 2.9814 0.00 0.07 0.00 0.10 15 2.9814 0.00 -0.00 0.00 0.07 16 3.1425 0.00 0.10 0.00 -0.11 17 3.1425 0.00 -0.01 0.00 -0.06 18 3.1425 0.00 0.01 0.00 -0.03 19 3.1425 0.00 0.02 0.00 0.07 20 3.1453 0.00 0.10 0.00 0.13 21 3.1453 0.00 0.02 0.00 0.00 22 3.1453 0.00 0.01 0.00 0.02 23 3.1454 0.00 0.11 0.00 0.02 24 3.9589 0.00 0.03 0.00 0.07 25 3.9589 0.00 -0.09 0.00 -0.01 26 3.9590 0.00 -0.04 0.00 0.04 27 3.9590 0.00 -0.10 0.00 0.04 28 3.9698 0.00 -0.20 0.00 -0.06 29 3.9699 0.00 -0.08 0.00 0.07 30 3.9699 0.00 -0.07 0.00 -0.03 31 4.0819 0.00 -0.17 0.00 -0.22 32 4.1035 0.00 0.00 0.00 0.03 33 4.1035 0.00 -0.04 0.00 -0.04 34 4.1036 0.00 -0.07 0.00 -0.04 35 4.1036 0.00 -0.07 0.00 0.00 36 4.1254 0.00 -0.01 0.00 -0.10 37 4.1254 0.00 -0.10 0.00 0.04 38 4.1609 0.00 0.16 0.00 -0.06 39 4.1609 0.00 -0.06 0.00 0.05 40 4.1609 0.00 0.01 0.00 -0.11 41 4.1610 0.00 -0.17 0.00 -0.23 42 4.1773 0.00 0.12 0.00 -0.27 43 4.2484 0.00 -0.09 0.00 0.17 44 4.2484 0.00 -0.10 0.00 0.07 45 4.2484 0.00 0.04 0.00 0.05 46 4.2485 0.00 0.11 0.00 0.21 47 4.2647 0.00 -0.04 0.00 0.06 48 4.2648 0.00 -0.04 0.00 0.05 49 4.2648 0.00 -0.06 0.00 -0.03 50 4.2648 0.00 -0.07 0.00 0.05 51 5.0047 0.00 -0.16 0.00 -0.05 52 5.0047 0.00 0.05 0.00 0.05 53 5.0539 0.00 -0.12 0.00 0.08 54 5.0539 0.00 0.12 0.00 -0.03 55 5.0540 0.00 0.08 0.00 -0.03 56 5.0540 0.00 0.06 0.00 -0.04 57 5.1412 0.00 0.02 0.00 -0.02 58 5.1412 0.00 -0.02 0.00 0.04 59 5.1412 0.00 -0.02 0.00 0.00 60 5.1413 0.00 0.04 0.00 -0.01 61 5.1685 0.00 0.07 0.00 -0.04 62 5.9494 0.00 0.18 0.00 0.08 63 5.9494 0.00 -0.03 0.00 0.00 64 5.9495 0.00 -0.07 0.00 -0.08 65 6.1946 0.00 0.21 0.00 0.10 66 6.1948 0.00 0.20 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.
15BX518 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.688 42.688 42.688 ecceobj 0.170 0.170 0.170 incobj 28.237 28.237 28.237 qmin 34.560 34.576 34.568 qmax 51.442 51.442 51.426 amean 42.834 42.833 42.833 amin 42.472 42.471 42.474 amax 43.244 43.230 43.232 emean 0.172 0.171 0.171 emin 0.153 0.153 0.153 emax 0.191 0.190 0.190 imean 28.761 28.763 28.761 imin 28.262 28.268 28.264 imax 29.256 29.263 29.252 excite_mean 0.511 0.511 0.511 fracstop 1.000 1.000 1.000 cjmean 2.763 2.763 2.763 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 183.3 183.2 183.2 kozaiamp 180.0 180.0 180.0