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: 14UW276 # Created Sat Feb 22 02:10:13 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 22 observations of 22 # Arc: 5.09y # First observation: 2013/10/03 # Last observation: 2018/11/07 # Chi-squared of fit: 17.20 DOF: 38 RMS: 0.16 # Min/Max residuals: -0.51 0.35 # Exact a, adot, b, bdot, g, gdot: 1.962388E-05 4.346748E-02 4.859891E-07 -2.607927E-03 3.453327E-02 7.621795E-03 # Covariance matrix: 1.0216E-12 -6.8834E-13 -3.8072E-14 3.5209E-14 2.7286E-14 -2.6337E-12 -6.8834E-13 5.8243E-13 3.6608E-14 -3.3855E-14 5.1952E-14 2.5111E-12 -3.8072E-14 3.6608E-14 4.3926E-13 -1.3615E-13 3.1916E-15 1.7235E-13 3.5209E-14 -3.3855E-14 -1.3615E-13 5.0823E-14 -2.9541E-15 -1.5938E-13 2.7286E-14 5.1952E-14 3.1916E-15 -2.9541E-15 7.6048E-13 1.3089E-14 -2.6337E-12 2.5111E-12 1.7235E-13 -1.5938E-13 1.3089E-14 1.1885E-11 # lat0 lon0 xBary yBary zBary JD0 -13.303497 22.725062 0.221906 -0.224408 -0.949554 2456568.800478 # Heliocentric elements and errors Epoch: 2456568.5000 = 2013/10/03 Mean Anomaly: 24.13793 +/- 0.009 Argument of Peri: 210.81989 +/- 0.013 Long of Asc Node: 128.14601 +/- 0.001 Inclination: 13.36374 +/- 0.000 Eccentricity: 0.28886318 +/- 0.0001 Semi-Major Axis: 39.44278713 +/- 0.0068 Time of Perihelion: 2450501.8731 +/- 2.7 Perihelion: 28.04921810 +/- 0.0069 Aphelion: 50.83635616 +/- 0.0100 Period (y) 247.7192 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 26.97786560 +/- 0.0007 Ecliptic Y 11.06161075 +/- 0.0003 Ecliptic Z -6.66342584 +/- 0.0002 Ecliptic XDOT -0.00083894 +/- 0.0000 Ecliptic YDOT 0.00338607 +/- 0.0000 Ecliptic ZDOT -0.00034012 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 29.90919623 +/- 0.0006 Geocenter to KBO 28.95751653 +/- 0.0007 # Hcoef: 8.87
The following table shows the complete astrometric record for 14UW276. 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 (14UW276) followed by the observatory code and reference code for the source of the astrometry.
2013 10 03.29970 01 43 43.355 -03 31 49.73 23.5g 14UW276 W84 C~52UR 2014 10 29.26979 01 50 35.057 -03 01 12.50 23.4i 14UW276 W84 C~52UR 2014 10 31.24447 01 50 23.131 -03 02 11.12 23.9r 14UW276 W84 C~52UR 2015 10 14.54844 02 01 22.68 -02 06 44.0 24.4g 14UW276 T09 C~8eQI 2015 10 14.55055 02 01 22.67 -02 06 44.2 24.8g 14UW276 T09 C~8eQI 2015 10 14.57679 02 01 22.50 -02 06 45.0 24.6g 14UW276 T09 C~8eQI 2015 10 20.49546 02 00 46.97 -02 10 21.6 23.1y 14UW276 T09 C~8eQI 2015 10 20.51457 02 00 46.85 -02 10 22.4 22.9y 14UW276 T09 C~8eQI 2016 09 10.40183 02 13 13.811 -00 59 02.73 23.3i 14UW276 W84 C~52UR 2016 09 25.26803 02 12 10.379 -01 09 09.83 23.8g 14UW276 W84 C~52UR 2016 09 27.48621 02 11 59.37 -01 10 40.4 24.2g 14UW276 568 C~2eAI 2016 09 27.60677 02 11 58.75 -01 10 45.3 24.2g 14UW276 568 C~2eAI 2016 09 28.54358 02 11 54.01 -01 11 23.5 24.6g 14UW276 568 C~2eAI 2016 09 28.62851 02 11 53.57 -01 11 27.0 24.4g 14UW276 568 C~2eAI 2016 09 29.50747 02 11 49.07 -01 12 02.8 24.4g 14UW276 568 C~2eAI 2016 09 29.55477 02 11 48.82 -01 12 04.7 24.3g 14UW276 568 C~2eAI 2016 11 07.16172 02 08 03.142 -01 34 23.13 23.3i 14UW276 W84 C~52UR 2016 11 27.11271 02 06 13.072 -01 40 23.45 23.7r 14UW276 W84 C~52UR 2017 10 29.26760 02 17 56.771 -00 45 22.12 23.4r 14UW276 W84 C~52UR 2017 10 29.26898 02 17 56.761 -00 45 21.97 23.7i 14UW276 W84 C~52UR 2018 11 07.22958 02 25 53.865 -00 05 23.54 23.1i 14UW276 W84 C~52UR 2018 11 07.23231 02 25 53.836 -00 05 24.19 23.6g 14UW276 W84 C~52UR
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 0.18 0.00 -0.30
2 1.0704 0.00 0.00 0.00 -0.17
3 1.0758 0.00 -0.04 0.00 -0.08
4 2.0294 0.00 -0.03 0.00 0.20
5 2.0294 0.00 0.01 0.00 0.07
6 2.0295 0.00 -0.17 0.00 0.26
7 2.0457 0.00 -0.01 0.00 0.09
8 2.0458 0.00 -0.05 0.00 -0.04
9 2.9380 0.00 0.02 0.00 -0.03
10 2.9787 0.00 0.35 0.00 -0.40
11 2.9848 0.00 -0.09 0.00 0.10
12 2.9851 0.00 -0.09 0.00 0.13
13 2.9877 0.00 -0.07 0.00 0.17
14 2.9879 0.00 -0.04 0.00 0.13
15 2.9903 0.00 -0.04 0.00 0.12
16 2.9904 0.00 -0.04 0.00 0.14
17 3.0961 0.00 -0.03 0.00 0.03
18 3.1508 0.00 0.14 0.00 0.05
19 4.0711 0.00 0.03 0.00 -0.08
20 4.0711 0.00 0.01 0.00 0.11
21 5.0949 0.00 0.15 0.00 0.07
22 5.0950 0.00 -0.04 0.00 -0.51
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.
14UW276 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.703 39.703 39.703 ecceobj 0.294 0.294 0.294 incobj 13.356 13.356 13.356 qmin 27.346 27.346 27.346 qmax 52.276 52.270 52.327 amean 39.455 39.455 39.455 amin 38.939 38.939 38.939 amax 40.077 40.053 40.074 emean 0.290 0.290 0.290 emin 0.271 0.271 0.271 emax 0.306 0.306 0.306 imean 11.769 11.768 11.768 imin 11.056 11.056 11.054 imax 12.404 12.404 12.404 excite_mean 0.354 0.354 0.354 fracstop 1.000 1.000 1.000 cjmean 2.909 2.909 2.909 libcent 0 179.7 180.4 180.3 libamp 0 105.5 104.8 104.2 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 193.7 193.7 194.7 kozaiamp 180.0 180.0 180.0