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: 15BQ518 # Created Fri Nov 22 02:10:14 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 81 observations of 81 # Arc: 10.04y # First observation: 2012/01/20 # Last observation: 2022/02/04 # Chi-squared of fit: 40.69 DOF: 156 RMS: 0.13 # Min/Max residuals: -0.63 0.50 # Exact a, adot, b, bdot, g, gdot: 1.480415E-05 2.288272E-02 -2.140333E-06 -2.824144E-03 2.411029E-02 1.465820E-03 # Covariance matrix: 1.4894E-13 -4.7193E-14 -8.3509E-15 4.3393E-15 9.2902E-15 -1.4474E-13 -4.7193E-14 2.3746E-14 5.2889E-15 -2.6902E-15 1.6867E-14 8.9089E-14 -8.3509E-15 5.2889E-15 7.2553E-14 -1.2938E-14 5.2292E-15 2.2661E-14 4.3393E-15 -2.6902E-15 -1.2938E-14 3.2005E-15 -2.4821E-15 -1.1507E-14 9.2902E-15 1.6867E-14 5.2292E-15 -2.4821E-15 8.6454E-14 8.0183E-14 -1.4474E-13 8.9089E-14 2.2661E-14 -1.1507E-14 8.0183E-14 3.8082E-13 # lat0 lon0 xBary yBary zBary JD0 -14.609155 154.629461 0.561677 -0.203877 -0.782277 2455946.982176 # Heliocentric elements and errors Epoch: 2455946.5000 = 2012/01/20 Mean Anomaly: 106.70196 +/- 0.038 Argument of Peri: 131.20223 +/- 0.033 Long of Asc Node: 270.92551 +/- 0.000 Inclination: 16.01180 +/- 0.000 Eccentricity: 0.05507986 +/- 0.0000 Semi-Major Axis: 41.49097827 +/- 0.0018 Time of Perihelion: 2427013.1412 +/- 10.5 Perihelion: 39.20566081 +/- 0.0020 Aphelion: 43.77629573 +/- 0.0022 Period (y) 267.2629 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -36.75116477 +/- 0.0004 Ecliptic Y 18.05145255 +/- 0.0002 Ecliptic Z -10.46136633 +/- 0.0001 Ecliptic XDOT -0.00119025 +/- 0.0000 Ecliptic YDOT -0.00230901 +/- 0.0000 Ecliptic ZDOT -0.00035222 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.26038916 +/- 0.0004 Geocenter to KBO 41.47605720 +/- 0.0005 # Hcoef: 5.87
The following table shows the complete astrometric record for 15BQ518. 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 (15BQ518) followed by the observatory code and reference code for the source of the astrometry.
2012 01 20.48141 10 04 47.285 -03 48 43.75 22.1w 15BQ518 F51 C~1vYB 2012 01 20.49450 10 04 47.226 -03 48 43.83 22.2w 15BQ518 F51 C~1vYB 2012 01 20.50753 10 04 47.184 -03 48 43.55 22.4w 15BQ518 F51 C~1vYB 2012 01 20.52057 10 04 47.126 -03 48 43.51 22.3w 15BQ518 F51 C~1vYB 2012 03 21.29722 10 00 19.324 -03 26 33.55 22.3w 15BQ518 F51 C~1vYB 2012 03 21.31111 10 00 19.268 -03 26 32.91 22.1w 15BQ518 F51 C~1vYB 2012 03 21.32503 10 00 19.234 -03 26 32.27 22.1w 15BQ518 F51 C~1vYB 2012 03 21.33897 10 00 19.170 -03 26 31.98 22.0w 15BQ518 F51 C~1vYB 2013 02 03.48080 10 08 25.271 -04 23 10.21 22.0G 15BQ518 F51 C~2r7a 2014 01 24.52671 10 13 49.617 -05 02 28.43 22.1G 15BQ518 F51 C~2r7a 2014 01 25.48000 10 13 45.762 -05 02 19.71 21.2G 15BQ518 F51 C~2r7a 2014 02 22.49410 10 11 40.314 -04 54 10.40 22.5G 15BQ518 F51 C~2r7a 2014 12 08.64714 10 20 23.640 -05 34 05.45 21.8G 15BQ518 F51 C~2r7a 2015 01 24.54731 10 18 31.062 -05 39 28.07 22.5w 15BQ518 F51 C~1vYB 2015 01 24.57004 10 18 30.983 -05 39 27.52 22.4w 15BQ518 F51 C~1vYB 2015 01 24.59200 10 18 30.875 -05 39 27.61 22.0w 15BQ518 F51 C~1vYB 2015 01 26.45070 10 18 23.436 -05 39 11.20 22.4G 15BQ518 F51 C~2r7a 2015 01 26.46209 10 18 23.365 -05 39 10.97 22.2G 15BQ518 F51 C~2r7a 2015 01 26.47344 10 18 23.326 -05 39 10.80 22.1G 15BQ518 F51 C~2r7a 2015 01 26.48481 10 18 23.280 -05 39 10.75 22.2G 15BQ518 F51 C~2r7a 2015 02 20.42149 10 16 32.668 -05 32 15.55 22.1w 15BQ518 F51 C~1vYB 2015 02 20.43447 10 16 32.609 -05 32 15.32 22.2w 15BQ518 F51 C~1vYB 2015 02 20.44716 10 16 32.554 -05 32 14.93 22.0w 15BQ518 F51 C~1vYB 2015 02 20.45984 10 16 32.489 -05 32 14.50 22.2w 15BQ518 F51 C~1vYB 2015 02 22.39578 10 16 23.489 -05 31 29.21 21.8G 15BQ518 F51 C~2r7a 2015 02 22.40870 10 16 23.448 -05 31 29.01 21.8G 15BQ518 F51 C~2r7a 2015 02 22.42194 10 16 23.367 -05 31 28.79 22.1G 15BQ518 F51 C~2r7a 2015 02 22.43491 10 16 23.320 -05 31 28.66 22.8G 15BQ518 F51 C~2r7a 2015 04 14.33103 10 13 05.210 -05 06 23.16 21.9G 15BQ518 F51 C~2r7a 2015 12 24.59219 10 24 42.713 -06 14 54.26 22.0G 15BQ518 F51 C~2r7a 2016 01 11.56746 10 23 58.292 -06 16 59.59 22.1G 15BQ518 F51 C~2r7a 2016 01 11.58086 10 23 58.240 -06 16 59.63 22.2G 15BQ518 F51 C~2r7a 2016 01 11.59422 10 23 58.192 -06 16 59.74 22.2G 15BQ518 F51 C~2r7a 2016 01 11.60759 10 23 58.158 -06 16 59.71 21.9G 15BQ518 F51 C~2r7a 2016 01 12.52568 10 23 55.259 -06 17 00.28 22.2G 15BQ518 F51 C~2r7b 2016 01 12.53782 10 23 55.211 -06 17 00.38 21.9G 15BQ518 F51 C~2r7b 2016 01 12.54989 10 23 55.172 -06 17 00.32 22.0G 15BQ518 F51 C~2r7b 2016 01 12.56198 10 23 55.134 -06 17 00.29 22.1G 15BQ518 F51 C~2r7b 2016 01 17.52235 10 23 38.491 -06 16 53.47 22.3G 15BQ518 F51 C~2r7b 2016 01 17.53565 10 23 38.441 -06 16 53.46 22.0G 15BQ518 F51 C~2r7b 2016 01 17.54898 10 23 38.389 -06 16 53.36 22.1G 15BQ518 F51 C~2r7b 2016 01 17.56230 10 23 38.342 -06 16 53.46 22.0G 15BQ518 F51 C~2r7b 2016 03 06.40184 10 20 06.536 -06 02 57.78 21.6G 15BQ518 F51 C~2r7b 2016 03 06.41441 10 20 06.454 -06 02 57.56 21.6G 15BQ518 F51 C~2r7b 2016 03 13.38118 10 19 35.721 -05 59 34.70 22.1G 15BQ518 F51 C~2r7b 2016 03 13.39233 10 19 35.679 -05 59 34.23 22.1G 15BQ518 F51 C~2r7b 2016 03 13.40345 10 19 35.619 -05 59 33.96 22.0G 15BQ518 F51 C~2r7b 2016 03 13.41460 10 19 35.579 -05 59 33.64 22.3G 15BQ518 F51 C~2r7b 2016 03 14.36919 10 19 31.482 -05 59 05.02 21.8G 15BQ518 F51 C~2r7b 2016 03 30.35829 10 18 28.581 -05 50 44.81 22.0G 15BQ518 F51 C~2r7b 2016 03 30.37068 10 18 28.536 -05 50 44.39 22.1G 15BQ518 F51 C~2r7b 2016 03 30.38309 10 18 28.492 -05 50 44.09 22.2G 15BQ518 F51 C~2r7b 2016 03 30.39548 10 18 28.444 -05 50 43.69 22.1G 15BQ518 F51 C~2r7b 2016 04 30.25631 10 17 11.811 -05 35 10.54 22.0G 15BQ518 F51 C~2r7b 2016 04 30.26745 10 17 11.806 -05 35 10.04 21.8G 15BQ518 F51 C~2r7b 2016 04 30.27859 10 17 11.780 -05 35 09.86 22.3G 15BQ518 F51 C~2r7b 2016 04 30.28970 10 17 11.772 -05 35 09.51 22.1G 15BQ518 F51 C~2r7b 2017 01 29.58473 10 27 29.816 -06 51 58.69 22.2G 15BQ518 F51 C~2r7b 2017 02 25.43687 10 25 30.088 -06 43 52.18 22.1G 15BQ518 F51 C~2r7b 2017 02 25.44929 10 25 30.020 -06 43 51.78 22.2G 15BQ518 F51 C~2r7b 2017 02 25.46170 10 25 29.971 -06 43 51.52 22.2G 15BQ518 F51 C~2r7b 2017 02 25.47410 10 25 29.898 -06 43 51.15 21.8G 15BQ518 F51 C~2r7b 2017 03 18.39137 10 23 56.683 -06 34 00.08 22.3G 15BQ518 F51 C~2r7b 2017 03 18.40459 10 23 56.620 -06 33 59.65 21.8G 15BQ518 F51 C~2r7b 2017 04 01.35832 10 23 02.748 -06 26 36.27 22.0G 15BQ518 F51 C~2r7b 2017 04 01.36962 10 23 02.704 -06 26 35.86 21.9G 15BQ518 F51 C~2r7b 2017 04 01.38094 10 23 02.665 -06 26 35.59 22.1G 15BQ518 F51 C~2r7b 2017 04 01.39223 10 23 02.608 -06 26 35.11 22.4G 15BQ518 F51 C~2r7b 2018 04 10.14981 10 27 14.630 -06 58 33.85 22.2R 15BQ518 G37 C~2bHJ 2018 04 10.20467 10 27 14.445 -06 58 31.27 15BQ518 G37 C~2bHJ 2020 01 19.55994 10 42 09.359 -08 41 04.67 22.0w 15BQ518 F51 C~3cqt 2020 01 19.57171 10 42 09.305 -08 41 04.34 22.2w 15BQ518 F51 C~3cqt 2020 01 19.59530 10 42 09.234 -08 41 04.34 22.2w 15BQ518 F51 C~3cqt 2022 01 10.581899 10 51 51.595 -09 50 50.88 22.0w 15BQ518 F52 C~5Liu 2022 01 10.592874 10 51 51.565 -09 50 51.33 22.1w 15BQ518 F52 C~5Liu 2022 01 10.603868 10 51 51.527 -09 50 51.21 22.0w 15BQ518 F52 C~5Liu 2022 01 10.614938 10 51 51.505 -09 50 51.31 22.0w 15BQ518 F52 C~5Liu 2022 02 04.466806 10 50 27.700 -09 49 48.87 22.0w 15BQ518 F52 C~5S4l 2022 02 04.479179 10 50 27.648 -09 49 48.73 22.1w 15BQ518 F52 C~5S4l 2022 02 04.491486 10 50 27.584 -09 49 48.67 22.0w 15BQ518 F52 C~5S4l 2022 02 04.503773 10 50 27.546 -09 49 48.57 22.3w 15BQ518 F52 C~5S4l
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 0.04
2 0.0000 0.00 -0.03 0.00 -0.14
3 0.0001 0.00 0.13 0.00 0.04
4 0.0001 0.00 0.05 0.00 -0.02
5 0.1665 0.00 -0.13 0.00 -0.21
6 0.1665 0.00 -0.16 0.00 0.01
7 0.1666 0.00 0.14 0.00 0.22
8 0.1666 0.00 -0.01 0.00 0.09
9 1.0404 0.00 -0.26 0.00 -0.01
10 2.0124 0.00 -0.17 0.00 -0.01
11 2.0151 0.00 0.04 0.00 -0.30
12 2.0918 0.00 -0.05 0.00 -0.13
13 2.8834 0.00 -0.10 0.00 -0.10
14 3.0118 0.00 0.12 0.00 0.14
15 3.0119 0.00 0.32 0.00 0.50
16 3.0119 0.00 0.03 0.00 0.22
17 3.0170 0.00 0.19 0.00 -0.11
18 3.0171 0.00 -0.17 0.00 0.01
19 3.0171 0.00 -0.05 0.00 0.07
20 3.0171 0.00 -0.03 0.00 0.02
21 3.0854 0.00 0.06 0.00 -0.04
22 3.0854 0.00 0.09 0.00 -0.11
23 3.0855 0.00 0.17 0.00 -0.01
24 3.0855 0.00 0.09 0.00 0.12
25 3.0908 0.00 -0.16 0.00 0.12
26 3.0908 0.00 0.14 0.00 0.02
27 3.0909 0.00 -0.13 0.00 -0.08
28 3.0909 0.00 0.08 0.00 -0.26
29 3.2303 0.00 -0.07 0.00 -0.20
30 3.9264 0.00 0.05 0.00 0.05
31 3.9756 0.00 0.09 0.00 0.13
32 3.9756 0.00 -0.04 0.00 0.11
33 3.9757 0.00 -0.12 0.00 0.01
34 3.9757 0.00 0.02 0.00 0.05
35 3.9782 0.00 0.05 0.00 0.05
36 3.9783 0.00 -0.07 0.00 -0.05
37 3.9783 0.00 -0.07 0.00 0.01
38 3.9783 0.00 -0.04 0.00 0.05
39 3.9919 0.00 0.08 0.00 0.06
40 3.9919 0.00 0.04 0.00 0.03
41 3.9920 0.00 -0.02 0.00 0.09
42 3.9920 0.00 -0.00 0.00 -0.05
43 4.1257 0.00 0.37 0.00 0.08
44 4.1258 0.00 0.01 0.00 -0.05
45 4.1448 0.00 -0.08 0.00 -0.08
46 4.1449 0.00 0.02 0.00 0.05
47 4.1449 0.00 -0.15 0.00 -0.01
48 4.1449 0.00 -0.01 0.00 -0.03
49 4.1475 0.00 -0.08 0.00 -0.11
50 4.1913 0.00 0.03 0.00 0.06
51 4.1913 0.00 0.03 0.00 0.09
52 4.1914 0.00 0.04 0.00 -0.01
53 4.1914 0.00 -0.00 0.00 -0.00
54 4.2759 0.00 -0.06 0.00 -0.10
55 4.2759 0.00 0.10 0.00 0.10
56 4.2760 0.00 -0.06 0.00 -0.02
57 4.2760 0.00 0.05 0.00 0.03
58 5.0270 0.00 -0.03 0.00 0.01
59 5.1005 0.00 -0.03 0.00 -0.07
60 5.1005 0.00 -0.18 0.00 0.03
61 5.1006 0.00 -0.04 0.00 -0.02
62 5.1006 0.00 -0.26 0.00 0.04
63 5.1579 0.00 0.05 0.00 0.04
64 5.1579 0.00 -0.05 0.00 0.06
65 5.1961 0.00 -0.02 0.00 -0.02
66 5.1961 0.00 -0.07 0.00 0.03
67 5.1962 0.00 -0.05 0.00 -0.07
68 5.1962 0.00 -0.30 0.00 0.05
69 6.2195 0.00 0.19 0.00 -0.63
70 6.2196 0.00 -0.02 0.00 0.18
71 7.9975 0.00 0.08 0.00 -0.17
72 7.9975 0.00 -0.13 0.00 0.14
73 7.9976 0.00 0.01 0.00 0.11
74 9.9743 0.00 0.07 0.00 0.17
75 9.9743 0.00 0.06 0.00 -0.21
76 9.9743 0.00 -0.08 0.00 -0.03
77 9.9744 0.00 0.03 0.00 -0.06
78 10.0424 0.00 0.09 0.00 0.08
79 10.0424 0.00 0.08 0.00 0.09
80 10.0425 0.00 -0.12 0.00 0.01
81 10.0425 0.00 0.07 0.00 -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.
15BQ518 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.497 41.497 41.497 ecceobj 0.056 0.056 0.056 incobj 16.003 16.003 16.003 qmin 38.569 38.529 38.585 qmax 44.698 44.708 44.761 amean 41.559 41.559 41.559 amin 41.242 41.243 41.242 amax 41.882 41.881 41.884 emean 0.055 0.055 0.055 emin 0.043 0.044 0.043 emax 0.068 0.068 0.069 imean 17.767 17.767 17.767 imin 17.138 17.140 17.139 imax 18.353 18.353 18.353 excite_mean 0.310 0.310 0.310 fracstop 1.000 1.000 1.000 cjmean 2.958 2.958 2.958 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 179.2 179.3 179.3 kozaiamp 180.0 180.0 180.0