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: 15BH518 # Created Sun Dec 22 02:10:15 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 79 observations of 79 # Arc: 13.93y # First observation: 2004/01/28 # Last observation: 2017/12/31 # Chi-squared of fit: 45.07 DOF: 152 RMS: 0.13 # Min/Max residuals: -0.42 0.31 # Exact a, adot, b, bdot, g, gdot: 2.011059E-05 5.219638E-02 -1.913737E-06 -5.854252E-03 4.065239E-02 -1.804686E-03 # Covariance matrix: 4.5868E-13 -8.0556E-14 -2.2939E-14 6.6488E-15 -2.6934E-14 -5.6916E-14 -8.0556E-14 1.8829E-14 6.4490E-15 -1.9004E-15 8.9450E-15 1.6292E-14 -2.2939E-14 6.4490E-15 2.5693E-13 -2.2734E-14 2.5384E-16 6.3898E-15 6.6488E-15 -1.9004E-15 -2.2734E-14 2.2220E-15 -7.9900E-16 -1.8499E-15 -2.6934E-14 8.9450E-15 2.5384E-16 -7.9900E-16 3.2288E-14 7.4081E-15 -5.6916E-14 1.6292E-14 6.3898E-15 -1.8499E-15 7.4081E-15 1.5834E-14 # lat0 lon0 xBary yBary zBary JD0 -9.241270 130.321926 0.046363 -0.157234 -0.966746 2453032.834384 # Heliocentric elements and errors Epoch: 2453032.5000 = 2004/01/28 Mean Anomaly: 338.96085 +/- 0.003 Argument of Peri: 259.94772 +/- 0.003 Long of Asc Node: 256.17567 +/- 0.000 Inclination: 10.93342 +/- 0.000 Eccentricity: 0.09463649 +/- 0.0000 Semi-Major Axis: 28.00701926 +/- 0.0005 Time of Perihelion: 2456196.4120 +/- 1.5 Perihelion: 25.35653332 +/- 0.0006 Aphelion: 30.65750521 +/- 0.0007 Period (y) 148.2206 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -16.31317783 +/- 0.0001 Ecliptic Y 19.29030769 +/- 0.0001 Ecliptic Z -3.95041530 +/- 0.0000 Ecliptic XDOT -0.00256550 +/- 0.0000 Ecliptic YDOT -0.00242095 +/- 0.0000 Ecliptic ZDOT -0.00036949 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 25.57034378 +/- 0.0001 Geocenter to KBO 24.59885388 +/- 0.0001 # Hcoef: 8.09
The following table shows the complete astrometric record for 15BH518. 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 (15BH518) followed by the observatory code and reference code for the source of the astrometry.
2004 01 28.333641 08 41 01.21 +08 44 33.6 21.8V 15BH518 645 C~2JAT 2004 01 28.334471 08 41 01.20 +08 44 33.6 21.6V 15BH518 645 C~2JAT 2004 01 28.336958 08 41 01.18 +08 44 33.7 22.6V 15BH518 645 C~2JAT 2011 02 10.39625 09 58 15.054 +00 40 52.62 22.2G 15BH518 F51 C~2kRR 2011 05 25.27773 09 51 52.437 +01 41 42.12 22.4w 15BH518 F51 C~1vYA 2011 05 25.28235 09 51 52.462 +01 41 41.88 22.3w 15BH518 F51 C~1vYA 2011 05 25.28696 09 51 52.438 +01 41 41.63 22.2w 15BH518 F51 C~1vYA 2011 10 27.60670 10 12 28.507 -00 06 14.05 22.3w 15BH518 F51 C~1vYA 2011 10 27.61176 10 12 28.523 -00 06 14.31 22.4w 15BH518 F51 C~1vYA 2011 10 27.62194 10 12 28.591 -00 06 15.01 22.1w 15BH518 F51 C~1vYA 2012 01 19.45855 10 11 57.041 -00 40 29.01 21.7G 15BH518 F51 C~2kRR 2012 01 19.48136 10 11 56.898 -00 40 28.96 22.4G 15BH518 F51 C~2kRR 2012 01 20.48209 10 11 50.980 -00 40 13.62 22.1w 15BH518 F51 C~1vYA 2012 01 20.49518 10 11 50.911 -00 40 13.18 21.8w 15BH518 F51 C~1vYA 2012 01 20.50821 10 11 50.815 -00 40 13.10 22.0w 15BH518 F51 C~1vYA 2012 02 15.53429 10 08 53.700 -00 28 37.64 22.4G 15BH518 F51 C~2kRR 2012 04 12.27386 10 03 06.440 +00 12 27.94 21.4G 15BH518 F51 C~2kRR 2012 06 11.26882 10 03 45.794 +00 33 35.87 22.4w 15BH518 F51 C~1vYA 2012 06 11.27343 10 03 45.815 +00 33 35.76 22.2w 15BH518 F51 C~1vYA 2012 06 11.27804 10 03 45.836 +00 33 35.79 22.2w 15BH518 F51 C~1vYA 2013 02 21.48436 10 19 20.301 -01 36 50.28 22.4G 15BH518 F51 C~2kRR 2014 01 24.51870 10 33 46.880 -03 02 31.72 21.9G 15BH518 F51 C~2kRR 2014 02 22.48394 10 30 31.799 -02 48 41.03 22.5G 15BH518 F51 C~2kRR 2015 01 24.55333 10 45 00.870 -04 13 50.01 22.2w 15BH518 F51 C~1vYA 2015 01 24.56472 10 45 00.785 -04 13 49.63 22.2w 15BH518 F51 C~1vYA 2015 01 24.58670 10 45 00.647 -04 13 49.42 22.1w 15BH518 F51 C~1vYA 2015 01 24.59805 10 45 00.591 -04 13 49.18 22.4w 15BH518 F51 C~1vYA 2015 01 26.45674 10 44 50.230 -04 13 21.69 22.4G 15BH518 F51 C~2kRR 2015 01 26.46812 10 44 50.150 -04 13 21.67 22.3G 15BH518 F51 C~2kRR 2015 01 26.47946 10 44 50.101 -04 13 21.55 22.2G 15BH518 F51 C~2kRR 2015 01 26.49081 10 44 50.031 -04 13 21.13 22.2G 15BH518 F51 C~2kRR 2015 02 20.43843 10 42 06.402 -04 02 07.96 22.0w 15BH518 F51 C~1vYA 2015 02 20.45111 10 42 06.311 -04 02 07.20 22.1w 15BH518 F51 C~1vYA 2015 02 20.46380 10 42 06.229 -04 02 06.92 22.3w 15BH518 F51 C~1vYA 2015 03 20.35065 10 38 48.672 -03 41 36.18 22.1w 15BH518 F51 C~1vYA 2015 03 20.36335 10 38 48.584 -03 41 35.48 22.0w 15BH518 F51 C~1vYA 2015 03 20.37602 10 38 48.500 -03 41 35.11 22.3w 15BH518 F51 C~1vYA 2015 03 20.42341 10 38 48.153 -03 41 32.87 22.3w 15BH518 F51 C~1vYA 2015 03 21.38481 10 38 41.827 -03 40 45.70 22.0w 15BH518 F51 C~1vYA 2015 03 21.39743 10 38 41.737 -03 40 44.99 21.6w 15BH518 F51 C~1vYA 2015 03 21.40996 10 38 41.666 -03 40 44.40 22.0w 15BH518 F51 C~1vYA 2015 03 21.42261 10 38 41.574 -03 40 43.71 21.9w 15BH518 F51 C~1vYA 2015 04 14.29561 10 36 28.040 -03 21 23.56 23.3G 15BH518 F51 C~2kRR 2015 12 24.63483 10 57 55.974 -05 21 45.29 22.6G 15BH518 F51 C~2kRR 2016 01 11.57426 10 57 12.831 -05 25 23.88 22.0G 15BH518 F51 C~2kRR 2016 01 11.58764 10 57 12.782 -05 25 23.93 22.2G 15BH518 F51 C~2kRR 2016 01 11.60103 10 57 12.721 -05 25 24.00 22.0G 15BH518 F51 C~2kRR 2016 01 11.61440 10 57 12.687 -05 25 24.08 22.2G 15BH518 F51 C~2kRR 2016 01 12.53323 10 57 09.288 -05 25 25.82 22.3G 15BH518 F51 C~2kRR 2016 01 12.54530 10 57 09.234 -05 25 25.72 22.3G 15BH518 F51 C~2kRR 2016 01 12.55737 10 57 09.198 -05 25 25.96 22.3G 15BH518 F51 C~2kRR 2016 01 12.56944 10 57 09.145 -05 25 26.02 22.2G 15BH518 F51 C~2kRR 2016 01 18.50564 10 56 44.636 -05 25 15.55 22.0G 15BH518 F51 C~2kRR 2016 01 18.51766 10 56 44.573 -05 25 15.80 21.8G 15BH518 F51 C~2kRR 2016 01 18.52971 10 56 44.514 -05 25 15.65 22.1G 15BH518 F51 C~2kRR 2016 01 18.54173 10 56 44.465 -05 25 15.57 21.9G 15BH518 F51 C~2kRR 2016 03 14.36335 10 50 43.252 -04 57 27.19 22.1G 15BH518 F51 C~2kRR 2016 04 30.26217 10 46 38.312 -04 20 04.09 22.8G 15BH518 F51 C~2kRR 2016 04 30.27332 10 46 38.289 -04 20 03.57 22.1G 15BH518 F51 C~2kRR 2016 04 30.28443 10 46 38.269 -04 20 03.22 21.9G 15BH518 F51 C~2kRR 2016 04 30.29557 10 46 38.213 -04 20 02.83 21.9G 15BH518 F51 C~2kRR 2017 01 29.55121 11 06 59.772 -06 32 59.95 22.1G 15BH518 F51 C~2kRR 2017 01 29.56433 11 06 59.709 -06 32 59.77 22.0G 15BH518 F51 C~2kRR 2017 01 29.59052 11 06 59.541 -06 32 59.56 22.1G 15BH518 F51 C~2kRR 2017 02 03.58526 11 06 31.256 -06 31 33.00 22.0G 15BH518 F51 C~2kRR 2017 02 22.44486 11 04 28.088 -06 22 38.80 22.2G 15BH518 F51 C~2kRR 2017 03 18.39802 11 01 37.454 -06 05 19.96 22.1G 15BH518 F51 C~2kRR 2017 03 18.41122 11 01 37.351 -06 05 19.44 22.4G 15BH518 F51 C~2kRR 2017 03 18.42445 11 01 37.259 -06 05 18.71 22.2G 15BH518 F51 C~2kRR 2017 03 18.43767 11 01 37.182 -06 05 17.92 22.0G 15BH518 F51 C~2kRR 2017 03 29.34016 11 00 24.323 -05 56 12.78 21.7G 15BH518 F51 C~2kRR 2017 03 29.35267 11 00 24.251 -05 56 12.04 22.0G 15BH518 F51 C~2kRR 2017 03 29.36514 11 00 24.157 -05 56 11.58 22.0G 15BH518 F51 C~2kRR 2017 03 29.37768 11 00 24.082 -05 56 10.85 21.9G 15BH518 F51 C~2kRR 2017 04 01.36560 11 00 05.391 -05 53 38.73 22.1G 15BH518 F51 C~2kRR 2017 04 01.37690 11 00 05.321 -05 53 38.12 21.8G 15BH518 F51 C~2kRR 2017 04 01.38821 11 00 05.245 -05 53 37.55 22.0G 15BH518 F51 C~2kRR 2017 04 01.39954 11 00 05.180 -05 53 36.92 21.7G 15BH518 F51 C~2kRR 2017 12 31.62031 11 19 53.175 -07 40 05.51 22.3G 15BH518 F51 C~2kRR
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 0.02 0.00 -0.08
2 0.0000 0.00 -0.03 0.00 -0.10
3 0.0000 0.00 -0.04 0.00 -0.07
4 7.0364 0.00 0.04 0.00 -0.11
5 7.3209 0.00 -0.05 0.00 0.30
6 7.3209 0.00 0.13 0.00 0.02
7 7.3209 0.00 -0.42 0.00 -0.28
8 7.7461 0.00 0.05 0.00 0.14
9 7.7461 0.00 -0.13 0.00 0.17
10 7.7462 0.00 0.05 0.00 0.05
11 7.9757 0.00 -0.01 0.00 0.31
12 7.9758 0.00 -0.10 0.00 0.02
13 7.9785 0.00 0.06 0.00 -0.03
14 7.9785 0.00 0.22 0.00 0.20
15 7.9786 0.00 -0.02 0.00 0.07
16 8.0498 0.00 0.06 0.00 -0.13
17 8.2052 0.00 -0.12 0.00 -0.30
18 8.3694 0.00 -0.03 0.00 0.09
19 8.3694 0.00 -0.04 0.00 -0.01
20 8.3695 0.00 -0.06 0.00 0.04
21 9.0682 0.00 0.15 0.00 -0.29
22 9.9909 0.00 0.13 0.00 0.08
23 10.0702 0.00 -0.08 0.00 -0.07
24 10.9903 0.00 0.27 0.00 -0.06
25 10.9904 0.00 -0.04 0.00 0.16
26 10.9904 0.00 -0.25 0.00 0.06
27 10.9905 0.00 -0.13 0.00 0.15
28 10.9955 0.00 -0.03 0.00 0.13
29 10.9956 0.00 -0.24 0.00 -0.03
30 10.9956 0.00 0.01 0.00 -0.09
31 10.9956 0.00 -0.05 0.00 0.15
32 11.0639 0.00 0.06 0.00 -0.10
33 11.0640 0.00 0.09 0.00 0.19
34 11.0640 0.00 0.25 0.00 -0.00
35 11.1404 0.00 0.27 0.00 0.18
36 11.1404 0.00 0.24 0.00 0.26
37 11.1404 0.00 0.26 0.00 0.01
38 11.1406 0.00 -0.13 0.00 -0.06
39 11.1432 0.00 0.11 0.00 0.09
40 11.1432 0.00 0.03 0.00 0.18
41 11.1433 0.00 0.22 0.00 0.15
42 11.1433 0.00 0.12 0.00 0.22
43 11.2087 0.00 0.01 0.00 -0.32
44 11.9050 0.00 -0.03 0.00 -0.12
45 11.9541 0.00 -0.01 0.00 0.00
46 11.9542 0.00 0.01 0.00 -0.01
47 11.9542 0.00 -0.15 0.00 -0.05
48 11.9542 0.00 0.10 0.00 -0.09
49 11.9567 0.00 -0.04 0.00 0.02
50 11.9568 0.00 -0.15 0.00 0.13
51 11.9568 0.00 0.02 0.00 -0.09
52 11.9568 0.00 -0.07 0.00 -0.13
53 11.9731 0.00 0.06 0.00 0.18
54 11.9731 0.00 -0.05 0.00 -0.13
55 11.9732 0.00 -0.10 0.00 -0.04
56 11.9732 0.00 0.00 0.00 -0.02
57 12.1260 0.00 -0.01 0.00 -0.40
58 12.2544 0.00 -0.12 0.00 0.01
59 12.2545 0.00 0.01 0.00 0.07
60 12.2545 0.00 0.18 0.00 -0.04
61 12.2545 0.00 -0.19 0.00 -0.10
62 13.0054 0.00 0.04 0.00 -0.04
63 13.0054 0.00 0.19 0.00 -0.05
64 13.0055 0.00 -0.14 0.00 -0.23
65 13.0192 0.00 -0.03 0.00 -0.01
66 13.0708 0.00 -0.10 0.00 -0.05
67 13.1364 0.00 0.00 0.00 0.01
68 13.1364 0.00 -0.14 0.00 -0.11
69 13.1365 0.00 -0.12 0.00 -0.03
70 13.1365 0.00 0.13 0.00 0.12
71 13.1663 0.00 -0.09 0.00 -0.05
72 13.1664 0.00 0.05 0.00 0.05
73 13.1664 0.00 -0.15 0.00 -0.12
74 13.1664 0.00 -0.05 0.00 -0.03
75 13.1746 0.00 -0.09 0.00 -0.02
76 13.1747 0.00 -0.08 0.00 0.01
77 13.1747 0.00 -0.15 0.00 0.01
78 13.1747 0.00 -0.06 0.00 0.06
79 13.9255 0.00 0.09 0.00 0.12
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.
15BH518 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 27.868 27.868 27.868 ecceobj 0.089 0.089 0.089 incobj 10.926 10.926 10.926 qmin 24.233 25.051 24.278 qmax 31.306 31.306 31.371 amean 28.208 28.260 28.299 amin 26.934 27.605 27.121 amax 29.287 29.276 29.264 emean 0.060 0.070 0.081 emin 0.016 0.039 0.063 emax 0.104 0.095 0.109 imean 12.821 12.674 12.320 imin 11.766 11.765 11.768 imax 13.485 13.131 12.601 excite_mean 0.231 0.231 0.229 fracstop 0.013 0.010 0.007 cjmean 2.955 2.955 2.955 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 214.8 288.1 300.2 kozaiamp 175.9 26.4 42.1