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: 12BY154
# Created Sun Dec 22 02:09:19 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 92 observations of 92
# Arc: 17.07y
# First observation: 2005/03/12
# Last observation: 2022/04/08
# Chi-squared of fit: 107.71 DOF: 178 RMS: 0.19
# Min/Max residuals: -0.55 0.78
# Exact a, adot, b, bdot, g, gdot:
1.743158E-05 2.984517E-02 -1.297659E-06 -2.911247E-03 2.763151E-02 -3.878319E-03
# Covariance matrix:
1.4076E-13 -2.4135E-14 -4.5167E-15 1.5387E-15 -2.1017E-14 -3.0319E-14
-2.4135E-14 6.8997E-15 1.6658E-15 -5.9036E-16 1.5697E-16 1.1690E-14
-4.5167E-15 1.6658E-15 8.8393E-14 -8.1935E-15 1.7481E-16 3.2273E-15
1.5387E-15 -5.9036E-16 -8.1935E-15 9.3504E-16 6.8892E-17 -1.1497E-15
-2.1017E-14 1.5697E-16 1.7481E-16 6.8892E-17 4.3477E-14 -1.6785E-15
-3.0319E-14 1.1690E-14 3.2273E-15 -1.1497E-15 -1.6785E-15 2.2780E-14
# lat0 lon0 xBary yBary zBary JD0
4.512964 145.121756 -0.441425 0.069781 -0.882870 2453441.719003
# Heliocentric elements and errors
Epoch: 2453442.5000 = 2005/03/13
Mean Anomaly: 324.70673 +/- 0.005
Argument of Peri: 190.91417 +/- 0.006
Long of Asc Node: 3.82217 +/- 0.000
Inclination: 7.12938 +/- 0.000
Eccentricity: 0.17403331 +/- 0.0000
Semi-Major Axis: 42.59113967 +/- 0.0016
Time of Perihelion: 2463395.7905 +/- 5.2
Perihelion: 35.17886268 +/- 0.0015
Aphelion: 50.00341666 +/- 0.0020
Period (y) 277.9631 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -30.58120330 +/- 0.0002
Ecliptic Y 20.77442130 +/- 0.0002
Ecliptic Z 2.84760675 +/- 0.0000
Ecliptic XDOT -0.00139527 +/- 0.0000
Ecliptic YDOT -0.00263921 +/- 0.0000
Ecliptic ZDOT -0.00031774 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.07965590 +/- 0.0002
Geocenter to KBO 36.19068829 +/- 0.0003
# Hcoef: 6.86
The following table shows the complete astrometric record for 12BY154. 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 (12BY154) followed by the observatory code and reference code for the source of the astrometry.
2005 03 12.218260 09 55 56.01 +17 23 40.2 22.3V 12BY154 645 C~2VVH 2005 03 12.218675 09 55 56.01 +17 23 40.1 22.3V 12BY154 645 C~2VVH 2005 03 12.219089 09 55 56.01 +17 23 40.4 22.2V 12BY154 645 C~2VVH 2005 03 12.219504 09 55 56.01 +17 23 40.3 22.1V 12BY154 645 C~2VVH 2005 03 12.221577 09 55 56.00 +17 23 40.1 22.9V 12BY154 645 C~2VVH 2005 03 12.221992 09 55 56.01 +17 23 40.0 22.9V 12BY154 645 C~2VVH 2005 11 12.507423 10 08 37.94 +16 01 02.4 22.4V 12BY154 645 C~2VVH 2005 11 12.508252 10 08 37.94 +16 01 02.4 22.1V 12BY154 645 C~2VVH 2005 11 12.510740 10 08 37.93 +16 01 01.9 22.8V 12BY154 645 C~2VVH 2006 03 02.24393 10 03 18.62 +16 34 40.9 21.7R 12BY154 695 C~1w3p 2006 03 02.30137 10 03 18.34 +16 34 42.3 12BY154 695 C~1w3p 2006 03 02.35617 10 03 18.01 +16 34 43.4 12BY154 695 C~1w3p 2010 02 20.35237 10 30 08.442 +13 18 41.81 21.7r 12BY154 F51 C~1w3p 2010 06 01.28479 10 25 22.408 +13 35 40.73 22.5G 12BY154 F51 C~2rXr 2011 02 03.59515 10 38 03.326 +12 19 59.52 22.2G 12BY154 F51 C~2rXr 2011 02 03.60659 10 38 03.271 +12 19 59.77 22.0G 12BY154 F51 C~2rXr 2011 02 04.59242 10 37 58.509 +12 20 28.36 22.4r 12BY154 F51 C~1w3p 2011 02 05.58695 10 37 53.660 +12 20 57.44 22.5G 12BY154 F51 C~2rXr 2012 01 21.44598 10 45 28.167 +11 22 44.22 22.7w 12BY154 F51 C~1w3p 2012 01 21.46008 10 45 28.102 +11 22 45.15 22.6w 12BY154 F51 C~1w3p 2012 01 21.47418 10 45 28.094 +11 22 45.35 22.3w 12BY154 F51 C~1w3p 2012 01 21.48834 10 45 28.013 +11 22 45.34 22.5w 12BY154 F51 C~1w3p 2012 02 16.51560 10 43 27.151 +11 34 59.44 22.8w 12BY154 F51 C~1w3p 2012 02 16.51919 10 43 27.109 +11 34 59.62 22.8w 12BY154 F51 C~1w3p 2012 02 16.53024 10 43 27.075 +11 34 59.88 22.7w 12BY154 F51 C~1w3p 2012 02 16.54486 10 43 26.995 +11 35 00.10 22.7w 12BY154 F51 C~1w3p 2012 02 16.54853 10 43 26.974 +11 35 00.58 22.7w 12BY154 F51 C~1w3p 2012 02 16.55958 10 43 26.915 +11 35 00.60 22.5w 12BY154 F51 C~1w3p 2012 02 16.56323 10 43 26.886 +11 35 00.99 22.9w 12BY154 F51 C~1w3p 2012 03 13.38620 10 41 10.451 +11 47 33.73 22.3r 12BY154 F51 C~1w3p 2013 02 14.39267 10 50 02.222 +10 42 12.74 22.1w 12BY154 F51 C~1w3p 2013 02 14.40728 10 50 02.142 +10 42 13.03 22.3w 12BY154 F51 C~1w3p 2013 02 14.42187 10 50 02.062 +10 42 13.53 22.0w 12BY154 F51 C~1w3p 2013 02 14.43656 10 50 01.992 +10 42 13.97 22.4w 12BY154 F51 C~1w3p 2013 03 03.47392 10 48 32.394 +10 50 48.49 21.3G 12BY154 F51 C~2rXr 2013 03 03.48548 10 48 32.331 +10 50 48.40 21.6G 12BY154 F51 C~2rXr 2013 03 03.49815 10 48 32.259 +10 50 48.75 21.6i 12BY154 F51 C~1w3p 2013 03 06.34176 10 48 17.172 +10 52 12.87 22.0G 12BY154 F51 C~2rXr 2013 12 15.65065 10 59 29.638 +09 29 20.27 22.0G 12BY154 F51 C~2rXr 2014 02 26.35320 10 55 29.886 +09 55 14.50 22.4w 12BY154 F51 C~1w3p 2014 02 26.37701 10 55 29.723 +09 55 15.23 22.2w 12BY154 F51 C~1w3p 2014 02 26.38893 10 55 29.689 +09 55 15.68 22.5w 12BY154 F51 C~1w3p 2014 03 06.33929 10 54 47.468 +09 59 16.54 22.2G 12BY154 F51 C~2rXr 2014 04 04.28744 10 52 24.410 +10 11 56.23 23.0G 12BY154 F51 C~2rXr 2014 06 19.27827 10 51 06.800 +10 11 26.46 22.0G 12BY154 F51 C~2rXr 2014 11 26.62726 11 05 27.446 +08 38 01.43 21.1G 12BY154 F51 C~2rXr 2014 12 09.58701 11 05 46.521 +08 36 37.34 22.4G 12BY154 F51 C~2rXr 2015 01 15.63881 11 05 03.128 +08 42 31.71 22.6G 12BY154 F51 C~2rXr 2015 01 15.64517 11 05 03.119 +08 42 31.25 22.2G 12BY154 F51 C~2rXr 2015 01 15.65156 11 05 03.083 +08 42 31.50 22.3G 12BY154 F51 C~2rXr 2015 01 15.65789 11 05 03.059 +08 42 31.90 23.0G 12BY154 F51 C~2rXr 2015 02 16.42541 11 02 51.422 +08 56 23.25 22.6G 12BY154 F51 C~2rXr 2015 02 16.43688 11 02 51.358 +08 56 23.56 22.4G 12BY154 F51 C~2rXr 2015 02 17.53546 11 02 45.818 +08 56 56.95 22.1G 12BY154 F51 C~2rXr 2015 02 17.54715 11 02 45.772 +08 56 57.26 22.2G 12BY154 F51 C~2rXr 2015 02 17.55896 11 02 45.718 +08 56 57.82 22.5G 12BY154 F51 C~2rXr 2015 02 17.57082 11 02 45.647 +08 56 57.98 22.5G 12BY154 F51 C~2rXr 2015 06 10.29656 10 57 03.696 +09 22 57.33 22.8G 12BY154 F51 C~2rXr 2015 12 16.59673 11 12 09.037 +07 43 15.29 22.4G 12BY154 F51 C~2rXr 2016 01 13.53518 11 11 34.592 +07 47 45.51 22.6G 12BY154 F51 C~2rXr 2016 04 05.29779 11 05 13.972 +08 25 23.51 22.4G 12BY154 F51 C~2rXr 2017 01 02.57603 11 18 19.307 +06 50 50.27 22.7G 12BY154 F51 C~2rXr 2017 01 02.57927 11 18 19.280 +06 50 50.53 22.7G 12BY154 F51 C~2rXr 2017 01 02.58781 11 18 19.293 +06 50 50.50 23.0G 12BY154 F51 C~2rXr 2017 01 02.59102 11 18 19.269 +06 50 50.61 22.4G 12BY154 F51 C~2rXr 2017 01 02.59954 11 18 19.269 +06 50 50.55 22.0G 12BY154 F51 C~2rXr 2017 01 02.60275 11 18 19.275 +06 50 50.26 22.4G 12BY154 F51 C~2rXr 2017 01 02.61133 11 18 19.243 +06 50 50.65 23.4G 12BY154 F51 C~2rXr 2017 01 02.61454 11 18 19.241 +06 50 50.78 23.1G 12BY154 F51 C~2rXr 2017 03 18.30293 11 13 11.628 +07 22 34.42 22.4G 12BY154 F51 C~2rXr 2017 03 18.31457 11 13 11.573 +07 22 34.76 22.3G 12BY154 F51 C~2rXr 2017 03 18.32625 11 13 11.511 +07 22 35.08 22.0G 12BY154 F51 C~2rXr 2017 03 18.33794 11 13 11.450 +07 22 35.42 22.4G 12BY154 F51 C~2rXr 2017 03 28.45249 11 12 20.382 +07 27 21.62 22.2G 12BY154 F51 C~2rXr 2017 03 28.46431 11 12 20.317 +07 27 22.13 21.9G 12BY154 F51 C~2rXr 2017 03 28.47616 11 12 20.265 +07 27 22.25 22.8G 12BY154 F51 C~2rXr 2017 03 28.48806 11 12 20.182 +07 27 22.54 22.4G 12BY154 F51 C~2rXr 2017 04 22.26920 11 10 35.963 +07 36 24.37 22.5G 12BY154 F51 C~2rXr 2017 04 22.28212 11 10 35.928 +07 36 24.77 22.3G 12BY154 F51 C~2rXr 2017 04 22.29397 11 10 35.897 +07 36 24.85 21.7G 12BY154 F51 C~2rXr 2017 04 22.30584 11 10 35.834 +07 36 25.23 21.8G 12BY154 F51 C~2rXr 2017 12 29.60572 11 24 46.440 +05 55 26.20 22.3G 12BY154 F51 C~2rXr 2017 12 29.61772 11 24 46.423 +05 55 26.19 22.8G 12BY154 F51 C~2rXr 2017 12 29.62972 11 24 46.410 +05 55 26.38 22.7G 12BY154 F51 C~2rXr 2017 12 29.64170 11 24 46.407 +05 55 26.40 22.3G 12BY154 F51 C~2rXr 2018 03 18.35672 11 19 42.175 +06 27 00.48 21.4G 12BY154 F51 C~2rXr 2018 03 18.36900 11 19 42.117 +06 27 01.16 22.1G 12BY154 F51 C~2rXr 2018 03 18.38120 11 19 42.055 +06 27 01.61 22.7G 12BY154 F51 C~2rXr 2018 03 18.39340 11 19 41.969 +06 27 01.84 22.1G 12BY154 F51 C~2rXr 2022 04 08.156050 11 43 54.646 +02 50 58.57 22.4G 12BY154 G37 C~5ZYm 2022 04 08.191040 11 43 54.459 +02 50 59.74 12BY154 G37 C~5ZYm 2022 04 08.225970 11 43 54.317 +02 51 00.73 12BY154 G37 C~5ZYm
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 -0.10 0.00 -0.05
2 0.0000 0.00 -0.07 0.00 -0.15
3 0.0000 0.00 -0.04 0.00 0.14
4 0.0000 0.00 -0.01 0.00 0.03
5 0.0000 0.00 -0.00 0.00 -0.21
6 0.0000 0.00 0.18 0.00 -0.32
7 0.6716 0.00 0.23 0.00 0.14
8 0.6716 0.00 0.20 0.00 0.14
9 0.6716 0.00 -0.02 0.00 -0.35
10 0.9720 0.00 -0.44 0.00 0.04
11 0.9722 0.00 -0.01 0.00 0.03
12 0.9723 0.00 -0.55 0.00 -0.20
13 4.9449 0.00 0.78 0.00 0.67
14 5.2213 0.00 -0.08 0.00 0.19
15 5.8984 0.00 -0.03 0.00 -0.13
16 5.8984 0.00 -0.01 0.00 -0.21
17 5.9011 0.00 0.03 0.00 -0.09
18 5.9038 0.00 0.07 0.00 0.12
19 6.8617 0.00 -0.13 0.00 0.09
20 6.8617 0.00 -0.27 0.00 0.67
21 6.8618 0.00 0.45 0.00 0.51
22 6.8618 0.00 0.08 0.00 0.15
23 6.9331 0.00 0.10 0.00 -0.02
24 6.9331 0.00 -0.24 0.00 0.05
25 6.9331 0.00 0.12 0.00 -0.02
26 6.9331 0.00 0.08 0.00 -0.24
27 6.9331 0.00 0.06 0.00 0.13
28 6.9332 0.00 0.05 0.00 -0.18
29 6.9332 0.00 -0.10 0.00 0.10
30 7.0039 0.00 0.19 0.00 -0.04
31 7.9293 0.00 0.02 0.00 0.25
32 7.9293 0.00 -0.05 0.00 0.09
33 7.9294 0.00 -0.11 0.00 0.15
34 7.9294 0.00 -0.02 0.00 0.15
35 7.9761 0.00 -0.09 0.00 0.15
36 7.9761 0.00 -0.09 0.00 -0.28
37 7.9761 0.00 -0.14 0.00 -0.31
38 7.9839 0.00 0.07 0.00 -0.00
39 8.7623 0.00 -0.22 0.00 -0.49
40 8.9614 0.00 0.27 0.00 0.05
41 8.9614 0.00 -0.26 0.00 0.05
42 8.9615 0.00 0.19 0.00 0.13
43 8.9832 0.00 0.26 0.00 0.18
44 9.0625 0.00 -0.18 0.00 -0.08
45 9.2705 0.00 0.35 0.00 -0.23
46 9.7095 0.00 0.35 0.00 -0.35
47 9.7450 0.00 0.01 0.00 0.31
48 9.8465 0.00 0.03 0.00 0.31
49 9.8465 0.00 0.19 0.00 -0.28
50 9.8465 0.00 -0.05 0.00 -0.16
51 9.8465 0.00 -0.12 0.00 0.12
52 9.9335 0.00 -0.02 0.00 -0.05
53 9.9335 0.00 -0.11 0.00 -0.09
54 9.9365 0.00 -0.18 0.00 0.01
55 9.9366 0.00 0.03 0.00 -0.03
56 9.9366 0.00 0.13 0.00 0.17
57 9.9366 0.00 -0.02 0.00 -0.03
58 10.2453 0.00 0.30 0.00 0.03
59 10.7635 0.00 -0.15 0.00 -0.43
60 10.8400 0.00 -0.07 0.00 0.01
61 11.0666 0.00 -0.16 0.00 0.04
62 11.8121 0.00 0.02 0.00 -0.04
63 11.8121 0.00 -0.31 0.00 0.19
64 11.8121 0.00 0.09 0.00 0.07
65 11.8121 0.00 -0.20 0.00 0.14
66 11.8121 0.00 0.00 0.00 -0.01
67 11.8121 0.00 0.17 0.00 -0.34
68 11.8122 0.00 -0.11 0.00 -0.04
69 11.8122 0.00 -0.07 0.00 0.06
70 12.0167 0.00 -0.11 0.00 -0.01
71 12.0167 0.00 -0.02 0.00 -0.02
72 12.0167 0.00 -0.03 0.00 -0.04
73 12.0168 0.00 -0.02 0.00 -0.05
74 12.0444 0.00 0.06 0.00 -0.07
75 12.0445 0.00 -0.04 0.00 0.12
76 12.0445 0.00 0.07 0.00 -0.08
77 12.0445 0.00 -0.29 0.00 -0.10
78 12.1124 0.00 -0.17 0.00 -0.13
79 12.1124 0.00 -0.02 0.00 0.07
80 12.1125 0.00 0.13 0.00 -0.04
81 12.1125 0.00 -0.19 0.00 0.15
82 12.8005 0.00 0.02 0.00 0.04
83 12.8005 0.00 -0.07 0.00 -0.05
84 12.8006 0.00 -0.09 0.00 0.06
85 12.8006 0.00 0.03 0.00 0.00
86 13.0161 0.00 -0.04 0.00 -0.30
87 13.0162 0.00 0.07 0.00 0.01
88 13.0162 0.00 0.11 0.00 0.09
89 13.0162 0.00 -0.20 0.00 -0.05
90 17.0731 0.00 0.12 0.00 -0.10
91 17.0732 0.00 -0.13 0.00 0.10
92 17.0733 0.00 0.29 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.
12BY154 quality flag:3 Type: 5:3EE 5:3EE 5:3EE axisobj 42.241 42.241 42.241 ecceobj 0.166 0.166 0.166 incobj 7.155 7.155 7.155 qmin 34.170 34.170 34.170 qmax 50.710 50.708 50.712 amean 42.328 42.328 42.328 amin 41.956 41.954 41.957 amax 42.743 42.745 42.741 emean 0.174 0.174 0.174 emin 0.157 0.157 0.157 emax 0.189 0.189 0.189 imean 7.220 7.220 7.220 imin 6.651 6.651 6.651 imax 7.904 7.904 7.904 excite_mean 0.215 0.215 0.215 fracstop 1.000 1.000 1.000 cjmean 3.027 3.027 3.027 libcent 0 179.9 179.9 179.8 libamp 0 27.1 26.8 27.2 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 177.5 177.8 177.4 kozaiamp 180.0 180.0 180.0