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: 19255 # Created Wed Dec 18 02:06:43 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 72 observations of 75 # Arc: 21.00y # First observation: 1994/11/08 # Last observation: 2015/11/08 # Chi-squared of fit: 1205.69 DOF: 138 RMS: 0.72 # Min/Max residuals: -2.03 1.74 # Exact a, adot, b, bdot, g, gdot: 1.361066E-05 2.210023E-02 -2.457122E-06 5.645736E-04 2.344929E-02 -4.634293E-04 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 -0.280720 62.109834 0.279357 -0.004691 -0.955620 2449664.569508 # Heliocentric elements and errors Epoch: 2449664.5000 = 1994/11/08 Mean Anomaly: 231.06029 +/- 0.000 Argument of Peri: 121.38077 +/- 0.000 Long of Asc Node: 72.37621 +/- 0.000 Inclination: 1.48786 +/- 0.000 Eccentricity: 0.03557183 +/- 0.0000 Semi-Major Axis: 42.61140085 +/- 0.0000 Time of Perihelion: 2486053.6008 +/- 0.0 Perihelion: 41.09563514 +/- 0.0000 Aphelion: 44.12716656 +/- 0.0000 Period (y) 278.1614 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 20.64228937 +/- 0.0000 Ecliptic Y 38.39828894 +/- 0.0000 Ecliptic Z -0.20903142 +/- 0.0000 Ecliptic XDOT -0.00229936 +/- 0.0000 Ecliptic YDOT 0.00115735 +/- 0.0000 Ecliptic ZDOT 0.00006602 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.59561779 +/- 0.0000 Geocenter to KBO 42.64526187 +/- 0.0000 # Hcoef: 6.94
The following table shows the complete astrometric record for 19255. 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 (19255) followed by the observatory code and reference code for the source of the astrometry.
1994 11 08.0688 04 00 19.40 +20 18 30.5 19255 950 C24710 1994 11 08.1296 04 00 19.09 +20 18 29.8 22.3R 19255 950 C24710 1994 11 08.1806 04 00 18.83 +20 18 29.0 19255 950 C24710 1994 11 08.2324 04 00 18.61 +20 18 28.2 19255 950 C24710 1995 01 31.8668 03 54 51.08 +20 03 15.7 19255 950 C24710 1995 01 31.9325 03 54 50.99 +20 03 15.7 19255 950 C24710 1995 01 31.9925 03 54 50.91 +20 03 15.3 19255 950 C24710 1995 02 01.9005 03 54 50.01 +20 03 13.7 19255 950 C24710 1995 02 01.9563 03 54 49.92 +20 03 13.1 19255 950 C24710 1995 12 24.32604 04 01 53.09 +20 25 10.8 19255 568 C26491 1995 12 24.35164 04 01 52.98 +20 25 10.5 19255 568 C26491 1995 12 24.36920 04 01 52.89 +20 25 10.3 19255 568 C26491 1995 12 25.30375 04 01 48.91 +20 24 59.7 19255 568 C26491 1995 12 25.31872 04 01 48.86 +20 24 59.9 19255 568 C26491 1995 12 25.33267 04 01 48.78 +20 24 59.7 19255 568 C26491 1995 12 27.44830 04 01 39.96 +20 24 36.4 19255 568 C26491 1995 12 27.46473 04 01 39.89 +20 24 36.2 19255 568 C26491 1996 01 20.13985 04 00 22.71 +20 21 11.0 19255 711 C27069 1996 01 20.14513 04 00 22.73 +20 21 09.4 19255 711 C27069 1996 01 20.24095 04 00 22.62 +20 21 10.4 19255 711 C27069 1996 01 20.25083 04 00 22.50 +20 21 07.6 19255 711 C27069 1996 01 21.16967 04 00 20.36 +20 21 02.9 19255 711 C27069 1996 01 21.17796 04 00 20.43 +20 21 05.1 19255 711 C27069 1996 01 21.18587 04 00 20.30 +20 21 05.6 19255 675 C26659 1996 01 21.22190 04 00 20.31 +20 21 03.1 19255 711 C27069 1996 01 21.22985 04 00 20.32 +20 21 03.6 19255 711 C27069 1996 01 21.25357 04 00 20.44 +20 21 01.9 19255 711 C27069 1996 01 21.31547 04 00 20.06 +20 21 04.3 19255 711 C27069 1996 01 22.11589 04 00 18.36 +20 20 58.8 19255 711 C27069 1996 01 22.12419 04 00 18.28 +20 20 57.5 19255 711 C27069 1996 01 22.13373 04 00 18.30 +20 20 58.4 19255 711 C27069 1996 01 22.14389 04 00 18.47 +20 20 58.1 19255 711 C27069 1996 01 22.19182 04 00 18.22 +20 20 58.6 19255 711 C27069 1996 01 22.20000 04 00 18.10 +20 20 58.0 19255 711 C27069 1996 01 22.20759 04 00 18.20 +20 20 57.5 19255 711 C27069 1996 01 22.21525 04 00 18.20 +20 20 57.1 19255 711 C27069 1996 01 22.25831 04 00 18.05 +20 20 57.5 19255 711 C27069 1996 01 23.16530 04 00 16.13 +20 20 54.0 19255 711 C27069 1996 01 23.17357 04 00 16.09 +20 20 52.9 19255 711 C27069 1996 01 23.27290 04 00 16.04 +20 20 53.7 19255 711 C27069 1996 01 24.10591 04 00 14.19 +20 20 48.8 19255 675 C26659 1996 01 24.22181 04 00 13.99 +20 20 48.4 19255 675 C26659 1996 11 12.17233 04 10 30.85 +20 50 17.0 19255 711 C28518 1996 11 12.17996 04 10 30.87 +20 50 16.8 19255 711 C28518 1996 11 12.24087 04 10 30.55 +20 50 15.4 19255 711 C28518 1996 11 12.26545 04 10 30.46 +20 50 16.1 19255 711 C28518 1996 11 12.31691 04 10 30.21 +20 50 14.9 19255 711 C28518 1996 11 12.33470 04 10 30.07 +20 50 14.3 19255 711 C28518 1996 11 12.34240 04 10 30.02 +20 50 14.4 19255 711 C28518 1996 11 12.38673 04 10 29.83 +20 50 14.1 19255 711 C28518 1996 11 12.39464 04 10 29.81 +20 50 13.4 19255 711 C28518 1996 11 13.17554 04 10 25.99 +20 50 04.6 19255 711 C28518 1996 11 13.20119 04 10 25.80 +20 50 04.2 19255 711 C28518 1996 11 13.27767 04 10 25.43 +20 50 03.6 19255 711 C28518 1996 11 13.28559 04 10 25.33 +20 50 02.6 19255 711 C28518 1996 11 13.29362 04 10 25.45 +20 50 03.2 19255 711 C28518 1996 11 13.34910 04 10 25.01 +20 50 02.1 19255 711 C28518 1997 02 07.13425 04 05 06.56 +20 36 31.2 19255 697 C29057 1997 02 08.14550 04 05 05.90 +20 36 30.6 19255 697 C29057 1997 02 09.22130 04 05 05.32 +20 36 29.1 19255 697 C29057 1997 10 26.04306 04 17 08.64 +21 08 57.9 19255 950 Ca0100 1997 10 26.13632 04 17 08.23 +21 08 56.8 19255 950 Ca0100 1997 10 26.20118 04 17 07.95 +21 08 56.1 19255 950 Ca0100 1997 10 27.06154 04 17 04.44 +21 08 47.6 19255 950 Ca0100 1997 10 27.10141 04 17 04.24 +21 08 47.3 19255 950 Ca0100 2000 11 26.30740 04 30 49.85 +21 46 27.5 23.6R 19255 695 Cc2072 2000 11 26.41091 04 30 49.32 +21 46 26.2 23.4R 19255 695 Cc2072 2000 11 27.33604 04 30 44.61 +21 46 16.5 22.5R 19255 695 Cc2072 2014 10 22.41143 05 50 53.46 +23 47 50.3 22.9R 19255 G37 C~1C0d 2014 10 22.50326 05 50 53.25 +23 47 50.3 19255 G37 C~1C0d 2015 11 08.38826 05 55 43.15 +23 50 45.9 22.9R 19255 G37 C~1dpk 2015 11 08.50395 05 55 42.80 +23 50 45.6 19255 G37 C~1dpk 2016 02 04.18638 05 48 51.96 +23 49 56.4 23.1R 19255 G37 C~1mAE 2016 02 04.28035 05 48 51.64 +23 49 56.4 19255 G37 C~1mAE 2016 02 04.33667 05 48 51.41 +23 49 56.2 19255 G37 C~1mAE
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 0.15 0.00 0.63
2 0.0002 0.00 -0.07 0.00 0.74
3 0.0003 0.00 -0.27 0.00 0.63
4 0.0004 0.00 0.18 0.00 0.54
5 0.2322 0.00 -0.72 0.00 -0.34
6 0.2323 0.00 -0.91 0.00 -0.16
7 0.2325 0.00 -1.07 0.00 -0.39
8 0.2350 0.00 -0.38 0.00 0.19
9 0.2351 0.00 -0.83 0.00 -0.28
10 1.1260 0.00 -0.17 0.00 0.22
11 1.1260 0.00 -0.16 0.00 0.21
12 1.1261 0.00 -0.36 0.00 0.21
13 1.1286 0.00 -0.88 0.00 0.25
14 1.1287 0.00 -0.67 0.00 0.61
15 1.1287 0.00 -0.97 0.00 0.57
16 1.1345 0.00 -1.71 0.00 0.85
17 1.1346 0.00 -1.74 0.00 0.83
18 1.1994 0.00 -0.55 0.00 0.69
19 1.1994 0.00 -0.06 0.00 -0.88
20 1.1996 0.00 1.74 0.00 0.71
21 1.1997 0.00 0.29 0.00 -2.03
22 1.2022 0.00 -0.46 0.00 -1.35
23 1.2022 0.00 0.88 0.00 0.90
24 1.2022 0.00 -0.84 0.00 1.45
25 1.2023 0.00 0.60 0.00 -0.84
26 1.2024 0.00 1.03 0.00 -0.29
27 1.2024 0.00 ( 3.64) 0.00 ( -1.85)
28 1.2026 0.00 0.05 0.00 0.92
29 1.2048 0.00 0.68 0.00 -0.12
30 1.2048 0.00 -0.24 0.00 -1.38
31 1.2048 0.00 0.38 0.00 -0.43
32 1.2049 0.00 ( 3.27) 0.00 ( -0.67)
33 1.2050 0.00 1.12 0.00 0.10
34 1.2050 0.00 -0.41 0.00 -0.45
35 1.2050 0.00 1.34 0.00 -0.91
36 1.2051 0.00 1.59 0.00 -1.27
37 1.2052 0.00 0.77 0.00 -0.62
38 1.2077 0.00 0.47 0.00 0.72
39 1.2077 0.00 0.14 0.00 -0.34
40 1.2080 0.00 ( 2.54) 0.00 ( 1.01)
41 1.2102 0.00 -0.26 0.00 0.34
42 1.2105 0.00 0.29 0.00 0.52
43 2.0126 0.00 0.10 0.00 0.35
44 2.0126 0.00 0.96 0.00 0.25
45 2.0128 0.00 0.66 0.00 -0.41
46 2.0129 0.00 1.13 0.00 0.59
47 2.0130 0.00 1.20 0.00 0.03
48 2.0130 0.00 0.42 0.00 -0.35
49 2.0131 0.00 0.24 0.00 -0.16
50 2.0132 0.00 0.68 0.00 0.10
51 2.0132 0.00 0.97 0.00 -0.50
52 2.0154 0.00 0.61 0.00 0.46
53 2.0154 0.00 -0.34 0.00 0.38
54 2.0156 0.00 -0.20 0.00 0.72
55 2.0157 0.00 -1.11 0.00 -0.18
56 2.0157 0.00 1.29 0.00 0.52
57 2.0158 0.00 -1.17 0.00 0.11
58 2.2507 0.00 0.68 0.00 0.13
59 2.2535 0.00 0.53 0.00 0.68
60 2.2564 0.00 0.58 0.00 0.12
61 2.9650 0.00 -0.61 0.00 -0.79
62 2.9653 0.00 -0.94 0.00 -0.98
63 2.9655 0.00 -1.08 0.00 -1.04
64 2.9678 0.00 -0.74 0.00 -1.01
65 2.9679 0.00 -1.21 0.00 -0.91
66 6.0513 0.00 -0.18 0.00 0.45
67 6.0516 0.00 -0.09 0.00 0.25
68 6.0541 0.00 0.03 0.00 0.29
69 19.9544 0.00 0.09 0.00 0.00
70 19.9546 0.00 0.20 0.00 -0.03
71 21.0002 0.00 0.06 0.00 0.35
72 21.0005 0.00 1.19 0.00 0.02
73 21.2406 0.00 -0.31 0.00 -0.09
74 21.2408 0.00 -0.32 0.00 0.02
75 21.2410 0.00 -0.92 0.00 -0.10
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.
19255 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.093 43.093 43.093 ecceobj 0.029 0.029 0.029 incobj 1.485 1.485 1.485 qmin 40.503 40.511 40.497 qmax 45.403 45.394 45.403 amean 42.836 42.835 42.836 amin 42.507 42.510 42.508 amax 43.174 43.175 43.174 emean 0.029 0.029 0.030 emin 0.010 0.010 0.010 emax 0.052 0.052 0.052 imean 1.120 1.120 1.120 imin 0.523 0.523 0.523 imax 1.488 1.489 1.488 excite_mean 0.036 0.036 0.036 fracstop 1.000 1.000 1.000 cjmean 3.086 3.086 3.086 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 173.6 173.5 173.8 kozaiamp 180.0 180.0 180.0