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: 52975 # Created Sun Dec 22 02:06:47 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 84 observations of 84 # Arc: 21.28y # First observation: 1998/10/12 # Last observation: 2020/01/23 # Chi-squared of fit: 177.82 DOF: 162 RMS: 0.26 # Min/Max residuals: -0.79 1.43 # Exact a, adot, b, bdot, g, gdot: 2.532068E-05 9.019639E-02 5.756259E-06 2.036520E-02 5.730469E-02 2.570234E-02 # 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 -1.156251 48.575179 0.486855 -0.017634 -0.862332 2451098.935271 # Heliocentric elements and errors Epoch: 2451098.5000 = 1998/10/12 Mean Anomaly: 23.84363 +/- 0.000 Argument of Peri: 301.49561 +/- 0.000 Long of Asc Node: 51.95508 +/- 0.000 Inclination: 12.62013 +/- 0.000 Eccentricity: 0.38417794 +/- 0.0000 Semi-Major Axis: 26.41429495 +/- 0.0000 Time of Perihelion: 2447814.3206 +/- 0.0 Perihelion: 16.26650561 +/- 0.0000 Aphelion: 36.56208430 +/- 0.0000 Period (y) 135.7584 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 12.48738861 +/- 0.0000 Ecliptic Y 13.40608321 +/- 0.0000 Ecliptic Z -0.35202535 +/- 0.0000 Ecliptic XDOT -0.00240608 +/- 0.0000 Ecliptic YDOT 0.00379560 +/- 0.0000 Ecliptic ZDOT 0.00094797 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 18.32423969 +/- 0.0000 Geocenter to KBO 17.45048896 +/- 0.0000 # Hcoef: 8.89
The following table shows the complete astrometric record for 52975. 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 (52975) followed by the observatory code and reference code for the source of the astrometry.
1998 10 12.43454 03 05 47.77 +16 14 29.8 22.5V 52975 691 Ca4828 1998 10 12.45637 03 05 47.57 +16 14 28.9 22.5V 52975 691 Ca4828 1998 10 12.47876 03 05 47.37 +16 14 27.9 22.1V 52975 691 Ca4828 1998 10 18.36511 03 04 54.09 +16 11 49.3 21.9V 52975 691 Ca4828 1998 10 18.38773 03 04 53.91 +16 11 48.7 21.9V 52975 691 Ca4828 1998 10 18.41832 03 04 53.59 +16 11 47.5 21.8V 52975 691 Ca4828 1998 10 28.39461 03 03 15.66 +16 06 49.2 22.3V 52975 691 C48547 1998 10 28.41605 03 03 15.42 +16 06 48.3 22.3V 52975 691 C48547 1998 10 28.43854 03 03 15.20 +16 06 47.4 22.4V 52975 691 C48547 1999 10 16.37780 03 24 27.73 +18 38 35.7 22.1V 52975 691 Ca7321 1999 10 16.41973 03 24 27.41 +18 38 35.7 21.6V 52975 691 Ca7321 1999 10 16.44738 03 24 27.18 +18 38 34.8 22.1V 52975 691 Ca7321 1999 10 17.36925 03 24 19.12 +18 38 16.4 22.4V 52975 691 Ca7321 1999 10 17.39804 03 24 18.96 +18 38 15.6 22.4V 52975 691 Ca7321 1999 10 17.42572 03 24 18.64 +18 38 15.0 22.5V 52975 691 Ca7321 1999 12 05.14678 03 16 08.70 +18 16 46.8 21.1R 52975 829 Cd2213 1999 12 05.16484 03 16 08.50 +18 16 47.0 52975 829 Cd2213 2000 01 02.18515 03 12 32.07 +18 07 48.3 21.5R 52975 697 Ca8493 2000 01 02.32828 03 12 31.27 +18 07 46.5 21.6R 52975 697 Ca8493 2000 01 03.23405 03 12 26.45 +18 07 37.1 21.5R 52975 697 Ca8493 2000 11 28.30228 03 36 02.44 +20 34 42.6 21.1R 52975 695 Cc2187 2000 11 28.35573 03 36 01.88 +20 34 41.3 21.1R 52975 695 Cc2187 2000 11 29.28721 03 35 52.30 +20 34 18.1 21.2R 52975 695 Cc2187 2002 10 30.40597 04 17 32.57 +24 30 33.1 52975 695 Ch3055 2002 10 30.41891 04 17 32.45 +24 30 33.1 52975 695 Ch3055 2002 10 30.46756 04 17 32.01 +24 30 32.8 52975 695 Ch3055 2008 09 25.65865 05 56 27.98 +30 45 02.6 24.6R 52975 250 S~06FL 2008 09 25.66560 05 56 27.99 +30 45 02.7 52975 250 S~06FM 2008 09 25.67879 05 56 28.01 +30 45 02.7 52975 250 S~06FM 2010 01 07.352462 06 00 00.793 +31 45 21.71 22.0G 52975 F51 C~41k3 2010 01 07.362189 06 00 00.703 +31 45 21.57 21.5G 52975 F51 C~41k3 2013 09 14.608901 07 01 48.893 +32 13 20.75 22.7G 52975 F51 C~41k3 2013 10 21.566665 07 03 27.458 +32 27 20.74 22.0G 52975 F51 C~41k3 2013 11 27.585538 07 00 59.823 +32 45 18.33 22.2G 52975 F51 C~41k3 2013 11 28.487981 07 00 53.568 +32 45 43.98 22.3G 52975 F51 C~41k3 2013 12 26.373655 06 56 59.559 +32 56 51.50 22.1G 52975 F51 C~41k3 2013 12 26.389073 06 56 59.383 +32 56 52.20 22.2G 52975 F51 C~41k3 2013 12 26.404510 06 56 59.258 +32 56 52.23 22.2G 52975 F51 C~41k3 2014 12 26.558051 07 09 35.374 +33 00 35.73 22.5G 52975 F51 C~41k3 2015 01 18.291277 07 06 06.138 +33 06 48.00 22.1G 52975 F51 C~41k3 2015 01 18.304570 07 06 06.031 +33 06 48.23 22.6G 52975 F51 C~41k3 2015 01 18.317838 07 06 05.907 +33 06 48.46 23.0G 52975 F51 C~41k3 2015 01 18.331206 07 06 05.769 +33 06 48.58 22.6G 52975 F51 C~41k3 2015 01 20.323648 07 05 47.899 +33 07 08.43 22.5G 52975 F51 C~41k3 2015 01 20.335582 07 05 47.808 +33 07 08.46 22.9G 52975 F51 C~41k3 2015 01 20.347482 07 05 47.668 +33 07 08.53 23.1G 52975 F51 C~41k3 2015 01 20.359426 07 05 47.580 +33 07 08.67 22.5G 52975 F51 C~41k3 2015 01 22.287731 07 05 30.504 +33 07 25.60 23.2G 52975 F51 C~41k3 2015 01 22.299639 07 05 30.383 +33 07 25.74 22.6G 52975 F51 C~41k3 2015 01 22.311514 07 05 30.285 +33 07 25.75 23.0G 52975 F51 C~41k3 2015 01 22.323414 07 05 30.163 +33 07 25.80 22.9G 52975 F51 C~41k3 2015 12 04.649266 07 24 38.664 +32 49 22.69 22.4G 52975 F51 C~41k3 2016 12 25.523587 07 33 28.024 +32 54 43.57 22.8G 52975 F51 C~41k3 2016 12 25.533897 07 33 27.920 +32 54 43.80 22.6G 52975 F51 C~41k3 2017 01 28.436986 07 28 29.761 +33 05 45.55 22.6G 52975 F51 C~41k3 2017 10 03.631841 07 48 22.695 +32 05 51.65 22.8G 52975 F51 C~41k3 2017 10 29.548569 07 49 12.666 +32 15 37.74 23.0G 52975 F51 C~41k3 2018 01 15.335808 07 41 45.246 +32 54 58.73 22.8G 52975 F51 C~41k3 2018 01 15.348314 07 41 45.155 +32 54 59.05 23.2G 52975 F51 C~41k3 2018 01 15.360803 07 41 45.017 +32 54 59.31 23.0G 52975 F51 C~41k3 2018 01 15.373296 07 41 44.906 +32 54 59.50 22.5G 52975 F51 C~41k3 2018 12 17.575809 07 56 33.895 +32 29 55.90 23.5G 52975 F51 C~41k3 2018 12 17.588106 07 56 33.796 +32 29 56.26 23.1G 52975 F51 C~41k3 2018 12 17.600446 07 56 33.720 +32 29 56.83 23.7G 52975 F51 C~41k3 2018 12 17.612723 07 56 33.614 +32 29 57.20 22.9G 52975 F51 C~41k3 2019 01 02.527066 07 54 30.290 +32 38 19.48 23.0G 52975 F51 C~41k3 2019 01 02.538102 07 54 30.174 +32 38 19.51 22.8G 52975 F51 C~41k3 2019 01 02.549143 07 54 30.120 +32 38 19.92 23.0G 52975 F51 C~41k3 2019 01 02.560125 07 54 30.010 +32 38 20.16 23.1G 52975 F51 C~41k3 2019 01 09.363064 07 53 32.612 +32 41 28.88 22.2G 52975 F51 C~41k3 2019 01 09.374956 07 53 32.512 +32 41 28.82 23.0G 52975 F51 C~41k3 2019 01 09.386904 07 53 32.420 +32 41 29.01 23.2G 52975 F51 C~41k3 2019 01 09.398878 07 53 32.298 +32 41 29.55 23.3G 52975 F51 C~41k3 2019 12 30.570518 08 05 22.535 +32 22 15.21 23.3G 52975 F51 C~41k3 2020 01 19.371308 08 02 38.909 +32 31 35.49 22.6G 52975 F51 C~41k3 2020 01 19.383619 08 02 38.807 +32 31 35.75 23.0G 52975 F51 C~41k3 2020 01 19.395923 08 02 38.705 +32 31 35.84 24.0G 52975 F51 C~41k3 2020 01 19.408403 08 02 38.583 +32 31 36.18 23.2G 52975 F51 C~41k3 2020 01 21.368860 08 02 21.926 +32 32 21.80 23.2G 52975 F51 C~41k3 2020 01 21.382993 08 02 21.812 +32 32 22.03 23.3G 52975 F51 C~41k3 2020 01 21.397153 08 02 21.687 +32 32 22.27 23.1G 52975 F51 C~41k3 2020 01 21.411305 08 02 21.559 +32 32 22.86 23.2G 52975 F51 C~41k3 2020 01 22.386801 08 02 13.278 +32 32 44.79 23.1G 52975 F51 C~41k3 2020 01 23.545315 08 02 03.432 +32 33 09.77 23.4G 52975 F51 C~41k3
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 -0.08 0.00 -0.05
2 0.0001 0.00 -0.17 0.00 -0.38
3 0.0001 0.00 -0.20 0.00 -0.79
4 0.0162 0.00 -0.15 0.00 0.23
5 0.0163 0.00 0.40 0.00 0.27
6 0.0164 0.00 -0.02 0.00 -0.05
7 0.0437 0.00 -0.42 0.00 0.02
8 0.0438 0.00 -0.69 0.00 -0.21
9 0.0438 0.00 -0.51 0.00 -0.39
10 1.0101 0.00 -0.03 0.00 -0.50
11 1.0102 0.00 0.71 0.00 0.35
12 1.0103 0.00 0.91 0.00 0.02
13 1.0128 0.00 -0.02 0.00 0.55
14 1.0129 0.00 1.43 0.00 0.35
15 1.0130 0.00 0.34 0.00 0.33
16 1.1464 0.00 0.06 0.00 0.06
17 1.1464 0.00 -0.30 0.00 0.72
18 1.2231 0.00 0.05 0.00 0.19
19 1.2235 0.00 0.04 0.00 0.01
20 1.2260 0.00 0.06 0.00 0.04
21 2.1297 0.00 -0.14 0.00 -0.26
22 2.1298 0.00 -0.12 0.00 -0.21
23 2.1324 0.00 -0.06 0.00 -0.22
24 4.0492 0.00 -0.55 0.00 -0.05
25 4.0492 0.00 -0.60 0.00 0.04
26 4.0494 0.00 -0.64 0.00 0.09
27 9.9554 0.00 0.06 0.00 0.22
28 9.9555 0.00 0.07 0.00 0.15
29 9.9555 0.00 0.09 0.00 -0.18
30 11.2387 0.00 -0.24 0.00 -0.11
31 11.2387 0.00 -0.18 0.00 -0.24
32 14.9245 0.00 0.01 0.00 0.00
33 15.0257 0.00 -0.17 0.00 -0.35
34 15.1270 0.00 0.00 0.00 -0.16
35 15.1295 0.00 0.08 0.00 0.16
36 15.2059 0.00 0.06 0.00 -0.18
37 15.2059 0.00 -0.39 0.00 0.22
38 15.2059 0.00 -0.07 0.00 -0.04
39 16.2057 0.00 -0.13 0.00 -0.03
40 16.2679 0.00 -0.06 0.00 -0.20
41 16.2680 0.00 0.16 0.00 -0.12
42 16.2680 0.00 0.12 0.00 -0.03
43 16.2680 0.00 -0.11 0.00 -0.06
44 16.2735 0.00 0.04 0.00 0.09
45 16.2735 0.00 0.30 0.00 0.00
46 16.2735 0.00 -0.18 0.00 -0.04
47 16.2736 0.00 0.12 0.00 -0.02
48 16.2789 0.00 0.32 0.00 0.04
49 16.2789 0.00 0.10 0.00 0.07
50 16.2789 0.00 0.23 0.00 -0.02
51 16.2790 0.00 -0.00 0.00 -0.08
52 17.1450 0.00 -0.04 0.00 -0.03
53 18.2042 0.00 0.11 0.00 0.05
54 18.2042 0.00 -0.12 0.00 0.00
55 18.2971 0.00 0.19 0.00 -0.05
56 18.9766 0.00 -0.25 0.00 0.32
57 19.0475 0.00 0.03 0.00 -0.02
58 19.2605 0.00 0.01 0.00 -0.01
59 19.2605 0.00 0.32 0.00 0.04
60 19.2606 0.00 -0.07 0.00 0.04
61 19.2606 0.00 -0.06 0.00 -0.04
62 20.1811 0.00 0.04 0.00 0.00
63 20.1811 0.00 -0.11 0.00 -0.05
64 20.1812 0.00 0.08 0.00 0.12
65 20.1812 0.00 -0.18 0.00 0.08
66 20.2248 0.00 0.04 0.00 0.20
67 20.2248 0.00 -0.30 0.00 -0.09
68 20.2248 0.00 0.29 0.00 0.00
69 20.2248 0.00 0.03 0.00 -0.07
70 20.2435 0.00 0.02 0.00 0.35
71 20.2435 0.00 0.07 0.00 -0.03
72 20.2435 0.00 0.24 0.00 -0.15
73 20.2436 0.00 -0.02 0.00 0.07
74 21.2160 0.00 -0.21 0.00 -0.24
75 21.2702 0.00 0.04 0.00 0.19
76 21.2702 0.00 0.11 0.00 0.15
77 21.2703 0.00 0.17 0.00 -0.05
78 21.2703 0.00 -0.04 0.00 -0.01
79 21.2757 0.00 -0.09 0.00 0.02
80 21.2757 0.00 0.03 0.00 -0.07
81 21.2757 0.00 -0.01 0.00 -0.16
82 21.2758 0.00 -0.09 0.00 0.11
83 21.2784 0.00 -0.12 0.00 0.14
84 21.2816 0.00 -0.12 0.00 -0.18
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.
52975 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 26.440 26.440 26.439 ecceobj 0.384 0.384 0.384 incobj 12.613 12.613 12.613 qmin 16.231 15.562 16.231 qmax 36.732 36.744 36.720 amean 26.310 25.907 26.332 amin 25.981 25.356 26.132 amax 26.725 26.735 26.716 emean 0.373 0.378 0.374 emin 0.366 0.358 0.366 emax 0.384 0.391 0.384 imean 11.813 10.741 11.821 imin 11.765 9.569 11.779 imax 11.867 11.850 11.878 excite_mean 0.426 0.422 0.426 fracstop 0.002 0.012 0.001 cjmean 2.838 2.846 2.837 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 305.2 217.1 305.0 kozaiamp 3.6 179.2 3.1