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: 13SG102
# Created Mon Apr 28 01:09:42 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 79 observations of 79
# Arc: 8.98y
# First observation: 2013/09/05
# Last observation: 2022/08/27
# Chi-squared of fit: 31.79 DOF: 152 RMS: 0.11
# Min/Max residuals: -0.32 0.25
# Exact a, adot, b, bdot, g, gdot:
1.529849E-05 2.281626E-02 -8.382565E-07 -2.677163E-03 2.387614E-02 -9.822887E-05
# Covariance matrix:
1.3060E-13 -5.3506E-14 -6.0671E-15 4.0541E-15 -3.5639E-15 -1.8853E-13
-5.3506E-14 2.9006E-14 4.0944E-15 -2.7269E-15 3.1374E-15 1.2676E-13
-6.0671E-15 4.0944E-15 8.1158E-14 -2.0270E-14 1.7674E-15 2.2977E-14
4.0541E-15 -2.7269E-15 -2.0270E-14 6.6634E-15 -5.3096E-16 -1.5257E-14
-3.5639E-15 3.1374E-15 1.7674E-15 -5.3096E-16 5.3682E-14 2.1263E-14
-1.8853E-13 1.2676E-13 2.2977E-14 -1.5257E-14 2.1263E-14 7.0900E-13
# lat0 lon0 xBary yBary zBary JD0
4.485996 -12.411123 0.091072 0.078696 -1.002095 2456540.632498
# Heliocentric elements and errors
Epoch: 2456540.5000 = 2013/09/05
Mean Anomaly: 295.20682 +/- 0.223
Argument of Peri: 212.36494 +/- 0.229
Long of Asc Node: 200.59481 +/- 0.001
Inclination: 7.98078 +/- 0.000
Eccentricity: 0.00913660 +/- 0.0000
Semi-Major Axis: 43.04885774 +/- 0.0017
Time of Perihelion: 2475108.6089 +/- 64.0
Perihelion: 42.65553746 +/- 0.0022
Aphelion: 43.44217802 +/- 0.0022
Period (y) 282.4559 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 41.74073254 +/- 0.0004
Ecliptic Y -9.27596760 +/- 0.0001
Ecliptic Z 3.27584842 +/- 0.0000
Ecliptic XDOT 0.00056861 +/- 0.0000
Ecliptic YDOT 0.00255131 +/- 0.0000
Ecliptic ZDOT -0.00030679 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.88430905 +/- 0.0004
Geocenter to KBO 41.88286218 +/- 0.0004
# Hcoef: 6.96
The following table shows the complete astrometric record for 13SG102. 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 (13SG102) followed by the observatory code and reference code for the source of the astrometry.
2013 09 05.13172 23 07 20.929 -00 46 18.28 22.9g 13SG102 W84 C~4yR0 2013 09 10.28438 23 06 58.555 -00 48 47.04 24.3g 13SG102 W84 C~4yR0 2013 09 30.11758 23 05 35.247 -00 58 31.80 23.2r 13SG102 W84 C~4yR0 2013 09 30.11904 23 05 35.242 -00 58 31.89 22.8i 13SG102 W84 C~4yR0 2013 10 11.10096 23 04 54.061 -01 03 44.03 22.5z 13SG102 W84 C~4yR0 2013 10 12.08214 23 04 50.648 -01 04 10.82 22.9i 13SG102 W84 C~4yR0 2013 10 12.082998 23 04 50.63 -01 04 10.6 22.5z 13SG102 W84 C~352C 2013 10 12.08353 23 04 50.646 -01 04 10.91 23.0z 13SG102 W84 C~4yR0 2013 10 13.12418 23 04 47.08 -01 04 39.1 22.8i 13SG102 W84 C~3clF 2013 11 23.07182 23 03 24.826 -01 18 12.34 23.1r 13SG102 W84 C~4yR0 2015 11 06.02411 23 13 44.125 -00 30 21.37 23.2r 13SG102 W84 C~4yR0 2015 11 06.02549 23 13 44.137 -00 30 21.56 22.7i 13SG102 W84 C~4yR0 2015 11 06.02686 23 13 44.135 -00 30 21.37 24.1g 13SG102 W84 C~4yR0 2016 07 07.52831 23 25 35.76 +00 37 35.9 24.5g 13SG102 T09 C~8kvO 2016 07 07.53831 23 25 35.76 +00 37 36.1 24.4g 13SG102 T09 C~8kvO 2016 07 07.54831 23 25 35.75 +00 37 35.9 24.4g 13SG102 T09 C~8kvO 2016 07 07.55842 23 25 35.74 +00 37 35.8 24.5g 13SG102 T09 C~8kvO 2016 07 07.57206 23 25 35.71 +00 37 35.9 24.4g 13SG102 T09 C~8kvO 2016 07 07.59188 23 25 35.67 +00 37 35.6 24.8g 13SG102 T09 C~8kvO 2016 07 07.59925 23 25 35.67 +00 37 35.6 24.6g 13SG102 T09 C~8kvO 2016 07 07.61057 23 25 35.65 +00 37 35.8 24.6g 13SG102 T09 C~8kvO 2016 07 09.54220 23 25 32.97 +00 37 26.0 22.7y 13SG102 T09 C~8kvO 2016 07 09.57065 23 25 32.91 +00 37 25.9 22.8y 13SG102 T09 C~8kvO 2016 07 09.58522 23 25 32.89 +00 37 25.9 22.7y 13SG102 T09 C~8kvO 2016 07 12.53621 23 25 28.23 +00 37 07.0 22.9z 13SG102 T09 C~8kvO 2016 07 12.55050 23 25 28.20 +00 37 07.0 22.8z 13SG102 T09 C~8kvO 2016 07 12.56482 23 25 28.15 +00 37 06.9 22.9z 13SG102 T09 C~8kvO 2016 07 12.57915 23 25 28.14 +00 37 06.9 22.8z 13SG102 T09 C~8kvO 2016 07 12.59350 23 25 28.11 +00 37 06.7 22.8z 13SG102 T09 C~8kvO 2016 07 29.54398 23 24 49.09 +00 33 51.7 22.9z 13SG102 T09 C~8nZO 2016 07 29.55844 23 24 49.05 +00 33 51.2 23.1z 13SG102 T09 C~8nZO 2016 07 29.57290 23 24 49.00 +00 33 51.3 23.0z 13SG102 T09 C~8nZO 2016 07 29.58728 23 24 48.96 +00 33 50.8 23.0z 13SG102 T09 C~8nZO 2016 08 01.44255 23 24 40.54 +00 33 04.3 23.6z 13SG102 T09 C~7gpX 2016 08 01.46799 23 24 40.44 +00 33 03.6 23.6z 13SG102 T09 C~7gpX 2016 08 01.48420 23 24 40.39 +00 33 03.5 23.2z 13SG102 T09 C~7gpX 2016 08 01.51671 23 24 40.29 +00 33 03.0 23.4z 13SG102 T09 C~7gpX 2016 08 01.53842 23 24 40.23 +00 33 02.6 23.2z 13SG102 T09 C~7gpX 2016 08 01.56281 23 24 40.16 +00 33 02.3 23.5z 13SG102 T09 C~7gpX 2016 08 09.44578 23 24 14.40 +00 30 34.1 23.1y 13SG102 T09 C~7gpX 2016 08 09.45746 23 24 14.37 +00 30 33.8 22.8y 13SG102 T09 C~7gpX 2016 08 09.47657 23 24 14.29 +00 30 33.4 22.8y 13SG102 T09 C~7gpX 2016 08 09.50404 23 24 14.21 +00 30 32.9 23.0y 13SG102 T09 C~7gpX 2016 08 09.50679 23 24 14.18 +00 30 32.8 23.5y 13SG102 T09 C~7gpX 2016 08 09.52629 23 24 14.12 +00 30 32.3 23.4y 13SG102 T09 C~7gpX 2016 08 09.54843 23 24 14.04 +00 30 31.9 23.2y 13SG102 T09 C~7gpX 2016 08 14.26928 23 23 57.122 +00 28 50.95 22.7z 13SG102 W84 C~4yR0 2016 09 07.37087 23 22 18.90 +00 18 24.8 23.4r 13SG102 T09 C~7gpX 2016 09 07.39898 23 22 18.76 +00 18 24.1 23.4r 13SG102 T09 C~7gpX 2016 09 07.44284 23 22 18.58 +00 18 22.8 23.4r 13SG102 T09 C~7gpX 2016 09 07.47602 23 22 18.43 +00 18 21.9 23.2r 13SG102 T09 C~7gpX 2016 09 26.13353 23 20 58.322 +00 09 08.45 23.5r 13SG102 W84 C~4yR0 2016 09 26.13489 23 20 58.309 +00 09 08.44 22.8i 13SG102 W84 C~4yR0 2016 09 26.13627 23 20 58.303 +00 09 08.53 24.7g 13SG102 W84 C~4yR0 2016 09 30.12434 23 20 41.812 +00 07 09.23 22.4z 13SG102 W84 C~4yR0 2017 09 13.36941 23 26 57.09 +00 37 35.3 22.6y 13SG102 T09 C~7xNq 2017 09 13.38367 23 26 57.02 +00 37 34.8 22.7y 13SG102 T09 C~7xNq 2017 09 13.40105 23 26 56.96 +00 37 34.3 22.6y 13SG102 T09 C~7xNq 2017 09 13.41536 23 26 56.88 +00 37 33.8 22.5y 13SG102 T09 C~7xNq 2017 09 27.27630 23 25 57.45 +00 30 38.5 22.3z 13SG102 T09 C~7bIA 2017 09 27.30436 23 25 57.33 +00 30 37.7 22.6z 13SG102 T09 C~7bIA 2017 09 27.31840 23 25 57.27 +00 30 37.3 22.6z 13SG102 T09 C~7bIA 2017 09 27.33246 23 25 57.21 +00 30 36.9 22.6z 13SG102 T09 C~7bIA 2017 09 27.34659 23 25 57.15 +00 30 36.5 22.2z 13SG102 T09 C~7bIA 2017 10 11.187257 23 25 01.92 +00 23 48.6 22.9i 13SG102 W84 C~352C 2017 10 11.18778 23 25 01.935 +00 23 48.61 22.2i 13SG102 W84 C~4yR0 2017 11 08.06827 23 23 38.812 +00 12 16.96 24.3g 13SG102 W84 C~4yR0 2017 11 08.069120 23 23 38.82 +00 12 16.8 23.7r 13SG102 W84 C~352C 2017 11 08.06964 23 23 38.818 +00 12 16.71 23.6r 13SG102 W84 C~4yR0 2017 11 09.03923 23 23 36.852 +00 11 57.43 24.6g 13SG102 W84 C~4yR0 2017 11 09.04060 23 23 36.861 +00 11 57.68 23.7r 13SG102 W84 C~4yR0 2017 11 15.052847 23 23 26.31 +00 10 08.5 22.9i 13SG102 W84 C~352C 2017 11 15.05337 23 23 26.309 +00 10 08.50 22.8i 13SG102 W84 C~4yR0 2018 09 17.27443 23 31 44.684 +00 57 45.28 23.0r 13SG102 W84 C~4yR0 2018 09 17.27580 23 31 44.673 +00 57 45.34 23.5g 13SG102 W84 C~4yR0 2018 09 19.19888 23 31 36.344 +00 56 47.67 22.6z 13SG102 W84 C~4yR0 2022 08 27.385970 23 53 30.158 +02 35 19.85 23.4G 13SG102 G37 C~5nHc 2022 08 27.419490 23 53 30.029 +02 35 18.96 13SG102 G37 C~5nHc 2022 08 27.454860 23 53 29.885 +02 35 18.11 13SG102 G37 C~5nHc
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 0.04 0.00 -0.19
2 0.0141 0.00 -0.05 0.00 -0.25
3 0.0684 0.00 0.08 0.00 0.05
4 0.0684 0.00 0.09 0.00 0.01
5 0.0985 0.00 0.02 0.00 -0.03
6 0.1012 0.00 -0.03 0.00 0.00
7 0.1012 0.00 -0.26 0.00 0.25
8 0.1012 0.00 0.01 0.00 -0.05
9 0.1040 0.00 0.02 0.00 -0.03
10 0.2161 0.00 -0.03 0.00 0.02
11 2.1681 0.00 -0.03 0.00 0.04
12 2.1681 0.00 0.19 0.00 -0.12
13 2.1681 0.00 0.20 0.00 0.10
14 2.8375 0.00 -0.14 0.00 -0.18
15 2.8375 0.00 0.06 0.00 0.07
16 2.8376 0.00 0.12 0.00 -0.09
17 2.8376 0.00 0.18 0.00 -0.14
18 2.8376 0.00 0.02 0.00 0.02
19 2.8377 0.00 -0.17 0.00 -0.19
20 2.8377 0.00 -0.01 0.00 -0.16
21 2.8377 0.00 -0.07 0.00 0.09
22 2.8430 0.00 0.08 0.00 -0.03
23 2.8431 0.00 -0.16 0.00 0.03
24 2.8431 0.00 -0.12 0.00 0.11
25 2.8512 0.00 0.15 0.00 -0.06
26 2.8512 0.00 0.08 0.00 0.04
27 2.8513 0.00 -0.28 0.00 0.05
28 2.8513 0.00 -0.05 0.00 0.15
29 2.8514 0.00 -0.12 0.00 0.05
30 2.8978 0.00 0.12 0.00 0.12
31 2.8978 0.00 0.16 0.00 -0.16
32 2.8979 0.00 0.05 0.00 0.17
33 2.8979 0.00 0.09 0.00 -0.10
34 2.9057 0.00 0.24 0.00 0.12
35 2.9058 0.00 -0.08 0.00 -0.15
36 2.9058 0.00 -0.07 0.00 0.03
37 2.9059 0.00 -0.04 0.00 0.08
38 2.9060 0.00 0.08 0.00 0.05
39 2.9060 0.00 0.17 0.00 0.17
40 2.9276 0.00 -0.07 0.00 0.15
41 2.9277 0.00 0.11 0.00 0.09
42 2.9277 0.00 -0.08 0.00 0.08
43 2.9278 0.00 0.19 0.00 0.15
44 2.9278 0.00 -0.11 0.00 0.10
45 2.9278 0.00 0.03 0.00 0.00
46 2.9279 0.00 0.01 0.00 0.06
47 2.9408 0.00 0.20 0.00 0.02
48 3.0068 0.00 0.05 0.00 -0.17
49 3.0069 0.00 -0.19 0.00 -0.06
50 3.0070 0.00 0.00 0.00 -0.09
51 3.0071 0.00 -0.06 0.00 -0.04
52 3.0582 0.00 0.13 0.00 -0.01
53 3.0582 0.00 0.02 0.00 0.02
54 3.0582 0.00 0.02 0.00 0.15
55 3.0691 0.00 0.03 0.00 -0.00
56 4.0226 0.00 -0.05 0.00 0.18
57 4.0226 0.00 -0.16 0.00 0.10
58 4.0226 0.00 0.09 0.00 0.11
59 4.0227 0.00 -0.16 0.00 0.04
60 4.0606 0.00 0.00 0.00 -0.06
61 4.0607 0.00 -0.01 0.00 -0.01
62 4.0607 0.00 -0.01 0.00 0.01
63 4.0608 0.00 -0.01 0.00 0.03
64 4.0608 0.00 -0.01 0.00 0.06
65 4.0987 0.00 -0.01 0.00 -0.22
66 4.0987 0.00 0.24 0.00 -0.19
67 4.1750 0.00 -0.14 0.00 0.15
68 4.1751 0.00 0.00 0.00 0.01
69 4.1751 0.00 -0.01 0.00 -0.07
70 4.1777 0.00 -0.08 0.00 -0.24
71 4.1777 0.00 0.10 0.00 0.03
72 4.1942 0.00 0.07 0.00 -0.01
73 4.1942 0.00 0.06 0.00 -0.00
74 5.0326 0.00 -0.01 0.00 -0.00
75 5.0326 0.00 -0.08 0.00 0.10
76 5.0378 0.00 -0.32 0.00 -0.05
77 8.9754 0.00 0.03 0.00 -0.01
78 8.9755 0.00 0.08 0.00 -0.07
79 8.9756 0.00 0.00 0.00 -0.03
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.
13SG102 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.266 43.266 43.266 ecceobj 0.012 0.012 0.012 incobj 7.967 7.967 7.967 qmin 41.677 41.670 41.691 qmax 44.725 44.733 44.724 amean 43.136 43.136 43.136 amin 42.806 42.806 42.806 amax 43.465 43.465 43.466 emean 0.016 0.016 0.016 emin 0.001 0.001 0.001 emax 0.030 0.030 0.030 imean 8.827 8.827 8.827 imin 8.199 8.199 8.199 imax 9.506 9.506 9.506 excite_mean 0.154 0.154 0.154 fracstop 1.000 1.000 1.000 cjmean 3.063 3.063 3.063 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 180.7 180.6 180.8 kozaiamp 179.9 180.0 180.0