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: 17BG230 # Created Fri Nov 22 02:10:48 2024 # Orbit generated from Bernstein formalism # Fitting 57 observations of 57 # Arc: 4.05y # First observation: 2015/01/16 # Last observation: 2019/02/05 Preliminary a, adot, b, bdot, g, gdot: -0.000066 0.015319 -0.000021 0.006096 0.019857 0.000000 # Chi-squared of fit: 42.27 DOF: 108 RMS: 0.15 # Min/Max residuals: -0.47 0.40 # Exact a, adot, b, bdot, g, gdot: 1.217345E-05 1.524285E-02 5.313087E-06 6.067405E-03 1.983181E-02 -4.266391E-04 # Covariance matrix: 3.0412E-13 -2.1391E-13 3.4253E-14 -4.7874E-14 -6.8377E-14 -2.2758E-12 -2.1391E-13 2.4706E-13 -5.7165E-14 8.1062E-14 1.9884E-13 3.8408E-12 3.4253E-14 -5.7165E-14 2.4362E-13 -1.2646E-13 -5.3202E-14 -1.1361E-12 -4.7874E-14 8.1062E-14 -1.2646E-13 8.6153E-14 7.7743E-14 1.6070E-12 -6.8377E-14 1.9884E-13 -5.3202E-14 7.7743E-14 3.5259E-13 3.6590E-12 -2.2758E-12 3.8408E-12 -1.1361E-12 1.6070E-12 3.6590E-12 7.6185E-11 # lat0 lon0 xBary yBary zBary JD0 -10.380956 150.351674 0.557509 -0.145466 -0.794957 2457039.065492 # Heliocentric elements and errors Epoch: 2457030.5000 = 2015/01/08 Mean Anomaly: 199.86628 +/- 0.233 Argument of Peri: 137.82251 +/- 0.232 Long of Asc Node: 173.90848 +/- 0.001 Inclination: 23.74237 +/- 0.001 Eccentricity: 0.11197623 +/- 0.0001 Semi-Major Axis: 46.29280510 +/- 0.0040 Time of Perihelion: 2508204.4544 +/- 74.3 Perihelion: 41.10911137 +/- 0.0076 Aphelion: 51.47649884 +/- 0.0081 Period (y) 314.9767 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -43.53491746 +/- 0.0013 Ecliptic Y 25.41977809 +/- 0.0007 Ecliptic Z -9.08577527 +/- 0.0003 Ecliptic XDOT -0.00112566 +/- 0.0000 Ecliptic YDOT -0.00178816 +/- 0.0000 Ecliptic ZDOT 0.00083463 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 51.22504728 +/- 0.0012 Geocenter to KBO 50.42403073 +/- 0.0015 # Hcoef: 8.86
The following table shows the complete astrometric record for 17BG230. 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 (17BG230) followed by the observatory code and reference code for the source of the astrometry.
2015 01 16.564714 09 55 07.46 +01 37 02.9 17BG230 T09 C~81Bm 2015 01 16.651377 09 55 07.17 +01 37 04.2 17BG230 T09 C~81Bm 2015 01 21.583905 09 54 50.74 +01 38 16.9 17BG230 T09 C~81Bm 2015 01 21.609777 09 54 50.66 +01 38 17.4 17BG230 T09 C~81Bm 2016 03 04.429779 09 55 58.15 +01 55 35.3 17BG230 T09 C~81Bm 2016 03 04.444642 09 55 58.09 +01 55 35.7 17BG230 T09 C~81Bm 2016 03 04.459022 09 55 58.02 +01 55 36.2 17BG230 T09 C~81Bm 2017 01 02.52725 10 03 18.41 +01 37 19.6 25.2i 17BG230 T09 C~7ujA 2017 01 02.53736 10 03 18.39 +01 37 19.6 25.6i 17BG230 T09 C~7ujA 2017 01 02.54946 10 03 18.34 +01 37 19.7 26.1i 17BG230 T09 C~7ujA 2017 01 21.42049 10 02 22.94 +01 41 05.0 25.7z 17BG230 T09 C~7ujA 2017 01 21.48947 10 02 22.69 +01 41 06.2 25.5z 17BG230 T09 C~7ujA 2017 01 21.49330 10 02 22.68 +01 41 06.2 25.9z 17BG230 T09 C~7ujA 2017 01 21.51563 10 02 22.58 +01 41 06.5 26.1z 17BG230 T09 C~7ujA 2017 01 21.54162 10 02 22.50 +01 41 07.0 26.3z 17BG230 T09 C~7ujA 2017 01 21.58402 10 02 22.32 +01 41 07.7 25.4z 17BG230 T09 C~7ujA 2017 01 23.35198 10 02 16.35 +01 41 36.8 25.9r 17BG230 T09 C~7ujA 2017 01 23.36273 10 02 16.30 +01 41 36.9 25.9r 17BG230 T09 C~7ujA 2017 01 23.37416 10 02 16.29 +01 41 36.9 25.3r 17BG230 T09 C~7ujA 2017 01 23.39642 10 02 16.23 +01 41 37.4 25.7r 17BG230 T09 C~7ujA 2017 01 23.41024 10 02 16.14 +01 41 37.8 26.0r 17BG230 T09 C~7ujA 2017 01 23.44310 10 02 16.04 +01 41 38.1 26.0r 17BG230 T09 C~7ujA 2017 01 23.48534 10 02 15.90 +01 41 39.0 25.2i 17BG230 T09 C~7ujA 2017 01 23.50215 10 02 15.85 +01 41 39.3 24.9i 17BG230 T09 C~7ujA 2017 01 23.52068 10 02 15.78 +01 41 39.5 25.4i 17BG230 T09 C~7ujA 2017 01 23.54331 10 02 15.71 +01 41 40.1 25.1i 17BG230 T09 C~7ujA 2017 01 23.54715 10 02 15.68 +01 41 40.0 25.1i 17BG230 T09 C~7ujA 2017 01 23.56929 10 02 15.61 +01 41 40.3 24.7i 17BG230 T09 C~7ujA 2017 01 23.59193 10 02 15.53 +01 41 40.6 25.7i 17BG230 T09 C~7ujA 2017 02 02.42933 10 01 40.30 +01 44 44.3 26.1r 17BG230 T09 C~7ujA 2017 02 02.44070 10 01 40.24 +01 44 44.5 26.2r 17BG230 T09 C~7ujA 2017 02 02.44397 10 01 40.24 +01 44 44.6 26.4r 17BG230 T09 C~7ujA 2017 02 02.47020 10 01 40.14 +01 44 45.2 26.4r 17BG230 T09 C~7ujA 2017 02 02.47353 10 01 40.13 +01 44 45.3 26.4r 17BG230 T09 C~7ujA 2017 02 23.47280 10 00 19.94 +01 52 54.7 26.1r 17BG230 T09 C~7ujA 2017 02 23.48645 10 00 19.89 +01 52 55.2 26.1r 17BG230 T09 C~7ujA 2017 02 23.49694 10 00 19.84 +01 52 55.7 25.6r 17BG230 T09 C~7ujA 2017 02 23.50008 10 00 19.83 +01 52 55.5 25.7r 17BG230 T09 C~7ujA 2017 02 23.50391 10 00 19.81 +01 52 55.9 26.4r 17BG230 T09 C~7ujA 2017 02 25.41253 10 00 12.52 +01 53 44.9 25.2i 17BG230 T09 C~7ujA 2017 02 25.41636 10 00 12.52 +01 53 45.2 25.1i 17BG230 T09 C~7ujA 2017 02 25.42020 10 00 12.49 +01 53 45.6 25.1i 17BG230 T09 C~7ujA 2017 02 25.43849 10 00 12.45 +01 53 45.9 25.4i 17BG230 T09 C~7ujA 2017 03 06.49634 09 59 38.62 +01 57 46.7 26.2r 17BG230 T09 C~7ujA 2017 03 06.51016 09 59 38.59 +01 57 46.9 25.9r 17BG230 T09 C~7ujA 2017 03 06.51829 09 59 38.56 +01 57 47.2 26.3r 17BG230 T09 C~7ujA 2017 03 06.52393 09 59 38.54 +01 57 47.6 26.4r 17BG230 T09 C~7ujA 2017 03 06.53779 09 59 38.49 +01 57 47.6 26.4r 17BG230 T09 C~7ujA 2017 03 25.23822 09 58 36.22 +02 06 16.5 25.8r 17BG230 T09 C~7ujA 2017 03 25.24634 09 58 36.18 +02 06 17.1 26.4r 17BG230 T09 C~7ujA 2017 03 25.26562 09 58 36.12 +02 06 17.3 26.4r 17BG230 T09 C~7ujA 2017 03 25.27375 09 58 36.09 +02 06 17.8 25.6r 17BG230 T09 C~7ujA 2017 03 25.27935 09 58 36.09 +02 06 17.8 26.4r 17BG230 T09 C~7ujA 2017 03 25.29309 09 58 36.05 +02 06 18.3 25.9r 17BG230 T09 C~7ujA 2018 01 17.545345 10 06 23.03 +01 41 21.3 17BG230 T09 C~81Bm 2019 02 05.409268 10 09 05.44 +01 48 14.7 17BG230 T09 C~81Bm 2019 02 05.422693 10 09 05.38 +01 48 15.0 17BG230 T09 C~81Bm
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 -0.00 0.00 -0.10
2 0.0002 -4.53 -0.11 -0.28 -0.02
3 0.0137 -260.82 -0.06 -17.26 -0.09
4 0.0138 -262.12 0.05 -17.21 0.04
5 1.1304 328.31 0.25 1306.63 0.09
6 1.1304 327.33 0.19 1306.69 0.07
7 1.1304 326.17 -0.08 1306.80 0.09
8 1.9629 6902.94 0.08 2566.05 0.22
9 1.9630 6902.66 0.19 2565.95 0.17
10 1.9630 6901.92 -0.09 2565.78 0.08
11 2.0147 6043.75 0.40 2488.87 0.01
12 2.0149 6039.81 0.17 2488.70 0.03
13 2.0149 6039.67 0.23 2488.64 -0.01
14 2.0149 6038.16 -0.08 2488.41 -0.19
15 2.0150 6036.86 0.02 2488.46 -0.06
16 2.0151 6034.09 -0.47 2488.18 -0.22
17 2.0200 5939.95 -0.24 2484.42 -0.01
18 2.0200 5939.21 -0.39 2484.26 -0.15
19 2.0200 5939.07 0.09 2484.20 -0.18
20 2.0201 5938.05 0.29 2484.36 0.03
21 2.0201 5936.65 -0.36 2484.27 -0.03
22 2.0202 5935.14 -0.06 2484.03 -0.19
23 2.0203 5932.85 -0.02 2484.15 0.03
24 2.0204 5932.04 0.10 2484.17 0.09
25 2.0204 5930.99 0.07 2483.99 -0.04
26 2.0205 5929.80 0.12 2484.19 0.22
27 2.0205 5929.41 -0.06 2483.94 -0.02
28 2.0205 5928.32 0.07 2483.86 -0.05
29 2.0206 5927.09 0.09 2483.72 -0.13
30 2.0475 5367.49 0.12 2472.83 0.01
31 2.0476 5366.57 -0.11 2472.70 -0.11
32 2.0476 5366.54 0.05 2472.80 -0.02
33 2.0477 5364.92 0.02 2472.84 0.04
34 2.0477 5364.75 0.04 2472.88 0.08
35 2.1052 4066.63 0.07 2515.15 -0.18
36 2.1052 4065.75 0.07 2515.35 -0.03
37 2.1052 4064.88 -0.14 2515.56 0.14
38 2.1052 4064.80 -0.01 2515.32 -0.11
39 2.1052 4064.38 -0.19 2515.60 0.15
40 2.1105 3944.83 -0.21 2523.68 -0.23
41 2.1105 3944.73 -0.07 2523.96 0.03
42 2.1105 3944.17 -0.39 2524.18 0.24
43 2.1105 3943.50 0.11 2524.26 0.23
44 2.1353 3384.11 -0.32 2574.39 0.08
45 2.1354 3383.62 0.04 2574.43 0.03
46 2.1354 3383.09 0.01 2574.55 0.10
47 2.1354 3382.67 -0.07 2574.82 0.34
48 2.1354 3381.97 0.08 2574.56 -0.01
49 2.1866 2329.75 0.30 2728.60 -0.21
50 2.1867 2328.98 -0.05 2728.95 0.06
51 2.1867 2328.06 0.03 2728.83 -0.25
52 2.1867 2327.47 -0.14 2729.14 -0.01
53 2.1868 2327.47 0.15 2729.14 -0.06
54 2.1868 2326.73 0.12 2729.40 0.07
55 3.0034 9419.87 0.13 3755.20 -0.04
56 4.0543 11566.38 0.07 4991.99 0.00
57 4.0544 11565.43 -0.07 4991.96 -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.
17BG230 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 46.055 46.066 46.044 ecceobj 0.117 0.117 0.117 incobj 23.846 23.847 23.846 qmin 39.933 39.938 39.921 qmax 52.541 52.559 52.521 amean 46.092 46.103 46.081 amin 45.706 45.735 45.706 amax 46.505 46.509 46.495 emean 0.117 0.117 0.117 emin 0.105 0.106 0.105 emax 0.130 0.130 0.130 imean 23.341 23.342 23.341 imin 23.048 23.045 23.044 imax 23.648 23.641 23.655 excite_mean 0.413 0.413 0.413 fracstop 1.000 1.000 1.000 cjmean 2.909 2.910 2.909 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 193.8 194.2 193.7 kozaiamp 180.0 180.0 180.0