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 Wed May 8 01:18:04 2024 # Orbit generated from Bernstein formalism # Fitting 47 observations of 47 # Arc: 81.77d # First observation: 2017/01/02 # Last observation: 2017/03/25 Preliminary a, adot, b, bdot, g, gdot: -0.000006 0.015746 0.000002 0.006184 0.019974 0.000000 # Chi-squared of fit: 37.30 DOF: 88 RMS: 0.16 # Min/Max residuals: -0.48 0.38 # Exact a, adot, b, bdot, g, gdot: 1.213026E-05 1.521635E-02 4.026222E-06 6.148484E-03 1.979382E-02 2.295469E-04 # Covariance matrix: 3.4903E-13 -1.7103E-11 -7.7130E-14 -1.7713E-13 -2.2095E-12 1.2870E-10 -1.7103E-11 3.0949E-09 1.6699E-11 6.7868E-11 5.5432E-10 1.0063E-08 -7.7130E-14 1.6699E-11 2.0186E-13 -3.7595E-13 3.0518E-12 6.7946E-11 -1.7713E-13 6.7868E-11 -3.7595E-13 8.8863E-12 1.3055E-11 4.3961E-10 -2.2095E-12 5.5432E-10 3.0518E-12 1.3055E-11 1.0298E-10 2.6760E-09 1.2870E-10 1.0063E-08 6.7946E-11 4.3961E-10 2.6760E-09 2.5097E-07 # lat0 lon0 xBary yBary zBary JD0 -9.662739 152.295886 0.760696 -0.105245 -0.619257 2457756.028051 # Heliocentric elements and errors Epoch: 2457750.5000 = 2016/12/28 Mean Anomaly: 180.76535 +/- 14.637 Argument of Peri: 154.99811 +/- 14.655 Long of Asc Node: 173.96299 +/- 0.076 Inclination: 23.69441 +/- 0.068 Eccentricity: 0.10605980 +/- 0.0047 Semi-Major Axis: 46.24274380 +/- 0.1675 Time of Perihelion: 2514935.6543 +/- 4659.6 Perihelion: 41.33824775 +/- 0.2652 Aphelion: 51.14723985 +/- 0.2868 Period (y) 314.4659 +/- 1.71 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -44.30070950 +/- 0.0226 Ecliptic Y 24.11522941 +/- 0.0119 Ecliptic Z -8.47966568 +/- 0.0044 Ecliptic XDOT -0.00112995 +/- 0.0001 Ecliptic YDOT -0.00178922 +/- 0.0000 Ecliptic ZDOT 0.00083300 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 51.14686581 +/- 0.0204 Geocenter to KBO 50.52081103 +/- 0.0259 # 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.
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
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 0.01 0.00 0.18
2 0.0000 -0.28 0.11 -0.11 0.14
3 0.0001 -1.02 -0.17 -0.28 0.04
4 0.0517 -857.80 0.38 -82.03 0.01
5 0.0519 -861.73 0.15 -82.22 0.03
6 0.0519 -861.87 0.22 -82.28 -0.01
7 0.0520 -863.38 -0.09 -82.52 -0.19
8 0.0521 -864.68 0.01 -82.48 -0.06
9 0.0522 -867.45 -0.48 -82.77 -0.23
10 0.0570 -961.48 -0.24 -87.06 -0.01
11 0.0570 -962.21 -0.40 -87.24 -0.15
12 0.0571 -962.35 0.09 -87.29 -0.17
13 0.0571 -963.37 0.29 -87.14 0.04
14 0.0572 -964.77 -0.36 -87.24 -0.03
15 0.0573 -966.28 -0.06 -87.48 -0.19
16 0.0574 -968.56 -0.02 -87.38 0.03
17 0.0574 -969.37 0.10 -87.37 0.10
18 0.0575 -970.43 0.06 -87.55 -0.03
19 0.0575 -971.62 0.12 -87.36 0.22
20 0.0575 -972.00 -0.06 -87.61 -0.02
21 0.0576 -973.09 0.07 -87.70 -0.05
22 0.0577 -974.32 0.09 -87.84 -0.13
23 0.0846 -1533.41 0.16 -101.92 0.02
24 0.0846 -1534.32 -0.07 -102.05 -0.10
25 0.0846 -1534.36 0.09 -101.96 -0.01
26 0.0847 -1535.97 0.05 -101.92 0.05
27 0.0847 -1536.15 0.08 -101.88 0.09
28 0.1422 -2833.87 0.15 -67.04 -0.17
29 0.1423 -2834.75 0.14 -66.84 -0.02
30 0.1423 -2835.62 -0.07 -66.63 0.15
31 0.1423 -2835.69 0.06 -66.87 -0.10
32 0.1423 -2836.12 -0.12 -66.61 0.16
33 0.1475 -2955.68 -0.14 -59.20 -0.22
34 0.1475 -2955.79 -0.00 -58.92 0.04
35 0.1476 -2956.35 -0.32 -58.71 0.25
36 0.1476 -2957.02 0.17 -58.64 0.24
37 0.1724 -3516.62 -0.27 -11.70 0.08
38 0.1724 -3517.11 0.09 -11.67 0.03
39 0.1725 -3517.63 0.06 -11.55 0.11
40 0.1725 -3518.06 -0.02 -11.28 0.34
41 0.1725 -3518.76 0.13 -11.54 -0.00
42 0.2237 -4571.98 0.23 136.50 -0.22
43 0.2237 -4572.75 -0.12 136.85 0.05
44 0.2238 -4573.67 -0.03 136.72 -0.26
45 0.2238 -4574.26 -0.21 137.03 -0.02
46 0.2238 -4574.26 0.08 137.03 -0.08
47 0.2239 -4575.00 0.06 137.29 0.05
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 46.091 46.802 45.580 ecceobj 0.111 0.117 0.127 incobj 23.807 23.618 24.016 qmin 40.158 40.463 39.029 qmax 52.341 53.473 52.478 amean 46.121 46.820 45.610 amin 45.753 46.433 45.222 amax 46.537 47.238 46.021 emean 0.112 0.119 0.127 emin 0.101 0.107 0.115 emax 0.125 0.132 0.141 imean 23.268 23.049 23.486 imin 22.956 22.738 23.138 imax 23.562 23.322 23.809 excite_mean 0.411 0.409 0.418 fracstop 1.000 1.000 1.000 cjmean 2.912 2.921 2.900 libcent 0 -180.0 -180.0 87.2 libamp 0 -180.0 -180.0 55.6 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 192.0 192.7 187.1 kozaiamp 180.0 180.0 180.0