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: 17FG226 # Created Wed May 8 01:18:09 2024 # Orbit generated from Bernstein formalism # Fitting 40 observations of 40 # Arc: 81.78d # First observation: 2017/01/28 # Last observation: 2017/04/20 Preliminary a, adot, b, bdot, g, gdot: -0.000026 0.040066 0.000036 0.003021 0.028807 0.000000 # Chi-squared of fit: 17.04 DOF: 74 RMS: 0.12 # Min/Max residuals: -0.28 0.26 # Exact a, adot, b, bdot, g, gdot: 1.710384E-05 3.009023E-02 1.262329E-06 3.448840E-03 2.722875E-02 1.667826E-03 # Covariance matrix: 1.7205E-13 -4.3037E-12 -1.3544E-14 2.2463E-13 -1.7104E-13 9.7599E-11 -4.3037E-12 2.8917E-09 1.0403E-11 -1.3043E-10 4.0670E-10 -2.1066E-08 -1.3544E-14 1.0403E-11 1.4413E-13 -1.2053E-12 1.4633E-12 -7.6769E-11 2.2463E-13 -1.3043E-10 -1.2053E-12 1.3680E-11 -1.8049E-11 1.0268E-09 -1.7104E-13 4.0670E-10 1.4633E-12 -1.8049E-11 5.9163E-11 -2.5813E-09 9.7599E-11 -2.1066E-08 -7.6769E-11 1.0268E-09 -2.5813E-09 2.3769E-07 # lat0 lon0 xBary yBary zBary JD0 -9.658376 153.620828 0.422611 -0.149313 -0.878390 2457782.018431 # Heliocentric elements and errors Epoch: 2457780.5000 = 2017/01/27 Mean Anomaly: 10.30028 +/- 3.775 Argument of Peri: 288.45266 +/- 5.663 Long of Asc Node: 208.62723 +/- 0.056 Inclination: 11.37399 +/- 0.008 Eccentricity: 0.19023757 +/- 0.0033 Semi-Major Axis: 46.17773236 +/- 0.0939 Time of Perihelion: 2454501.1028 +/- 1201.7 Perihelion: 37.39299271 +/- 0.1717 Aphelion: 54.96247201 +/- 0.1902 Period (y) 313.8030 +/- 0.96 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.04941494 +/- 0.0092 Ecliptic Y 16.85616756 +/- 0.0045 Ecliptic Z -6.16159406 +/- 0.0017 Ecliptic XDOT -0.00154164 +/- 0.0000 Ecliptic YDOT -0.00261792 +/- 0.0000 Ecliptic ZDOT 0.00031367 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 37.60797062 +/- 0.0083 Geocenter to KBO 36.72588106 +/- 0.0104 # Hcoef: 7.95
The following table shows the complete astrometric record for 17FG226. 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 (17FG226) followed by the observatory code and reference code for the source of the astrometry.
2017 01 28.51763 10 08 12.00 +01 09 47.9 23.5z 17FG226 T09 C~7xUG 2017 01 28.53098 10 08 11.93 +01 09 48.1 23.8z 17FG226 T09 C~7xUG 2017 01 28.54440 10 08 11.86 +01 09 48.2 23.4z 17FG226 T09 C~7xUG 2017 01 28.55779 10 08 11.81 +01 09 48.7 23.5z 17FG226 T09 C~7xUG 2017 01 28.58466 10 08 11.67 +01 09 49.3 23.2z 17FG226 T09 C~7xUG 2017 02 02.50623 10 07 48.68 +01 11 37.2 23.7r 17FG226 T09 C~7gvB 2017 02 02.51587 10 07 48.62 +01 11 37.5 23.7r 17FG226 T09 C~7gvB 2017 02 02.52479 10 07 48.58 +01 11 37.5 23.8r 17FG226 T09 C~7gvB 2017 02 02.52702 10 07 48.58 +01 11 37.7 23.9r 17FG226 T09 C~7gvB 2017 02 02.59348 10 07 48.26 +01 11 39.4 23.3i 17FG226 T09 C~7gvB 2017 02 21.32753 10 06 15.75 +01 20 04.5 23.2z 17FG226 T09 C~7gvB 2017 02 21.35310 10 06 15.61 +01 20 05.1 22.9z 17FG226 T09 C~7gvB 2017 02 21.37870 10 06 15.49 +01 20 06.0 23.1z 17FG226 T09 C~7gvB 2017 02 21.40442 10 06 15.35 +01 20 06.6 23.0z 17FG226 T09 C~7gvB 2017 02 21.42640 10 06 15.24 +01 20 07.1 22.9z 17FG226 T09 C~7gvB 2017 02 23.46966 10 06 05.03 +01 21 09.5 24.0r 17FG226 T09 C~7gvB 2017 02 23.48331 10 06 04.96 +01 21 10.0 23.8r 17FG226 T09 C~7gvB 2017 02 23.51437 10 06 04.81 +01 21 10.8 23.8r 17FG226 T09 C~7gvB 2017 03 04.27055 10 05 21.75 +01 25 48.0 23.4z 17FG226 T09 C~7gvB 2017 03 04.29603 10 05 21.64 +01 25 48.8 23.1z 17FG226 T09 C~7gvB 2017 03 04.32155 10 05 21.52 +01 25 49.9 23.1z 17FG226 T09 C~7gvB 2017 03 04.34714 10 05 21.39 +01 25 50.7 23.2z 17FG226 T09 C~7gvB 2017 03 04.45958 10 05 20.85 +01 25 54.4 23.3i 17FG226 T09 C~7gvB 2017 03 04.48135 10 05 20.73 +01 25 54.9 23.5i 17FG226 T09 C~7gvB 2017 03 04.50300 10 05 20.63 +01 25 55.6 23.3i 17FG226 T09 C~7gvB 2017 03 22.28630 10 04 01.12 +01 35 43.6 24.4g 17FG226 T09 C~7lto 2017 03 22.30012 10 04 01.07 +01 35 44.1 24.6g 17FG226 T09 C~7lto 2017 03 22.31838 10 04 00.98 +01 35 44.8 25.1g 17FG226 T09 C~7lto 2017 03 22.33948 10 04 00.90 +01 35 45.4 24.7g 17FG226 T09 C~7lto 2017 03 22.35217 10 04 00.83 +01 35 45.8 24.7g 17FG226 T09 C~7lto 2017 03 22.35428 10 04 00.83 +01 35 46.1 24.6g 17FG226 T09 C~7lto 2017 03 22.39453 10 04 00.66 +01 35 47.5 24.0z 17FG226 T09 C~7gvB 2017 03 22.42021 10 04 00.57 +01 35 48.3 23.8z 17FG226 T09 C~7gvB 2017 03 22.44588 10 04 00.46 +01 35 49.0 23.6z 17FG226 T09 C~7gvB 2017 03 22.49332 10 04 00.26 +01 35 50.7 23.9z 17FG226 T09 C~7gvB 2017 04 20.26464 10 02 33.93 +01 50 25.2 23.3y 17FG226 T09 C~7gvB 2017 04 20.26847 10 02 33.90 +01 50 25.2 22.6y 17FG226 T09 C~7gvB 2017 04 20.27229 10 02 33.90 +01 50 25.5 23.1y 17FG226 T09 C~7gvB 2017 04 20.29534 10 02 33.86 +01 50 25.9 23.0y 17FG226 T09 C~7gvB 2017 04 20.29917 10 02 33.84 +01 50 26.0 23.3y 17FG226 T09 C~7gvB
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 0.15
2 0.0000 -1.05 -0.00 -0.19 0.04
3 0.0001 -2.07 -0.04 -0.47 -0.16
4 0.0001 -2.95 0.05 -0.27 0.11
5 0.0002 -5.12 -0.16 -0.46 0.07
6 0.0137 -365.72 0.12 -22.53 0.02
7 0.0137 -366.66 -0.10 -22.57 0.02
8 0.0137 -367.22 0.02 -22.78 -0.15
9 0.0137 -367.29 0.12 -22.59 0.05
10 0.0139 -372.38 0.09 -22.71 0.21
11 0.0652 -1848.66 -0.02 -45.11 0.16
12 0.0653 -1850.84 -0.10 -45.30 -0.05
13 0.0653 -1852.84 -0.00 -45.10 0.12
14 0.0654 -1855.02 -0.07 -45.29 -0.09
15 0.0655 -1856.74 0.02 -45.41 -0.23
16 0.0711 -2022.04 -0.02 -41.65 -0.06
17 0.0711 -2023.20 -0.06 -41.55 0.02
18 0.0712 -2025.59 0.10 -41.61 -0.09
19 0.0951 -2727.78 -0.25 -12.59 -0.28
20 0.0952 -2729.61 -0.04 -12.43 -0.22
21 0.0953 -2731.68 -0.06 -12.05 0.06
22 0.0954 -2733.79 -0.11 -11.99 0.00
23 0.0957 -2742.67 0.04 -11.42 0.12
24 0.0957 -2744.53 -0.08 -11.59 -0.15
25 0.0958 -2746.18 0.01 -11.47 -0.12
26 0.1445 -4070.02 0.18 113.45 -0.08
27 0.1445 -4070.90 0.26 113.66 -0.00
28 0.1446 -4072.41 0.02 113.83 0.01
29 0.1446 -4073.74 0.16 113.96 -0.04
30 0.1447 -4074.87 -0.08 113.96 -0.15
31 0.1447 -4074.97 -0.04 114.24 0.11
32 0.1448 -4077.85 -0.12 114.64 0.16
33 0.1448 -4079.40 0.13 114.91 0.20
34 0.1449 -4081.19 0.12 114.98 0.04
35 0.1450 -4084.60 -0.01 115.50 0.13
36 0.2238 -5606.32 0.16 472.16 0.13
37 0.2238 -5606.74 -0.13 472.00 -0.08
38 0.2238 -5606.84 -0.09 472.28 0.14
39 0.2239 -5607.55 0.04 472.44 -0.03
40 0.2239 -5607.86 -0.14 472.43 -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.
17FG226 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 45.988 46.365 45.662 ecceobj 0.187 0.204 0.178 incobj 11.393 11.393 11.405 qmin 36.734 36.312 36.904 qmax 55.581 56.843 54.740 amean 45.965 46.338 45.645 amin 45.559 45.944 45.255 amax 46.444 46.839 46.093 emean 0.183 0.201 0.175 emin 0.170 0.188 0.162 emax 0.198 0.215 0.189 imean 12.329 12.392 12.332 imin 11.706 11.749 11.698 imax 12.965 12.971 12.943 excite_mean 0.281 0.294 0.276 fracstop 1.000 1.000 1.000 cjmean 3.028 3.023 3.028 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 176.2 181.0 176.3 kozaiamp 180.0 180.0 180.0