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: 20QH83 # Created Fri Apr 26 01:18:41 2024 # Orbit generated from Bernstein formalism # Fitting 31 observations of 32 # Arc: 2.12y # First observation: 2020/08/16 # Last observation: 2022/09/30 Preliminary a, adot, b, bdot, g, gdot: 0.000064 0.029926 -0.000019 0.012276 0.029540 0.000000 # Chi-squared of fit: 9.91 DOF: 56 RMS: 0.10 # Min/Max residuals: -0.32 0.32 # Exact a, adot, b, bdot, g, gdot: 1.558208E-05 2.981485E-02 6.440580E-06 1.218775E-02 2.950515E-02 -7.697361E-03 # Covariance matrix: 1.1948E-13 -1.8272E-13 1.2435E-14 -7.3921E-14 1.5181E-14 -2.6816E-12 -1.8272E-13 1.5327E-12 -1.4442E-13 8.3780E-13 1.8486E-13 3.0412E-11 1.2435E-14 -1.4442E-13 1.1924E-13 -1.4013E-13 -1.6399E-14 -2.9843E-12 -7.3921E-14 8.3780E-13 -1.4013E-13 5.3633E-13 8.0760E-14 1.7363E-11 1.5181E-14 1.8486E-13 -1.6399E-14 8.0760E-14 2.7118E-13 2.9457E-12 -2.6816E-12 3.0412E-11 -2.9843E-12 1.7363E-11 2.9457E-12 6.3021E-10 # lat0 lon0 xBary yBary zBary JD0 -3.651808 -47.681713 -0.196997 -0.062847 -0.982580 2459077.711691 # Heliocentric elements and errors Epoch: 2459070.5000 = 2020/08/09 Mean Anomaly: 310.70898 +/- 0.028 Argument of Peri: 66.57924 +/- 0.061 Long of Asc Node: 321.27130 +/- 0.000 Inclination: 22.45083 +/- 0.001 Eccentricity: 0.25338354 +/- 0.0008 Semi-Major Axis: 39.57821707 +/- 0.0146 Time of Perihelion: 2471522.7557 +/- 1.4 Perihelion: 29.54974850 +/- 0.0326 Aphelion: 49.60668564 +/- 0.0358 Period (y) 248.9961 +/- 0.14 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 23.58625531 +/- 0.0004 Ecliptic Y -25.61145474 +/- 0.0004 Ecliptic Z -2.15842726 +/- 0.0000 Ecliptic XDOT 0.00162196 +/- 0.0000 Ecliptic YDOT 0.00234092 +/- 0.0000 Ecliptic ZDOT 0.00117390 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.88433548 +/- 0.0004 Geocenter to KBO 33.89238338 +/- 0.0006 # Hcoef: 7.57
The following table shows the complete astrometric record for 20QH83. 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 (20QH83) followed by the observatory code and reference code for the source of the astrometry.
2020 08 16.21089 21 03 29.78 -20 36 26.7 23.0R 20QH83 G37 C~4qof 2020 08 16.23677 21 03 29.62 -20 36 27.2 22.6R 20QH83 G37 C~4qof 2020 08 16.27702 21 03 29.38 -20 36 27.8 22.0R 20QH83 G37 C~4qof 2020 08 16.29120 21 03 29.29 -20 36 28.0 22.3R 20QH83 G37 C~4qof 2020 08 16.31867 21 03 29.13 -20 36 28.5 22.6R 20QH83 G37 C~4qof 2020 09 20.11116 21 00 30.82 -20 42 48.1 22.2R 20QH83 G37 C~4qof 2020 09 20.14420 21 00 30.69 -20 42 48.2 22.7R 20QH83 G37 C~4qof 2020 09 20.16523 21 00 30.60 -20 42 48.3 23.3R 20QH83 G37 C~4qof 2020 09 20.17927 21 00 30.54 -20 42 48.3 22.6R 20QH83 G37 C~4qof 2020 09 20.19324 21 00 30.49 -20 42 48.4 22.9R 20QH83 G37 C~4qof 2020 09 24.15293 21 00 15.62 -20 43 01.3 20QH83 G37 C~4qof 2020 09 24.16003 21 00 15.58 -20 43 01.8 20QH83 G37 C~4qof 2020 09 24.16672 21 00 15.56 -20 43 01.9 20QH83 G37 C~4qof 2020 09 24.19183 21 00 15.46 -20 43 02.2 20QH83 G37 C~4qof 2021 07 08.38678 21 13 24.49 -19 13 44.2 22.8R 20QH83 G37 C~4v6j 2021 07 08.42792 21 13 24.29 -19 13 45.1 22.7R 20QH83 G37 C~4v6j 2021 07 08.43503 21 13 24.22 -19 13 44.9 22.7R 20QH83 G37 C~4v6j 2021 07 08.44361 21 13 24.21 -19 13 45.2 23.0R 20QH83 G37 C~4v6j 2021 07 08.45071 21 13 24.18 -19 13 45.4 22.8R 20QH83 G37 C~4v6j 2021 09 13.14456 21 07 09.64 -19 32 19.9 22.6R 20QH83 G37 C~52gG 2021 09 13.18734 21 07 09.44 -19 32 20.3 22.5R 20QH83 G37 C~52gG 2022 09 25.10290 21 12 27.63 -18 22 24.7 20QH83 G37 C~5tbg 2022 09 25.11669 21 12 27.58 -18 22 25.0 20QH83 G37 C~5tbg 2022 09 25.13022 21 12 27.52 -18 22 25.0 20QH83 G37 C~5tbg 2022 09 25.14403 21 12 27.47 -18 22 25.1 20QH83 G37 C~5tbg 2022 09 25.17490 21 12 27.35 -18 22 25.3 20QH83 G37 C~5tbg 2022 09 30.10951 21 12 09.72 -18 22 51.3 20QH83 G37 C~5tbg 2022 09 30.11546 21 12 09.71 -18 22 51.5 20QH83 G37 C~5tbg 2022 09 30.12153 21 12 09.68 -18 22 51.2 20QH83 G37 C~5tbg 2022 09 30.12748 21 12 09.67 -18 22 51.3 20QH83 G37 C~5tbg 2022 09 30.13345 21 12 09.65 -18 22 51.3 20QH83 G37 C~5tbg 2022 09 30.13939 21 12 09.62 -18 22 51.3 20QH83 G37 C~5tbg
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 0.02
2 0.0001 -2.30 0.00 0.16 -0.04
3 0.0002 -5.70 0.05 0.55 0.01
4 0.0002 -6.96 -0.01 0.72 0.06
5 0.0003 -9.26 0.05 0.89 -0.02
6 0.0956 -2516.81 -0.03 347.43 -0.04
7 0.0956 -2518.59 0.03 347.85 -0.01
8 0.0957 -2519.83 -0.04 348.11 0.00
9 0.0957 -2520.64 -0.07 348.34 0.07
10 0.0958 -2521.34 0.00 348.45 0.01
11 0.1066 -2725.20 ( 0.35) 394.81 ( 0.49)
12 0.1066 -2725.88 0.03 394.48 0.08
13 0.1067 -2726.17 0.07 394.47 -0.02
14 0.1067 -2727.61 -0.11 394.57 -0.21
15 0.8930 9480.27 -0.06 2286.58 0.08
16 0.8931 9477.29 0.04 2286.57 -0.13
17 0.8932 9476.40 -0.31 2287.06 0.32
18 0.8932 9476.18 0.10 2286.82 0.03
19 0.8932 9475.71 0.17 2286.76 -0.07
20 1.0758 4077.15 -0.03 2789.01 -0.06
21 1.0759 4074.33 0.01 2789.45 -0.06
22 2.1078 9633.64 0.05 5471.22 0.22
23 2.1079 9632.87 0.04 5471.14 -0.00
24 2.1079 9632.05 -0.03 5471.40 0.12
25 2.1080 9631.34 0.02 5471.51 0.09
26 2.1080 9629.64 0.02 5471.83 0.09
27 2.1216 9381.77 -0.11 5521.84 -0.11
28 2.1216 9381.58 -0.02 5521.69 -0.32
29 2.1216 9381.26 -0.05 5522.10 0.03
30 2.1216 9381.09 0.07 5522.05 -0.08
31 2.1216 9380.82 0.08 5522.13 -0.06
32 2.1216 9380.41 -0.04 5522.26 0.00
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.
20QH83 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.239 39.257 39.220 ecceobj 0.254 0.256 0.253 incobj 22.503 22.502 22.504 qmin 28.386 28.099 28.925 qmax 51.442 51.633 50.711 amean 39.455 39.456 39.455 amin 38.888 38.879 38.909 amax 40.122 40.114 40.092 emean 0.255 0.263 0.249 emin 0.235 0.231 0.233 emax 0.283 0.291 0.268 imean 23.526 23.332 23.809 imin 22.585 22.539 23.203 imax 24.122 24.350 24.185 excite_mean 0.474 0.476 0.474 fracstop 1.000 1.000 1.000 cjmean 2.792 2.790 2.791 libcent 0 178.9 179.7 179.4 libamp 0 149.0 151.2 135.9 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 173.4 186.6 189.0 kozaiamp 180.0 180.0 180.0