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: 20RP11 # Created Sun Dec 22 02:11:15 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 73 observations of 73 # Arc: 3.38y # First observation: 2020/08/22 # Last observation: 2024/01/09 # Chi-squared of fit: 93.10 DOF: 140 RMS: 0.20 # Min/Max residuals: -0.65 0.79 # Exact a, adot, b, bdot, g, gdot: 4.525946E-05 5.013221E-01 -2.396296E-05 -2.531448E-01 1.757726E-01 -8.892806E-02 # Covariance matrix: 4.4548E-14 -1.3773E-13 -6.9631E-15 7.5968E-14 1.4158E-14 -2.2516E-14 -1.3773E-13 2.0361E-12 1.1440E-13 -1.2168E-12 1.2381E-13 3.7487E-13 -6.9631E-15 1.1440E-13 3.2481E-14 -9.7299E-14 6.5975E-15 2.2031E-14 7.5968E-14 -1.2168E-12 -9.7299E-14 8.4921E-13 -6.6886E-14 -2.3447E-13 1.4158E-14 1.2381E-13 6.5975E-15 -6.6886E-14 4.4498E-14 2.2135E-14 -2.2516E-14 3.7487E-13 2.2031E-14 -2.3447E-13 2.2135E-14 7.2166E-14 # lat0 lon0 xBary yBary zBary JD0 -13.015799 10.446037 0.654101 -0.171386 -0.740935 2459084.011571 # Heliocentric elements and errors Epoch: 2459084.5000 = 2020/08/23 Mean Anomaly: 356.21064 +/- 0.000 Argument of Peri: 238.29567 +/- 0.000 Long of Asc Node: 164.27748 +/- 0.000 Inclination: 30.35329 +/- 0.000 Eccentricity: 0.73763106 +/- 0.0002 Semi-Major Axis: 22.74543309 +/- 0.0000 Time of Perihelion: 2459501.5642 +/- 0.1 Perihelion: 5.96769527 +/- 0.0046 Aphelion: 39.52317091 +/- 0.0046 Period (y) 108.4800 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 6.32324772 +/- 0.0000 Ecliptic Y 0.49318724 +/- 0.0000 Ecliptic Z -1.28141293 +/- 0.0000 Ecliptic XDOT -0.00360865 +/- 0.0000 Ecliptic YDOT 0.00727811 +/- 0.0000 Ecliptic ZDOT -0.00352996 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 6.47067674 +/- 0.0000 Geocenter to KBO 5.68924068 +/- 0.0000 # Hcoef: 13.54
The following table shows the complete astrometric record for 20RP11. 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 (20RP11) followed by the observatory code and reference code for the source of the astrometry.
2020 08 22.510770 00 58 51.934 -07 50 15.68 21.8G 20RP11 F51 C~4Apc 2020 08 22.523166 00 58 51.881 -07 50 19.43 21.8G 20RP11 F51 C~4Apc 2020 08 22.535652 00 58 51.790 -07 50 23.12 21.8G 20RP11 F51 C~4Apc 2020 08 22.538811 00 58 51.800 -07 50 23.95 21.8G 20RP11 F52 C~4Apc 2020 08 22.549785 00 58 51.731 -07 50 27.40 21.4G 20RP11 F52 C~4Apc 2020 08 22.560765 00 58 51.636 -07 50 30.65 21.9G 20RP11 F52 C~4Apc 2020 08 22.571694 00 58 51.569 -07 50 33.82 22.2G 20RP11 F52 C~4Apc 2020 08 30.573882 00 57 52.256 -08 30 01.99 21.5G 20RP11 F52 C~4Apc 2020 08 30.587370 00 57 52.124 -08 30 06.22 21.6G 20RP11 F52 C~4Apc 2020 08 30.600914 00 57 51.973 -08 30 10.04 21.4G 20RP11 F52 C~4Apc 2020 09 09.456434 00 56 00.181 -09 20 45.12 21.6i 20RP11 F51 C~4Apc 2020 09 09.467862 00 56 00.009 -09 20 48.67 21.3i 20RP11 F51 C~4Apc 2020 09 09.490769 00 55 59.696 -09 20 55.85 21.7i 20RP11 F51 C~4Apc 2020 09 13.462316 00 55 04.032 -09 41 31.96 21.4G 20RP11 F52 C~4Apc 2020 09 13.473862 00 55 03.863 -09 41 35.63 21.8G 20RP11 F52 C~4Apc 2020 09 13.497019 00 55 03.512 -09 41 42.70 21.2G 20RP11 F52 C~4Apc 2020 09 14.369648 00 54 50.612 -09 46 13.90 21.6G 20RP11 F51 C~4Apc 2020 09 14.383317 00 54 50.401 -09 46 18.22 21.6G 20RP11 F51 C~4Apc 2020 09 14.397046 00 54 50.188 -09 46 22.83 21.2G 20RP11 F51 C~4Apc 2020 09 15.395456 00 54 35.068 -09 51 32.68 21.4G 20RP11 F52 C~4Apc 2020 09 15.412598 00 54 34.791 -09 51 37.71 21.8G 20RP11 F52 C~4Apc 2020 09 15.429756 00 54 34.517 -09 51 42.88 21.4G 20RP11 F52 C~4Apc 2020 09 15.446845 00 54 34.246 -09 51 48.60 21.4G 20RP11 F52 C~4Apc 2020 09 18.345861 00 53 48.668 -10 06 44.52 22.3G 20RP11 F52 C~4Apc 2020 09 18.362924 00 53 48.424 -10 06 49.72 22.8G 20RP11 F52 C~4Apc 2020 09 18.379979 00 53 48.114 -10 06 55.25 23.2G 20RP11 F52 C~4Apc 2020 09 18.396983 00 53 47.862 -10 07 00.82 23.0G 20RP11 F52 C~4Apc 2020 10 05.474501 00 48 45.094 -11 30 17.53 21.6G 20RP11 F51 C~4Apc 2020 10 10.373547 00 47 14.006 -11 51 44.03 21.7w 20RP11 F51 C~4Apc 2020 10 10.385190 00 47 13.774 -11 51 46.92 21.5w 20RP11 F51 C~4Apc 2020 10 10.396828 00 47 13.564 -11 51 49.89 21.5w 20RP11 F51 C~4Apc 2020 10 10.408476 00 47 13.338 -11 51 52.86 21.6w 20RP11 F51 C~4Apc 2020 10 14.421334 00 45 59.482 -12 08 19.81 21.6w 20RP11 F51 C~4Apc 2020 10 14.432486 00 45 59.269 -12 08 22.37 21.6w 20RP11 F51 C~4Apc 2020 10 14.443616 00 45 59.066 -12 08 24.96 21.5w 20RP11 F51 C~4Apc 2020 10 14.454719 00 45 58.852 -12 08 27.63 21.8w 20RP11 F51 C~4Apc 2020 10 15.24079 00 45 44.61 -12 11 33.1 20RP11 711 C~4Apc 2020 10 15.24547 00 45 44.55 -12 11 33.7 20RP11 711 C~4Apc 2020 10 15.24987 00 45 44.46 -12 11 36.1 20RP11 711 C~4Apc 2020 10 20.31455 00 44 14.729 -12 30 24.12 21.3w 20RP11 F52 C~4Apc 2020 10 20.32673 00 44 14.468 -12 30 26.78 21.4w 20RP11 F52 C~4Apc 2020 10 20.33892 00 44 14.270 -12 30 29.63 21.1w 20RP11 F52 C~4Apc 2021 09 27.59091 03 19 29.249 -11 31 33.84 21.0i 20RP11 F51 C~5Bm4 2021 09 27.60295 03 19 29.189 -11 31 37.69 21.0i 20RP11 F51 C~5Bm4 2021 09 27.61495 03 19 29.089 -11 31 41.73 20.9i 20RP11 F51 C~5Bm4 2021 10 01.42647 03 19 03.41 -11 52 43.2 21.4V 20RP11 691 C~5Bm4 2021 10 01.44065 03 19 03.31 -11 52 47.7 21.3V 20RP11 691 C~5Bm4 2021 10 01.45485 03 19 03.20 -11 52 52.1 21.3V 20RP11 691 C~5Bm4 2021 10 14.56318 03 16 35.305 -13 01 30.77 21.3w 20RP11 F51 C~5Bm4 2021 10 14.57418 03 16 35.139 -13 01 34.13 21.3w 20RP11 F51 C~5Bm4 2021 10 14.58520 03 16 34.959 -13 01 37.41 21.3w 20RP11 F51 C~5Bm4 2021 10 31.45950 03 11 40.852 -14 14 29.69 21.3w 20RP11 F51 C~5Bm4 2021 10 31.48355 03 11 40.351 -14 14 34.81 21.2w 20RP11 F51 C~5Bm4 2021 10 31.49560 03 11 40.109 -14 14 37.36 21.1w 20RP11 F51 C~5Bm4 2021 11 07.45401 03 09 19.047 -14 37 15.92 21.2w 20RP11 F52 C~5Bm4 2021 11 07.47594 03 09 18.589 -14 37 19.93 21.1w 20RP11 F52 C~5Bm4 2021 11 25.39901 03 03 16.064 -15 10 47.32 21.1i 20RP11 F51 C~5HP7 2021 11 25.41133 03 03 15.823 -15 10 47.38 20.8i 20RP11 F51 C~5HP7 2021 11 25.42366 03 03 15.582 -15 10 47.94 21.1i 20RP11 F51 C~5HP7 2021 11 28.42509 03 02 19.986 -15 12 41.76 21.1w 20RP11 F51 C~5HP7 2021 11 28.43706 03 02 19.766 -15 12 41.97 21.3w 20RP11 F51 C~5HP7 2021 11 28.44907 03 02 19.535 -15 12 42.50 21.3w 20RP11 F51 C~5HP7 2021 11 28.46114 03 02 19.315 -15 12 42.73 21.1w 20RP11 F51 C~5HP7 2022 10 19.589229 05 36 03.090 -10 03 11.75 21.8w 20RP11 F51 C~5tbg 2022 10 19.600926 05 36 03.062 -10 03 14.70 21.6w 20RP11 F51 C~5tbg 2022 10 19.612618 05 36 03.012 -10 03 17.66 21.6w 20RP11 F51 C~5tbg 2022 10 19.624336 05 36 02.985 -10 03 20.42 21.5w 20RP11 F51 C~5tbg 2022 11 01.513080 05 34 44.466 -10 53 52.27 21.8w 20RP11 F51 C~5zHG 2022 11 01.525200 05 34 44.350 -10 53 54.97 21.6w 20RP11 F51 C~5zHG 2022 11 01.549377 05 34 44.089 -10 53 59.95 21.8w 20RP11 F51 C~5zHG 2024 01 09.182840 07 00 47.068 -07 13 37.52 22.2G 20RP11 G37 C~7gya 2024 01 09.297770 07 00 44.630 -07 13 25.12 20RP11 G37 C~7gya 2024 01 09.410930 07 00 42.229 -07 13 12.92 20RP11 G37 C~7gya
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 -0.13 0.00 0.21
2 0.0000 0.00 0.20 0.00 0.04
3 0.0001 0.00 -0.02 0.00 -0.06
4 0.0001 0.00 0.42 0.00 0.02
5 0.0001 0.00 0.38 0.00 -0.27
6 0.0001 0.00 -0.04 0.00 -0.35
7 0.0002 0.00 -0.04 0.00 -0.38
8 0.0221 0.00 0.03 0.00 0.01
9 0.0221 0.00 0.04 0.00 -0.14
10 0.0221 0.00 -0.22 0.00 0.14
11 0.0491 0.00 0.08 0.00 0.03
12 0.0492 0.00 -0.12 0.00 0.04
13 0.0492 0.00 -0.02 0.00 -0.01
14 0.0601 0.00 -0.03 0.00 0.07
15 0.0601 0.00 0.09 0.00 -0.01
16 0.0602 0.00 0.16 0.00 0.12
17 0.0626 0.00 -0.12 0.00 0.13
18 0.0626 0.00 -0.11 0.00 0.07
19 0.0627 0.00 -0.11 0.00 -0.26
20 0.0654 0.00 -0.04 0.00 -0.15
21 0.0654 0.00 -0.12 0.00 0.15
22 0.0655 0.00 -0.14 0.00 0.31
23 0.0655 0.00 -0.12 0.00 -0.10
24 0.0735 0.00 -0.23 0.00 0.07
25 0.0735 0.00 0.36 0.00 0.14
26 0.0736 0.00 -0.03 0.00 -0.12
27 0.0736 0.00 0.44 0.00 -0.44
28 0.1204 0.00 -0.35 0.00 -0.56
29 0.1338 0.00 -0.07 0.00 0.02
30 0.1338 0.00 -0.20 0.00 0.09
31 0.1338 0.00 0.00 0.00 0.08
32 0.1339 0.00 -0.04 0.00 0.06
33 0.1449 0.00 -0.02 0.00 -0.05
34 0.1449 0.00 -0.06 0.00 0.04
35 0.1449 0.00 0.04 0.00 0.09
36 0.1450 0.00 -0.03 0.00 0.05
37 0.1471 0.00 -0.11 0.00 0.30
38 0.1471 0.00 0.31 0.00 0.79
39 0.1471 0.00 0.19 0.00 -0.58
40 0.1610 0.00 0.17 0.00 0.32
41 0.1610 0.00 -0.48 0.00 0.24
42 0.1611 0.00 -0.18 0.00 -0.03
43 1.0981 0.00 0.15 0.00 -0.10
44 1.0981 0.00 0.38 0.00 0.05
45 1.0982 0.00 0.01 0.00 -0.00
46 1.1086 0.00 -0.65 0.00 -0.42
47 1.1086 0.00 -0.35 0.00 -0.26
48 1.1087 0.00 -0.20 0.00 -0.00
49 1.1446 0.00 0.25 0.00 0.21
50 1.1446 0.00 0.25 0.00 0.09
51 1.1446 0.00 0.04 0.00 0.06
52 1.1908 0.00 0.18 0.00 -0.02
53 1.1909 0.00 0.04 0.00 0.06
54 1.1909 0.00 0.11 0.00 0.11
55 1.2100 0.00 0.02 0.00 0.13
56 1.2100 0.00 0.17 0.00 -0.09
57 1.2591 0.00 -0.06 0.00 -0.43
58 1.2591 0.00 -0.05 0.00 0.10
59 1.2592 0.00 -0.05 0.00 0.14
60 1.2674 0.00 0.00 0.00 -0.03
61 1.2674 0.00 0.07 0.00 0.07
62 1.2675 0.00 -0.02 0.00 -0.15
63 1.2675 0.00 0.06 0.00 -0.07
64 2.1576 0.00 -0.00 0.00 0.03
65 2.1577 0.00 0.08 0.00 0.02
66 2.1577 0.00 -0.18 0.00 -0.01
67 2.1577 0.00 -0.09 0.00 0.17
68 2.1930 0.00 -0.12 0.00 -0.08
69 2.1931 0.00 0.03 0.00 -0.16
70 2.1931 0.00 -0.11 0.00 0.08
71 3.3803 0.00 0.05 0.00 0.06
72 3.3807 0.00 0.05 0.00 0.07
73 3.3810 0.00 0.03 0.00 -0.06
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.
20RP11 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 22.521 22.520 22.521 ecceobj 0.737 0.737 0.737 incobj 30.366 30.366 30.366 qmin 5.913 5.913 5.913 qmax 39.589 39.590 44.243 amean 22.299 22.569 22.943 amin 21.119 22.463 21.624 amax 22.853 22.837 25.153 emean 0.726 0.731 0.735 emin 0.707 0.725 0.717 emax 0.737 0.737 0.759 imean 30.064 29.797 29.753 imin 29.530 29.529 29.331 imax 30.660 30.017 30.226 excite_mean 0.882 0.884 0.887 fracstop 0.001 0.001 0.002 cjmean 2.381 2.366 2.347 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 236.0 236.5 249.7 kozaiamp 2.1 1.7 12.9