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: 20VL26
# Created Sun Dec 22 02:11:15 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 61 observations of 61
# Arc: 6.07y
# First observation: 2018/11/11
# Last observation: 2024/12/07
# Chi-squared of fit: 29.53 DOF: 116 RMS: 0.12
# Min/Max residuals: -0.28 0.50
# Exact a, adot, b, bdot, g, gdot:
2.249874E-05 6.709912E-02 -8.393316E-06 -2.382594E-02 4.685006E-02 -3.340453E-02
# Covariance matrix:
6.9023E-13 -2.7982E-13 -1.5588E-13 8.1697E-14 -7.3229E-14 -3.2159E-13
-2.7982E-13 1.3251E-13 8.3429E-14 -4.3712E-14 4.2319E-14 1.7191E-13
-1.5588E-13 8.3429E-14 3.2381E-13 -8.3505E-14 3.0157E-14 1.1839E-13
8.1697E-14 -4.3712E-14 -8.3505E-14 2.7178E-14 -1.5540E-14 -6.2039E-14
-7.3229E-14 4.2319E-14 3.0157E-14 -1.5540E-14 7.4874E-14 5.8141E-14
-3.2159E-13 1.7191E-13 1.1839E-13 -6.2039E-14 5.8141E-14 2.4408E-13
# lat0 lon0 xBary yBary zBary JD0
1.880320 36.089784 -0.218768 0.031998 -0.970547 2458433.707663
# Heliocentric elements and errors
Epoch: 2458434.5000 = 2018/11/12
Mean Anomaly: 349.49139 +/- 0.001
Argument of Peri: 237.08417 +/- 0.001
Long of Asc Node: 221.68653 +/- 0.000
Inclination: 19.63122 +/- 0.000
Eccentricity: 0.67718598 +/- 0.0000
Semi-Major Axis: 54.12140456 +/- 0.0037
Time of Perihelion: 2462679.6661 +/- 14.4
Perihelion: 17.47114835 +/- 0.0016
Aphelion: 90.77166077 +/- 0.0063
Period (y) 398.1638 +/- 0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 17.89518852 +/- 0.0001
Ecliptic Y 13.30824129 +/- 0.0001
Ecliptic Z 0.70011198 +/- 0.0000
Ecliptic XDOT -0.00384185 +/- 0.0000
Ecliptic YDOT 0.00204396 +/- 0.0000
Ecliptic ZDOT -0.00145585 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 22.31249969 +/- 0.0001
Geocenter to KBO 21.34496066 +/- 0.0001
# Hcoef: 8.57
The following table shows the complete astrometric record for 20VL26. 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 (20VL26) followed by the observatory code and reference code for the source of the astrometry.
2018 11 11.206862 02 12 31.11 +15 19 29.1 21.5z 20VL26 W84 C~5zHI 2020 11 13.18516 02 48 16.295 +15 05 22.54 22.1r 20VL26 807 C~5Jzg 2020 11 15.18749 02 47 59.145 +15 03 34.31 22.2r 20VL26 807 C~5Jzg 2020 12 16.21812 02 44 09.166 +14 38 43.51 22.2r 20VL26 304 C~5Jzg 2020 12 17.20906 02 44 03.554 +14 38 04.73 22.2r 20VL26 304 C~5Jzg 2021 01 15.07337 02 42 30.610 +14 24 55.17 22.1r 20VL26 304 C~5Jzg 2021 01 16.06583 02 42 30.099 +14 24 41.15 22.1r 20VL26 304 C~5Jzg 2021 09 03.40480 03 15 15.670 +15 42 49.42 22.1r 20VL26 304 C~5Jzg 2021 10 30.34307 03 10 10.593 +15 02 18.39 22.0r 20VL26 304 C~5Jzg 2021 10 30.34975 03 10 10.538 +15 02 18.16 22.1r 20VL26 304 C~5Jzg 2022 10 29.403500 03 31 24.481 +14 39 30.38 21.5G 20VL26 G37 C~5zHI 2022 10 29.452000 03 31 24.055 +14 39 27.75 20VL26 G37 C~5zHI 2022 10 29.499790 03 31 23.647 +14 39 25.19 20VL26 G37 C~5zHI 2022 11 01.358543 03 30 59.221 +14 36 55.68 21.5w 20VL26 F52 C~5zHI 2022 11 01.369287 03 30 59.128 +14 36 55.21 21.6w 20VL26 F52 C~5zHI 2022 11 01.380109 03 30 59.028 +14 36 54.55 21.6w 20VL26 F52 C~5zHI 2022 11 16.347884 03 28 44.318 +14 23 56.11 21.7w 20VL26 F51 C~63mt 2022 11 16.359551 03 28 44.202 +14 23 55.47 21.6w 20VL26 F51 C~63mt 2022 11 16.371244 03 28 44.096 +14 23 55.06 21.5w 20VL26 F51 C~63mt 2022 12 14.268686 03 24 41.940 +14 02 36.04 21.4w 20VL26 F52 C~67Ik 2022 12 14.279605 03 24 41.839 +14 02 35.37 21.6w 20VL26 F52 C~67Ik 2022 12 14.290520 03 24 41.761 +14 02 35.10 21.4w 20VL26 F52 C~67Ik 2022 12 14.301462 03 24 41.673 +14 02 34.55 21.3w 20VL26 F52 C~67Ik 2023 10 17.438468 03 55 08.274 +14 17 02.05 21.5w 20VL26 F51 C~7Bkf 2023 10 17.451318 03 55 08.196 +14 17 01.33 21.5w 20VL26 F51 C~7Bkf 2023 10 17.464211 03 55 08.101 +14 17 00.69 21.6w 20VL26 F51 C~7Bkf 2023 10 17.477256 03 55 08.007 +14 17 00.02 21.7w 20VL26 F51 C~7Bkf 2023 10 22.548436 03 54 32.214 +14 12 44.06 21.7w 20VL26 F51 C~7Mub 2023 10 22.559964 03 54 32.112 +14 12 43.39 21.7w 20VL26 F51 C~7Mub 2023 10 22.571524 03 54 32.036 +14 12 42.90 21.7w 20VL26 F51 C~7Mub 2023 10 22.583144 03 54 31.941 +14 12 42.30 21.6w 20VL26 F51 C~7Mub 2023 11 12.430454 03 51 35.831 +13 54 55.30 21.4G 20VL26 V00 C~7RR2 2023 11 12.438351 03 51 35.784 +13 54 54.76 21.8G 20VL26 V00 C~7RR2 2023 11 12.443854 03 51 35.694 +13 54 54.18 21.2G 20VL26 V00 C~7RR2 2023 11 12.449360 03 51 35.633 +13 54 53.86 21.4G 20VL26 V00 C~7RR2 2023 11 16.335824 03 50 59.530 +13 51 39.75 21.2w 20VL26 F52 C~7WXn 2023 11 16.348682 03 50 59.418 +13 51 38.99 21.3w 20VL26 F52 C~7WXn 2023 11 16.374438 03 50 59.169 +13 51 37.77 21.5w 20VL26 F52 C~7WXn 2023 12 04.443296 03 48 09.882 +13 37 39.70 21.4w 20VL26 F51 C~7XOS 2023 12 04.474002 03 48 09.596 +13 37 38.51 21.4w 20VL26 F51 C~7XOS 2023 12 04.487603 03 48 09.479 +13 37 37.91 21.5w 20VL26 F51 C~7XOS 2024 01 01.227826 03 44 31.607 +13 22 05.51 21.5w 20VL26 F52 C~7dN0 2024 01 01.240157 03 44 31.529 +13 22 05.33 21.3w 20VL26 F52 C~7dN0 2024 01 01.252584 03 44 31.459 +13 22 04.86 21.5w 20VL26 F52 C~7dN0 2024 01 01.264995 03 44 31.367 +13 22 04.71 21.6w 20VL26 F52 C~7dN0 2024 01 07.332508 03 43 57.434 +13 19 56.93 21.7w 20VL26 F51 C~7gyg 2024 01 07.343785 03 43 57.384 +13 19 56.84 21.6w 20VL26 F51 C~7gyg 2024 01 07.354934 03 43 57.324 +13 19 56.65 21.6w 20VL26 F51 C~7gyg 2024 01 07.366080 03 43 57.258 +13 19 56.54 21.9w 20VL26 F51 C~7gyg 2024 08 08.601630 04 17 22.221 +14 17 19.96 21.8w 20VL26 F52 C~8AkA 2024 08 08.606916 04 17 22.253 +14 17 19.83 21.7w 20VL26 F52 C~8AkA 2024 08 08.612188 04 17 22.309 +14 17 19.57 21.7w 20VL26 F52 C~8AkA 2024 08 08.617466 04 17 22.334 +14 17 19.56 21.7w 20VL26 F52 C~8AkA 2024 12 02.470932 04 11 36.361 +12 56 38.35 21.4w 20VL26 F51 C~8Sk9 2024 12 02.482877 04 11 36.246 +12 56 37.72 21.3w 20VL26 F51 C~8Sk9 2024 12 02.494762 04 11 36.125 +12 56 37.25 21.4w 20VL26 F51 C~8Sk9 2024 12 02.506616 04 11 36.012 +12 56 36.83 21.5w 20VL26 F51 C~8Sk9 2024 12 07.315668 04 10 50.136 +12 53 27.54 21.3w 20VL26 F51 C~8Sk9 2024 12 07.328431 04 10 50.009 +12 53 26.83 21.4w 20VL26 F51 C~8Sk9 2024 12 07.341178 04 10 49.883 +12 53 26.27 21.3w 20VL26 F51 C~8Sk9 2024 12 07.353991 04 10 49.755 +12 53 25.77 21.3w 20VL26 F51 C~8Sk9
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 0.08
2 2.0068 0.00 -0.09 0.00 -0.07
3 2.0123 0.00 -0.24 0.00 -0.28
4 2.0972 0.00 0.08 0.00 -0.23
5 2.0999 0.00 0.12 0.00 -0.03
6 2.1790 0.00 0.11 0.00 -0.04
7 2.1817 0.00 0.08 0.00 0.07
8 2.8123 0.00 -0.19 0.00 0.26
9 2.9682 0.00 0.15 0.00 -0.01
10 2.9682 0.00 0.20 0.00 0.12
11 3.9649 0.00 0.01 0.00 0.02
12 3.9651 0.00 -0.13 0.00 -0.06
13 3.9652 0.00 -0.10 0.00 -0.11
14 3.9730 0.00 -0.04 0.00 -0.08
15 3.9731 0.00 -0.02 0.00 0.01
16 3.9731 0.00 -0.09 0.00 -0.09
17 4.0141 0.00 -0.07 0.00 0.08
18 4.0141 0.00 -0.17 0.00 0.03
19 4.0141 0.00 -0.12 0.00 0.22
20 4.0905 0.00 0.12 0.00 0.18
21 4.0905 0.00 -0.12 0.00 -0.07
22 4.0906 0.00 -0.01 0.00 0.08
23 4.0906 0.00 -0.05 0.00 -0.05
24 4.9315 0.00 0.00 0.00 -0.01
25 4.9315 0.00 0.16 0.00 -0.09
26 4.9316 0.00 0.06 0.00 -0.09
27 4.9316 0.00 0.00 0.00 -0.11
28 4.9455 0.00 0.16 0.00 0.02
29 4.9455 0.00 -0.06 0.00 -0.06
30 4.9456 0.00 0.12 0.00 0.04
31 4.9456 0.00 0.01 0.00 0.03
32 5.0027 0.00 0.09 0.00 0.48
33 5.0027 0.00 0.50 0.00 0.34
34 5.0027 0.00 -0.08 0.00 0.04
35 5.0027 0.00 -0.22 0.00 0.00
36 5.0134 0.00 -0.04 0.00 0.08
37 5.0134 0.00 0.12 0.00 -0.05
38 5.0135 0.00 0.07 0.00 -0.01
39 5.0629 0.00 -0.03 0.00 -0.10
40 5.0630 0.00 -0.03 0.00 0.02
41 5.0631 0.00 0.11 0.00 0.00
42 5.1390 0.00 -0.04 0.00 -0.04
43 5.1390 0.00 -0.05 0.00 0.07
44 5.1391 0.00 0.07 0.00 -0.11
45 5.1391 0.00 -0.14 0.00 0.03
46 5.1557 0.00 -0.10 0.00 -0.20
47 5.1557 0.00 0.04 0.00 -0.08
48 5.1558 0.00 0.02 0.00 -0.06
49 5.1558 0.00 -0.10 0.00 0.04
50 5.7424 0.00 -0.04 0.00 0.07
51 5.7424 0.00 -0.16 0.00 0.03
52 5.7424 0.00 0.07 0.00 -0.14
53 5.7424 0.00 -0.16 0.00 -0.06
54 6.0596 0.00 0.01 0.00 0.07
55 6.0596 0.00 0.05 0.00 -0.07
56 6.0597 0.00 -0.02 0.00 -0.05
57 6.0597 0.00 0.03 0.00 0.02
58 6.0729 0.00 0.02 0.00 0.16
59 6.0729 0.00 -0.04 0.00 -0.07
60 6.0729 0.00 -0.09 0.00 -0.14
61 6.0730 0.00 -0.16 0.00 -0.16
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.
20VL26 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 55.320 55.319 55.321 ecceobj 0.682 0.682 0.682 incobj 19.541 19.541 19.541 qmin 17.201 17.080 17.200 qmax 100.591 93.060 93.192 amean 56.479 52.889 53.237 amin 53.107 51.579 50.284 amax 59.826 55.319 55.424 emean 0.679 0.658 0.665 emin 0.669 0.630 0.637 emax 0.690 0.682 0.682 imean 21.969 22.376 21.649 imin 20.239 20.160 20.235 imax 24.128 25.106 24.190 excite_mean 0.775 0.760 0.761 fracstop 0.044 0.039 0.036 cjmean 2.405 2.421 2.416 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 255.7 256.5 255.3 kozaiamp 16.1 17.7 17.9