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: 22SJ21 # Created Sun Dec 22 02:11:24 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 50 observations of 50 # Arc: 18.58y # First observation: 2005/03/12 # Last observation: 2023/10/09 # Chi-squared of fit: 38.85 DOF: 94 RMS: 0.16 # Min/Max residuals: -0.40 0.64 # Exact a, adot, b, bdot, g, gdot: 2.709273E-05 1.453827E-01 -2.871111E-06 -1.477194E-02 8.464322E-02 -2.606207E-02 # Covariance matrix: 1.6986E-07 -3.3406E-07 1.2200E-07 1.4187E-07 5.0402E-07 -1.3218E-06 -3.3406E-07 1.8010E-06 -2.3994E-07 -7.3866E-07 -9.9125E-07 7.0369E-06 1.2200E-07 -2.3994E-07 8.7631E-08 1.0190E-07 3.6202E-07 -9.4936E-07 1.4187E-07 -7.3866E-07 1.0190E-07 3.0575E-07 4.2098E-07 -2.8904E-06 5.0402E-07 -9.9125E-07 3.6202E-07 4.2098E-07 1.4956E-06 -3.9221E-06 -1.3218E-06 7.0369E-06 -9.4936E-07 -2.8904E-06 -3.9221E-06 2.7531E-05 # lat0 lon0 xBary yBary zBary JD0 19.450915 171.245091 -0.007826 0.329598 -0.933026 2453441.801100 # Heliocentric elements and errors Epoch: 2453442.5000 = 2005/03/13 Mean Anomaly: 278.76150 +/- 1.640 Argument of Peri: 209.06150 +/- 0.002 Long of Asc Node: 62.28856 +/- 0.000 Inclination: 18.92736 +/- 0.000 Eccentricity: 0.17225343 +/- 0.0001 Semi-Major Axis: 12.71279642 +/- 0.0004 Time of Perihelion: 2457178.6084 +/- 75.4 Perihelion: 10.52297369 +/- 0.0012 Aphelion: 14.90261916 +/- 0.0013 Period (y) 45.3283 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -11.99378865 +/- 0.0000 Ecliptic Y 1.83795978 +/- 0.0000 Ecliptic Z 3.93413701 +/- 0.0000 Ecliptic XDOT -0.00008729 +/- 0.0000 Ecliptic YDOT -0.00475164 +/- 0.0000 Ecliptic ZDOT -0.00073119 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 12.75570155 +/- 0.0000 Geocenter to KBO 11.81439397 +/- 0.0000 # Hcoef: 11.45
The following table shows the complete astrometric record for 22SJ21. 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 (22SJ21) followed by the observatory code and reference code for the source of the astrometry.
2005 03 12.300357 12 00 11.53 +21 15 38.1 21.9r 22SJ21 645 C~5rIu 2005 03 12.301187 12 00 11.52 +21 15 38.2 21.9i 22SJ21 645 C~5rIu 2005 03 12.303674 12 00 11.48 +21 15 38.5 22.5g 22SJ21 645 C~5rIu 2013 05 05.273552 16 31 27.54 -23 53 38.7 22SJ21 W84 C~5rIu 2013 05 05.275614 16 31 27.50 -23 53 38.6 22SJ21 W84 C~5rIu 2013 05 30.245727 16 24 09.16 -23 55 38.1 22SJ21 W84 C~5rIu 2013 05 30.251049 16 24 09.06 -23 55 38.0 22SJ21 W84 C~5rIu 2017 08 08.049157 19 51 49.70 -38 00 09.9 22SJ21 W84 C~5rIu 2018 10 26.033167 20 41 45.60 -36 28 21.1 22SJ21 W84 C~5rIu 2018 10 26.089756 20 41 45.96 -36 28 15.1 22SJ21 W84 C~5rIu 2019 06 27.224917 21 59 27.75 -33 10 07.9 22SJ21 W84 C~5rIu 2020 11 07.122390 22 22 07.83 -30 58 23.0 22SJ21 W84 C~5rIu 2021 07 20.564569 23 27 19.160 -25 30 46.61 22.4G 22SJ21 F51 C~5rIu 2021 07 20.574260 23 27 19.104 -25 30 48.13 21.2G 22SJ21 F51 C~5rIu 2021 07 20.583920 23 27 19.062 -25 30 48.74 21.7G 22SJ21 F51 C~5rIu 2021 07 20.593603 23 27 18.958 -25 30 50.00 22.6G 22SJ21 F51 C~5rIu 2021 08 18.384812 23 22 08.90 -26 29 11.4 21.4i 22SJ21 W84 C~5rIu 2021 09 07.436763 23 17 00.460 -27 02 06.28 22.0G 22SJ21 F52 C~5rIu 2021 09 07.446949 23 17 00.286 -27 02 07.04 22.0G 22SJ21 F52 C~5rIu 2021 09 07.467328 23 16 59.950 -27 02 08.52 22.2G 22SJ21 F52 C~5rIu 2021 09 08.422662 23 16 44.517 -27 03 23.61 22.0G 22SJ21 F51 C~5rIu 2021 09 08.435166 23 16 44.307 -27 03 24.57 22.0G 22SJ21 F51 C~5rIu 2021 09 08.448481 23 16 44.084 -27 03 25.75 22.1G 22SJ21 F51 C~5rIu 2021 09 08.461962 23 16 43.864 -27 03 26.76 22.0G 22SJ21 F51 C~5rIu 2021 09 08.565753 23 16 42.151 -27 03 34.66 21.6G 22SJ21 F51 C~5rIu 2021 10 02.371738 23 10 31.593 -27 22 17.61 22.8G 22SJ21 F51 C~5rIu 2021 10 02.381421 23 10 31.462 -27 22 17.49 22.3G 22SJ21 F51 C~5rIu 2021 10 02.391096 23 10 31.331 -27 22 17.42 22.0G 22SJ21 F51 C~5rIv 2021 10 30.268018 23 05 26.136 -27 10 17.73 22.1G 22SJ21 F52 C~5rIv 2021 10 30.276924 23 05 26.075 -27 10 16.97 22.1G 22SJ21 F52 C~5rIv 2021 10 30.285867 23 05 26.014 -27 10 16.16 22.1G 22SJ21 F52 C~5rIv 2022 08 30.468151 23 58 13.306 -21 49 53.44 22.6G 22SJ21 F52 C~5rIv 2022 08 31.489266 23 57 59.088 -21 51 40.88 22.3G 22SJ21 F52 C~5rIv 2022 08 31.500133 23 57 58.936 -21 51 41.81 22.3G 22SJ21 F52 C~5rIv 2022 08 31.521814 23 57 58.636 -21 51 43.97 21.9G 22SJ21 F52 C~5rIv 2022 09 20.424247 23 53 00.074 -22 21 20.34 22.5w 22SJ21 F51 C~5rIv 2022 09 20.435417 23 52 59.877 -22 21 21.12 22.2w 22SJ21 F51 C~5rIv 2022 09 20.446532 23 52 59.715 -22 21 22.01 22.3w 22SJ21 F51 C~5rIv 2022 09 20.457529 23 52 59.531 -22 21 22.69 22.1w 22SJ21 F51 C~5rIv 2022 09 23.384707 23 52 14.136 -22 24 40.57 22.2G 22SJ21 568 C~5rIv 2022 09 23.385915 23 52 14.120 -22 24 40.62 22.0G 22SJ21 568 C~5rIv 2022 09 23.387122 23 52 14.100 -22 24 40.71 22.0G 22SJ21 568 C~5rIv 2022 09 26.361736 23 51 28.127 -22 27 41.82 21.5G 22SJ21 F51 C~5rIv 2022 09 26.372849 23 51 27.968 -22 27 42.33 21.7G 22SJ21 F51 C~5rIv 2023 09 11.423714 00 30 05.748 -16 59 02.66 22.1w 22SJ21 F52 C~79O1 2023 09 11.434632 00 30 05.578 -16 59 03.79 22.5w 22SJ21 F52 C~79O1 2023 09 11.445549 00 30 05.426 -16 59 04.45 21.9w 22SJ21 F52 C~79O1 2023 10 09.371568 00 23 14.911 -17 33 32.53 22.4w 22SJ21 F51 C~7BoG 2023 10 09.382784 00 23 14.715 -17 33 33.00 22.5w 22SJ21 F51 C~7BoG 2023 10 09.395571 00 23 14.543 -17 33 33.73 22.3w 22SJ21 F51 C~7BoG
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 0.02 0.00 0.02
2 0.0000 0.00 0.06 0.00 0.04
3 0.0000 0.00 0.01 0.00 0.13
4 8.1478 0.00 0.07 0.00 -0.05
5 8.1478 0.00 -0.03 0.00 0.07
6 8.2161 0.00 0.03 0.00 -0.04
7 8.2162 0.00 0.03 0.00 0.05
8 12.4073 0.00 -0.18 0.00 -0.07
9 13.6228 0.00 0.07 0.00 -0.04
10 13.6230 0.00 0.07 0.00 -0.31
11 14.2914 0.00 -0.17 0.00 0.64
12 15.6573 0.00 -0.01 0.00 0.04
13 16.3566 0.00 0.01 0.00 -0.06
14 16.3567 0.00 0.20 0.00 -0.40
15 16.3567 0.00 0.60 0.00 0.16
16 16.3567 0.00 0.07 0.00 0.07
17 16.4355 0.00 0.00 0.00 0.01
18 16.4904 0.00 -0.04 0.00 -0.10
19 16.4905 0.00 -0.12 0.00 -0.05
20 16.4905 0.00 -0.11 0.00 0.09
21 16.4931 0.00 -0.09 0.00 0.09
22 16.4932 0.00 -0.14 0.00 0.10
23 16.4932 0.00 -0.18 0.00 -0.04
24 16.4933 0.00 -0.13 0.00 -0.01
25 16.4935 0.00 -0.13 0.00 0.01
26 16.5587 0.00 -0.21 0.00 -0.35
27 16.5587 0.00 -0.06 0.00 -0.09
28 16.5588 0.00 0.09 0.00 0.12
29 16.6351 0.00 0.01 0.00 -0.31
30 16.6351 0.00 0.08 0.00 -0.13
31 16.6351 0.00 0.15 0.00 0.10
32 17.4679 0.00 -0.33 0.00 -0.09
33 17.4707 0.00 -0.02 0.00 -0.21
34 17.4708 0.00 0.04 0.00 -0.00
35 17.4708 0.00 0.21 0.00 0.10
36 17.5253 0.00 0.24 0.00 0.05
37 17.5254 0.00 -0.06 0.00 0.07
38 17.5254 0.00 0.16 0.00 -0.04
39 17.5254 0.00 0.01 0.00 0.06
40 17.5334 0.00 -0.06 0.00 0.05
41 17.5334 0.00 -0.01 0.00 0.08
42 17.5334 0.00 -0.02 0.00 0.07
43 17.5416 0.00 -0.24 0.00 0.07
44 17.5416 0.00 -0.00 0.00 0.20
45 18.5000 0.00 0.10 0.00 -0.05
46 18.5000 0.00 -0.14 0.00 -0.13
47 18.5001 0.00 -0.10 0.00 0.26
48 18.5765 0.00 0.11 0.00 0.01
49 18.5765 0.00 -0.30 0.00 0.07
50 18.5766 0.00 -0.01 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.
22SJ21 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 12.649 12.649 12.649 ecceobj 0.171 0.171 0.171 incobj 18.930 18.930 18.930 qmin 9.771 9.439 9.465 qmax 16.718 18.301 16.151 amean 12.590 12.536 12.549 amin 11.986 12.222 12.227 amax 13.581 14.148 12.896 emean 0.133 0.116 0.110 emin 0.003 0.003 0.002 emax 0.257 0.294 0.253 imean 19.278 15.926 18.572 imin 16.837 10.491 15.172 imax 20.777 20.243 21.046 excite_mean 0.360 0.303 0.342 fracstop 0.026 0.142 0.482 cjmean 3.600 3.632 3.614 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 179.6 185.0 181.8 kozaiamp 179.5 179.3 180.0