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: 538495 # Created Sun Dec 22 02:07:33 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 110 observations of 111 # Arc: 7.37y # First observation: 2011/11/24 # Last observation: 2019/04/09 # Chi-squared of fit: 199.98 DOF: 214 RMS: 0.24 # Min/Max residuals: -0.72 1.03 # Exact a, adot, b, bdot, g, gdot: 3.476390E-05 2.541163E-01 1.083274E-05 8.000533E-02 1.156942E-01 -6.972921E-02 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 11.633320 91.987948 0.495431 0.171644 -0.833603 2455889.959096 # Heliocentric elements and errors Epoch: 2455890.5000 = 2011/11/25 Mean Anomaly: 338.22696 +/- 0.000 Argument of Peri: 90.39701 +/- 0.000 Long of Asc Node: 59.48683 +/- 0.000 Inclination: 20.80927 +/- 0.000 Eccentricity: 0.46158970 +/- 0.0000 Semi-Major Axis: 14.90770816 +/- 0.0000 Time of Perihelion: 2457162.0439 +/- 0.0 Perihelion: 8.02646359 +/- 0.0000 Aphelion: 21.78895273 +/- 0.0000 Period (y) 57.5605 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 0.17502906 +/- 0.0000 Ecliptic Y 9.32971515 +/- 0.0000 Ecliptic Z 1.74300108 +/- 0.0000 Ecliptic XDOT -0.00594454 +/- 0.0000 Ecliptic YDOT -0.00220047 +/- 0.0000 Ecliptic ZDOT 0.00152173 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 9.49284639 +/- 0.0000 Geocenter to KBO 8.64358945 +/- 0.0000 # Hcoef: 11.97
The following table shows the complete astrometric record for 538495. 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 (538495) followed by the observatory code and reference code for the source of the astrometry.
2011 11 24.45833 06 09 30.918 +35 03 22.31 21.7G 538495 F51 C~2jiM 2011 11 24.47239 06 09 30.659 +35 03 23.60 21.7G 538495 F51 C~2jiM 2011 11 24.48648 06 09 30.405 +35 03 24.89 21.6G 538495 F51 C~2jiM 2011 11 24.50057 06 09 30.158 +35 03 26.18 21.8G 538495 F51 C~2jiM 2012 01 03.34012 05 55 08.950 +35 43 16.81 21.5G 538495 F51 C~2jiM 2012 01 03.35305 05 55 08.666 +35 43 17.30 21.5G 538495 F51 C~2jiM 2012 10 18.62271 07 29 52.771 +36 40 17.27 21.4G 538495 F51 C~2jiM 2012 10 18.63491 07 29 52.887 +36 40 18.59 21.9G 538495 F51 C~2jiM 2012 10 31.55667 07 31 16.937 +37 08 18.11 21.6G 538495 F51 C~2jiM 2012 10 31.56905 07 31 16.972 +37 08 19.53 21.9G 538495 F51 C~2jiM 2012 11 28.50571 07 29 00.947 +38 16 05.88 21.3G 538495 F51 C~2jiM 2012 11 28.51903 07 29 00.766 +38 16 07.75 21.8G 538495 F51 C~2jiM 2014 12 27.47943 10 36 22.168 +33 00 16.78 20.4G 538495 F51 C~2jiM 2014 12 27.49174 10 36 22.097 +33 00 19.04 21.1G 538495 F51 C~2jiM 2014 12 27.50401 10 36 22.055 +33 00 21.27 20.8G 538495 F51 C~2jiM 2015 01 11.66920 10 34 47.843 +33 45 54.90 20.7G 538495 F51 C~2jiM 2015 01 12.66743 10 34 37.456 +33 48 58.73 21.2G 538495 F51 C~2jiM 2015 01 13.67518 10 34 26.402 +33 52 04.15 21.4G 538495 F51 C~2jiM 2015 02 27.30402 10 20 28.74 +35 38 54.7 20.2V 538495 G96 C~29Em 2015 02 27.31136 10 20 28.55 +35 38 54.7 20.5V 538495 G96 C~29Em 2015 02 27.31870 10 20 28.39 +35 38 55.6 20.6V 538495 G96 C~29Em 2015 02 27.32603 10 20 28.22 +35 38 56.2 21.0V 538495 G96 C~29Em 2015 03 24.35219 10 12 14.087 +35 45 35.45 21.0G 538495 F51 C~2jiM 2015 04 07.33110 10 09 11.750 +35 29 07.75 20.9G 538495 F51 C~2jiM 2015 04 09.36654 10 08 52.776 +35 25 37.66 21.3G 538495 F51 C~2jiM 2015 04 09.37769 10 08 52.688 +35 25 36.24 21.3G 538495 F51 C~2jiM 2015 04 09.38876 10 08 52.584 +35 25 35.12 21.9G 538495 F51 C~2jiM 2015 04 21.35075 10 07 44.592 +34 59 51.81 21.0G 538495 F51 C~2jiM 2015 04 21.36287 10 07 44.556 +34 59 50.11 21.0G 538495 F51 C~2jiM 2016 01 03.53061 11 57 56.936 +23 40 15.38 20.8G 538495 F51 C~2jiM 2016 01 03.54291 11 57 56.997 +23 40 17.00 21.2G 538495 F51 C~2jiM 2016 01 03.55547 11 57 57.061 +23 40 18.46 20.8G 538495 F51 C~2jiM 2016 02 03.47120 11 56 23.150 +24 55 08.40 21.1w 538495 F51 C~29Em 2016 02 03.48419 11 56 22.996 +24 55 10.42 21.2w 538495 F51 C~29Em 2016 02 03.49737 11 56 22.868 +24 55 12.65 21.1w 538495 F51 C~29Em 2016 02 10.43219 11 54 59.242 +25 13 41.73 21.0w 538495 F51 C~29Em 2016 02 10.44376 11 54 59.073 +25 13 43.53 21.0w 538495 F51 C~29Em 2016 02 10.45535 11 54 58.926 +25 13 45.29 21.1w 538495 F51 C~29Em 2016 02 10.46700 11 54 58.760 +25 13 47.32 21.1w 538495 F51 C~29Em 2016 02 11.46504 11 54 44.972 +25 16 23.38 20.8G 538495 F51 C~2jiM 2016 02 13.43349 11 54 17.044 +25 21 32.91 21.0G 538495 F51 C~2jiM 2016 02 13.44588 11 54 16.867 +25 21 34.65 21.4G 538495 F51 C~2jiM 2016 03 13.50686 11 45 21.195 +26 22 37.10 20.9w 538495 F51 C~1oeJ 2016 03 13.51800 11 45 20.970 +26 22 37.98 21.0w 538495 F51 C~1oeJ 2016 03 13.52918 11 45 20.731 +26 22 38.96 20.8w 538495 F51 C~1oeJ 2016 03 16.32495 11 44 23.16 +26 26 17.9 20.8R 538495 926 C~1oeJ 2016 03 16.34926 11 44 22.70 +26 26 19.4 20.9R 538495 926 C~1oeJ 2016 03 16.36708 11 44 22.31 +26 26 21.0 20.5R 538495 926 C~1oeJ 2016 03 17.02029 11 44 08.89 +26 27 06.8 21.3V 538495 033 C~1oeJ 2016 03 17.02300 11 44 08.82 +26 27 06.9 21.2V 538495 033 C~1oeJ 2016 03 17.02572 11 44 08.81 +26 27 07.2 20.9V 538495 033 C~1oeJ 2016 03 17.02843 11 44 08.69 +26 27 07.5 21.6V 538495 033 C~1oeJ 2016 03 17.03115 11 44 08.61 +26 27 07.9 20.8V 538495 033 C~1oeJ 2016 03 17.03385 11 44 08.59 +26 27 08.0 21.1V 538495 033 C~1oeJ 2016 03 17.11130 11 44 06.92 +26 27 12.9 21.9V 538495 033 C~1oeJ 2016 03 17.11436 11 44 06.88 +26 27 13.0 21.7V 538495 033 C~1oeJ 2016 03 17.11743 11 44 06.82 +26 27 13.3 21.8V 538495 033 C~1oeJ 2016 03 17.12049 11 44 06.76 +26 27 13.3 21.9V 538495 033 C~1oeJ 2016 03 17.12355 11 44 06.72 +26 27 13.5 21.6V 538495 033 C~1oeJ 2016 03 17.12661 11 44 06.64 +26 27 13.9 21.9V 538495 033 C~1oeJ 2016 03 17.14543 11 44 06.24 +26 27 15.2 21.5V 538495 033 C~1oeJ 2016 03 17.14848 11 44 06.17 +26 27 15.6 21.4V 538495 033 C~1oeJ 2016 03 17.15155 11 44 06.09 +26 27 15.7 21.6V 538495 033 C~1oeJ 2016 03 17.26135 11 44 03.95 +26 27 24.2 20.5R 538495 926 C~1oeJ 2016 03 17.27748 11 44 03.61 +26 27 25.8 20.4R 538495 926 C~1oeJ 2016 03 17.29358 11 44 03.27 +26 27 26.7 20.4R 538495 926 C~1oeJ 2016 04 02.12677 11 38 49.11 +26 37 07.2 20.9R 538495 H36 C~1qBJ 2016 04 02.17226 11 38 48.33 +26 37 07.9 20.6R 538495 H36 C~1qBJ 2016 04 03.17149 11 38 29.86 +26 37 09.0 21.1R 538495 H36 C~1qBJ 2016 04 03.20558 11 38 29.18 +26 37 08.8 20.1R 538495 H36 C~1qBJ 2016 04 03.24467 11 38 28.44 +26 37 08.8 20.8R 538495 H36 C~1qBJ 2016 04 24.41197 11 33 06.966 +26 20 08.92 21.1G 538495 F51 C~2jiN 2016 04 24.42470 11 33 06.803 +26 20 07.41 21.5G 538495 F51 C~2jiN 2016 04 29.20004 11 32 17.20 +26 11 57.1 21.1V 538495 G96 C~1reS 2016 04 29.20612 11 32 17.13 +26 11 56.4 21.2V 538495 G96 C~1reS 2016 04 29.21219 11 32 17.06 +26 11 55.6 20.9V 538495 G96 C~1reS 2016 04 29.21825 11 32 17.02 +26 11 54.5 21.6V 538495 G96 C~1reS 2016 04 30.35806 11 32 06.556 +26 09 45.12 21.1G 538495 F51 C~2jiN 2016 04 30.36921 11 32 06.451 +26 09 43.72 21.1G 538495 F51 C~2jiN 2016 04 30.38154 11 32 06.326 +26 09 42.26 21.2G 538495 F51 C~2jiN 2016 04 30.39274 11 32 06.214 +26 09 41.05 21.2G 538495 F51 C~2jiN 2016 05 03.36011 11 31 41.830 +26 03 37.86 21.1G 538495 F51 C~2jiN 2016 05 03.37169 11 31 41.731 +26 03 36.29 21.2G 538495 F51 C~2jiN 2017 02 02.54592 13 04 22.129 +13 30 41.53 21.6G 538495 F51 C~2jiN 2017 02 02.55758 13 04 22.087 +13 30 42.83 21.3G 538495 F51 C~2jiN 2017 02 02.56925 13 04 22.048 +13 30 43.96 21.4G 538495 F51 C~2jiN 2017 02 02.58092 13 04 22.005 +13 30 45.16 21.8G 538495 F51 C~2jiN 2017 02 09.50563 13 03 51.482 +13 43 26.90 21.6G 538495 F51 C~2jiN 2017 02 21.51220 13 02 08.83 +14 07 23.5 20.4R 538495 695 C~29Em 2017 02 21.52685 13 02 08.68 +14 07 25.3 538495 695 C~29Em 2017 02 24.45469 13 01 34.893 +14 13 25.81 21.3w 538495 F51 C~29Em 2017 02 24.46719 13 01 34.725 +14 13 27.42 21.6w 538495 F51 C~29Em 2017 02 24.56296 13 01 33.551 +14 13 39.09 21.3w 538495 F51 C~29Em 2017 02 24.57560 13 01 33.389 +14 13 40.73 21.1w 538495 F51 C~29Em 2017 02 25.35804 13 01 23.78 +14 15 15.9 20.4R 538495 H36 C~29Em 2017 02 25.38114 13 01 23.45 +14 15 19.1 20.5R 538495 H36 C~29Em 2017 03 22.39130 12 54 41.267 +15 01 57.92 21.2G 538495 F51 C~2jiN 2017 03 22.40201 12 54 41.053 +15 01 58.64 20.9G 538495 F51 C~2jiN 2017 03 30.37834 12 52 08.630 +15 12 55.98 21.1G 538495 F51 C~2jiN 2017 03 30.40356 12 52 08.130 +15 12 57.73 21.4G 538495 F51 C~2jiN 2018 03 11.52594 13 55 00.405 +03 35 22.03 21.9G 538495 F51 C~2jiN 2019 04 03.50556 14 37 36.909 -05 33 38.35 21.9w 538495 F51 C~326N 2019 04 03.51726 14 37 36.721 -05 33 37.97 22.2w 538495 F51 C~326N 2019 04 03.54063 14 37 36.352 -05 33 36.61 21.9w 538495 F51 C~326N 2019 04 08.48603 14 36 19.896 -05 29 12.90 22.2w 538495 F51 C~332z 2019 04 08.49860 14 36 19.700 -05 29 12.45 21.7w 538495 F51 C~332z 2019 04 08.51117 14 36 19.481 -05 29 11.64 21.8w 538495 F51 C~332z 2019 04 08.52379 14 36 19.266 -05 29 10.97 21.8w 538495 F51 C~332z 2019 04 09.48386 14 36 03.854 -05 28 20.53 21.9w 538495 F51 C~332z 2019 04 09.49651 14 36 03.634 -05 28 19.36 21.8w 538495 F51 C~332z 2019 04 09.52187 14 36 03.237 -05 28 18.17 21.8w 538495 F51 C~332z
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 -0.01 0.00 0.02
2 0.0000 0.00 -0.08 0.00 0.02
3 0.0001 0.00 -0.07 0.00 0.03
4 0.0001 0.00 0.05 0.00 0.04
5 0.1092 0.00 -0.03 0.00 0.02
6 0.1092 0.00 0.12 0.00 0.17
7 0.9012 0.00 -0.06 0.00 0.04
8 0.9012 0.00 -0.06 0.00 -0.14
9 0.9366 0.00 -0.08 0.00 0.07
10 0.9366 0.00 -0.01 0.00 -0.23
11 1.0131 0.00 -0.13 0.00 0.07
12 1.0132 0.00 -0.26 0.00 -0.04
13 3.0911 0.00 0.61 0.00 -0.09
14 3.0911 0.00 -0.00 0.00 0.01
15 3.0912 0.00 -0.17 0.00 0.09
16 3.1327 0.00 -0.52 0.00 0.05
17 3.1354 0.00 0.09 0.00 -0.01
18 3.1382 0.00 -0.20 0.00 -0.13
19 3.2604 0.00 0.47 0.00 0.08
20 3.2604 0.00 0.11 0.00 -0.44
21 3.2604 0.00 0.20 0.00 -0.07
22 3.2604 0.00 0.14 0.00 0.01
23 3.3289 0.00 0.15 0.00 0.14
24 3.3672 0.00 0.14 0.00 0.06
25 3.3728 0.00 -0.22 0.00 0.14
26 3.3728 0.00 0.02 0.00 -0.07
27 3.3728 0.00 0.00 0.00 0.02
28 3.4056 0.00 0.07 0.00 -0.16
29 3.4056 0.00 0.07 0.00 -0.03
30 4.1097 0.00 -0.14 0.00 -0.14
31 4.1097 0.00 -0.06 0.00 0.03
32 4.1098 0.00 0.06 0.00 0.01
33 4.1944 0.00 0.06 0.00 0.14
34 4.1945 0.00 -0.10 0.00 0.05
35 4.1945 0.00 0.16 0.00 0.15
36 4.2135 0.00 -0.22 0.00 0.09
37 4.2135 0.00 -0.34 0.00 0.03
38 4.2135 0.00 -0.13 0.00 -0.06
39 4.2136 0.00 -0.18 0.00 0.11
40 4.2163 0.00 ( -1.99) 0.00 ( -1.37)
41 4.2217 0.00 -0.12 0.00 0.08
42 4.2217 0.00 0.02 0.00 -0.12
43 4.3013 0.00 -0.14 0.00 0.15
44 4.3013 0.00 0.01 0.00 0.11
45 4.3014 0.00 -0.04 0.00 0.18
46 4.3090 0.00 -0.32 0.00 0.47
47 4.3091 0.00 0.46 0.00 0.21
48 4.3091 0.00 0.24 0.00 0.53
49 4.3109 0.00 0.53 0.00 -0.00
50 4.3109 0.00 0.33 0.00 -0.09
51 4.3109 0.00 1.03 0.00 0.02
52 4.3109 0.00 0.08 0.00 0.13
53 4.3109 0.00 -0.26 0.00 0.34
54 4.3110 0.00 0.28 0.00 0.25
55 4.3112 0.00 -0.53 0.00 -0.17
56 4.3112 0.00 -0.17 0.00 -0.28
57 4.3112 0.00 -0.11 0.00 -0.19
58 4.3112 0.00 -0.06 0.00 -0.40
59 4.3112 0.00 0.29 0.00 -0.41
60 4.3112 0.00 0.05 0.00 -0.22
61 4.3113 0.00 -0.09 0.00 -0.19
62 4.3113 0.00 -0.19 0.00 -0.00
63 4.3113 0.00 -0.44 0.00 -0.11
64 4.3116 0.00 0.21 0.00 0.18
65 4.3116 0.00 0.20 0.00 0.65
66 4.3117 0.00 0.19 0.00 0.43
67 4.3550 0.00 -0.72 0.00 -0.38
68 4.3551 0.00 0.55 0.00 0.13
69 4.3579 0.00 0.70 0.00 0.64
70 4.3580 0.00 0.12 0.00 0.48
71 4.3581 0.00 0.05 0.00 0.56
72 4.4160 0.00 0.11 0.00 0.10
73 4.4161 0.00 -0.08 0.00 -0.20
74 4.4291 0.00 0.34 0.00 -0.12
75 4.4292 0.00 0.19 0.00 -0.13
76 4.4292 0.00 0.03 0.00 -0.25
77 4.4292 0.00 0.33 0.00 -0.67
78 4.4323 0.00 -0.16 0.00 0.09
79 4.4323 0.00 -0.17 0.00 0.00
80 4.4324 0.00 -0.31 0.00 -0.00
81 4.4324 0.00 -0.43 0.00 0.11
82 4.4405 0.00 0.01 0.00 0.01
83 4.4406 0.00 -0.08 0.00 -0.06
84 5.1939 0.00 0.04 0.00 -0.05
85 5.1940 0.00 -0.02 0.00 0.02
86 5.1940 0.00 -0.04 0.00 -0.08
87 5.1940 0.00 -0.11 0.00 -0.10
88 5.2130 0.00 0.14 0.00 0.07
89 5.2459 0.00 -0.47 0.00 0.11
90 5.2459 0.00 -0.22 0.00 0.12
91 5.2539 0.00 -0.11 0.00 0.16
92 5.2540 0.00 -0.29 0.00 0.22
93 5.2542 0.00 0.20 0.00 0.07
94 5.2543 0.00 0.16 0.00 0.15
95 5.2564 0.00 0.18 0.00 -0.60
96 5.2565 0.00 -0.32 0.00 -0.24
97 5.3249 0.00 -0.01 0.00 0.03
98 5.3250 0.00 -0.15 0.00 -0.25
99 5.3468 0.00 0.25 0.00 0.13
100 5.3469 0.00 0.24 0.00 0.05
101 6.2945 0.00 0.02 0.00 0.03
102 7.3567 0.00 0.12 0.00 0.24
103 7.3568 0.00 -0.01 0.00 -0.01
104 7.3568 0.00 -0.18 0.00 0.10
105 7.3704 0.00 0.16 0.00 0.10
106 7.3704 0.00 0.31 0.00 -0.12
107 7.3704 0.00 0.11 0.00 0.02
108 7.3705 0.00 -0.02 0.00 0.02
109 7.3731 0.00 -0.11 0.00 -0.41
110 7.3731 0.00 -0.27 0.00 0.09
111 7.3732 0.00 0.07 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.
538495 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 14.910 14.910 14.910 ecceobj 0.458 0.458 0.458 incobj 20.788 20.788 20.788 qmin 7.672 7.710 8.080 qmax 23.204 23.108 22.594 amean 15.164 14.851 15.104 amin 14.833 13.890 14.767 amax 15.573 15.594 15.460 emean 0.464 0.455 0.448 emin 0.445 0.434 0.416 emax 0.494 0.482 0.462 imean 19.768 20.543 20.732 imin 16.976 19.766 19.766 imax 20.853 21.170 21.419 excite_mean 0.574 0.574 0.571 fracstop 0.003 0.005 0.003 cjmean 3.164 3.196 3.173 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 115.7 143.3 122.5 kozaiamp 28.2 59.1 34.0