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: 558224 # Created Sun Dec 22 02:07:36 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 111 observations of 111 # Arc: 11.13y # First observation: 2012/12/22 # Last observation: 2024/02/09 # Chi-squared of fit: 125.97 DOF: 216 RMS: 0.19 # Min/Max residuals: -0.69 0.50 # Exact a, adot, b, bdot, g, gdot: 1.593179E-05 2.782479E-02 3.348056E-06 7.050578E-03 2.665185E-02 -1.979953E-03 # 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 11.831022 123.413856 0.526028 0.169902 -0.810735 2456284.041618 # Heliocentric elements and errors Epoch: 2456284.5000 = 2012/12/23 Mean Anomaly: 333.64428 +/- 0.000 Argument of Peri: 75.57467 +/- 0.000 Long of Asc Node: 84.48360 +/- 0.000 Inclination: 18.35456 +/- 0.000 Eccentricity: 0.15705428 +/- 0.0000 Semi-Major Axis: 44.30139323 +/- 0.0000 Time of Perihelion: 2464169.4118 +/- 0.0 Perihelion: 37.34367002 +/- 0.0000 Aphelion: 51.25911643 +/- 0.0000 Period (y) 294.8725 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -20.23935701 +/- 0.0000 Ecliptic Y 31.63707130 +/- 0.0000 Ecliptic Z 7.69284242 +/- 0.0000 Ecliptic XDOT -0.00220063 +/- 0.0000 Ecliptic YDOT -0.00186275 +/- 0.0000 Ecliptic ZDOT 0.00066732 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.33692313 +/- 0.0000 Geocenter to KBO 37.52092177 +/- 0.0000 # Hcoef: 6.46
The following table shows the complete astrometric record for 558224. 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 (558224) followed by the observatory code and reference code for the source of the astrometry.
2012 12 22.54084 08 35 35.581 +30 52 10.26 22.1w 558224 F51 C~401Z 2012 12 22.55493 08 35 35.507 +30 52 10.69 22.0w 558224 F51 C~401Z 2012 12 22.56901 08 35 35.459 +30 52 11.19 22.2w 558224 F51 C~401Z 2012 12 22.58306 08 35 35.387 +30 52 11.57 22.1w 558224 F51 C~401Z 2014 12 29.56604 08 50 30.399 +30 50 13.43 22.1w 558224 F51 C~1vXz 2014 12 29.57785 08 50 30.334 +30 50 13.78 22.1w 558224 F51 C~1vXz 2014 12 29.58963 08 50 30.272 +30 50 14.16 22.1w 558224 F51 C~1vXz 2014 12 29.60145 08 50 30.218 +30 50 14.55 22.2w 558224 F51 C~1vXz 2015 01 24.39861 08 48 08.093 +31 03 13.10 22.1w 558224 F51 C~1vXz 2015 01 24.41022 08 48 08.031 +31 03 13.70 22.0w 558224 F51 C~1vXz 2015 01 24.42195 08 48 07.956 +31 03 13.92 22.3w 558224 F51 C~1vXz 2015 01 27.52151 08 47 49.466 +31 04 34.91 22.3w 558224 F51 C~1vXz 2015 01 27.53312 08 47 49.386 +31 04 35.27 22.1w 558224 F51 C~1vXz 2015 01 27.54476 08 47 49.326 +31 04 35.54 22.0w 558224 F51 C~1vXz 2015 01 27.55642 08 47 49.245 +31 04 35.74 21.8w 558224 F51 C~1vXz 2015 02 12.294491 08 46 15.931 +31 10 24.64 21.4G 558224 F51 C~401Z 2015 02 12.307739 08 46 15.869 +31 10 25.12 22.4G 558224 F51 C~401Z 2015 02 12.321044 08 46 15.776 +31 10 25.45 21.8G 558224 F51 C~401Z 2015 02 12.334412 08 46 15.736 +31 10 25.60 21.7G 558224 F51 C~401Z 2015 02 13.293485 08 46 10.191 +31 10 42.97 22.7G 558224 F51 C~401Z 2015 02 13.306819 08 46 10.115 +31 10 42.83 21.7G 558224 F51 C~401Z 2015 02 13.320233 08 46 10.061 +31 10 43.20 22.2G 558224 F51 C~401Z 2015 02 13.333584 08 46 09.948 +31 10 43.51 22.5G 558224 F51 C~401Z 2015 03 24.370961 08 43 11.607 +31 15 30.37 21.8G 558224 F51 C~401Z 2015 03 24.383581 08 43 11.553 +31 15 30.33 22.0G 558224 F51 C~401Z 2015 03 24.396115 08 43 11.522 +31 15 30.16 21.9G 558224 F51 C~401Z 2015 03 24.408679 08 43 11.491 +31 15 30.11 21.8G 558224 F51 C~401Z 2016 01 02.636427 08 57 57.236 +30 47 09.13 22.1G 558224 F51 C~401Z 2016 01 14.517865 08 56 54.294 +30 53 32.93 22.4G 558224 F51 C~401Z 2016 01 14.531432 08 56 54.219 +30 53 33.45 22.2G 558224 F51 C~401Z 2016 01 14.558704 08 56 54.019 +30 53 34.78 23.1G 558224 F51 C~401Z 2016 01 17.364973 08 56 38.242 +30 55 00.31 22.1G 558224 F51 C~401Z 2016 01 17.376703 08 56 38.151 +30 55 00.76 22.1G 558224 F51 C~401Z 2016 01 17.388744 08 56 38.085 +30 55 01.28 22.1G 558224 F51 C~401Z 2016 01 17.400991 08 56 38.012 +30 55 01.40 22.4G 558224 F51 C~401Z 2016 01 29.398158 08 55 27.662 +31 00 42.83 21.9G 558224 F51 C~401Z 2016 01 29.409600 08 55 27.592 +31 00 43.61 21.3G 558224 F51 C~401Z 2016 01 29.421046 08 55 27.514 +31 00 43.65 21.2G 558224 F51 C~401Z 2016 02 04.317498 08 54 52.324 +31 03 11.66 22.5G 558224 F51 C~401Z 2016 02 04.329571 08 54 52.266 +31 03 12.06 22.7G 558224 F51 C~401Z 2016 02 04.341691 08 54 52.171 +31 03 12.31 22.1G 558224 F51 C~401Z 2016 02 04.353850 08 54 52.119 +31 03 12.41 22.1G 558224 F51 C~401Z 2016 02 13.288931 08 53 59.419 +31 06 26.17 21.7G 558224 F51 C~401Z 2016 02 13.299871 08 53 59.314 +31 06 26.94 22.0G 558224 F51 C~401Z 2016 02 13.310874 08 53 59.249 +31 06 27.02 22.4G 558224 F51 C~401Z 2016 02 13.321851 08 53 59.159 +31 06 26.74 22.3G 558224 F51 C~401Z 2016 11 08.597791 09 07 41.168 +30 12 22.19 22.2G 558224 F51 C~401Z 2016 11 08.599943 09 07 41.182 +30 12 22.39 22.2G 558224 F51 C~401Z 2016 11 08.609955 09 07 41.194 +30 12 22.55 22.5G 558224 F51 C~401Z 2016 11 08.610697 09 07 41.191 +30 12 22.51 22.4G 558224 F51 C~401Z 2016 11 08.621436 09 07 41.193 +30 12 22.77 22.3G 558224 F51 C~401Z 2016 11 08.632213 09 07 41.206 +30 12 23.08 22.2G 558224 F51 C~401Z 2017 01 31.520229 09 02 59.307 +30 55 44.38 22.3G 558224 F51 C~401Z 2017 01 31.530953 09 02 59.235 +30 55 44.71 22.2G 558224 F51 C~401a 2017 01 31.541690 09 02 59.177 +30 55 44.99 22.4G 558224 F51 C~401a 2017 01 31.552413 09 02 59.100 +30 55 45.25 22.0G 558224 F51 C~401a 2018 01 17.584239 09 12 10.432 +30 40 34.19 22.2G 558224 F51 C~401a 2018 01 17.595217 09 12 10.414 +30 40 34.46 22.4G 558224 F51 C~401a 2018 01 17.606180 09 12 10.335 +30 40 34.91 21.9G 558224 F51 C~401a 2018 01 17.617102 09 12 10.253 +30 40 35.35 22.0G 558224 F51 C~401a 2018 03 06.251620 09 07 39.847 +30 58 43.08 22.1G 558224 F51 C~401a 2018 03 06.262650 09 07 39.797 +30 58 43.17 22.1G 558224 F51 C~401a 2018 03 06.273678 09 07 39.719 +30 58 43.31 21.9G 558224 F51 C~401a 2018 03 06.284709 09 07 39.686 +30 58 43.56 22.1G 558224 F51 C~401a 2018 03 19.244974 09 06 42.080 +31 00 00.95 22.0G 558224 F51 C~401a 2018 12 16.623560 09 22 18.944 +30 11 24.63 23.3G 558224 F51 C~401a 2018 12 16.631814 09 22 18.910 +30 11 24.87 22.3G 558224 F51 C~401a 2018 12 16.640027 09 22 18.867 +30 11 25.32 22.6G 558224 F51 C~401a 2018 12 16.648225 09 22 18.874 +30 11 25.46 22.5G 558224 F51 C~401a 2019 01 07.564916 09 20 51.659 +30 24 34.46 22.2G 558224 F51 C~401a 2019 01 07.576201 09 20 51.607 +30 24 34.80 22.5G 558224 F51 C~401a 2019 01 07.587527 09 20 51.541 +30 24 35.30 22.0G 558224 F51 C~401a 2019 01 07.598892 09 20 51.492 +30 24 35.50 22.2G 558224 F51 C~401a 2019 01 08.422664 09 20 47.480 +30 25 04.96 22.4G 558224 F51 C~401a 2019 01 08.434951 09 20 47.415 +30 25 05.46 22.3G 558224 F51 C~401a 2019 01 08.447209 09 20 47.344 +30 25 05.92 21.9G 558224 F51 C~401a 2019 01 08.459565 09 20 47.282 +30 25 06.32 22.1G 558224 F51 C~401a 2019 01 17.422164 09 20 00.712 +30 30 19.50 22.3G 558224 F52 C~401a 2019 01 17.444058 09 20 00.589 +30 30 20.74 22.6G 558224 F52 C~401a 2019 01 25.390329 09 19 16.127 +30 34 42.59 22.2G 558224 F52 C~401a 2019 01 25.401237 09 19 16.032 +30 34 43.05 21.8G 558224 F52 C~401a 2019 11 28.575565 09 30 32.865 +29 49 07.30 21.5G 558224 F52 C~401a 2019 12 04.546051 09 30 26.668 +29 52 13.84 22.8G 558224 F51 C~401a 2019 12 04.559355 09 30 26.645 +29 52 14.20 22.8G 558224 F51 C~401a 2019 12 04.572695 09 30 26.618 +29 52 14.68 22.2G 558224 F51 C~401a 2019 12 04.586114 09 30 26.595 +29 52 15.02 22.1G 558224 F51 C~401a 2019 12 10.497338 09 30 16.384 +29 55 30.93 21.6G 558224 F51 C~401a 2019 12 10.509631 09 30 16.352 +29 55 31.62 21.9G 558224 F51 C~401a 2019 12 10.521821 09 30 16.325 +29 55 31.94 22.2G 558224 F51 C~401a 2019 12 10.534049 09 30 16.306 +29 55 32.30 22.2G 558224 F51 C~401a 2019 12 30.662913 09 29 13.647 +30 07 36.63 22.3G 558224 F51 C~401a 2020 01 24.406963 09 27 11.201 +30 22 26.01 21.5G 558224 F52 C~401a 2020 01 24.418236 09 27 11.114 +30 22 26.44 22.0G 558224 F52 C~401a 2020 01 24.429517 09 27 11.064 +30 22 26.60 22.4G 558224 F52 C~401a 2020 01 24.440835 09 27 11.011 +30 22 27.23 20.9G 558224 F52 C~401a 2020 01 31.396518 09 26 31.175 +30 26 11.65 21.7G 558224 F51 C~401a 2020 01 31.407975 09 26 31.091 +30 26 12.04 21.5G 558224 F51 C~401a 2020 01 31.419455 09 26 31.035 +30 26 12.74 21.2G 558224 F51 C~401a 2020 01 31.430887 09 26 30.927 +30 26 13.35 22.7G 558224 F51 C~401a 2021 03 20.148600 09 29 55.451 +30 28 52.99 22.2G 558224 G37 C~4i6K 2021 03 20.188700 09 29 55.288 +30 28 53.37 558224 G37 C~4i6K 2021 03 20.227860 09 29 55.106 +30 28 53.34 558224 G37 C~4i6K 2023 02 20.252160 09 47 56.111 +29 51 20.79 22.0G 558224 G37 C~6IlX 2023 02 20.302510 09 47 55.822 +29 51 22.18 558224 G37 C~6IlX 2023 02 20.355230 09 47 55.490 +29 51 23.48 558224 G37 C~6IlX 2024 01 08.98284 09 59 26.55 +29 08 08.4 22.4r 558224 O18 C~7llV 2024 01 08.98917 09 59 26.51 +29 08 08.7 22.7r 558224 O18 C~7llV 2024 01 08.99547 09 59 26.51 +29 08 08.8 21.7r 558224 O18 C~7llV 2024 02 09.394943 09 56 46.270 +29 27 39.36 22.3w 558224 F52 C~7uR4 2024 02 09.407860 09 56 46.168 +29 27 39.90 21.9w 558224 F52 C~7uR4 2024 02 09.433744 09 56 46.001 +29 27 40.57 22.4w 558224 F52 C~7uR4
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 0.19 0.00 0.14
2 0.0000 0.00 0.08 0.00 0.13
3 0.0001 0.00 0.36 0.00 0.20
4 0.0001 0.00 0.28 0.00 0.15
5 2.0179 0.00 0.13 0.00 0.04
6 2.0179 0.00 0.03 0.00 0.01
7 2.0179 0.00 -0.03 0.00 0.01
8 2.0180 0.00 0.03 0.00 0.02
9 2.0886 0.00 -0.26 0.00 -0.17
10 2.0886 0.00 -0.13 0.00 0.12
11 2.0887 0.00 -0.19 0.00 0.02
12 2.0971 0.00 0.06 0.00 0.08
13 2.0972 0.00 -0.08 0.00 0.14
14 2.0972 0.00 0.08 0.00 0.12
15 2.0972 0.00 -0.07 0.00 0.03
16 2.1403 0.00 -0.52 0.00 0.04
17 2.1404 0.00 -0.28 0.00 0.27
18 2.1404 0.00 -0.51 0.00 0.35
19 2.1404 0.00 0.07 0.00 0.25
20 2.1431 0.00 -0.19 0.00 0.10
21 2.1431 0.00 -0.17 0.00 -0.28
22 2.1431 0.00 0.20 0.00 -0.16
23 2.1432 0.00 -0.33 0.00 -0.09
24 2.2500 0.00 0.24 0.00 -0.07
25 2.2501 0.00 0.01 0.00 -0.06
26 2.2501 0.00 0.11 0.00 -0.18
27 2.2502 0.00 0.21 0.00 -0.18
28 3.0283 0.00 0.12 0.00 0.09
29 3.0609 0.00 -0.06 0.00 -0.09
30 3.0609 0.00 -0.02 0.00 0.01
31 3.0610 0.00 -0.69 0.00 0.50
32 3.0686 0.00 0.46 0.00 -0.23
33 3.0687 0.00 0.11 0.00 -0.14
34 3.0687 0.00 0.17 0.00 0.01
35 3.0687 0.00 0.14 0.00 -0.25
36 3.1016 0.00 -0.03 0.00 -0.20
37 3.1016 0.00 -0.04 0.00 0.28
38 3.1017 0.00 -0.17 0.00 0.01
39 3.1178 0.00 -0.07 0.00 0.02
40 3.1178 0.00 0.16 0.00 0.13
41 3.1179 0.00 -0.16 0.00 0.09
42 3.1179 0.00 0.16 0.00 -0.11
43 3.1424 0.00 0.39 0.00 -0.47
44 3.1424 0.00 -0.22 0.00 0.09
45 3.1424 0.00 -0.22 0.00 -0.05
46 3.1425 0.00 -0.60 0.00 -0.55
47 3.8797 0.00 -0.15 0.00 -0.03
48 3.8797 0.00 0.03 0.00 0.12
49 3.8797 0.00 0.09 0.00 0.05
50 3.8797 0.00 0.04 0.00 -0.00
51 3.8798 0.00 -0.07 0.00 0.01
52 3.8798 0.00 -0.00 0.00 0.08
53 4.1095 0.00 0.06 0.00 -0.04
54 4.1095 0.00 -0.05 0.00 0.01
55 4.1095 0.00 0.06 0.00 0.01
56 4.1095 0.00 -0.13 0.00 -0.01
57 5.0706 0.00 -0.21 0.00 0.00
58 5.0706 0.00 0.45 0.00 -0.08
59 5.0707 0.00 0.20 0.00 0.01
60 5.0707 0.00 -0.11 0.00 0.10
61 5.2011 0.00 0.06 0.00 -0.18
62 5.2012 0.00 0.14 0.00 -0.21
63 5.2012 0.00 -0.21 0.00 -0.18
64 5.2012 0.00 0.13 0.00 -0.05
65 5.2367 0.00 -0.04 0.00 -0.44
66 5.9824 0.00 0.06 0.00 -0.04
67 5.9825 0.00 -0.07 0.00 -0.09
68 5.9825 0.00 -0.34 0.00 0.08
69 5.9825 0.00 0.14 0.00 -0.07
70 6.0425 0.00 0.05 0.00 0.09
71 6.0425 0.00 0.12 0.00 0.03
72 6.0426 0.00 -0.03 0.00 0.12
73 6.0426 0.00 0.08 0.00 -0.08
74 6.0449 0.00 0.18 0.00 -0.08
75 6.0449 0.00 0.13 0.00 -0.02
76 6.0449 0.00 -0.01 0.00 -0.00
77 6.0450 0.00 -0.01 0.00 -0.05
78 6.0695 0.00 0.10 0.00 -0.35
79 6.0696 0.00 0.07 0.00 0.14
80 6.0913 0.00 0.41 0.00 -0.18
81 6.0913 0.00 -0.06 0.00 -0.07
82 6.9323 0.00 -0.20 0.00 -0.54
83 6.9487 0.00 0.13 0.00 0.12
84 6.9487 0.00 0.08 0.00 0.04
85 6.9488 0.00 -0.03 0.00 0.09
86 6.9488 0.00 -0.07 0.00 -0.00
87 6.9650 0.00 0.08 0.00 -0.07
88 6.9650 0.00 -0.00 0.00 0.19
89 6.9650 0.00 -0.01 0.00 0.09
90 6.9651 0.00 0.10 0.00 0.03
91 7.0202 0.00 0.23 0.00 0.00
92 7.0879 0.00 0.01 0.00 0.11
93 7.0880 0.00 -0.32 0.00 0.16
94 7.0880 0.00 -0.11 0.00 -0.06
95 7.0880 0.00 0.07 0.00 0.19
96 7.1071 0.00 0.26 0.00 -0.13
97 7.1071 0.00 0.01 0.00 -0.10
98 7.1071 0.00 0.19 0.00 0.25
99 7.1072 0.00 -0.41 0.00 0.50
100 8.2399 0.00 -0.01 0.00 -0.03
101 8.2400 0.00 0.16 0.00 0.16
102 8.2401 0.00 -0.01 0.00 -0.05
103 10.1621 0.00 0.09 0.00 -0.11
104 10.1622 0.00 0.20 0.00 -0.01
105 10.1624 0.00 -0.14 0.00 -0.05
106 11.0457 0.00 -0.05 0.00 0.17
107 11.0457 0.00 -0.25 0.00 0.22
108 11.0457 0.00 0.15 0.00 0.07
109 11.1317 0.00 0.33 0.00 -0.05
110 11.1317 0.00 -0.07 0.00 0.07
111 11.1318 0.00 -0.31 0.00 -0.11
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.
558224 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 44.231 44.231 44.231 ecceobj 0.154 0.154 0.154 incobj 18.349 18.349 18.349 qmin 36.724 36.721 36.692 qmax 51.894 51.934 51.963 amean 44.135 44.135 44.135 amin 43.767 43.774 43.772 amax 44.552 44.561 44.549 emean 0.150 0.150 0.150 emin 0.134 0.134 0.134 emax 0.166 0.166 0.167 imean 16.896 16.895 16.896 imin 16.326 16.324 16.327 imax 17.486 17.488 17.485 excite_mean 0.327 0.327 0.327 fracstop 1.000 1.000 1.000 cjmean 2.973 2.973 2.973 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 177.6 177.6 177.6 kozaiamp 180.0 179.9 180.0