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: 578997 # Created Sun Dec 22 02:07:39 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 109 observations of 109 # Arc: 11.33y # First observation: 2010/02/28 # Last observation: 2021/06/28 # Chi-squared of fit: 95.23 DOF: 212 RMS: 0.17 # Min/Max residuals: -0.82 0.42 # Exact a, adot, b, bdot, g, gdot: 2.441591E-05 4.819220E-02 2.239213E-06 -1.987870E-03 3.607848E-02 1.244853E-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 28.722733 -125.669011 0.959444 0.127022 -0.231859 2455256.150836 # Heliocentric elements and errors Epoch: 2455256.5000 = 2010/03/01 Mean Anomaly: 18.53958 +/- 0.000 Argument of Peri: 47.33960 +/- 0.000 Long of Asc Node: 139.64553 +/- 0.000 Inclination: 28.46670 +/- 0.000 Eccentricity: 0.40284049 +/- 0.0000 Semi-Major Axis: 42.92126824 +/- 0.0000 Time of Perihelion: 2449967.1213 +/- 0.0 Perihelion: 25.63084341 +/- 0.0000 Aphelion: 60.21169307 +/- 0.0000 Period (y) 281.2011 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -15.10252757 +/- 0.0000 Ecliptic Y -19.40518055 +/- 0.0000 Ecliptic Z 13.32024955 +/- 0.0000 Ecliptic XDOT 0.00244812 +/- 0.0000 Ecliptic YDOT -0.00285859 +/- 0.0000 Ecliptic ZDOT 0.00032163 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 27.96549946 +/- 0.0000 Geocenter to KBO 27.71723699 +/- 0.0000 # Hcoef: 7.91
The following table shows the complete astrometric record for 578997. 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 (578997) followed by the observatory code and reference code for the source of the astrometry.
2010 02 28.65007 15 55 15.338 +09 03 47.60 21.6G 578997 F51 C~346Y 2010 06 04.34213 15 48 06.002 +10 10 35.14 22.0G 578997 F51 C~346Y 2010 06 04.35393 15 48 05.926 +10 10 35.17 22.5G 578997 F51 C~346Y 2011 04 28.59625 16 03 02.255 +09 10 56.13 22.1G 578997 F51 C~346Y 2011 05 20.38233 16 00 43.447 +09 21 41.13 21.7G 578997 F51 C~346Y 2012 04 24.58172 16 13 56.063 +08 22 00.19 22.2G 578997 F51 C~346Y 2012 04 24.59253 16 13 56.012 +08 22 00.56 22.2G 578997 F51 C~346Y 2012 06 15.38555 16 08 28.862 +08 37 13.00 22.6G 578997 F51 C~346Y 2012 06 15.39916 16 08 28.782 +08 37 12.97 22.5G 578997 F51 C~346Y 2012 06 15.41275 16 08 28.681 +08 37 12.92 22.5G 578997 F51 C~346Y 2012 06 15.42643 16 08 28.598 +08 37 12.70 22.5G 578997 F51 C~346Y 2013 02 15.62573 16 25 40.441 +06 37 20.73 23.6G 578997 F51 C~346Y 2013 02 15.63958 16 25 40.491 +06 37 21.59 22.9G 578997 F51 C~346Y 2013 06 26.40886 16 17 47.273 +07 48 29.63 22.3G 578997 F51 C~346Y 2013 07 03.34008 16 17 10.746 +07 45 47.90 22.8G 578997 F51 C~346Y 2013 07 03.36440 16 17 10.624 +07 45 47.37 22.2G 578997 F51 C~346Y 2014 05 09.45210 16 32 54.214 +06 57 36.20 22.1G 578997 F51 C~346Y 2014 05 09.53903 16 32 53.673 +06 57 38.42 22.4G 578997 F51 C~346Y 2014 05 09.55115 16 32 53.622 +06 57 39.08 22.7G 578997 F51 C~346Y 2014 05 09.56326 16 32 53.534 +06 57 39.62 21.7G 578997 F51 C~346Y 2014 05 09.57542 16 32 53.462 +06 57 39.86 21.5G 578997 F51 C~346Y 2014 05 21.49377 16 31 39.297 +07 02 28.31 23.2G 578997 F51 C~346Y 2014 05 21.50516 16 31 39.207 +07 02 28.58 22.4G 578997 F51 C~346Y 2014 05 21.51649 16 31 39.154 +07 02 28.69 22.2G 578997 F51 C~346Y 2014 05 27.42596 16 31 00.860 +07 04 02.34 22.3G 578997 F51 C~346Y 2014 06 08.51779 16 29 42.198 +07 05 24.12 21.9G 578997 F51 C~346Y 2014 06 22.43472 16 28 15.855 +07 03 50.65 23.6G 578997 F51 C~346Y 2014 06 28.37832 16 27 41.845 +07 02 09.76 22.6G 578997 F51 C~346Y 2014 06 28.38986 16 27 41.779 +07 02 09.43 22.2G 578997 F51 C~346Y 2014 06 28.40140 16 27 41.722 +07 02 09.33 22.2G 578997 F51 C~346Y 2014 06 28.41296 16 27 41.652 +07 02 09.10 22.2G 578997 F51 C~346Y 2014 07 02.40461 16 27 20.129 +07 00 41.28 22.5G 578997 F51 C~346Y 2014 08 20.26281 16 25 04.781 +06 24 45.47 22.6G 578997 F51 C~346Y 2014 08 20.27491 16 25 04.780 +06 24 44.81 22.7G 578997 F51 C~346Y 2014 08 20.28702 16 25 04.769 +06 24 44.02 23.0G 578997 F51 C~346Y 2014 08 20.29913 16 25 04.787 +06 24 43.37 22.3G 578997 F51 C~346Y 2015 03 23.57294 16 45 35.679 +05 37 44.96 22.9G 578997 F51 C~346Y 2015 05 13.53214 16 42 18.336 +06 13 23.29 22.5G 578997 F51 C~346Y 2015 05 14.47631 16 42 12.649 +06 13 48.08 23.0G 578997 F51 C~346Y 2015 06 20.31675 16 38 19.247 +06 18 42.46 22.3G 578997 F51 C~346Y 2015 06 20.32938 16 38 19.173 +06 18 42.37 22.8G 578997 F51 C~346Y 2015 06 20.34208 16 38 19.093 +06 18 42.21 22.5G 578997 F51 C~346Y 2015 06 20.35476 16 38 19.021 +06 18 42.16 22.8G 578997 F51 C~346Y 2015 08 17.27957 16 34 42.093 +05 44 02.19 22.9G 578997 F51 C~346Y 2015 08 17.31545 16 34 42.053 +05 44 00.11 22.5G 578997 F51 C~346Y 2015 08 17.32773 16 34 42.033 +05 43 59.10 22.2G 578997 F51 C~346Y 2016 02 24.64588 16 54 25.257 +04 31 41.03 23.1G 578997 F51 C~346Y 2016 03 19.61240 16 54 56.491 +04 50 39.96 23.1G 578997 F51 C~346Y 2016 04 02.54635 16 54 39.315 +05 01 58.93 22.6G 578997 F51 C~346Y 2016 04 02.55944 16 54 39.285 +05 01 59.50 23.2G 578997 F51 C~346Y 2016 04 02.57260 16 54 39.260 +05 01 59.95 23.1G 578997 F51 C~346Y 2016 04 10.58699 16 54 18.380 +05 08 13.84 23.5G 578997 F51 C~346Y 2016 04 10.59889 16 54 18.320 +05 08 14.05 23.5G 578997 F51 C~346Y 2016 04 10.61077 16 54 18.295 +05 08 14.90 22.8G 578997 F51 C~346Y 2016 04 10.62261 16 54 18.280 +05 08 15.25 22.2G 578997 F51 C~346Y 2016 05 06.52250 16 52 25.191 +05 25 00.17 22.1G 578997 F51 C~346Y 2016 05 06.53456 16 52 25.134 +05 25 00.60 22.4G 578997 F51 C~346Y 2016 05 06.54641 16 52 25.061 +05 25 00.98 22.7G 578997 F51 C~346Y 2016 05 06.55831 16 52 24.994 +05 25 01.30 22.7G 578997 F51 C~346Y 2016 05 13.50480 16 51 45.601 +05 28 15.90 22.5G 578997 F51 C~346Y 2016 05 13.51747 16 51 45.537 +05 28 16.41 22.3G 578997 F51 C~346Y 2016 05 13.53015 16 51 45.468 +05 28 16.93 22.4G 578997 F51 C~346Z 2016 05 13.54289 16 51 45.377 +05 28 17.06 22.4G 578997 F51 C~346Z 2016 05 15.59726 16 51 33.198 +05 29 07.45 17.8G 578997 F51 C~346Z 2016 06 03.47451 16 49 35.018 +05 33 53.90 22.0G 578997 F51 C~346Z 2016 06 03.48568 16 49 34.937 +05 33 54.06 21.9G 578997 F51 C~346Z 2016 06 03.49686 16 49 34.866 +05 33 54.05 22.2G 578997 F51 C~346Z 2016 06 03.50806 16 49 34.788 +05 33 54.11 22.3G 578997 F51 C~346Z 2016 06 23.44253 16 47 29.893 +05 32 49.67 22.6G 578997 F51 C~346Z 2016 07 05.39436 16 46 22.604 +05 29 07.55 22.4G 578997 F51 C~346Z 2016 07 05.40642 16 46 22.540 +05 29 07.19 22.8G 578997 F51 C~346Z 2016 07 05.41845 16 46 22.483 +05 29 06.92 22.9G 578997 F51 C~346Z 2017 04 09.58196 17 03 30.793 +04 23 04.58 22.9G 578997 F51 C~346Z 2017 04 20.53841 17 02 54.899 +04 30 46.62 22.9G 578997 F51 C~346Z 2017 04 27.53744 17 02 25.552 +04 35 12.77 23.1G 578997 F51 C~346Z 2017 04 27.55008 17 02 25.475 +04 35 13.29 23.4G 578997 F51 C~346Z 2017 04 27.56270 17 02 25.433 +04 35 13.58 23.0G 578997 F51 C~346Z 2017 04 27.57534 17 02 25.349 +04 35 14.18 22.9G 578997 F51 C~346Z 2017 05 18.58398 17 00 33.826 +04 45 22.07 22.8G 578997 F51 C~346Z 2017 05 26.47653 16 59 45.765 +04 47 41.35 20.1G 578997 F51 C~346Z 2017 05 26.48854 16 59 45.709 +04 47 41.97 22.1G 578997 F51 C~346Z 2017 05 26.50058 16 59 45.615 +04 47 42.08 22.5G 578997 F51 C~346Z 2017 05 26.51263 16 59 45.535 +04 47 42.52 23.0G 578997 F51 C~346Z 2017 06 21.40953 16 57 02.771 +04 48 45.00 21.6G 578997 F51 C~346Z 2017 06 21.42165 16 57 02.696 +04 48 44.41 21.6G 578997 F51 C~346Z 2017 06 21.44582 16 57 02.524 +04 48 44.88 22.0G 578997 F51 C~346Z 2017 06 25.34932 16 56 39.059 +04 47 59.41 22.4G 578997 F51 C~346Z 2017 06 25.36210 16 56 38.991 +04 47 59.34 23.0G 578997 F51 C~346Z 2017 06 25.37488 16 56 38.902 +04 47 59.05 22.6G 578997 F51 C~346Z 2017 06 25.38759 16 56 38.849 +04 47 58.84 23.3G 578997 F51 C~346Z 2018 04 16.57021 17 12 05.777 +03 44 24.29 22.8G 578997 F51 C~346Z 2018 04 16.58238 17 12 05.721 +03 44 24.47 22.6G 578997 F51 C~346Z 2018 04 16.59453 17 12 05.642 +03 44 25.08 22.7G 578997 F51 C~346Z 2018 04 16.60671 17 12 05.613 +03 44 25.18 23.8G 578997 F51 C~346Z 2018 05 23.49192 17 09 08.568 +04 02 52.32 22.4G 578997 F51 C~346Z 2018 05 23.50421 17 09 08.481 +04 02 52.62 23.3G 578997 F51 C~346Z 2018 05 23.51641 17 09 08.419 +04 02 52.39 23.6G 578997 F51 C~346Z 2018 05 23.52875 17 09 08.346 +04 02 52.77 22.7G 578997 F51 C~346Z 2018 06 08.45845 17 07 29.706 +04 05 34.57 22.9G 578997 F51 C~346Z 2018 06 08.46979 17 07 29.640 +04 05 34.59 22.7G 578997 F51 C~346Z 2018 06 08.48054 17 07 29.568 +04 05 34.59 22.3G 578997 F51 C~346Z 2018 06 08.49127 17 07 29.494 +04 05 34.71 22.5G 578997 F51 C~346Z 2018 06 15.42483 17 06 45.921 +04 05 34.72 22.9G 578997 F51 C~346Z 2018 06 15.43685 17 06 45.847 +04 05 34.61 22.5G 578997 F51 C~346Z 2018 06 15.44882 17 06 45.779 +04 05 34.65 22.8G 578997 F51 C~346Z 2018 06 15.46074 17 06 45.695 +04 05 34.52 22.6G 578997 F51 C~346Z 2021 06 28.312742 17 31 15.408 +01 57 43.68 22.8w 578997 F51 C~4qNe 2021 06 28.322113 17 31 15.352 +01 57 43.22 22.9w 578997 F51 C~4qNe 2021 06 28.331475 17 31 15.303 +01 57 43.56 22.5w 578997 F51 C~4qNe
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 -0.82 0.00 -0.46
2 0.2620 0.00 0.16 0.00 0.06
3 0.2620 0.00 0.18 0.00 0.09
4 1.1607 0.00 0.09 0.00 0.16
5 1.2203 0.00 0.17 0.00 -0.05
6 2.1518 0.00 -0.08 0.00 -0.13
7 2.1518 0.00 0.06 0.00 -0.21
8 2.2936 0.00 0.14 0.00 -0.14
9 2.2936 0.00 0.20 0.00 -0.03
10 2.2937 0.00 -0.05 0.00 0.05
11 2.2937 0.00 -0.03 0.00 -0.03
12 2.9650 0.00 0.07 0.00 -0.05
13 2.9651 0.00 0.16 0.00 0.16
14 3.3231 0.00 0.22 0.00 0.05
15 3.3421 0.00 0.02 0.00 -0.07
16 3.3421 0.00 0.05 0.00 0.05
17 4.1911 0.00 -0.06 0.00 0.10
18 4.1913 0.00 -0.24 0.00 -0.24
19 4.1914 0.00 0.10 0.00 0.06
20 4.1914 0.00 -0.11 0.00 0.24
21 4.1914 0.00 -0.08 0.00 0.12
22 4.2241 0.00 0.14 0.00 -0.13
23 4.2241 0.00 -0.10 0.00 -0.07
24 4.2241 0.00 0.22 0.00 -0.17
25 4.2403 0.00 -0.03 0.00 -0.10
26 4.2734 0.00 0.32 0.00 0.15
27 4.3115 0.00 -0.33 0.00 0.14
28 4.3278 0.00 -0.12 0.00 0.09
29 4.3278 0.00 -0.13 0.00 -0.01
30 4.3279 0.00 -0.01 0.00 0.13
31 4.3279 0.00 -0.08 0.00 0.13
32 4.3388 0.00 0.02 0.00 0.18
33 4.4726 0.00 0.07 0.00 0.02
34 4.4726 0.00 0.04 0.00 0.08
35 4.4727 0.00 -0.13 0.00 0.01
36 4.4727 0.00 0.13 0.00 0.08
37 5.0621 0.00 0.13 0.00 -0.01
38 5.2016 0.00 0.20 0.00 -0.29
39 5.2042 0.00 0.01 0.00 0.17
40 5.3050 0.00 -0.10 0.00 -0.02
41 5.3051 0.00 -0.03 0.00 0.02
42 5.3051 0.00 -0.05 0.00 -0.01
43 5.3051 0.00 0.04 0.00 0.07
44 5.4637 0.00 0.13 0.00 0.30
45 5.4638 0.00 -0.11 0.00 0.23
46 5.4639 0.00 -0.28 0.00 -0.09
47 5.9877 0.00 -0.11 0.00 0.12
48 6.0533 0.00 0.21 0.00 0.27
49 6.0914 0.00 -0.07 0.00 -0.04
50 6.0915 0.00 -0.08 0.00 -0.10
51 6.0915 0.00 -0.01 0.00 -0.28
52 6.1134 0.00 0.12 0.00 0.09
53 6.1135 0.00 -0.21 0.00 -0.24
54 6.1135 0.00 -0.01 0.00 0.07
55 6.1135 0.00 0.33 0.00 -0.11
56 6.1845 0.00 -0.07 0.00 -0.10
57 6.1845 0.00 0.08 0.00 -0.04
58 6.1845 0.00 -0.02 0.00 -0.03
59 6.1846 0.00 -0.03 0.00 -0.07
60 6.2036 0.00 -0.00 0.00 -0.09
61 6.2036 0.00 0.18 0.00 0.10
62 6.2036 0.00 0.28 0.00 0.30
63 6.2037 0.00 0.06 0.00 0.11
64 6.2093 0.00 -0.16 0.00 0.42
65 6.2610 0.00 0.16 0.00 -0.06
66 6.2610 0.00 0.04 0.00 0.03
67 6.2610 0.00 0.07 0.00 -0.06
68 6.2611 0.00 0.00 0.00 -0.07
69 6.3157 0.00 -0.20 0.00 0.13
70 6.3484 0.00 -0.03 0.00 0.15
71 6.3484 0.00 -0.02 0.00 0.08
72 6.3484 0.00 0.09 0.00 0.11
73 7.1100 0.00 0.08 0.00 0.11
74 7.1400 0.00 -0.24 0.00 -0.15
75 7.1592 0.00 0.28 0.00 -0.03
76 7.1592 0.00 0.00 0.00 0.03
77 7.1592 0.00 0.25 0.00 -0.13
78 7.1593 0.00 -0.13 0.00 0.01
79 7.2168 0.00 -0.16 0.00 0.03
80 7.2384 0.00 -0.09 0.00 -0.61
81 7.2384 0.00 0.21 0.00 -0.16
82 7.2385 0.00 -0.05 0.00 -0.23
83 7.2385 0.00 -0.11 0.00 0.04
84 7.3094 0.00 0.10 0.00 0.10
85 7.3094 0.00 0.10 0.00 -0.37
86 7.3095 0.00 -0.23 0.00 0.34
87 7.3202 0.00 -0.16 0.00 0.01
88 7.3202 0.00 -0.02 0.00 0.11
89 7.3203 0.00 -0.20 0.00 -0.00
90 7.3203 0.00 0.16 0.00 -0.04
91 8.1285 0.00 0.31 0.00 0.23
92 8.1285 0.00 0.07 0.00 -0.08
93 8.1285 0.00 -0.51 0.00 0.04
94 8.1286 0.00 -0.35 0.00 -0.35
95 8.2295 0.00 0.01 0.00 0.13
96 8.2296 0.00 -0.17 0.00 0.22
97 8.2296 0.00 0.02 0.00 -0.21
98 8.2296 0.00 0.05 0.00 -0.04
99 8.2733 0.00 -0.06 0.00 -0.02
100 8.2733 0.00 0.04 0.00 -0.04
101 8.2733 0.00 -0.01 0.00 -0.07
102 8.2734 0.00 -0.08 0.00 0.02
103 8.2923 0.00 -0.09 0.00 0.04
104 8.2924 0.00 -0.05 0.00 -0.03
105 8.2924 0.00 0.07 0.00 0.05
106 8.2924 0.00 -0.05 0.00 -0.04
107 11.3283 0.00 0.02 0.00 0.07
108 11.3283 0.00 0.02 0.00 -0.27
109 11.3284 0.00 0.13 0.00 0.19
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.
578997 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 42.614 42.614 42.614 ecceobj 0.399 0.399 0.399 incobj 28.481 28.481 28.481 qmin 25.475 25.475 25.475 qmax 61.256 61.256 62.521 amean 42.905 43.015 43.463 amin 42.316 42.401 42.600 amax 43.473 43.554 44.441 emean 0.393 0.398 0.397 emin 0.375 0.387 0.382 emax 0.409 0.409 0.409 imean 27.667 27.476 27.716 imin 27.021 27.021 27.021 imax 28.372 27.807 28.389 excite_mean 0.608 0.609 0.611 fracstop 0.012 0.009 0.013 cjmean 2.654 2.654 2.653 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 48.7 48.8 47.1 kozaiamp 2.1 2.4 2.0