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: 309741
# Created Sun Dec 22 02:07:02 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 102 observations of 102
# Arc: 4.30y
# First observation: 2008/10/22
# Last observation: 2013/02/09
# Chi-squared of fit: 501.58 DOF: 198 RMS: 0.39
# Min/Max residuals: -1.59 1.19
# Exact a, adot, b, bdot, g, gdot:
2.844082E-05 1.832583E-01 -2.202968E-05 -1.283565E-01 9.668340E-02 -4.463003E-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
8.481215 51.685656 0.378267 0.135911 -0.911242 2454761.745284
# Heliocentric elements and errors
Epoch: 2454762.5000 = 2008/10/23
Mean Anomaly: 353.44214 +/- 0.000
Argument of Peri: 199.64737 +/- 0.000
Long of Asc Node: 240.62925 +/- 0.000
Inclination: 35.85148 +/- 0.000
Eccentricity: 0.61191720 +/- 0.0000
Semi-Major Axis: 27.23285199 +/- 0.0000
Time of Perihelion: 2455708.0792 +/- 0.0
Perihelion: 10.56860144 +/- 0.0000
Aphelion: 43.89710253 +/- 0.0000
Period (y) 142.1176 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 7.21180015 +/- 0.0000
Ecliptic Y 8.51049613 +/- 0.0000
Ecliptic Z 1.52522615 +/- 0.0000
Ecliptic XDOT -0.00450840 +/- 0.0000
Ecliptic YDOT 0.00265952 +/- 0.0000
Ecliptic ZDOT -0.00378152 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 11.25907485 +/- 0.0000
Geocenter to KBO 10.34314121 +/- 0.0000
# Hcoef: 10.69
The following table shows the complete astrometric record for 309741. 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 (309741) followed by the observatory code and reference code for the source of the astrometry.
2008 10 22.24453 03 07 15.68 +26 21 35.2 20.9V 309741 691 C~00Sz 2008 10 22.26220 03 07 15.39 +26 21 33.0 21.3V 309741 691 C~00Sz 2008 10 22.27988 03 07 15.16 +26 21 31.2 21.1V 309741 691 C~00Sz 2008 10 23.45766 03 06 57.98 +26 19 18.4 21.2V 309741 291 C~00Sz 2008 10 23.47497 03 06 57.73 +26 19 16.4 21.2V 309741 291 C~00Sz 2008 10 23.48885 03 06 57.53 +26 19 15.0 21.3V 309741 291 C~00Sz 2008 10 24.45182 03 06 43.48 +26 17 25.1 20.3V 309741 291 C~00Sz 2008 10 24.46612 03 06 43.20 +26 17 24.0 309741 291 C~00Sz 2008 10 25.04253 03 06 34.65 +26 16 16.2 309741 J95 C~00Sz 2008 10 25.18522 03 06 32.48 +26 16 00.5 20.5R 309741 J95 C~00Sz 2008 10 25.281018 03 06 31.19 +26 15 49.1 21.1 309741 H55 C~00Sz 2008 10 25.291846 03 06 31.01 +26 15 48.2 20.9 309741 H55 C~00Sz 2008 10 25.302255 03 06 30.86 +26 15 47.0 20.9 309741 H55 C~00Sz 2008 10 25.53653 03 06 27.30 +26 15 19.8 20.7R 309741 D35 C~00Sz 2008 10 25.93125 03 06 21.47 +26 14 32.2 21.3R 309741 A99 C~00Sz 2008 10 25.93587 03 06 21.41 +26 14 31.7 21.2R 309741 A99 C~00Sz 2008 10 25.94712 03 06 21.24 +26 14 30.9 21.1R 309741 A99 C~00Sz 2008 10 25.96045 03 06 21.05 +26 14 29.0 21.2R 309741 A99 C~00Sz 2008 10 25.96353 03 06 21.00 +26 14 29.1 21.0R 309741 A99 C~00Sz 2008 10 25.96489 03 06 20.94 +26 14 28.7 21.0R 309741 A99 C~00Sz 2008 10 26.09546 03 06 19.00 +26 14 13.6 20.8R 309741 204 C~00tM 2008 10 26.22439 03 06 17.12 +26 13 59.9 309741 291 C~00Sz 2008 10 26.23947 03 06 16.89 +26 13 57.8 309741 291 C~00Sz 2008 10 26.25480 03 06 16.53 +26 13 56.2 309741 291 C~00Sz 2008 10 26.31643 03 06 15.71 +26 13 48.1 21.0R 309741 H01 C~00Sz 2008 10 26.32014 03 06 15.66 +26 13 47.7 21.0R 309741 H01 C~00Sz 2008 10 26.32748 03 06 15.55 +26 13 46.8 20.8R 309741 H01 C~00Sz 2008 10 26.36852 03 06 14.92 +26 13 41.8 21.2R 309741 673 C~00Sz 2008 10 26.38241 03 06 14.71 +26 13 40.2 309741 673 C~00Sz 2008 10 26.39167 03 06 14.55 +26 13 39.2 309741 673 C~00Sz 2008 10 26.39838 03 06 14.46 +26 13 38.3 309741 673 C~00Sz 2008 10 27.19485 03 06 02.47 +26 12 04.1 21.8V 309741 291 C~00Sz 2008 10 27.20260 03 06 02.35 +26 12 03.2 21.5V 309741 291 C~00Sz 2008 10 27.21034 03 06 02.23 +26 12 02.1 21.5V 309741 291 C~00Sz 2008 10 27.42706 03 05 58.93 +26 11 36.1 20.2R 309741 H01 C~00Sz 2008 10 27.43088 03 05 58.88 +26 11 35.6 20.4R 309741 H01 C~00Sz 2008 10 27.44009 03 05 58.73 +26 11 34.6 20.3R 309741 H01 C~00Sz 2008 10 27.44623 03 05 58.62 +26 11 33.8 20.4R 309741 H01 C~00Sz 2008 11 21.13226 02 59 31.16 +25 15 58.5 309741 291 C~01O0 2008 11 21.14537 02 59 30.96 +25 15 56.7 309741 291 C~01O0 2008 11 21.15857 02 59 30.78 +25 15 54.9 309741 291 C~01O0 2008 11 24.32962 02 58 42.59 +25 08 07.5 21.1V 309741 291 C~01gp 2008 11 24.33822 02 58 42.47 +25 08 06.1 21.7V 309741 291 C~01gp 2008 12 27.76497 02 52 21.84 +23 46 46.9 20.5R 309741 461 C~03Jo 2008 12 28.18943 02 52 18.99 +23 45 49.9 21.4R 309741 688 C~02hT 2008 12 28.22032 02 52 18.78 +23 45 45.6 309741 688 C~02hT 2008 12 29.83893 02 52 08.76 +23 42 09.5 21. R 309741 461 C~03Jo 2008 12 30.14745 02 52 07.03 +23 41 29.1 309741 675 C~02hT 2008 12 30.25820 02 52 06.37 +23 41 13.9 309741 675 C~02hT 2009 08 10.42610 04 01 11.81 +22 47 26.0 309741 291 C~09yu 2009 08 10.44241 04 01 12.08 +22 47 25.4 22.0V 309741 291 C~09yu 2009 08 10.45854 04 01 12.21 +22 47 25.4 309741 291 C~09yu 2009 10 14.45818 04 02 59.30 +21 38 47.9 309741 291 C~09yu 2009 10 14.47600 04 02 59.14 +21 38 46.6 309741 291 C~09yu 2009 10 14.49390 04 02 58.94 +21 38 44.9 309741 291 C~09yu 2009 10 24.41494 04 01 05.47 +21 20 38.3 309741 691 C~0Abe 2009 10 24.43213 04 01 05.27 +21 20 36.5 309741 691 C~0Abe 2009 10 24.44930 04 01 05.02 +21 20 34.5 309741 691 C~0Abe 2009 10 26.28924 04 00 41.27 +21 17 02.5 309741 291 C~0Abe 2009 10 26.30168 04 00 41.03 +21 17 00.9 309741 291 C~0Abe 2009 10 26.31203 04 00 40.87 +21 16 59.7 309741 291 C~0Abe 2009 11 24.18361 03 53 15.59 +20 16 12.7 21.7V 309741 691 C~0BiG 2009 11 24.20139 03 53 15.31 +20 16 10.2 21.4V 309741 691 C~0BiG 2009 11 24.21918 03 53 14.98 +20 16 08.1 21.6V 309741 691 C~0BiG 2009 12 11.21490 03 48 45.86 +19 39 03.8 20.8V 309741 G96 C~0C9G 2009 12 11.22003 03 48 45.79 +19 39 03.2 21.1V 309741 G96 C~0C9G 2009 12 11.22517 03 48 45.72 +19 39 02.8 21.1V 309741 G96 C~0C9G 2009 12 11.23034 03 48 45.64 +19 39 01.8 21.5V 309741 G96 C~0C9G 2010 09 17.44905 04 56 06.11 +16 19 06.5 21.9V 309741 291 C~0Mug 2010 09 17.47316 04 56 06.22 +16 19 03.5 309741 291 C~0Mug 2010 09 17.49749 04 56 06.34 +16 19 00.4 309741 291 C~0Mug 2010 11 17.31725 04 49 12.32 +14 14 41.1 21.2V 309741 291 C~0PMi 2010 11 17.33214 04 49 12.08 +14 14 39.3 21.3V 309741 291 C~0PMi 2010 11 17.34601 04 49 11.86 +14 14 37.3 21.2V 309741 291 C~0PMi 2010 12 04.30542 04 44 36.13 +13 40 27.9 20.5V 309741 G96 C~0Pn2 2010 12 04.31233 04 44 36.02 +13 40 26.6 20.8V 309741 G96 C~0Pn2 2010 12 04.32086 04 44 35.88 +13 40 25.7 20.4V 309741 G96 C~0Pn2 2010 12 04.32784 04 44 35.73 +13 40 24.6 20.3V 309741 G96 C~0Pn2 2011 01 07.23151 04 36 07.40 +12 46 45.3 309741 291 C~0QtZ 2011 01 07.25405 04 36 07.06 +12 46 44.2 309741 291 C~0QtZ 2011 01 07.26452 04 36 06.93 +12 46 43.3 309741 291 C~0QtZ 2011 09 09.47201 05 42 40.11 +10 00 49.3 309741 291 C~0Xyk 2011 09 09.48282 05 42 40.25 +10 00 47.9 309741 291 C~0Xyk 2011 11 29.45801 05 37 55.04 +06 45 32.2 309741 291 C~0b3a 2011 11 29.46652 05 37 54.85 +06 45 31.3 309741 291 C~0b3a 2012 12 19.12505 06 21 25.21 -00 58 45.8 20.8R 309741 304 C~0svd 2012 12 19.17486 06 21 24.38 -00 58 49.6 309741 304 C~0svd 2012 12 19.31002 06 21 22.15 -00 58 59.7 309741 304 C~0svd 2012 12 20.13619 06 21 08.77 -01 00 00.9 309741 304 C~0svd 2012 12 20.20742 06 21 07.60 -01 00 06.0 309741 304 C~0svd 2012 12 20.31506 06 21 05.82 -01 00 14.1 309741 304 C~0svd 2013 02 05.05736 06 09 58.81 -01 11 02.8 21.1R 309741 304 C~0svd 2013 02 05.12507 06 09 58.15 -01 11 00.2 309741 304 C~0svd 2013 02 05.20279 06 09 57.40 -01 10 57.2 309741 304 C~0svd 2013 02 06.05411 06 09 49.54 -01 10 24.5 309741 304 C~0svd 2013 02 06.10169 06 09 49.08 -01 10 22.6 309741 304 C~0svd 2013 02 06.19946 06 09 48.17 -01 10 18.8 309741 304 C~0svd 2013 02 07.06142 06 09 40.48 -01 09 44.3 309741 304 C~0svd 2013 02 07.10809 06 09 40.05 -01 09 42.3 309741 304 C~0svd 2013 02 09.04072 06 09 23.60 -01 08 20.4 309741 304 C~0svd 2013 02 09.13912 06 09 22.77 -01 08 16.0 309741 304 C~0svd 2013 02 09.14769 06 09 22.70 -01 08 15.6 309741 304 C~0svd
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 0.27 0.00 0.29
2 0.0000 0.00 -0.18 0.00 0.04
3 0.0001 0.00 0.27 0.00 0.19
4 0.0033 0.00 -0.19 0.00 -0.24
5 0.0034 0.00 -0.08 0.00 -0.26
6 0.0034 0.00 0.00 0.00 -0.06
7 0.0060 0.00 1.19 0.00 -0.07
8 0.0061 0.00 0.21 0.00 0.49
9 0.0077 0.00 -0.65 0.00 -0.57
10 0.0081 0.00 -0.96 0.00 0.37
11 0.0083 0.00 0.58 0.00 -0.15
12 0.0083 0.00 0.34 0.00 0.21
13 0.0084 0.00 0.46 0.00 0.22
14 0.0090 0.00 -1.46 0.00 0.24
15 0.0101 0.00 -0.06 0.00 -0.99
16 0.0101 0.00 0.10 0.00 -0.95
17 0.0101 0.00 0.12 0.00 -0.44
18 0.0102 0.00 0.31 0.00 -0.78
19 0.0102 0.00 0.26 0.00 -0.32
20 0.0102 0.00 -0.32 0.00 -0.56
21 0.0105 0.00 0.40 0.00 -0.29
22 0.0109 0.00 0.29 0.00 1.03
23 0.0109 0.00 0.29 0.00 0.69
24 0.0110 0.00 -1.59 0.00 0.87
25 0.0111 0.00 0.33 0.00 0.02
26 0.0112 0.00 0.44 0.00 0.06
27 0.0112 0.00 0.48 0.00 0.02
28 0.0113 0.00 0.33 0.00 -0.13
29 0.0113 0.00 0.37 0.00 -0.09
30 0.0114 0.00 0.10 0.00 0.01
31 0.0114 0.00 0.30 0.00 -0.09
32 0.0136 0.00 -0.36 0.00 0.31
33 0.0136 0.00 -0.38 0.00 0.32
34 0.0136 0.00 -0.40 0.00 0.13
35 0.0142 0.00 0.35 0.00 0.02
36 0.0142 0.00 0.48 0.00 -0.02
37 0.0142 0.00 0.36 0.00 0.09
38 0.0142 0.00 0.13 0.00 0.04
39 0.0818 0.00 -0.49 0.00 0.21
40 0.0819 0.00 -0.42 0.00 0.31
41 0.0819 0.00 -0.03 0.00 0.43
42 0.0906 0.00 -0.46 0.00 0.52
43 0.0906 0.00 -0.28 0.00 0.40
44 0.1821 0.00 0.69 0.00 -0.04
45 0.1833 0.00 -0.11 0.00 -0.01
46 0.1834 0.00 -0.13 0.00 -0.14
47 0.1878 0.00 -0.41 0.00 0.08
48 0.1886 0.00 0.40 0.00 0.32
49 0.1889 0.00 0.60 0.00 -0.21
50 0.7999 0.00 -0.61 0.00 0.09
51 0.8000 0.00 0.19 0.00 -0.15
52 0.8000 0.00 -1.06 0.00 0.21
53 0.9780 0.00 -0.45 0.00 -0.23
54 0.9780 0.00 -0.09 0.00 0.33
55 0.9781 0.00 -0.32 0.00 0.51
56 1.0053 0.00 -0.32 0.00 -0.45
57 1.0053 0.00 0.06 0.00 -0.27
58 1.0054 0.00 -0.33 0.00 -0.29
59 1.0104 0.00 1.02 0.00 0.22
60 1.0104 0.00 -0.06 0.00 0.06
61 1.0105 0.00 -0.36 0.00 0.05
62 1.0895 0.00 -0.20 0.00 -0.11
63 1.0895 0.00 0.06 0.00 -0.28
64 1.0896 0.00 -0.43 0.00 -0.05
65 1.1361 0.00 -0.10 0.00 -0.34
66 1.1361 0.00 0.02 0.00 -0.29
67 1.1362 0.00 0.14 0.00 -0.03
68 1.1362 0.00 0.11 0.00 -0.37
69 1.9034 0.00 -0.10 0.00 0.08
70 1.9034 0.00 0.18 0.00 -0.37
71 1.9035 0.00 0.61 0.00 -0.89
72 2.0700 0.00 -0.05 0.00 0.14
73 2.0701 0.00 -0.14 0.00 0.21
74 2.0701 0.00 -0.18 0.00 -0.05
75 2.1165 0.00 0.03 0.00 0.32
76 2.1165 0.00 0.15 0.00 -0.19
77 2.1166 0.00 0.23 0.00 -0.11
78 2.1166 0.00 -0.23 0.00 -0.41
79 2.2094 0.00 0.81 0.00 -0.26
80 2.2095 0.00 -0.24 0.00 0.27
81 2.2095 0.00 -0.31 0.00 0.13
82 2.8808 0.00 0.69 0.00 0.31
83 2.8809 0.00 1.05 0.00 0.41
84 3.1026 0.00 -0.01 0.00 0.24
85 3.1026 0.00 -0.85 0.00 0.34
86 4.1585 0.00 0.13 0.00 -0.06
87 4.1586 0.00 0.02 0.00 -0.09
88 4.1590 0.00 0.07 0.00 0.00
89 4.1612 0.00 -0.15 0.00 0.08
90 4.1614 0.00 0.01 0.00 0.18
91 4.1617 0.00 0.07 0.00 -0.09
92 4.2897 0.00 -0.13 0.00 -0.07
93 4.2899 0.00 -0.11 0.00 -0.01
94 4.2901 0.00 -0.06 0.00 0.06
95 4.2924 0.00 -0.02 0.00 0.02
96 4.2926 0.00 -0.17 0.00 0.06
97 4.2928 0.00 -0.03 0.00 0.01
98 4.2952 0.00 0.07 0.00 -0.07
99 4.2953 0.00 0.02 0.00 0.02
100 4.3006 0.00 -0.12 0.00 -0.10
101 4.3009 0.00 -0.03 0.00 -0.03
102 4.3009 0.00 0.01 0.00 -0.01
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.
309741 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 27.490 27.490 27.491 ecceobj 0.614 0.614 0.614 incobj 35.807 35.807 35.807 qmin 10.093 10.474 9.961 qmax 44.892 51.619 46.946 amean 26.959 29.983 27.427 amin 26.096 26.867 26.280 amax 27.728 31.468 28.596 emean 0.611 0.620 0.617 emin 0.598 0.595 0.587 emax 0.629 0.655 0.642 imean 36.827 38.372 37.027 imin 36.369 36.482 35.952 imax 37.049 40.090 40.049 excite_mean 0.856 0.877 0.862 fracstop 0.006 0.034 0.048 cjmean 2.324 2.241 2.305 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 214.9 218.7 255.6 kozaiamp 14.6 18.0 54.5