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: 613908 # Created Sun Apr 27 01:07:48 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 80 observations of 80 # Arc: 10.11y # First observation: 1998/09/19 # Last observation: 2008/10/28 # Chi-squared of fit: 79.96 DOF: 154 RMS: 0.18 # Min/Max residuals: -0.55 0.50 # Exact a, adot, b, bdot, g, gdot: 1.417257E-05 1.863710E-02 -2.452686E-06 -4.376382E-03 2.099721E-02 7.072176E-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 -15.518315 40.996211 0.700192 -0.189787 -0.682648 2451075.918621 # Heliocentric elements and errors Epoch: 2451076.5000 = 1998/09/20 Mean Anomaly: 44.77167 +/- 0.000 Argument of Peri: 145.02605 +/- 0.000 Long of Asc Node: 172.19134 +/- 0.000 Inclination: 20.21578 +/- 0.000 Eccentricity: 0.36724137 +/- 0.0000 Semi-Major Axis: 57.74040740 +/- 0.0000 Time of Perihelion: 2431145.9627 +/- 0.0 Perihelion: 36.53574104 +/- 0.0000 Aphelion: 78.94507375 +/- 0.0000 Period (y) 438.7609 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.63704785 +/- 0.0000 Ecliptic Y 30.03932018 +/- 0.0000 Ecliptic Z -12.74210267 +/- 0.0000 Ecliptic XDOT -0.00103867 +/- 0.0000 Ecliptic YDOT 0.00232594 +/- 0.0000 Ecliptic ZDOT -0.00079660 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 48.31870779 +/- 0.0000 Geocenter to KBO 47.62515870 +/- 0.0000 # Hcoef: 5.76
The following table shows the complete astrometric record for 613908. 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 (613908) followed by the observatory code and reference code for the source of the astrometry.
1998 09 19.41789 02 53 22.45 +00 20 30.1 22.8V 613908 705 Cz3610 1998 09 19.42121 02 53 22.43 +00 20 30.3 23.6 613908 705 Cz3610 1998 10 29.307044 02 51 07.59 +00 02 34.1 22.1V 613908 645 C~2KuE 1998 10 29.307873 02 51 07.59 +00 02 34.3 21.8V 613908 645 C~2KuE 1998 10 29.310361 02 51 07.59 +00 02 34.1 23.2V 613908 645 C~2KuE 1998 11 17.254166 02 49 50.62 -00 03 43.2 22.4V 613908 645 C~2KuE 1998 11 17.254995 02 49 50.63 -00 03 43.2 21.9V 613908 645 C~2KuE 1998 11 17.257483 02 49 50.62 -00 03 43.1 23.4V 613908 645 C~2KuE 2000 10 01.39310 03 01 29.12 +00 24 29.3 22.7V 613908 705 Cz3610 2000 10 01.39642 03 01 29.12 +00 24 29.3 23.9 613908 705 Cz3610 2000 10 02.47825 03 01 25.83 +00 23 59.2 22.8V 613908 705 Cz3610 2000 10 02.48157 03 01 25.83 +00 23 59.2 24.1 613908 705 Cz3610 2000 11 27.21963 02 57 54.14 +00 04 02.0 22.5V 613908 705 Cz3610 2000 11 27.22295 02 57 54.10 +00 04 02.0 23.4 613908 705 Cz3610 2001 11 11.33885 03 03 15.04 +00 12 58.1 22.0V 613908 705 Cz3610 2001 11 11.34217 03 03 15.02 +00 12 58.0 23.2 613908 705 Cz3610 2001 11 12.30419 03 03 11.13 +00 12 40.7 23.1V 613908 705 Cz3610 2001 11 12.30751 03 03 11.14 +00 12 40.7 24.3 613908 705 Cz3611 2002 01 14.136652 03 00 01.36 +00 09 21.8 23.2V 613908 645 C~2KuE 2002 01 14.137481 03 00 01.35 +00 09 21.8 22.3V 613908 645 C~2KuE 2002 01 14.139969 03 00 01.36 +00 09 21.8 23.8V 613908 645 C~2KuE 2002 10 04.41649 03 09 48.68 +00 32 47.4 22.7V 613908 705 Cz3611 2002 10 04.41981 03 09 48.68 +00 32 47.5 24.1 613908 705 Cz3611 2002 10 11.44910 03 09 26.42 +00 29 38.8 23.3V 613908 705 Cz3611 2002 10 11.45242 03 09 26.42 +00 29 38.8 24.9 613908 705 Cz3611 2002 11 07.33674 03 07 45.44 +00 19 06.0 22.8V 613908 705 Cz3611 2002 11 07.34006 03 07 45.42 +00 19 05.9 23.8 613908 705 Cz3611 2003 09 26.41452 03 14 19.12 +00 41 05.4 22.7V 613908 705 Cz3611 2003 09 26.41784 03 14 19.12 +00 41 05.4 24.0 613908 705 Cz3611 2003 09 30.39384 03 14 08.83 +00 39 17.1 23.3V 613908 705 Cz3611 2003 09 30.39716 03 14 08.83 +00 39 17.1 24.7 613908 705 Cz3611 2003 10 23.35013 03 12 54.13 +00 29 20.9 23.2V 613908 705 Cz3611 2003 10 23.35345 03 12 54.13 +00 29 20.9 24.7 613908 705 Cz3611 2004 09 22.409756 03 18 30.55 +00 46 59.4 22.6V 613908 645 C~1QdQ 2004 09 22.410585 03 18 30.55 +00 46 59.3 22.2V 613908 645 C~1QdQ 2004 09 22.413073 03 18 30.54 +00 46 59.3 23.4V 613908 645 C~1QdQ 2004 09 24.459446 03 18 25.89 +00 46 04.1 22.5V 613908 645 C~2KuE 2004 09 24.460275 03 18 25.89 +00 46 04.1 22.2V 613908 645 C~2KuF 2004 09 24.462763 03 18 25.89 +00 46 04.1 23.4V 613908 645 C~2KuF 2004 10 08.427467 03 17 47.80 +00 39 50.7 22.1V 613908 645 C~2KuF 2004 10 08.430784 03 17 47.80 +00 39 50.8 23.6V 613908 645 C~2KuF 2004 10 10.386003 03 17 41.61 +00 38 59.2 22.7V 613908 645 C~2KuF 2004 10 10.386832 03 17 41.61 +00 38 59.2 21.5V 613908 645 C~2KuF 2004 10 10.389320 03 17 41.61 +00 38 59.2 23.5V 613908 645 C~2KuF 2005 09 09.45948 03 22 53.11 +00 57 07.2 22.8 613908 705 Cy0828 2005 09 09.46280 03 22 53.08 +00 57 07.2 23.7 613908 705 Cy0828 2005 10 01.40108 03 22 09.80 +00 47 26.5 23.1 613908 705 Cy0828 2005 10 01.40440 03 22 09.79 +00 47 27.0 24.1 613908 705 Cy0828 2006 09 27.45768 03 26 17.66 +00 53 36.6 22.9 613908 705 Cy0828 2006 09 27.46100 03 26 17.65 +00 53 36.7 23.9 613908 705 Cy0828 2006 10 01.47138 03 26 07.74 +00 51 50.2 23.0 613908 705 Cy0828 2006 10 01.47470 03 26 07.73 +00 51 50.1 24.3 613908 705 Cy0828 2006 10 02.39849 03 26 05.33 +00 51 26.0 23.4 613908 705 Cy0828 2006 10 02.39932 03 26 05.33 +00 51 25.7 24.9 613908 705 Cy0828 2006 10 23.37696 03 24 59.14 +00 42 37.6 23.1 613908 705 Cy0828 2006 10 23.37779 03 24 59.14 +00 42 37.5 24.2 613908 705 Cy0828 2006 10 31.38036 03 24 29.47 +00 39 38.2 22.6 613908 705 Cy0828 2006 10 31.38285 03 24 29.46 +00 39 37.9 23.6 613908 705 Cy0828 2006 11 17.37716 03 23 22.75 +00 34 22.0 22.9 613908 705 Cy0828 2006 11 17.37799 03 23 22.73 +00 34 21.9 24.3 613908 705 Cy0828 2006 11 23.37606 03 22 59.00 +00 32 55.8 23.1 613908 705 Cy0828 2006 11 23.37689 03 22 58.99 +00 32 55.9 24.5 613908 705 Cy0828 2007 09 19.46937 03 30 28.45 +01 01 27.4 23.0 613908 705 Cy0828 2007 09 19.47020 03 30 28.46 +01 01 27.0 24.2 613908 705 Cy0828 2007 11 02.37238 03 28 18.80 +00 43 24.0 22.9 613908 705 Cy0828 2007 11 02.37321 03 28 18.80 +00 43 24.0 23.8 613908 705 Cy0828 2007 11 05.37709 03 28 07.25 +00 42 22.9 23.1 613908 705 Cy0828 2007 11 05.37792 03 28 07.26 +00 42 23.0 24.0 613908 705 Cy0828 2007 11 12.37075 03 27 39.88 +00 40 12.9 23.2 613908 705 Cy0828 2007 11 12.37158 03 27 39.87 +00 40 12.8 24.5 613908 705 Cy0828 2007 11 19.35278 03 27 12.19 +00 38 20.4 22.9 613908 705 Cy0828 2007 11 19.35361 03 27 12.20 +00 38 20.4 23.7 613908 705 Cy0828 2007 11 20.31243 03 27 08.44 +00 38 06.2 23.1 613908 705 Cy0828 2007 11 20.31326 03 27 08.41 +00 38 06.6 24.5 613908 705 Cy0828 2008 10 24.36616 03 32 42.17 +00 50 42.8 22.6r 613908 695 C~0gMf 2008 10 24.48647 03 32 41.76 +00 50 40.1 22.4r 613908 695 C~0gMf 2008 10 28.47666 03 32 27.32 +00 49 11.9 23.1R 613908 250 S~06BM 2008 10 28.48291 03 32 27.30 +00 49 11.8 613908 250 S~06BM 2008 10 28.48985 03 32 27.27 +00 49 11.6 613908 250 S~06BM 2008 10 28.49680 03 32 27.25 +00 49 11.5 613908 250 S~06BM
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 0.03 0.00 -0.17
2 0.0000 0.00 -0.15 0.00 0.12
3 0.1092 0.00 -0.09 0.00 -0.16
4 0.1092 0.00 -0.04 0.00 0.06
5 0.1092 0.00 0.12 0.00 -0.08
6 0.1611 0.00 0.07 0.00 0.04
7 0.1611 0.00 0.28 0.00 0.06
8 0.1611 0.00 0.28 0.00 0.20
9 2.0342 0.00 -0.06 0.00 0.07
10 2.0342 0.00 0.09 0.00 0.16
11 2.0371 0.00 -0.21 0.00 0.10
12 2.0371 0.00 -0.05 0.00 0.19
13 2.1897 0.00 -0.14 0.00 -0.12
14 2.1897 0.00 -0.55 0.00 -0.08
15 3.1456 0.00 -0.10 0.00 -0.03
16 3.1456 0.00 -0.20 0.00 -0.07
17 3.1482 0.00 -0.22 0.00 0.03
18 3.1482 0.00 0.13 0.00 0.09
19 3.3202 0.00 0.03 0.00 0.00
20 3.3202 0.00 -0.10 0.00 -0.01
21 3.3203 0.00 0.10 0.00 -0.04
22 4.0411 0.00 -0.24 0.00 -0.16
23 4.0411 0.00 -0.09 0.00 0.03
24 4.0603 0.00 -0.03 0.00 -0.13
25 4.0603 0.00 0.13 0.00 -0.04
26 4.1339 0.00 -0.07 0.00 0.03
27 4.1339 0.00 -0.17 0.00 -0.00
28 5.0185 0.00 -0.10 0.00 -0.07
29 5.0185 0.00 0.03 0.00 0.02
30 5.0294 0.00 -0.03 0.00 -0.05
31 5.0294 0.00 0.11 0.00 0.04
32 5.0922 0.00 0.22 0.00 -0.09
33 5.0922 0.00 0.41 0.00 -0.01
34 6.0096 0.00 0.16 0.00 -0.09
35 6.0096 0.00 0.18 0.00 -0.17
36 6.0096 0.00 0.12 0.00 -0.10
37 6.0152 0.00 -0.05 0.00 -0.11
38 6.0152 0.00 -0.02 0.00 -0.09
39 6.0152 0.00 0.07 0.00 -0.02
40 6.0534 0.00 0.34 0.00 0.31
41 6.0534 0.00 0.50 0.00 0.50
42 6.0588 0.00 -0.09 0.00 0.07
43 6.0588 0.00 -0.05 0.00 0.09
44 6.0588 0.00 0.07 0.00 0.15
45 6.9734 0.00 0.00 0.00 -0.09
46 6.9734 0.00 -0.38 0.00 -0.01
47 7.0335 0.00 -0.03 0.00 -0.24
48 7.0335 0.00 -0.04 0.00 0.35
49 8.0220 0.00 0.03 0.00 0.09
50 8.0220 0.00 -0.00 0.00 0.28
51 8.0330 0.00 -0.05 0.00 -0.14
52 8.0330 0.00 -0.06 0.00 -0.15
53 8.0355 0.00 0.08 0.00 0.09
54 8.0355 0.00 0.11 0.00 -0.19
55 8.0930 0.00 -0.23 0.00 -0.08
56 8.0930 0.00 -0.19 0.00 -0.16
57 8.1149 0.00 -0.27 0.00 0.02
58 8.1149 0.00 -0.27 0.00 -0.23
59 8.1614 0.00 0.02 0.00 -0.03
60 8.1614 0.00 -0.23 0.00 -0.12
61 8.1778 0.00 0.19 0.00 -0.34
62 8.1778 0.00 0.09 0.00 -0.23
63 8.9995 0.00 0.01 0.00 0.05
64 8.9995 0.00 0.18 0.00 -0.33
65 9.1197 0.00 0.14 0.00 0.03
66 9.1197 0.00 0.18 0.00 0.05
67 9.1279 0.00 0.02 0.00 -0.21
68 9.1279 0.00 0.22 0.00 -0.09
69 9.1470 0.00 0.31 0.00 0.08
70 9.1470 0.00 0.21 0.00 -0.01
71 9.1661 0.00 -0.22 0.00 -0.05
72 9.1661 0.00 -0.02 0.00 -0.04
73 9.1688 0.00 0.45 0.00 -0.30
74 9.1688 0.00 0.05 0.00 0.11
75 10.0971 0.00 -0.26 0.00 0.05
76 10.0974 0.00 0.10 0.00 0.08
77 10.1083 0.00 -0.15 0.00 0.37
78 10.1083 0.00 -0.11 0.00 0.40
79 10.1083 0.00 -0.17 0.00 0.35
80 10.1084 0.00 -0.09 0.00 0.41
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.
613908 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 57.780 57.781 57.780 ecceobj 0.366 0.366 0.366 incobj 20.226 20.226 20.226 qmin 35.471 35.445 35.444 qmax 80.267 80.263 80.108 amean 57.279 57.271 57.232 amin 56.604 56.628 56.575 amax 58.169 58.148 58.055 emean 0.362 0.363 0.361 emin 0.344 0.347 0.342 emax 0.380 0.380 0.380 imean 19.887 19.806 19.913 imin 19.195 19.180 19.204 imax 20.630 20.464 20.754 excite_mean 0.497 0.497 0.496 fracstop 1.000 1.000 1.000 cjmean 2.944 2.944 2.944 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 184.0 179.9 179.7 kozaiamp 180.0 180.0 180.0