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: 05TH173
# Created Sun Dec 22 02:08:51 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 18 observations of 18
# Arc: 1.00y
# First observation: 2004/12/03
# Last observation: 2005/12/04
# Chi-squared of fit: 40.20 DOF: 30 RMS: 0.26
# Min/Max residuals: -0.67 0.61
# Exact a, adot, b, bdot, g, gdot:
2.691790E-05 1.135418E-01 -6.573597E-06 -2.747068E-02 6.764556E-02 -3.147961E-02
# Covariance matrix:
4.8954E-13 -3.3963E-13 5.7877E-16 -3.5403E-14 -3.9658E-14 1.2941E-12
-3.3963E-13 5.2536E-10 2.3291E-12 -1.2134E-10 1.7983E-10 4.4705E-09
5.7877E-16 2.3291E-12 4.8949E-13 -1.0546E-12 8.0020E-13 1.9848E-11
-3.5403E-14 -1.2134E-10 -1.0546E-12 2.8722E-11 -4.1640E-11 -1.0340E-09
-3.9658E-14 1.7983E-10 8.0020E-13 -4.1640E-11 6.2601E-11 1.5342E-09
1.2941E-12 4.4705E-09 1.9848E-11 -1.0340E-09 1.5342E-09 3.8094E-08
# lat0 lon0 xBary yBary zBary JD0
0.720084 7.089949 -0.886959 0.005534 -0.432023 2453342.762369
# Heliocentric elements and errors
Epoch: 2453342.5000 = 2004/12/03
Mean Anomaly: 330.62578 +/- 0.091
Argument of Peri: 231.10742 +/- 0.198
Long of Asc Node: 193.34351 +/- 0.000
Inclination: 13.49605 +/- 0.001
Eccentricity: 0.30598177 +/- 0.0017
Semi-Major Axis: 19.82668740 +/- 0.0281
Time of Perihelion: 2455973.6007 +/- 63.5
Perihelion: 13.76008251 +/- 0.0395
Aphelion: 25.89329229 +/- 0.0502
Period (y) 88.2843 +/- 0.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 14.98369812 +/- 0.0017
Ecliptic Y 2.75888231 +/- 0.0002
Ecliptic Z 0.18568396 +/- 0.0000
Ecliptic XDOT -0.00181850 +/- 0.0000
Ecliptic YDOT 0.00439755 +/- 0.0000
Ecliptic ZDOT -0.00112767 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 15.23678816 +/- 0.0017
Geocenter to KBO 14.78309717 +/- 0.0017
# Hcoef: 11.62
The following table shows the complete astrometric record for 05TH173. 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 (05TH173) followed by the observatory code and reference code for the source of the astrometry.
2004 12 03.261626 00 24 54.01 +03 28 32.1 23.6i 05TH173 568 C~4q5U 2004 12 03.317168 00 24 53.89 +03 28 30.5 23.6i 05TH173 568 C~4q5U 2004 12 03.362690 00 24 53.81 +03 28 28.6 05TH173 568 C~4q5U 2005 10 08.18820 01 00 04.20 +05 41 05.2 22.5R 05TH173 304 Co7771 2005 10 08.22696 01 00 03.76 +05 41 01.5 22.4R 05TH173 304 Co7771 2005 10 08.26516 01 00 03.33 +05 40 58.3 22.4R 05TH173 304 Co7771 2005 10 25.15692 00 57 01.27 +05 17 04.2 05TH173 304 Co7771 2005 10 25.20921 00 57 00.71 +05 17 00.1 05TH173 304 Co7771 2005 11 02.274948 00 55 40.69 +05 06 23.3 05TH173 568 C~4q5U 2005 11 02.288968 00 55 40.52 +05 06 22.1 05TH173 568 C~4q5U 2005 11 02.302966 00 55 40.38 +05 06 21.1 05TH173 568 C~4q5U 2005 11 02.317100 00 55 40.24 +05 06 20.0 05TH173 568 C~4q5U 2005 11 02.331165 00 55 40.12 +05 06 18.9 05TH173 568 C~4q5U 2005 12 04.14801 00 52 03.86 +04 35 34.5 23.7r 05TH173 695 C~4q5U 2005 12 04.15273 00 52 03.85 +04 35 34.2 23.6r 05TH173 695 C~4q5U 2005 12 04.15775 00 52 03.84 +04 35 34.3 23.6r 05TH173 695 C~4q5U 2005 12 04.16255 00 52 03.81 +04 35 34.1 23.7r 05TH173 695 C~4q5U 2005 12 04.16727 00 52 03.79 +04 35 33.9 23.5r 05TH173 695 C~4q5U
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 -0.08 0.00 -0.00
2 0.0002 0.00 -0.07 0.00 0.21
3 0.0003 0.00 0.19 0.00 -0.21
4 0.8458 0.00 0.20 0.00 0.61
5 0.8459 0.00 0.12 0.00 0.26
6 0.8460 0.00 0.09 0.00 0.37
7 0.8923 0.00 -0.42 0.00 -0.67
8 0.8924 0.00 -0.54 0.00 -0.50
9 0.9145 0.00 0.48 0.00 -0.01
10 0.9145 0.00 -0.03 0.00 -0.15
11 0.9146 0.00 -0.08 0.00 -0.09
12 0.9146 0.00 -0.12 0.00 -0.12
13 0.9146 0.00 0.13 0.00 -0.15
14 1.0017 0.00 -0.03 0.00 0.05
15 1.0018 0.00 0.08 0.00 -0.07
16 1.0018 0.00 0.21 0.00 0.21
17 1.0018 0.00 0.03 0.00 0.18
18 1.0018 0.00 -0.00 0.00 0.15
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.
05TH173 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 20.017 20.017 20.017 ecceobj 0.310 0.310 0.310 incobj 13.453 13.453 13.453 qmin 13.809 13.809 13.347 qmax 26.282 26.282 26.922 amean 19.942 19.862 19.853 amin 19.757 19.583 19.445 amax 20.119 20.085 20.265 emean 0.288 0.287 0.295 emin 0.273 0.273 0.263 emax 0.310 0.310 0.334 imean 14.294 14.274 14.287 imin 13.428 13.428 13.428 imax 14.956 15.003 15.394 excite_mean 0.380 0.378 0.385 fracstop 0.004 0.004 0.015 cjmean 3.024 3.028 3.021 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 243.1 240.4 206.4 kozaiamp 16.8 13.0 179.1