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: 04PU117 # Created Wed Apr 24 01:11:58 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 20 observations of 20 # Arc: 17.08y # First observation: 2004/08/15 # Last observation: 2021/09/12 # Chi-squared of fit: 30.97 DOF: 34 RMS: 0.22 # Min/Max residuals: -0.49 0.61 # Exact a, adot, b, bdot, g, gdot: 1.439739E-05 2.339144E-02 8.306488E-07 1.824974E-04 2.412687E-02 -3.985627E-04 # Covariance matrix: 2.1153E-13 -7.0504E-14 8.8248E-16 -4.0458E-16 -1.4034E-13 -1.3316E-13 -7.0504E-14 5.1722E-14 -6.3571E-16 3.5829E-16 8.1570E-14 1.1301E-13 8.8248E-16 -6.3571E-16 1.3447E-13 -9.9285E-15 -2.3749E-15 -1.3014E-15 -4.0458E-16 3.5829E-16 -9.9285E-15 1.9445E-15 2.0214E-16 8.5429E-16 -1.4034E-13 8.1570E-14 -2.3749E-15 2.0214E-16 6.3665E-13 1.3171E-13 -1.3316E-13 1.1301E-13 -1.3014E-15 8.5429E-16 1.3171E-13 2.6223E-13 # lat0 lon0 xBary yBary zBary JD0 -1.858718 -52.998884 -0.277756 -0.031668 -0.977633 2453232.837463 # Heliocentric elements and errors Epoch: 2453232.5000 = 2004/08/15 Mean Anomaly: 304.65798 +/- 0.393 Argument of Peri: 340.74561 +/- 0.403 Long of Asc Node: 22.98243 +/- 0.003 Inclination: 1.87468 +/- 0.000 Eccentricity: 0.01074723 +/- 0.0001 Semi-Major Axis: 42.68009289 +/- 0.0053 Time of Perihelion: 2468888.7927 +/- 112.5 Perihelion: 42.22140020 +/- 0.0058 Aphelion: 43.13878559 +/- 0.0059 Period (y) 278.8343 +/- 0.05 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 25.73815280 +/- 0.0008 Ecliptic Y -33.69595894 +/- 0.0011 Ecliptic Z -1.34428870 +/- 0.0000 Ecliptic XDOT 0.00209114 +/- 0.0000 Ecliptic YDOT 0.00162606 +/- 0.0000 Ecliptic ZDOT 0.00002227 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.42260892 +/- 0.0010 Geocenter to KBO 41.44761254 +/- 0.0014 # Hcoef: 7.02
The following table shows the complete astrometric record for 04PU117. 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 (04PU117) followed by the observatory code and reference code for the source of the astrometry.
2004 08 15.33672 20 39 35.69 -20 19 12.6 23.1g 04PU117 568 C~0VDr 2004 08 15.36789 20 39 35.53 -20 19 13.1 23.5g 04PU117 568 C~0VDr 2004 08 15.39461 20 39 35.40 -20 19 13.6 23.3g 04PU117 568 C~0VDr 2004 08 16.30448 20 39 31.17 -20 19 28.6 23.4g 04PU117 568 C~0VDr 2005 07 12.18589 20 47 49.83 -19 47 11.4 23.2R 04PU117 809 C~0VDr 2005 07 12.27837 20 47 49.42 -19 47 13.1 23.0R 04PU117 809 C~0VDr 2005 07 12.32788 20 47 49.20 -19 47 14.2 23.3R 04PU117 809 C~0VDr 2005 10 03.12724 20 42 15.68 -20 07 03.5 23. R 04PU117 675 C~0VDr 2005 10 03.17120 20 42 15.58 -20 07 03.6 04PU117 675 C~0VDr 2006 07 20.42973 20 52 41.06 -19 27 19.6 04PU117 568 C~0VDr 2006 07 20.45624 20 52 40.94 -19 27 19.9 04PU117 568 C~0VDr 2006 07 20.48260 20 52 40.80 -19 27 20.4 04PU117 568 C~0VDr 2006 07 26.26342 20 52 13.36 -19 29 12.9 04PU117 675 C~0VDs 2006 07 26.31002 20 52 13.12 -19 29 13.4 04PU117 675 C~0VDs 2013 10 05.12875 21 25 04.79 -16 58 12.0 23.6R 04PU117 695 C~0zda 2013 10 05.25088 21 25 04.51 -16 58 12.7 04PU117 695 C~0zda 2013 10 06.14249 21 25 02.42 -16 58 20.6 04PU117 695 C~0zda 2021 09 12.141440 22 08 07.124 -13 08 08.98 23.2G 04PU117 G37 C~554U 2021 09 12.199790 22 08 06.875 -13 08 10.32 04PU117 G37 C~554U 2021 09 12.256580 22 08 06.623 -13 08 11.68 04PU117 G37 C~554U
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 0.24 0.00 -0.09
2 0.0001 0.00 0.07 0.00 -0.08
3 0.0002 0.00 0.03 0.00 -0.13
4 0.0026 0.00 0.23 0.00 -0.21
5 0.9058 0.00 -0.24 0.00 0.06
6 0.9061 0.00 -0.01 0.00 0.07
7 0.9062 0.00 0.11 0.00 -0.12
8 1.1329 0.00 0.05 0.00 -0.29
9 1.1330 0.00 -0.23 0.00 -0.21
10 1.9277 0.00 -0.12 0.00 0.23
11 1.9278 0.00 -0.02 0.00 0.44
12 1.9278 0.00 -0.23 0.00 0.45
13 1.9437 0.00 0.13 0.00 -0.28
14 1.9438 0.00 -0.06 0.00 0.13
15 9.1384 0.00 -0.49 0.00 -0.21
16 9.1387 0.00 -0.08 0.00 0.20
17 9.1412 0.00 0.61 0.00 0.22
18 17.0754 0.00 -0.01 0.00 -0.02
19 17.0756 0.00 0.05 0.00 -0.05
20 17.0758 0.00 -0.02 0.00 -0.14
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.
04PU117 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.859 42.859 42.859 ecceobj 0.017 0.017 0.017 incobj 1.873 1.873 1.873 qmin 41.072 41.073 41.072 qmax 44.876 44.874 44.882 amean 42.885 42.885 42.885 amin 42.555 42.555 42.555 amax 43.222 43.219 43.224 emean 0.022 0.022 0.022 emin 0.000 0.000 0.001 emax 0.039 0.039 0.039 imean 1.862 1.862 1.862 imin 0.674 0.675 0.674 imax 2.702 2.702 2.702 excite_mean 0.041 0.041 0.041 fracstop 1.000 1.000 1.000 cjmean 3.086 3.086 3.086 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 184.6 184.7 184.5 kozaiamp 179.9 179.9 180.0