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: 04MS8 # Created Fri Nov 22 02:08:37 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 21 observations of 21 # Arc: 20.27y # First observation: 2004/06/24 # Last observation: 2024/10/01 # Chi-squared of fit: 28.91 DOF: 36 RMS: 0.21 # Min/Max residuals: -0.34 0.78 # Exact a, adot, b, bdot, g, gdot: 2.162073E-05 4.940718E-02 4.363160E-06 1.071519E-02 3.732226E-02 2.605441E-03 # Covariance matrix: 1.1752E-13 -6.7186E-15 6.2407E-15 -7.7473E-16 6.1291E-14 -1.2167E-14 -6.7186E-15 1.1895E-14 -1.5604E-14 1.3505E-15 2.6577E-14 2.0049E-14 6.2407E-15 -1.5604E-14 1.1197E-13 -1.0429E-14 -2.1996E-14 -3.2915E-14 -7.7473E-16 1.3505E-15 -1.0429E-14 1.2080E-15 1.4539E-15 2.9654E-15 6.1291E-14 2.6577E-14 -2.1996E-14 1.4539E-15 1.7533E-13 2.0308E-14 -1.2167E-14 2.0049E-14 -3.2915E-14 2.9654E-15 2.0308E-14 4.4355E-14 # lat0 lon0 xBary yBary zBary JD0 -0.812176 -74.852159 0.207239 -0.014087 -0.996984 2453180.936473 # Heliocentric elements and errors Epoch: 2453180.5000 = 2004/06/24 Mean Anomaly: 6.01727 +/- 0.001 Argument of Peri: 344.75517 +/- 0.000 Long of Asc Node: 288.31770 +/- 0.000 Inclination: 12.26567 +/- 0.000 Eccentricity: 0.29577337 +/- 0.0000 Semi-Major Axis: 39.27738829 +/- 0.0000 Time of Perihelion: 2451677.6727 +/- 0.3 Perihelion: 27.66018270 +/- 0.0001 Aphelion: 50.89459387 +/- 0.0001 Period (y) 246.1626 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 7.05782922 +/- 0.0000 Ecliptic Y -26.87490255 +/- 0.0000 Ecliptic Z -0.37963695 +/- 0.0000 Ecliptic XDOT 0.00354892 +/- 0.0000 Ecliptic YDOT 0.00074488 +/- 0.0000 Ecliptic ZDOT 0.00078336 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 27.78877484 +/- 0.0000 Geocenter to KBO 26.79365839 +/- 0.0000 # Hcoef: 8.26
The following table shows the complete astrometric record for 04MS8. 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 (04MS8) followed by the observatory code and reference code for the source of the astrometry.
2004 06 24.43573 19 06 09.38 -23 23 09.4 04MS8 568 C~0Uqy 2004 06 24.46335 19 06 09.18 -23 23 09.5 04MS8 568 C~0Uqy 2004 06 25.45812 19 06 01.98 -23 23 15.1 23.4g 04MS8 568 C~0Uqy 2004 06 25.45953 19 06 01.95 -23 23 15.1 23.1g 04MS8 568 C~0Uqy 2004 06 25.48101 19 06 01.81 -23 23 15.4 22.7g 04MS8 568 C~0Uqy 2004 06 25.48243 19 06 01.80 -23 23 15.3 22.9g 04MS8 568 C~0Uqy 2004 06 25.49954 19 06 01.66 -23 23 15.4 22.9g 04MS8 568 C~0Uqy 2004 06 25.50096 19 06 01.65 -23 23 15.2 22.8g 04MS8 568 C~0Uqy 2005 06 11.46244 19 19 27.69 -22 24 22.2 04MS8 568 C~0Uqy 2005 06 12.51301 19 19 21.02 -22 24 28.4 04MS8 568 C~0Uqy 2005 06 12.55269 19 19 20.77 -22 24 28.7 04MS8 568 C~0Uqy 2006 07 03.43985 19 28 35.70 -21 26 55.5 22.6r 04MS8 568 C~0Uqy 2006 07 04.43937 19 28 28.52 -21 27 04.6 23.0r 04MS8 568 C~0Uqy 2006 10 22.10888 19 21 59.64 -21 30 45.0 04MS8 675 C~0Uqy 2006 10 23.11314 19 22 03.22 -21 30 34.0 04MS8 675 C~0Uqy 2006 10 24.10993 19 22 06.87 -21 30 21.9 04MS8 675 C~0Uqy 2013 10 05.10812 20 34 45.07 -14 02 50.8 22.4R 04MS8 695 C~0zdZ 2013 10 06.09907 20 34 43.47 -14 03 00.9 04MS8 695 C~0zdZ 2024 10 01.101420 22 10 44.043 -01 22 12.75 23.4G 04MS8 G37 C~8Gif 2024 10 01.144690 22 10 43.843 -01 22 13.90 04MS8 G37 C~8Gif 2024 10 01.186980 22 10 43.665 -01 22 15.46 04MS8 G37 C~8Gif
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 -0.16 0.00 0.02
2 0.0001 0.00 -0.11 0.00 0.08
3 0.0028 0.00 -0.00 0.00 0.09
4 0.0028 0.00 -0.29 0.00 0.10
5 0.0029 0.00 -0.01 0.00 -0.08
6 0.0029 0.00 -0.00 0.00 0.03
7 0.0029 0.00 -0.20 0.00 0.02
8 0.0029 0.00 -0.19 0.00 0.23
9 0.9638 0.00 0.78 0.00 -0.25
10 0.9667 0.00 0.00 0.00 -0.08
11 0.9668 0.00 0.10 0.00 -0.14
12 2.0233 0.00 -0.15 0.00 0.04
13 2.0260 0.00 -0.27 0.00 -0.08
14 2.3263 0.00 -0.01 0.00 0.21
15 2.3290 0.00 0.52 0.00 -0.29
16 2.3318 0.00 0.25 0.00 0.11
17 9.2804 0.00 -0.34 0.00 0.04
18 9.2831 0.00 0.12 0.00 -0.11
19 20.2701 0.00 0.03 0.00 -0.11
20 20.2703 0.00 -0.08 0.00 0.17
21 20.2704 0.00 0.07 0.00 0.00
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.
04MS8 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.226 39.226 39.226 ecceobj 0.295 0.295 0.295 incobj 12.261 12.261 12.261 qmin 26.886 26.908 27.010 qmax 52.860 52.860 52.860 amean 39.454 39.455 39.455 amin 38.889 38.910 38.878 amax 40.141 40.141 40.141 emean 0.302 0.302 0.300 emin 0.286 0.288 0.284 emax 0.318 0.318 0.317 imean 13.709 13.682 13.732 imin 13.180 13.126 13.140 imax 14.429 14.159 14.425 excite_mean 0.384 0.384 0.382 fracstop 1.000 1.000 1.000 cjmean 2.883 2.883 2.884 libcent 0 179.8 179.4 179.9 libamp 0 124.7 124.9 125.2 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 178.8 174.8 177.1 kozaiamp 179.9 180.0 180.0