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: 160148
# Created Sun Dec 22 02:06:58 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 17 observations of 17
# Arc: 5.96y
# First observation: 2001/05/24
# Last observation: 2007/05/08
# Chi-squared of fit: 47.46 DOF: 28 RMS: 0.30
# Min/Max residuals: -0.56 0.81
# Exact a, adot, b, bdot, g, gdot:
1.483696E-05 2.900340E-02 -6.340366E-06 -7.966637E-03 2.614009E-02 -9.269709E-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
0.435686 -142.574611 -0.438296 0.006879 -0.919967 2452053.550933
# Heliocentric elements and errors
Epoch: 2452054.5000 = 2001/05/25
Mean Anomaly: 344.01137 +/- 0.000
Argument of Peri: 229.24098 +/- 0.000
Long of Asc Node: 39.61280 +/- 0.000
Inclination: 15.35245 +/- 0.000
Eccentricity: 0.50154432 +/- 0.0000
Semi-Major Axis: 68.91074114 +/- 0.0000
Time of Perihelion: 2461334.2759 +/- 0.0
Perihelion: 34.34895028 +/- 0.0000
Aphelion: 103.47253199 +/- 0.0000
Period (y) 572.0561 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -30.83994306 +/- 0.0000
Ecliptic Y -24.15047773 +/- 0.0000
Ecliptic Z 0.29064357 +/- 0.0000
Ecliptic XDOT 0.00260368 +/- 0.0000
Ecliptic YDOT -0.00182398 +/- 0.0000
Ecliptic ZDOT -0.00084157 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.17203349 +/- 0.0000
Geocenter to KBO 38.25567757 +/- 0.0000
# Hcoef: 7.66
The following table shows the complete astrometric record for 160148. 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 (160148) followed by the observatory code and reference code for the source of the astrometry.
2001 05 24.05019 14 20 52.58 -13 34 38.2 23.3R 160148 807 Cd1817 2001 05 24.15877 14 20 52.10 -13 34 36.2 160148 807 Cd1817 2001 06 10.00885 14 19 44.98 -13 30 26.3 24.0R 160148 304 Cd1817 2001 06 10.08296 14 19 44.70 -13 30 25.1 160148 304 Cd1817 2002 04 06.22513 14 30 44.06 -14 48 21.2 22.8R 160148 807 Cf4617 2002 04 06.36489 14 30 43.37 -14 48 18.8 160148 807 Cf4617 2002 04 07.34579 14 30 38.91 -14 48 02.3 160148 807 Cf4617 2002 04 11.34306 14 30 20.19 -14 46 51.6 22.7R 160148 695 Cg5781 2002 04 11.40050 14 30 19.92 -14 46 50.5 160148 695 Cg5781 2003 04 30.52476 14 34 53.72 -15 39 45.5 23.4R 160148 568 Ch9866 2003 05 01.43758 14 34 49.02 -15 39 27.9 160148 568 Ch9866 2003 05 01.50058 14 34 48.67 -15 39 26.7 160148 568 Ch9866 2007 04 21.19436 15 02 02.20 -19 40 58.9 22.3R 160148 807 Cv1520 2007 04 22.26350 15 01 56.70 -19 40 43.0 160148 807 Cv1520 2007 04 22.33045 15 01 56.38 -19 40 42.2 160148 807 Cv1520 2007 05 08.25575 15 00 31.30 -19 36 24.9 23.5R 160148 304 Cu8806 2007 05 08.29814 15 00 31.07 -19 36 24.2 160148 304 Cu8806
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 0.65 0.00 0.12
2 0.0003 0.00 0.81 0.00 0.26
3 0.0464 0.00 -0.30 0.00 0.10
4 0.0466 0.00 -0.56 0.00 0.40
5 0.8684 0.00 0.21 0.00 0.12
6 0.8688 0.00 -0.42 0.00 0.12
7 0.8714 0.00 0.06 0.00 -0.29
8 0.8824 0.00 -0.10 0.00 -0.28
9 0.8825 0.00 0.02 0.00 -0.22
10 1.9342 0.00 -0.06 0.00 -0.14
11 1.9367 0.00 -0.08 0.00 -0.22
12 1.9369 0.00 -0.37 0.00 -0.25
13 5.9087 0.00 -0.36 0.00 -0.02
14 5.9116 0.00 -0.21 0.00 0.20
15 5.9118 0.00 0.26 0.00 0.00
16 5.9554 0.00 0.21 0.00 0.07
17 5.9555 0.00 0.26 0.00 0.03
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.
160148 quality flag:3 Type: 7:2EEEEE 7:2EEEEE 7:2EEEEE axisobj 68.853 68.853 68.854 ecceobj 0.502 0.502 0.502 incobj 15.364 15.364 15.364 qmin 33.368 33.394 33.381 qmax 107.448 107.873 107.887 amean 69.409 69.409 69.408 amin 68.339 68.371 68.302 amax 70.975 70.917 70.995 emean 0.505 0.505 0.505 emin 0.492 0.492 0.492 emax 0.518 0.521 0.520 imean 14.706 14.710 14.703 imin 13.874 13.870 13.883 imax 15.369 15.368 15.370 excite_mean 0.565 0.565 0.565 fracstop 1.000 1.000 1.000 cjmean 2.969 2.969 2.969 libcent 0 180.7 180.1 179.2 libamp 0 112.1 110.3 111.7 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 250.5 252.0 249.4 kozaiamp 180.0 180.0 180.0