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: 06QG181
# Created Tue Jan 21 02:09:02 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 17 observations of 17
# Arc: 8.17y
# First observation: 2006/08/21
# Last observation: 2014/10/22
# Chi-squared of fit: 4.52 DOF: 28 RMS: 0.09
# Min/Max residuals: -0.17 0.21
# Exact a, adot, b, bdot, g, gdot:
2.260502E-05 6.228883E-02 3.650993E-06 7.961553E-03 4.206068E-02 2.586880E-02
# Covariance matrix:
4.5624E-13 4.2179E-13 -2.8240E-14 5.8660E-14 7.7373E-13 1.0588E-12
4.2179E-13 1.1785E-12 -7.0041E-14 1.5528E-13 1.4554E-12 2.7572E-12
-2.8240E-14 -7.0041E-14 1.4543E-13 -2.9470E-14 -8.9803E-14 -1.6520E-13
5.8660E-14 1.5528E-13 -2.9470E-14 2.8584E-14 1.9312E-13 3.6576E-13
7.7373E-13 1.4554E-12 -8.9803E-14 1.9312E-13 2.1489E-12 3.4551E-12
1.0588E-12 2.7572E-12 -1.6520E-13 3.6576E-13 3.4551E-12 6.4967E-12
# lat0 lon0 xBary yBary zBary JD0
0.710527 46.784312 0.992010 0.002640 -0.202261 2453968.832664
# Heliocentric elements and errors
Epoch: 2453968.5000 = 2006/08/21
Mean Anomaly: 9.70855 +/- 0.004
Argument of Peri: 313.33136 +/- 0.007
Long of Asc Node: 38.86663 +/- 0.000
Inclination: 7.24475 +/- 0.000
Eccentricity: 0.64393014 +/- 0.0001
Semi-Major Axis: 57.14419722 +/- 0.0137
Time of Perihelion: 2449713.4131 +/- 2.2
Perihelion: 20.34732607 +/- 0.0061
Aphelion: 93.94106837 +/- 0.0229
Period (y) 431.9828 +/- 0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 17.13678171 +/- 0.0006
Ecliptic Y 16.79055461 +/- 0.0006
Ecliptic Z 0.29489681 +/- 0.0000
Ecliptic XDOT -0.00180182 +/- 0.0000
Ecliptic YDOT 0.00399384 +/- 0.0000
Ecliptic ZDOT 0.00053904 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 23.99310423 +/- 0.0006
Geocenter to KBO 23.77495791 +/- 0.0008
# Hcoef: 9.02
The following table shows the complete astrometric record for 06QG181. 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 (06QG181) followed by the observatory code and reference code for the source of the astrometry.
2006 08 21.33191 02 56 25.50 +17 31 57.2 21.6R 06QG181 807 Cs5502 2006 08 22.31581 02 56 25.58 +17 32 04.3 06QG181 807 Cs5502 2006 08 23.30379 02 56 25.52 +17 32 10.4 06QG181 807 Cs5502 2006 10 19.29748 02 52 23.03 +17 20 41.6 22.4R 06QG181 695 Ct0530 2006 10 19.30906 02 52 22.94 +17 20 41.3 06QG181 695 Ct0530 2006 10 20.22801 02 52 16.12 +17 20 16.7 06QG181 695 Ct0530 2006 10 20.23969 02 52 16.03 +17 20 16.4 06QG181 695 Ct0530 2006 10 20.35183 02 52 15.17 +17 20 13.6 06QG181 695 Ct0530 2006 10 20.36327 02 52 15.10 +17 20 13.0 06QG181 695 Ct0530 2008 12 22.25751 03 12 05.04 +19 40 53.3 06QG181 695 C~2i4J 2008 12 22.34023 03 12 04.58 +19 40 51.5 06QG181 695 C~2i4J 2008 12 22.34565 03 12 04.55 +19 40 51.4 06QG181 695 C~2i4J 2014 09 26.37438 04 32 58.04 +25 37 35.4 24.2R 06QG181 695 C~1T0Z 2014 09 26.41964 04 32 57.94 +25 37 35.6 06QG181 695 C~1T0Z 2014 09 26.46437 04 32 57.86 +25 37 35.7 06QG181 695 C~1T0Z 2014 10 22.36933 04 31 21.98 +25 38 16.6 23.8R 06QG181 G37 C~1T0Z 2014 10 22.46231 04 31 21.47 +25 38 16.3 06QG181 G37 C~1T0Z
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 0.21 0.00 -0.08
2 0.0027 0.00 -0.11 0.00 0.14
3 0.0054 0.00 -0.11 0.00 0.03
4 0.1614 0.00 0.13 0.00 -0.04
5 0.1615 0.00 0.09 0.00 -0.03
6 0.1640 0.00 -0.01 0.00 -0.03
7 0.1640 0.00 -0.04 0.00 -0.02
8 0.1643 0.00 -0.17 0.00 0.18
9 0.1644 0.00 0.08 0.00 -0.12
10 2.3379 0.00 0.02 0.00 0.07
11 2.3381 0.00 0.00 0.00 -0.04
12 2.3382 0.00 -0.00 0.00 -0.03
13 8.0987 0.00 0.01 0.00 0.12
14 8.0988 0.00 -0.10 0.00 0.03
15 8.0989 0.00 0.10 0.00 -0.15
16 8.1698 0.00 0.04 0.00 0.02
17 8.1701 0.00 -0.07 0.00 -0.01
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.
06QG181 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 58.842 58.843 58.842 ecceobj 0.654 0.654 0.653 incobj 7.222 7.222 7.222 qmin 20.032 20.063 20.034 qmax 115.688 98.835 99.798 amean 62.691 56.810 56.973 amin 57.449 53.873 53.081 amax 68.681 59.636 60.161 emean 0.665 0.639 0.640 emin 0.646 0.617 0.610 emax 0.685 0.657 0.659 imean 8.121 7.219 7.894 imin 6.639 6.740 6.805 imax 9.730 8.769 10.418 excite_mean 0.680 0.651 0.655 fracstop 0.087 0.050 0.054 cjmean 2.609 2.624 2.619 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 135.4 155.2 143.7 kozaiamp 179.8 180.0 179.9