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: 08RG167
# Created Sun Dec 22 02:09:02 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 40 observations of 40
# Arc: 3.32y
# First observation: 2008/09/06
# Last observation: 2011/12/31
# Chi-squared of fit: 166.73 DOF: 74 RMS: 0.36
# Min/Max residuals: -0.92 1.08
# Exact a, adot, b, bdot, g, gdot:
4.661163E-05 5.493046E-01 -6.033615E-06 -7.959508E-02 1.799434E-01 -8.497694E-02
# Covariance matrix:
1.5983E-13 -1.0053E-13 -5.7014E-15 1.2627E-14 5.7355E-14 -3.4307E-14
-1.0053E-13 1.3029E-13 1.3971E-14 -1.7336E-14 3.2559E-14 4.6582E-15
-5.7014E-15 1.3971E-14 9.3913E-14 -4.0483E-14 9.8481E-15 -1.7281E-15
1.2627E-14 -1.7336E-14 -4.0483E-14 2.5728E-14 9.7447E-16 -3.3339E-15
5.7355E-14 3.2559E-14 9.8481E-15 9.7447E-16 1.9083E-13 -7.3728E-14
-3.4307E-14 4.6582E-15 -1.7281E-15 -3.3339E-15 -7.3728E-14 3.1397E-14
# lat0 lon0 xBary yBary zBary JD0
0.458171 -5.134988 0.186191 0.007911 -0.987823 2454715.801364
# Heliocentric elements and errors
Epoch: 2454716.5000 = 2008/09/07
Mean Anomaly: 355.20228 +/- 0.016
Argument of Peri: 204.04390 +/- 0.000
Long of Asc Node: 175.86580 +/- 0.000
Inclination: 8.29187 +/- 0.000
Eccentricity: 0.63201604 +/- 0.0001
Semi-Major Axis: 17.06188135 +/- 0.0000
Time of Perihelion: 2455059.5610 +/- 1.2
Perihelion: 6.27849867 +/- 0.0021
Aphelion: 27.84526404 +/- 0.0021
Period (y) 70.4772 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 6.50350362 +/- 0.0000
Ecliptic Y -0.77577819 +/- 0.0000
Ecliptic Z 0.04443643 +/- 0.0000
Ecliptic XDOT -0.00052385 +/- 0.0000
Ecliptic YDOT 0.00844087 +/- 0.0000
Ecliptic ZDOT -0.00122146 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 6.54980864 +/- 0.0000
Geocenter to KBO 5.55737549 +/- 0.0000
# Hcoef: 13.10
The following table shows the complete astrometric record for 08RG167. 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 (08RG167) followed by the observatory code and reference code for the source of the astrometry.
2008 09 06.30061 23 40 25.21 -01 37 10.7 20.3V 08RG167 G96 C~3pM6 2008 09 06.30647 23 40 25.06 -01 37 11.6 21.3V 08RG167 G96 C~3pM6 2008 09 06.31219 23 40 24.99 -01 37 12.9 21.4V 08RG167 G96 C~3pM6 2008 09 06.31786 23 40 24.88 -01 37 13.5 21.2V 08RG167 G96 C~3pM6 2008 11 20.215855 23 26 08.61 -04 08 24.1 21.7V 08RG167 645 C~3qEb 2008 11 20.216684 23 26 08.61 -04 08 24.2 21.4V 08RG167 645 C~3qEb 2008 11 20.219172 23 26 08.62 -04 08 24.1 22.2V 08RG167 645 C~3qEb 2009 01 16.071342 23 44 44.82 -02 42 56.9 08RG167 645 C~3qEb 2009 01 16.072172 23 44 44.86 -02 42 57.0 08RG167 645 C~3qEb 2009 01 16.074659 23 44 44.93 -02 42 56.4 08RG167 645 C~3qEb 2009 09 18.36069 01 47 07.37 +06 25 58.8 21.0V 08RG167 691 C~3pM6 2009 09 18.37832 01 47 07.21 +06 25 55.4 21.2V 08RG167 691 C~3pM6 2009 09 18.39594 01 47 06.94 +06 25 53.8 21.1V 08RG167 691 C~3pM6 2009 09 26.35123 01 45 11.86 +06 05 54.2 21.0V 08RG167 691 C~3pM6 2009 09 26.36884 01 45 11.57 +06 05 51.4 21.3V 08RG167 691 C~3pM6 2009 09 26.38644 01 45 11.28 +06 05 48.8 21.1V 08RG167 691 C~3pM6 2009 10 15.36412 01 39 25.30 +05 14 28.2 20.9V 08RG167 G96 C~3pM6 2009 10 15.37010 01 39 25.12 +05 14 27.5 20.9V 08RG167 G96 C~3pM6 2009 10 15.37606 01 39 25.02 +05 14 26.8 20.9V 08RG167 G96 C~3pM6 2009 10 15.38194 01 39 24.91 +05 14 25.4 20.8V 08RG167 G96 C~3pM6 2009 11 16.24618 01 29 50.24 +04 01 59.9 21.8V 08RG167 G96 C~3pM6 2009 11 16.25351 01 29 50.13 +04 01 59.7 21.9V 08RG167 G96 C~3pM6 2009 11 16.26096 01 29 50.02 +04 01 58.4 21.4V 08RG167 G96 C~3pM6 2009 11 16.26854 01 29 49.95 +04 01 57.9 21.4V 08RG167 G96 C~3pM6 2010 11 12.35689 03 38 49.41 +10 58 34.7 21.2V 08RG167 G96 C~3pM6 2010 11 12.36436 03 38 49.34 +10 58 33.7 22.2V 08RG167 G96 C~3pM6 2010 11 12.37193 03 38 49.12 +10 58 34.1 21.1V 08RG167 G96 C~3pM6 2010 11 12.37941 03 38 48.94 +10 58 32.5 21.0V 08RG167 G96 C~3pM6 2010 12 02.21066 03 31 50.70 +10 29 43.6 21.7V 08RG167 G96 C~3pM6 2010 12 02.21766 03 31 50.55 +10 29 42.7 21.4V 08RG167 G96 C~3pM6 2010 12 02.22472 03 31 50.37 +10 29 42.7 20.6V 08RG167 G96 C~3pM6 2010 12 02.23181 03 31 50.26 +10 29 41.9 20.9V 08RG167 G96 C~3pM6 2010 12 10.18768 03 29 20.50 +10 21 57.1 21.5V 08RG167 G96 C~3pM6 2010 12 10.19527 03 29 20.32 +10 21 57.3 21.5V 08RG167 G96 C~3pM6 2010 12 10.20282 03 29 20.18 +10 21 56.1 20.8V 08RG167 G96 C~3pM6 2010 12 10.21037 03 29 20.11 +10 21 55.7 21.1V 08RG167 G96 C~3pM6 2011 12 31.20336 05 06 45.25 +13 29 25.8 21.4V 08RG167 G96 C~3pM6 2011 12 31.21080 05 06 45.10 +13 29 25.8 21.6V 08RG167 G96 C~3pM6 2011 12 31.21834 05 06 44.92 +13 29 25.9 22.1V 08RG167 G96 C~3pM6 2011 12 31.22590 05 06 44.78 +13 29 25.9 22.2V 08RG167 G96 C~3pM6
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 0.39 0.00 -0.05
2 0.0000 0.00 -0.22 0.00 0.02
3 0.0000 0.00 0.32 0.00 -0.34
4 0.0000 0.00 0.25 0.00 -0.00
5 0.2051 0.00 0.07 0.00 -0.35
6 0.2051 0.00 0.02 0.00 -0.44
7 0.2051 0.00 0.01 0.00 -0.31
8 0.3608 0.00 -0.16 0.00 -0.15
9 0.3608 0.00 0.04 0.00 -0.39
10 0.3608 0.00 -0.11 0.00 -0.24
11 1.0323 0.00 -0.92 0.00 0.65
12 1.0324 0.00 0.24 0.00 -0.21
13 1.0324 0.00 -0.25 0.00 0.73
14 1.0542 0.00 -0.40 0.00 0.15
15 1.0543 0.00 -0.39 0.00 0.10
16 1.0543 0.00 -0.39 0.00 0.25
17 1.1063 0.00 0.83 0.00 -0.21
18 1.1063 0.00 -0.05 0.00 0.06
19 1.1063 0.00 0.27 0.00 0.33
20 1.1063 0.00 0.40 0.00 -0.11
21 1.1936 0.00 -0.19 0.00 -0.11
22 1.1936 0.00 -0.25 0.00 0.39
23 1.1936 0.00 -0.28 0.00 -0.19
24 1.1936 0.00 0.31 0.00 0.04
25 2.1822 0.00 -0.32 0.00 0.01
26 2.1822 0.00 1.08 0.00 -0.22
27 2.1823 0.00 0.26 0.00 0.97
28 2.1823 0.00 0.01 0.00 0.14
29 2.2366 0.00 0.17 0.00 0.15
30 2.2366 0.00 0.06 0.00 -0.27
31 2.2366 0.00 -0.48 0.00 0.20
32 2.2366 0.00 0.04 0.00 -0.12
33 2.2584 0.00 0.16 0.00 0.00
34 2.2584 0.00 -0.47 0.00 0.57
35 2.2585 0.00 -0.52 0.00 -0.27
36 2.2585 0.00 0.49 0.00 -0.30
37 3.3153 0.00 0.28 0.00 -0.41
38 3.3153 0.00 0.15 0.00 -0.44
39 3.3153 0.00 -0.39 0.00 -0.37
40 3.3153 0.00 -0.33 0.00 -0.40
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.
08RG167 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 16.941 16.941 16.942 ecceobj 0.631 0.631 0.631 incobj 8.297 8.297 8.297 qmin 6.250 6.250 6.250 qmax 30.138 31.360 37.938 amean 17.428 17.128 19.631 amin 16.941 15.788 16.942 amax 18.310 18.926 22.421 emean 0.633 0.621 0.658 emin 0.626 0.589 0.628 emax 0.646 0.657 0.692 imean 7.878 8.746 9.469 imin 7.853 7.853 7.646 imax 7.906 9.576 11.186 excite_mean 0.647 0.639 0.678 fracstop 0.000 0.001 0.002 cjmean 2.898 2.931 2.741 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 213.8 234.0 246.3 kozaiamp 10.1 27.1 36.5