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: 05GH228
# Created Sat Apr 20 01:12:26 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 27 observations of 27
# Arc: 18.94y
# First observation: 2005/04/05
# Last observation: 2024/03/13
# Chi-squared of fit: 97.36 DOF: 48 RMS: 0.34
# Min/Max residuals: -0.67 0.88
# Exact a, adot, b, bdot, g, gdot:
1.736442E-05 3.821965E-02 -4.554600E-06 -1.171931E-02 3.292726E-02 -5.030393E-03
# Covariance matrix:
3.1210E-13 -4.7060E-14 -1.8707E-14 9.1417E-15 -1.6922E-13 -3.5052E-14
-4.7060E-14 1.4695E-14 7.8658E-15 -3.7238E-15 1.4406E-14 1.3305E-14
-1.8707E-14 7.8658E-15 1.1173E-13 -1.2094E-14 3.1806E-15 8.3766E-15
9.1417E-15 -3.7238E-15 -1.2094E-14 3.0550E-15 -1.8829E-15 -3.9541E-15
-1.6922E-13 1.4406E-14 3.1806E-15 -1.8829E-15 1.8420E-13 9.8858E-15
-3.5052E-14 1.3305E-14 8.3766E-15 -3.9541E-15 9.8858E-15 1.4031E-14
# lat0 lon0 xBary yBary zBary JD0
1.916191 123.932181 -0.945650 0.010585 -0.313421 2453465.808223
# Heliocentric elements and errors
Epoch: 2453466.5000 = 2005/04/06
Mean Anomaly: 335.73532 +/- 0.005
Argument of Peri: 209.33479 +/- 0.007
Long of Asc Node: 311.87026 +/- 0.000
Inclination: 17.12907 +/- 0.000
Eccentricity: 0.19273375 +/- 0.0000
Semi-Major Axis: 36.86986621 +/- 0.0024
Time of Perihelion: 2458978.1020 +/- 7.6
Perihelion: 29.76379860 +/- 0.0024
Aphelion: 43.97593383 +/- 0.0032
Period (y) 223.8801 +/- 0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -17.90778783 +/- 0.0002
Ecliptic Y 24.91549569 +/- 0.0003
Ecliptic Z 1.01537206 +/- 0.0000
Ecliptic XDOT -0.00242121 +/- 0.0000
Ecliptic YDOT -0.00210087 +/- 0.0000
Ecliptic ZDOT -0.00098782 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 30.70024853 +/- 0.0003
Geocenter to KBO 30.37009948 +/- 0.0004
# Hcoef: 8.32
The following table shows the complete astrometric record for 05GH228. 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 (05GH228) followed by the observatory code and reference code for the source of the astrometry.
2005 04 05.30748 08 26 56.56 +21 07 57.7 22.2i 05GH228 568 C~0W4h 2005 04 06.25340 08 26 55.33 +21 07 52.0 05GH228 568 C~0W4h 2005 04 06.31853 08 26 55.24 +21 07 51.6 24.3i 05GH228 568 C~0W4h 2006 01 31.37053 08 40 38.31 +19 46 07.2 05GH228 568 C~0W4h 2006 02 01.40821 08 40 31.15 +19 46 26.1 23.4r 05GH228 568 C~0W4h 2006 02 01.45481 08 40 30.82 +19 46 27.0 23.5r 05GH228 568 C~0W4h 2006 02 01.49483 08 40 30.54 +19 46 27.7 23.1r 05GH228 568 C~0W4h 2006 11 24.52391 08 54 49.60 +18 14 16.8 23.6i 05GH228 568 C~0W4h 2006 11 24.57566 08 54 49.50 +18 14 16.7 23.6i 05GH228 568 C~0W4h 2006 11 24.62784 08 54 49.42 +18 14 17.0 23.1i 05GH228 568 C~0W4h 2007 01 19.31997 08 50 31.50 +18 25 56.0 05GH228 568 C~0W4h 2007 01 19.36257 08 50 31.21 +18 25 56.9 23.4g 05GH228 568 C~0W4h 2007 01 19.39540 08 50 31.00 +18 25 57.6 23.3g 05GH228 568 C~0W4h 2007 01 20.38314 08 50 24.39 +18 26 17.9 23.4g 05GH228 568 C~0W4h 2007 01 20.40364 08 50 24.22 +18 26 18.6 23.6g 05GH228 568 C~0W4h 2007 11 08.43586 09 03 04.45 +16 58 40.0 21.9r 05GH228 695 C~0W4h 2007 11 09.42347 09 03 05.28 +16 58 29.7 21.7r 05GH228 695 C~0W4h 2010 01 21.34055 09 15 15.91 +14 27 03.5 05GH228 568 C~0W4h 2010 03 19.13984 09 09 26.15 +14 47 00.0 05GH228 675 C~0W4h 2010 03 19.17093 09 09 26.02 +14 47 00.4 05GH228 675 C~0W4h 2010 03 20.13230 09 09 21.72 +14 47 14.6 05GH228 675 C~0W4h 2010 03 20.16283 09 09 21.59 +14 47 15.0 05GH228 675 C~0W4h 2015 03 23.13159 09 49 44.46 +07 45 42.0 22.9R 05GH228 695 C~1Q3L 2015 03 23.19598 09 49 44.13 +07 45 43.7 05GH228 695 C~1Q3L 2015 03 23.25978 09 49 43.80 +07 45 45.3 05GH228 695 C~1Q3L 2024 03 13.271870 11 02 28.128 -05 44 37.19 23.4G 05GH228 G37 C~7wJn 2024 03 13.314360 11 02 27.906 -05 44 37.15 05GH228 G37 C~7wJn
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 -0.26
2 0.0026 0.00 0.07 0.00 -0.15
3 0.0028 0.00 0.04 0.00 -0.13
4 0.8243 0.00 -0.38 0.00 -0.15
5 0.8271 0.00 -0.17 0.00 -0.55
6 0.8272 0.00 -0.21 0.00 -0.52
7 0.8273 0.00 -0.19 0.00 -0.55
8 1.6378 0.00 0.29 0.00 0.53
9 1.6380 0.00 0.10 0.00 0.36
10 1.6381 0.00 0.24 0.00 0.60
11 1.7906 0.00 -0.28 0.00 -0.13
12 1.7907 0.00 -0.28 0.00 -0.10
13 1.7908 0.00 -0.08 0.00 -0.06
14 1.7935 0.00 0.42 0.00 0.59
15 1.7936 0.00 -0.03 0.00 0.88
16 2.5931 0.00 0.30 0.00 0.30
17 2.5958 0.00 0.22 0.00 0.22
18 4.7968 0.00 0.40 0.00 0.25
19 4.9523 0.00 -0.34 0.00 -0.12
20 4.9524 0.00 -0.13 0.00 -0.19
21 4.9550 0.00 0.00 0.00 -0.27
22 4.9551 0.00 0.13 0.00 -0.33
23 9.9626 0.00 -0.02 0.00 -0.13
24 9.9627 0.00 -0.07 0.00 -0.08
25 9.9629 0.00 -0.17 0.00 -0.10
26 18.9376 0.00 -0.33 0.00 0.78
27 18.9377 0.00 0.40 0.00 -0.67
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.
05GH228 quality flag:2 Type: CENTAURS 4:3E CENTAURS axisobj 36.757 36.756 36.757 ecceobj 0.188 0.188 0.188 incobj 17.155 17.155 17.155 qmin 29.533 28.578 28.561 qmax 44.218 45.017 44.984 amean 36.477 36.476 36.479 amin 35.968 35.968 35.966 amax 37.037 37.020 37.042 emean 0.103 0.177 0.139 emin 0.036 0.068 0.013 emax 0.194 0.217 0.217 imean 21.379 20.095 19.230 imin 18.606 18.606 15.403 imax 22.539 21.599 21.951 excite_mean 0.380 0.387 0.360 fracstop 1.000 1.000 1.000 cjmean 2.855 2.858 2.878 libcent 0 -180.0 181.6 -180.0 libamp 0 -180.0 177.3 -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 200.0 138.2 184.7 kozaiamp 180.0 179.9 180.0