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: 05GC187 # Created Sun Dec 22 02:08:49 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 20 observations of 20 # Arc: 10.92y # First observation: 2005/04/10 # Last observation: 2016/03/13 # Chi-squared of fit: 52.50 DOF: 34 RMS: 0.29 # Min/Max residuals: -1.23 0.70 # Exact a, adot, b, bdot, g, gdot: 1.779425E-05 2.837639E-02 -2.349191E-07 -1.028208E-03 2.651971E-02 7.505643E-04 # Covariance matrix: 3.4902E-13 -1.2396E-13 -3.4319E-15 2.8375E-15 3.2712E-13 -2.4873E-13 -1.2396E-13 1.8827E-13 2.8437E-15 -6.0883E-15 -5.9264E-14 5.4081E-13 -3.4319E-15 2.8437E-15 9.8188E-14 -1.1800E-14 -3.6062E-15 7.6847E-15 2.8375E-15 -6.0883E-15 -1.1800E-14 7.0407E-15 5.0132E-16 -1.8587E-14 3.2712E-13 -5.9264E-14 -3.6062E-15 5.0132E-16 4.8430E-13 -3.9214E-14 -2.4873E-13 5.4081E-13 7.6847E-15 -1.8587E-14 -3.9214E-14 1.6526E-12 # lat0 lon0 xBary yBary zBary JD0 -1.222781 -147.732803 0.202067 -0.020776 -0.976932 2453470.869283 # Heliocentric elements and errors Epoch: 2453470.5000 = 2005/04/10 Mean Anomaly: 8.43869 +/- 0.015 Argument of Peri: 198.81293 +/- 0.020 Long of Asc Node: 2.10960 +/- 0.002 Inclination: 2.39280 +/- 0.000 Eccentricity: 0.13104098 +/- 0.0001 Semi-Major Axis: 44.42764864 +/- 0.0063 Time of Perihelion: 2450935.0750 +/- 4.6 Perihelion: 38.60580598 +/- 0.0071 Aphelion: 50.24949129 +/- 0.0084 Period (y) 296.1339 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.81531191 +/- 0.0008 Ecliptic Y -20.47820880 +/- 0.0005 Ecliptic Z -0.80465705 +/- 0.0000 Ecliptic XDOT 0.00150077 +/- 0.0000 Ecliptic YDOT -0.00252437 +/- 0.0000 Ecliptic ZDOT -0.00010772 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.68912127 +/- 0.0008 Geocenter to KBO 37.70781326 +/- 0.0010 # Hcoef: 7.07
The following table shows the complete astrometric record for 05GC187. 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 (05GC187) followed by the observatory code and reference code for the source of the astrometry.
2005 04 10.36854 13 58 35.98 -13 24 30.4 23.0R 05GC187 695 Cn3379 2005 04 11.33662 13 58 31.25 -13 24 06.2 05GC187 695 Cn3380 2005 04 11.42230 13 58 30.84 -13 24 03.8 05GC187 695 Cn3380 2005 05 09.18071 13 56 14.04 -13 12 00.1 22.0R 05GC187 807 Cn5373 2005 05 10.17511 13 56 09.37 -13 11 35.0 05GC187 807 Cn5373 2005 05 10.25976 13 56 08.96 -13 11 32.4 05GC187 807 Cn5373 2005 05 10.31720 13 56 08.69 -13 11 31.4 05GC187 807 Cn5373 2005 06 07.16410 13 54 17.23 -13 01 12.6 05GC187 304 Cn6545 2005 06 07.20778 13 54 17.08 -13 01 11.7 05GC187 304 Cn6545 2005 07 09.06262 13 53 19.47 -12 55 20.0 23.2R 05GC187 304 Cn8899 2005 07 09.11595 13 53 19.45 -12 55 19.8 05GC187 304 Cn8899 2005 08 07.99805 13 53 52.02 -12 57 36.2 21.7R 05GC187 807 Co4001 2005 08 09.00612 13 53 54.60 -12 57 48.9 05GC187 807 Co4001 2005 08 09.99889 13 53 57.23 -12 58 01.9 05GC187 807 Co4001 2007 05 08.16529 14 08 47.42 -14 26 04.2 05GC187 304 Cy5743 2007 05 08.24723 14 08 47.01 -14 26 02.3 05GC187 304 Cy5743 2008 04 05.30120 14 17 41.46 -15 14 43.7 23.1R 05GC187 688 Cy5743 2008 04 05.39182 14 17 41.16 -15 14 42.2 05GC187 688 Cy5743 2016 03 13.41976 15 09 37.05 -19 32 47.9 23.0R 05GC187 G37 C~1pPk 2016 03 13.51025 15 09 36.84 -19 32 47.6 05GC187 G37 C~1pPk
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 -0.20 0.00 -0.01
2 0.0027 0.00 -0.10 0.00 -0.26
3 0.0029 0.00 0.16 0.00 -0.04
4 0.0789 0.00 0.04 0.00 -0.02
5 0.0816 0.00 0.10 0.00 -0.23
6 0.0818 0.00 -0.00 0.00 0.21
7 0.0820 0.00 0.03 0.00 -0.26
8 0.1582 0.00 -0.02 0.00 0.11
9 0.1584 0.00 -0.17 0.00 0.22
10 0.2456 0.00 -0.21 0.00 0.37
11 0.2457 0.00 -0.17 0.00 0.38
12 0.3275 0.00 0.22 0.00 -0.10
13 0.3303 0.00 0.17 0.00 -0.05
14 0.3330 0.00 0.07 0.00 0.03
15 2.0747 0.00 0.27 0.00 -0.04
16 2.0750 0.00 0.22 0.00 -0.21
17 2.9868 0.00 -1.23 0.00 0.19
18 2.9871 0.00 0.70 0.00 -0.29
19 10.9242 0.00 -0.05 0.00 0.16
20 10.9244 0.00 0.08 0.00 -0.10
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.
05GC187 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.810 43.810 43.810 ecceobj 0.119 0.119 0.119 incobj 2.403 2.403 2.403 qmin 37.979 37.977 37.972 qmax 50.796 50.733 50.806 amean 44.187 44.187 44.187 amin 43.810 43.810 43.810 amax 44.604 44.600 44.604 emean 0.120 0.121 0.121 emin 0.103 0.103 0.103 emax 0.139 0.138 0.139 imean 3.010 3.010 3.009 imin 2.071 2.075 2.072 imax 3.862 3.857 3.861 excite_mean 0.132 0.132 0.132 fracstop 1.000 1.000 1.000 cjmean 3.083 3.083 3.083 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 172.8 173.0 172.9 kozaiamp 180.0 179.9 180.0