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: 12UT177 # Created Sun Dec 22 02:09:22 2024 # Orbit generated from Bernstein formalism # Fitting 21 observations of 21 # Arc: 1.46y # First observation: 2011/09/01 # Last observation: 2013/02/16 Preliminary a, adot, b, bdot, g, gdot: -0.000010 0.015582 -0.000004 0.001193 0.019103 0.000000 # Chi-squared of fit: 6.72 DOF: 36 RMS: 0.10 # Min/Max residuals: -0.22 0.19 # Exact a, adot, b, bdot, g, gdot: 1.324561E-05 1.559969E-02 5.934161E-07 1.175087E-03 1.918943E-02 1.290353E-03 # Covariance matrix: 7.3611E-13 -4.1132E-13 6.0552E-15 2.2204E-14 2.7732E-13 2.0009E-11 -4.1132E-13 1.2149E-11 -5.4662E-14 9.2672E-13 1.5536E-11 7.1129E-10 6.0552E-15 -5.4662E-14 6.4614E-13 -5.7011E-13 -6.7957E-14 -2.5515E-12 2.2204E-14 9.2672E-13 -5.7011E-13 6.3283E-13 1.2498E-12 5.8025E-11 2.7732E-13 1.5536E-11 -6.7957E-14 1.2498E-12 2.0878E-11 9.6156E-10 2.0009E-11 7.1129E-10 -2.5515E-12 5.8025E-11 9.6156E-10 4.4887E-08 # lat0 lon0 xBary yBary zBary JD0 15.894897 35.005978 0.840062 0.151633 -0.532618 2455805.956666 # Heliocentric elements and errors Epoch: 2455800.5000 = 2011/08/27 Mean Anomaly: 143.54875 +/- 5.013 Argument of Peri: 283.30658 +/- 4.973 Long of Asc Node: 320.45209 +/- 0.011 Inclination: 16.35857 +/- 0.001 Eccentricity: 0.12180294 +/- 0.0057 Semi-Major Axis: 47.75799186 +/- 0.0641 Time of Perihelion: 2407731.5734 +/- 1676.0 Perihelion: 41.94092816 +/- 0.2790 Aphelion: 53.57505556 +/- 0.2826 Period (y) 330.0481 +/- 0.66 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.99132808 +/- 0.0098 Ecliptic Y 28.38254685 +/- 0.0068 Ecliptic Z 14.27215754 +/- 0.0034 Ecliptic XDOT -0.00117255 +/- 0.0000 Ecliptic YDOT 0.00190366 +/- 0.0000 Ecliptic ZDOT 0.00021173 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 52.65486759 +/- 0.0087 Geocenter to KBO 52.11200932 +/- 0.0124 # Hcoef: 7.56
The following table shows the complete astrometric record for 12UT177. 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 (12UT177) followed by the observatory code and reference code for the source of the astrometry.
2011 09 01.45590 01 47 02.631 +28 04 56.20 24.7r 12UT177 568 C~1CL9 2011 09 05.43843 01 46 52.207 +28 05 08.10 24.3r 12UT177 568 C~1CL9 2012 08 21.51640 01 51 04.362 +28 27 07.25 12UT177 568 C~1CL9 2012 08 23.50753 01 51 00.750 +28 27 25.71 24.6r 12UT177 568 C~1CL9 2012 08 24.47464 01 50 58.877 +28 27 34.02 24.6r 12UT177 568 C~1CL9 2012 08 28.45033 01 50 50.575 +28 28 02.90 25.3r 12UT177 568 C~1CL9 2012 08 28.48894 01 50 50.478 +28 28 03.11 24.9r 12UT177 568 C~1CL9 2012 08 28.53271 01 50 50.375 +28 28 03.52 25.0r 12UT177 568 C~1CL9 2012 09 13.38246 01 50 07.142 +28 28 38.13 24.7r 12UT177 568 C~1CL9 2012 09 14.46875 01 50 03.634 +28 28 35.75 24.9r 12UT177 568 C~1CL9 2012 10 19.43725 01 47 47.364 +28 22 10.53 12UT177 568 C~1CL9 2012 10 20.42535 01 47 43.156 +28 21 52.01 24.6r 12UT177 568 C~1CL9 2012 10 21.40942 01 47 38.924 +28 21 33.01 24.7r 12UT177 568 C~1CL9 2012 10 21.44796 01 47 38.788 +28 21 32.16 24.4r 12UT177 568 C~1CL9 2012 10 21.48638 01 47 38.613 +28 21 31.52 25.0r 12UT177 568 C~1CL9 2012 10 21.50363 01 47 38.537 +28 21 31.04 25.0r 12UT177 568 C~1CL9 2012 10 21.50789 01 47 38.509 +28 21 30.95 12UT177 568 C~1CL9 2012 11 16.31888 01 45 52.479 +28 11 27.21 12UT177 568 C~1CL9 2013 01 14.25068 01 43 54.907 +27 47 06.27 24.6r 12UT177 568 C~1CL9 2013 01 14.29036 01 43 54.907 +27 47 05.44 24.6r 12UT177 568 C~1CL9 2013 02 16.24351 01 44 47.569 +27 41 23.88 12UT177 568 C~1CL9
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 -0.08 0.00 0.08
2 0.0109 -123.79 0.07 62.02 0.04
3 0.9721 3459.41 0.18 71.98 -0.13
4 0.9776 3421.66 0.18 106.42 -0.13
5 0.9802 3401.63 -0.03 123.10 0.02
6 0.9911 3310.00 0.01 189.65 -0.12
7 0.9912 3308.88 -0.12 190.30 -0.12
8 0.9913 3307.77 -0.10 191.18 0.01
9 1.0347 2788.96 -0.05 430.20 0.00
10 1.0377 2745.00 -0.12 444.80 0.01
11 1.1334 930.82 -0.04 743.61 -0.13
12 1.1361 872.36 0.15 746.83 0.02
13 1.1388 813.43 -0.22 749.72 0.19
14 1.1389 811.45 0.13 749.59 -0.05
15 1.1390 809.07 0.08 749.85 0.09
16 1.1391 807.96 0.01 749.77 -0.03
17 1.1391 807.58 -0.11 749.82 0.01
18 1.2098 -717.10 0.15 706.91 0.04
19 1.3711 -2707.42 0.03 -66.91 0.07
20 1.3712 -2707.74 -0.11 -67.68 -0.00
21 1.4614 -2187.23 -0.00 -646.20 0.14
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.
12UT177 quality flag:2 Type: SCATEXTD 2:1E SCATEXTD axisobj 47.858 48.109 47.725 ecceobj 0.120 0.140 0.108 incobj 16.355 16.356 16.354 qmin 40.956 34.498 41.347 qmax 54.574 61.980 53.824 amean 47.564 47.796 47.433 amin 47.158 47.240 47.032 amax 48.059 48.493 47.873 emean 0.116 0.207 0.111 emin 0.098 0.127 0.097 emax 0.136 0.279 0.125 imean 17.793 15.408 17.765 imin 17.385 12.364 17.428 imax 18.183 17.904 18.032 excite_mean 0.327 0.341 0.325 fracstop 1.000 1.000 1.000 cjmean 3.009 3.003 3.010 libcent 0 -180.0 110.2 -180.0 libamp 0 -180.0 72.7 -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 178.5 247.6 188.6 kozaiamp 179.9 79.5 180.0