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: 12UQ177 # Created Sat Apr 20 01:14:08 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 30 observations of 30 # Arc: 11.24y # First observation: 2011/09/01 # Last observation: 2022/11/28 # Chi-squared of fit: 12.38 DOF: 54 RMS: 0.11 # Min/Max residuals: -0.22 0.29 # Exact a, adot, b, bdot, g, gdot: 1.766117E-05 2.672980E-02 3.161025E-06 4.311448E-03 2.520296E-02 -5.577709E-03 # Covariance matrix: 1.6341E-13 -7.3250E-14 1.1086E-14 -1.3054E-14 5.5867E-14 -2.2352E-13 -7.3250E-14 9.9645E-14 -1.4567E-14 1.7155E-14 3.1848E-14 3.0912E-13 1.1086E-14 -1.4567E-14 7.0126E-14 -1.3274E-14 -2.9430E-15 -4.8294E-14 -1.3054E-14 1.7155E-14 -1.3274E-14 8.6887E-15 3.4675E-15 5.6872E-14 5.5867E-14 3.1848E-14 -2.9430E-15 3.4675E-15 1.2108E-13 7.9233E-14 -2.2352E-13 3.0912E-13 -4.8294E-14 5.6872E-14 7.9233E-14 1.0209E-12 # lat0 lon0 xBary yBary zBary JD0 17.481775 31.868906 0.808842 0.179748 -0.570845 2455805.923946 # Heliocentric elements and errors Epoch: 2455806.5000 = 2011/09/02 Mean Anomaly: 329.45486 +/- 0.005 Argument of Peri: 119.18363 +/- 0.009 Long of Asc Node: 330.10795 +/- 0.000 Inclination: 19.59217 +/- 0.000 Eccentricity: 0.31647666 +/- 0.0000 Semi-Major Axis: 52.41461768 +/- 0.0040 Time of Perihelion: 2467566.7517 +/- 14.5 Perihelion: 35.82661436 +/- 0.0035 Aphelion: 69.00262099 +/- 0.0057 Period (y) 379.4782 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 33.07900982 +/- 0.0004 Ecliptic Y 19.61180946 +/- 0.0003 Ecliptic Z 11.91948213 +/- 0.0002 Ecliptic XDOT -0.00214657 +/- 0.0000 Ecliptic YDOT 0.00209197 +/- 0.0000 Ecliptic ZDOT 0.00026477 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.26077828 +/- 0.0004 Geocenter to KBO 39.67804532 +/- 0.0005 # Hcoef: 8.02
The following table shows the complete astrometric record for 12UQ177. 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 (12UQ177) followed by the observatory code and reference code for the source of the astrometry.
2011 09 01.42318 01 31 41.352 +28 25 11.96 23.9r 12UQ177 568 C~1CL8 2011 09 01.46869 01 31 41.213 +28 25 12.28 24.3r 12UQ177 568 C~1CL8 2011 09 01.51133 01 31 41.062 +28 25 12.57 23.8r 12UQ177 568 C~1CL8 2011 09 05.45125 01 31 27.050 +28 25 33.94 24.0r 12UQ177 568 C~1CL8 2011 11 24.35514 01 24 58.798 +27 58 36.07 23.9r 12UQ177 568 C~1CL9 2011 11 30.31101 01 24 36.417 +27 55 05.35 23.9r 12UQ177 568 C~1CL9 2011 12 01.35919 01 24 32.763 +27 54 28.23 24.0r 12UQ177 568 C~1CL9 2012 01 28.29635 01 23 59.935 +27 28 49.78 24.2r 12UQ177 568 C~1CL9 2012 08 18.49191 01 38 23.045 +29 11 09.04 24.1r 12UQ177 568 C~1CL9 2012 08 18.53098 01 38 22.959 +29 11 09.84 24.4r 12UQ177 568 C~1CL9 2012 08 21.52493 01 38 16.162 +29 11 59.81 24.0r 12UQ177 568 C~1CL9 2012 08 23.57612 01 38 10.987 +29 12 30.57 23.9r 12UQ177 568 C~1CL9 2012 08 28.45900 01 37 57.243 +29 13 31.75 23.9r 12UQ177 568 C~1CL9 2012 09 12.38956 01 37 02.984 +29 14 53.32 24.1r 12UQ177 568 C~1CL9 2012 09 14.42586 01 36 54.319 +29 14 52.00 24.0r 12UQ177 568 C~1CL9 2012 10 19.36449 01 33 56.605 +29 07 05.65 23.8r 12UQ177 568 C~1CL9 2012 10 19.40727 01 33 56.375 +29 07 04.50 23.8r 12UQ177 568 C~1CL9 2012 10 20.35652 01 33 51.186 +29 06 41.29 23.8r 12UQ177 568 C~1CL9 2012 10 20.39499 01 33 50.980 +29 06 40.38 23.9r 12UQ177 568 C~1CL9 2012 10 20.43389 01 33 50.758 +29 06 39.40 23.9r 12UQ177 568 C~1CL9 2012 10 21.41799 01 33 45.392 +29 06 14.86 12UQ177 568 C~1CL9 2012 11 14.35465 01 31 41.227 +28 54 10.74 23.9r 12UQ177 568 C~1CL9 2013 01 14.27738 01 29 28.423 +28 21 47.39 24.2r 12UQ177 568 C~1CL9 2013 02 04.22689 01 30 12.101 +28 16 31.70 23.9r 12UQ177 568 C~1CL9 2013 02 06.24045 01 30 18.718 +28 16 16.46 24.4r 12UQ177 568 C~1CL9 2013 02 14.23752 01 30 48.886 +28 15 44.63 24.0r 12UQ177 568 C~1CL9 2015 11 08.13277 01 51 28.53 +31 25 36.2 23.7R 12UQ177 G37 C~1ddR 2015 11 08.20431 01 51 28.11 +31 25 34.4 12UQ177 G37 C~1ddR 2022 11 28.264050 02 41 10.686 +36 28 26.98 24.2G 12UQ177 G37 C~6745 2022 11 28.363450 02 41 10.112 +36 28 23.71 12UQ177 G37 C~6745
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 -0.15 0.00 -0.16
2 0.0001 0.00 0.14 0.00 -0.17
3 0.0002 0.00 0.11 0.00 -0.18
4 0.0110 0.00 0.08 0.00 -0.13
5 0.2298 0.00 0.00 0.00 -0.01
6 0.2461 0.00 0.00 0.00 0.05
7 0.2490 0.00 0.01 0.00 -0.02
8 0.4076 0.00 0.10 0.00 0.18
9 0.9639 0.00 0.00 0.00 0.00
10 0.9640 0.00 0.01 0.00 0.10
11 0.9722 0.00 0.21 0.00 0.06
12 0.9778 0.00 -0.12 0.00 0.12
13 0.9912 0.00 0.18 0.00 0.09
14 1.0321 0.00 -0.20 0.00 -0.02
15 1.0377 0.00 -0.15 0.00 0.00
16 1.1333 0.00 -0.15 0.00 0.11
17 1.1334 0.00 -0.02 0.00 -0.01
18 1.1360 0.00 -0.11 0.00 0.00
19 1.1361 0.00 0.01 0.00 0.03
20 1.1362 0.00 -0.07 0.00 0.02
21 1.1389 0.00 0.02 0.00 0.07
22 1.2045 0.00 -0.05 0.00 -0.08
23 1.3713 0.00 -0.07 0.00 -0.10
24 1.4286 0.00 -0.22 0.00 0.10
25 1.4341 0.00 -0.09 0.00 -0.03
26 1.4560 0.00 0.29 0.00 -0.03
27 4.1854 0.00 0.21 0.00 -0.22
28 4.1856 0.00 -0.14 0.00 0.15
29 11.2412 0.00 -0.03 0.00 -0.01
30 11.2415 0.00 0.02 0.00 -0.02
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.
12UQ177 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 52.552 52.551 52.552 ecceobj 0.317 0.317 0.317 incobj 19.583 19.583 19.583 qmin 34.879 34.883 34.881 qmax 69.820 69.931 70.060 amean 51.994 52.031 52.051 amin 51.451 51.465 51.500 amax 52.643 52.697 52.726 emean 0.308 0.308 0.309 emin 0.290 0.290 0.290 emax 0.327 0.328 0.329 imean 20.894 20.907 20.913 imin 20.130 20.119 20.128 imax 21.552 21.563 21.568 excite_mean 0.471 0.472 0.472 fracstop 1.000 1.000 1.000 cjmean 2.915 2.915 2.915 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 185.9 185.3 185.0 kozaiamp 179.9 179.9 180.0