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: 06QA181 # Created Wed Dec 25 02:08:49 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 68 observations of 68 # Arc: 12.06y # First observation: 2006/08/21 # Last observation: 2018/09/11 # Chi-squared of fit: 38.23 DOF: 130 RMS: 0.13 # Min/Max residuals: -0.44 0.44 # Exact a, adot, b, bdot, g, gdot: 1.574836E-05 2.482050E-02 -1.794981E-06 -1.924675E-03 2.495487E-02 -1.530897E-03 # Covariance matrix: 2.8358E-13 -5.7871E-14 -5.8302E-15 2.6994E-15 -4.9764E-15 -1.1536E-13 -5.7871E-14 2.1607E-14 3.1241E-15 -1.4720E-15 1.7364E-14 6.2851E-14 -5.8302E-15 3.1241E-15 2.1200E-13 -2.5089E-14 2.5124E-15 1.0726E-14 2.6994E-15 -1.4720E-15 -2.5089E-14 3.3518E-15 -1.2819E-15 -5.0451E-15 -4.9764E-15 1.7364E-14 2.5124E-15 -1.2819E-15 7.0505E-14 5.4540E-14 -1.1536E-13 6.2851E-14 1.0726E-14 -5.0451E-15 5.4540E-14 2.1543E-13 # lat0 lon0 xBary yBary zBary JD0 -1.885553 2.272247 0.567232 -0.027473 -0.838180 2453968.718844 # Heliocentric elements and errors Epoch: 2453968.5000 = 2006/08/21 Mean Anomaly: 297.17716 +/- 0.016 Argument of Peri: 273.83729 +/- 0.019 Long of Asc Node: 159.05795 +/- 0.001 Inclination: 4.83381 +/- 0.000 Eccentricity: 0.08013092 +/- 0.0000 Semi-Major Axis: 42.23087930 +/- 0.0017 Time of Perihelion: 2471461.2735 +/- 6.8 Perihelion: 38.84687997 +/- 0.0018 Aphelion: 45.61487864 +/- 0.0021 Period (y) 274.4438 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 40.87657667 +/- 0.0004 Ecliptic Y 1.05149322 +/- 0.0000 Ecliptic Z -1.31858822 +/- 0.0000 Ecliptic XDOT -0.00027811 +/- 0.0000 Ecliptic YDOT 0.00270913 +/- 0.0000 Ecliptic ZDOT -0.00020556 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.91139987 +/- 0.0004 Geocenter to KBO 40.07241072 +/- 0.0004 # Hcoef: 7.50
The following table shows the complete astrometric record for 06QA181. 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 (06QA181) followed by the observatory code and reference code for the source of the astrometry.
2006 08 21.21809 00 11 20.26 -00 49 35.6 22.5R 06QA181 807 Cs5502 2006 08 21.29189 00 11 19.99 -00 49 37.5 06QA181 807 Cs5502 2006 08 22.19830 00 11 16.76 -00 50 01.1 06QA181 807 Cs5502 2006 10 19.23950 00 07 08.32 -01 18 16.3 23.5R 06QA181 695 Ct0530 2006 10 19.34685 00 07 07.83 -01 18 19.2 06QA181 695 Ct0530 2006 10 20.29702 00 07 04.04 -01 18 44.8 06QA181 695 Ct0530 2013 08 05.48538 00 50 11.877 +02 32 37.58 23.8r 06QA181 568 C~2ReX 2013 08 05.53383 00 50 11.803 +02 32 36.78 24.3r 06QA181 568 C~2ReX 2013 08 08.46429 00 50 06.222 +02 31 47.54 24.0r 06QA181 568 C~2ReX 2013 08 08.50311 00 50 06.120 +02 31 46.97 23.8r 06QA181 568 C~2ReX 2013 08 31.54913 00 49 00.328 +02 23 14.61 23.5r 06QA181 568 C~2ReX 2013 08 31.59296 00 49 00.166 +02 23 13.17 23.6r 06QA181 568 C~2ReX 2013 08 31.59772 00 49 00.159 +02 23 13.28 23.8r 06QA181 568 C~2ReX 2013 08 31.60285 00 49 00.134 +02 23 13.03 23.3r 06QA181 568 C~2ReX 2013 08 31.60762 00 49 00.122 +02 23 12.97 23.5r 06QA181 568 C~2ReX 2013 08 31.61256 00 49 00.099 +02 23 12.83 23.2r 06QA181 568 C~2ReX 2013 09 01.43491 00 48 57.141 +02 22 51.11 23.6r 06QA181 568 C~2ReX 2013 09 01.47388 00 48 56.987 +02 22 50.13 23.6r 06QA181 568 C~2ReX 2013 09 05.41441 00 48 42.219 +02 21 03.24 23.7r 06QA181 568 C~2ReX 2013 09 05.45322 00 48 42.076 +02 21 02.33 24.0r 06QA181 568 C~2ReX 2013 09 29.34540 00 46 59.516 +02 09 15.38 23.6r 06QA181 568 C~2ReX 2013 09 29.38422 00 46 59.342 +02 09 14.29 23.8r 06QA181 568 C~2ReX 2013 09 29.42805 00 46 59.119 +02 09 12.86 23.9r 06QA181 568 C~2ReX 2013 10 02.41909 00 46 45.366 +02 07 41.58 23.7r 06QA181 568 C~2ReX 2013 10 04.51065 00 46 35.708 +02 06 37.86 23.1r 06QA181 568 C~2ReX 2013 10 09.47694 00 46 12.766 +02 04 07.78 23.4r 06QA181 568 C~2ReX 2013 10 13.14590 00 45 55.921 +02 02 19.14 23.0i 06QA181 W84 C~4yFk 2013 10 13.14731 00 45 55.919 +02 02 19.04 23.0z 06QA181 W84 C~4yFk 2013 11 08.18263 00 44 06.186 +01 50 57.18 23.5r 06QA181 W84 C~4yFk 2013 11 08.18400 00 44 06.182 +01 50 57.37 23.0i 06QA181 W84 C~4yFk 2013 11 22.10101 00 43 21.130 +01 46 37.61 23.4r 06QA181 W84 C~4yFk 2013 11 27.27126 00 43 07.848 +01 45 25.54 23.5r 06QA181 568 C~2ReX 2013 11 27.31577 00 43 07.738 +01 45 24.97 23.5r 06QA181 568 C~2ReX 2013 12 05.23284 00 42 51.561 +01 44 04.10 06QA181 568 C~2ReX 2014 06 25.58497 00 55 37.028 +03 03 50.66 23.6r 06QA181 568 C~2ReX 2014 06 26.58383 00 55 38.938 +03 03 57.27 23.7r 06QA181 568 C~2ReX 2014 07 23.55975 00 55 56.911 +03 03 24.20 23.7r 06QA181 568 C~2ReX 2014 07 27.53892 00 55 54.078 +03 02 45.54 24.0r 06QA181 568 C~2ReX 2014 08 18.32090 00 55 15.069 +02 56 53.82 22.8i 06QA181 W84 C~4yFk 2014 08 24.49378 00 54 57.440 +02 54 35.96 23.7r 06QA181 568 C~2ReX 2014 08 28.46592 00 54 44.717 +02 53 00.11 23.5r 06QA181 568 C~2ReX 2014 10 21.23370 00 50 54.154 +02 27 01.71 23.5r 06QA181 W84 C~4yFk 2014 10 23.31499 00 50 44.911 +02 26 03.49 23.5r 06QA181 568 C~2ReX 2014 10 23.31888 00 50 44.885 +02 26 03.31 24.0r 06QA181 568 C~2ReX 2014 10 27.22247 00 50 27.839 +02 24 17.89 23.5r 06QA181 W84 C~4yFk 2014 10 27.28165 00 50 27.603 +02 24 16.09 23.4r 06QA181 568 C~2ReX 2014 10 27.28553 00 50 27.585 +02 24 16.02 23.3r 06QA181 568 C~2ReX 2014 11 14.06558 00 49 18.109 +02 17 20.38 23.6r 06QA181 W84 C~4yFk 2014 11 24.29111 00 48 46.385 +02 14 22.27 23.5r 06QA181 568 C~2ReY 2014 11 24.29560 00 48 46.371 +02 14 22.19 23.6r 06QA181 568 C~2ReY 2014 11 25.28967 00 48 43.673 +02 14 07.67 23.8r 06QA181 568 C~2ReY 2014 11 25.31746 00 48 43.610 +02 14 07.23 23.6r 06QA181 568 C~2ReY 2014 12 17.33123 00 48 04.954 +02 11 09.41 23.1r 06QA181 568 C~2ReY 2015 01 18.23551 00 48 28.103 +02 15 26.80 23.5r 06QA181 568 C~2ReY 2015 01 18.25083 00 48 28.138 +02 15 27.07 23.7r 06QA181 568 C~2ReY 2016 09 01.36467 01 05 38.692 +03 47 42.04 23.1i 06QA181 W84 C~4yFk 2016 09 01.36604 01 05 38.693 +03 47 42.16 23.5r 06QA181 W84 C~4yFk 2016 11 05.16584 01 00 57.588 +03 17 05.37 24.1r 06QA181 W84 C~4yFk 2016 11 05.16722 01 00 57.582 +03 17 05.26 23.2i 06QA181 W84 C~4yFk 2016 11 06.16827 01 00 53.519 +03 16 41.45 23.1r 06QA181 W84 C~4yFk 2016 11 06.16964 01 00 53.519 +03 16 41.37 22.8i 06QA181 W84 C~4yFk 2017 08 28.28950 01 11 28.948 +04 17 37.74 23.7r 06QA181 W84 C~4yFk 2017 08 28.29088 01 11 28.949 +04 17 37.60 23.1i 06QA181 W84 C~4yFk 2017 09 14.32230 01 10 27.855 +04 10 16.71 22.8i 06QA181 W84 C~4yFk 2017 09 18.30613 01 10 11.420 +04 08 23.37 23.1r 06QA181 W84 C~4yFk 2017 09 27.24045 01 09 32.379 +04 04 00.35 23.2z 06QA181 W84 C~4yFk 2018 09 11.32288 01 16 19.319 +04 39 59.87 22.6i 06QA181 W84 C~4yFk 2018 09 11.32425 01 16 19.320 +04 39 59.71 23.9r 06QA181 W84 C~4yFk
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 -0.05 0.00 0.11
2 0.0002 0.00 -0.10 0.00 0.12
3 0.0027 0.00 -0.26 0.00 0.11
4 0.1616 0.00 0.25 0.00 0.44
5 0.1619 0.00 -0.43 0.00 0.36
6 0.1645 0.00 0.38 0.00 -0.44
7 6.9576 0.00 -0.02 0.00 -0.07
8 6.9577 0.00 0.23 0.00 -0.09
9 6.9658 0.00 0.20 0.00 -0.08
10 6.9659 0.00 -0.11 0.00 0.02
11 7.0290 0.00 -0.05 0.00 -0.05
12 7.0291 0.00 -0.06 0.00 -0.33
13 7.0291 0.00 0.10 0.00 -0.10
14 7.0291 0.00 0.01 0.00 -0.21
15 7.0291 0.00 0.09 0.00 -0.15
16 7.0291 0.00 0.02 0.00 -0.16
17 7.0314 0.00 0.10 0.00 -0.13
18 7.0315 0.00 -0.03 0.00 -0.08
19 7.0423 0.00 0.07 0.00 -0.14
20 7.0424 0.00 0.22 0.00 0.02
21 7.1078 0.00 -0.02 0.00 -0.07
22 7.1079 0.00 0.09 0.00 0.03
23 7.1080 0.00 -0.19 0.00 -0.06
24 7.1162 0.00 -0.10 0.00 0.01
25 7.1220 0.00 0.00 0.00 -0.01
26 7.1355 0.00 -0.04 0.00 -0.15
27 7.1456 0.00 -0.04 0.00 -0.02
28 7.1456 0.00 0.02 0.00 -0.08
29 7.2169 0.00 -0.02 0.00 -0.10
30 7.2169 0.00 -0.01 0.00 0.12
31 7.2550 0.00 -0.09 0.00 -0.04
32 7.2691 0.00 0.08 0.00 -0.02
33 7.2693 0.00 0.07 0.00 -0.03
34 7.2909 0.00 0.23 0.00 0.39
35 7.8449 0.00 0.00 0.00 0.07
36 7.8477 0.00 0.07 0.00 0.05
37 7.9215 0.00 0.06 0.00 -0.01
38 7.9324 0.00 0.01 0.00 0.17
39 7.9921 0.00 -0.17 0.00 0.08
40 8.0090 0.00 0.09 0.00 -0.03
41 8.0198 0.00 -0.08 0.00 0.07
42 8.1671 0.00 0.02 0.00 0.08
43 8.1727 0.00 0.10 0.00 -0.02
44 8.1728 0.00 -0.03 0.00 -0.09
45 8.1834 0.00 -0.05 0.00 -0.06
46 8.1836 0.00 0.02 0.00 -0.11
47 8.1836 0.00 0.00 0.00 -0.08
48 8.2323 0.00 0.03 0.00 0.02
49 8.2603 0.00 0.02 0.00 -0.04
50 8.2603 0.00 -0.00 0.00 -0.05
51 8.2630 0.00 -0.16 0.00 -0.10
52 8.2631 0.00 0.04 0.00 -0.14
53 8.3234 0.00 -0.11 0.00 -0.01
54 8.4107 0.00 -0.01 0.00 -0.07
55 8.4108 0.00 0.02 0.00 -0.06
56 10.0319 0.00 0.06 0.00 0.02
57 10.0319 0.00 0.15 0.00 0.17
58 10.2093 0.00 0.07 0.00 0.11
59 10.2093 0.00 0.07 0.00 0.03
60 10.2120 0.00 -0.05 0.00 0.10
61 10.2121 0.00 0.03 0.00 0.05
62 11.0200 0.00 -0.08 0.00 0.17
63 11.0200 0.00 0.00 0.00 0.07
64 11.0667 0.00 -0.22 0.00 0.13
65 11.0776 0.00 0.00 0.00 0.18
66 11.1020 0.00 -0.07 0.00 -0.02
67 12.0578 0.00 -0.11 0.00 0.23
68 12.0578 0.00 -0.01 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.
06QA181 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.662 42.662 42.662 ecceobj 0.086 0.086 0.086 incobj 4.817 4.817 4.817 qmin 38.224 38.226 38.223 qmax 47.069 47.068 47.067 amean 42.438 42.437 42.437 amin 42.085 42.086 42.085 amax 42.821 42.819 42.819 emean 0.068 0.068 0.068 emin 0.034 0.035 0.034 emax 0.100 0.100 0.100 imean 4.892 4.892 4.893 imin 3.583 3.583 3.582 imax 6.358 6.357 6.360 excite_mean 0.110 0.110 0.110 fracstop 1.000 1.000 1.000 cjmean 3.069 3.069 3.069 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 180.3 180.2 180.4 kozaiamp 180.0 180.0 180.0