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: 12GU11
# Created Fri Nov 22 02:09:17 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 101 observations of 101
# Arc: 7.71y
# First observation: 2010/06/30
# Last observation: 2018/03/17
# Chi-squared of fit: 70.43 DOF: 196 RMS: 0.15
# Min/Max residuals: -0.39 0.54
# Exact a, adot, b, bdot, g, gdot:
2.983433E-05 1.018580E-01 4.245004E-06 1.746471E-02 5.227911E-02 1.323129E-02
# Covariance matrix:
1.5180E-13 -6.4592E-14 1.3621E-14 -8.6250E-15 -3.2277E-14 -6.9556E-14
-6.4592E-14 4.2359E-14 -8.6306E-15 6.6598E-15 5.2145E-15 5.0159E-14
1.3621E-14 -8.6306E-15 7.3827E-14 -1.6034E-14 -5.1973E-15 -1.1927E-14
-8.6250E-15 6.6598E-15 -1.6034E-14 4.7796E-15 9.2650E-16 8.6318E-15
-3.2277E-14 5.2145E-15 -5.1973E-15 9.2650E-16 4.2477E-14 1.4497E-14
-6.9556E-14 5.0159E-14 -1.1927E-14 8.6318E-15 1.4497E-14 6.6404E-14
# lat0 lon0 xBary yBary zBary JD0
4.914524 169.257407 -0.960285 -0.028007 0.325032 2455377.772296
# Heliocentric elements and errors
Epoch: 2455378.5000 = 2010/07/01
Mean Anomaly: 0.56188 +/- 0.000
Argument of Peri: 6.13520 +/- 0.000
Long of Asc Node: 144.83582 +/- 0.000
Inclination: 10.76629 +/- 0.000
Eccentricity: 0.89321164 +/- 0.0000
Semi-Major Axis: 170.40363352 +/- 0.0359
Time of Perihelion: 2454110.3884 +/- 0.6
Perihelion: 18.19712456 +/- 0.0054
Aphelion: 322.61014248 +/- 0.0681
Period (y) 2224.4696 +/- 0.70
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -18.57822577 +/- 0.0001
Ecliptic Y 2.54561610 +/- 0.0000
Ecliptic Z 1.63882076 +/- 0.0000
Ecliptic XDOT -0.00159431 +/- 0.0000
Ecliptic YDOT -0.00512061 +/- 0.0000
Ecliptic ZDOT 0.00097059 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 18.82318729 +/- 0.0001
Geocenter to KBO 19.12806549 +/- 0.0001
# Hcoef: 8.87
The following table shows the complete astrometric record for 12GU11. 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 (12GU11) followed by the observatory code and reference code for the source of the astrometry.
2010 06 30.27153 11 28 17.365 +08 46 12.78 22.2G 12GU11 F51 C~2r7M 2010 06 30.27767 11 28 17.416 +08 46 12.50 22.0G 12GU11 F51 C~2r7M 2010 07 01.27224 11 28 24.529 +08 45 21.33 22.7G 12GU11 F51 C~2r7M 2010 07 01.27992 11 28 24.566 +08 45 21.04 22.1G 12GU11 F51 C~2r7M 2011 03 11.53872 11 56 57.590 +06 50 14.81 21.8G 12GU11 F51 C~2r7M 2011 03 13.42141 11 56 42.349 +06 52 17.87 21.8G 12GU11 F51 C~2r7M 2011 03 13.43391 11 56 42.252 +06 52 18.67 22.0G 12GU11 F51 C~2r7M 2011 04 02.30687 11 54 00.987 +07 12 32.84 21.5w 12GU11 F51 C~1vWd 2011 04 02.32200 11 54 00.869 +07 12 33.79 21.7w 12GU11 F51 C~1vWd 2011 04 02.33816 11 54 00.745 +07 12 34.75 21.8w 12GU11 F51 C~1vWd 2011 04 02.35325 11 54 00.623 +07 12 35.51 21.9w 12GU11 F51 C~1vWd 2011 06 19.27888 11 50 13.578 +07 29 36.23 22.3w 12GU11 F51 C~1vWd 2011 06 19.28415 11 50 13.613 +07 29 35.98 22.3w 12GU11 F51 C~1vWd 2011 06 19.28941 11 50 13.613 +07 29 35.52 22.2w 12GU11 F51 C~1vWd 2011 06 19.29467 11 50 13.615 +07 29 35.75 22.0w 12GU11 F51 C~1vWd 2012 02 28.50996 12 21 29.365 +05 06 49.24 21.7G 12GU11 F51 C~2r7M 2012 04 12.33792 12 15 50.689 +05 50 51.54 21.8w 12GU11 F51 C@0613 2012 04 12.35186 12 15 50.578 +05 50 52.23 21.6w 12GU11 F51 C@0613 2012 04 12.37982 12 15 50.369 +05 50 53.67 21.8w 12GU11 F51 C@0613 2012 04 16.29855 12 15 21.81 +05 53 57.8 21.4R 12GU11 291 C~0frf 2012 04 16.30993 12 15 21.71 +05 53 58.8 21.0R 12GU11 291 C~0frf 2012 04 16.32130 12 15 21.63 +05 53 59.6 21.2R 12GU11 291 C~0frf 2013 03 19.48691 12 40 53.611 +03 58 19.55 22.0w 12GU11 F51 C~1vWd 2013 03 19.50225 12 40 53.492 +03 58 20.45 21.9w 12GU11 F51 C~1vWd 2013 03 19.51769 12 40 53.366 +03 58 21.37 21.9w 12GU11 F51 C~1vWd 2013 03 19.53311 12 40 53.241 +03 58 22.56 22.0w 12GU11 F51 C~1vWd 2013 04 17.32135 12 37 09.295 +04 25 09.94 22.2G 12GU11 F51 C~2r7M 2013 12 05.62534 13 01 20.263 +01 43 57.53 21.6G 12GU11 F51 C~2r7M 2013 12 05.62929 13 01 20.287 +01 43 57.53 21.4G 12GU11 F51 C~2r7M 2013 12 05.63322 13 01 20.310 +01 43 57.35 21.6G 12GU11 F51 C~2r7M 2013 12 05.63718 13 01 20.347 +01 43 57.19 21.7G 12GU11 F51 C~2r7M 2014 02 10.49820 13 04 45.674 +01 57 13.91 21.5i 12GU11 F51 C~1w3q 2014 03 09.48783 13 02 35.360 +02 21 47.64 21.4i 12GU11 F51 C~1w3q 2014 03 09.56102 13 02 34.849 +02 21 52.16 21.8i 12GU11 F51 C~1w3q 2014 03 09.57498 13 02 34.781 +02 21 52.98 21.8i 12GU11 F51 C~1w3q 2014 03 24.44622 13 00 49.861 +02 36 44.28 21.9w 12GU11 F51 C~1vWd 2014 03 24.45973 13 00 49.764 +02 36 44.87 22.0w 12GU11 F51 C~1vWd 2014 03 24.47324 13 00 49.650 +02 36 45.77 22.3w 12GU11 F51 C~1vWd 2014 03 24.48684 13 00 49.563 +02 36 46.38 22.1w 12GU11 F51 C~1vWd 2014 04 04.35227 12 59 26.022 +02 47 13.35 21.8w 12GU11 F51 C~1vWd 2014 04 04.36614 12 59 25.916 +02 47 14.32 22.0w 12GU11 F51 C~1vWd 2014 04 04.38009 12 59 25.788 +02 47 15.08 21.9w 12GU11 F51 C~1vWd 2014 04 04.39402 12 59 25.677 +02 47 15.69 22.1w 12GU11 F51 C~1vWd 2014 04 23.30324 12 57 01.769 +03 02 58.74 22.1w 12GU11 F51 C~1vWd 2014 04 23.31534 12 57 01.673 +03 02 59.41 21.9w 12GU11 F51 C~1vWd 2014 04 23.33967 12 57 01.475 +03 03 00.40 22.3w 12GU11 F51 C~1vWd 2014 04 29.26022 12 56 19.840 +03 06 59.56 22.1w 12GU11 F51 C~1vWd 2014 04 29.27212 12 56 19.755 +03 07 00.12 22.2w 12GU11 F51 C~1vWd 2014 04 29.28400 12 56 19.682 +03 07 00.48 22.2w 12GU11 F51 C~1vWd 2014 04 29.29589 12 56 19.594 +03 07 00.74 21.9w 12GU11 F51 C~1vWd 2014 05 27.29190 12 53 50.198 +03 17 46.62 22.0w 12GU11 F51 C~1vWd 2014 05 27.30439 12 53 50.145 +03 17 46.74 22.2w 12GU11 F51 C~1vWd 2014 05 27.31688 12 53 50.109 +03 17 46.89 22.1w 12GU11 F51 C~1vWd 2014 05 27.32937 12 53 50.057 +03 17 46.90 22.0w 12GU11 F51 C~1vWd 2015 03 25.45024 13 19 56.626 +01 15 26.65 22.2w 12GU11 F51 C~1vWd 2015 03 25.46513 13 19 56.514 +01 15 27.29 22.2w 12GU11 F51 C~1vWd 2015 03 25.48013 13 19 56.398 +01 15 28.27 22.3w 12GU11 F51 C~1vWd 2015 04 15.47921 13 17 18.393 +01 34 19.38 22.0G 12GU11 F51 C~2r7M 2015 04 15.49435 13 17 18.274 +01 34 20.45 22.0G 12GU11 F51 C~2r7M 2015 04 16.34609 13 17 11.825 +01 35 02.18 22.0w 12GU11 F51 C~1vWd 2015 04 16.37508 13 17 11.609 +01 35 03.32 21.8w 12GU11 F51 C~1vWd 2015 04 16.38958 13 17 11.486 +01 35 04.08 22.0w 12GU11 F51 C~1vWd 2015 05 20.38956 13 13 25.063 +01 54 51.87 22.4w 12GU11 F51 C~1vWd 2015 05 20.40114 13 13 25.003 +01 54 51.75 22.4w 12GU11 F51 C~1vWd 2015 05 20.42431 13 13 24.871 +01 54 52.61 22.3w 12GU11 F51 C~1vWd 2015 06 07.26789 13 12 13.735 +01 57 29.07 22.3G 12GU11 F51 C~2r7M 2015 06 08.26609 13 12 11.079 +01 57 27.45 22.3w 12GU11 F51 C~1vWd 2015 06 08.27784 13 12 11.037 +01 57 27.60 22.5w 12GU11 F51 C~1vWd 2015 06 08.28955 13 12 11.001 +01 57 27.27 22.4w 12GU11 F51 C~1vWd 2015 06 08.30129 13 12 10.980 +01 57 27.34 22.5w 12GU11 F51 C~1vWd 2016 01 15.60771 13 40 36.769 -00 48 13.65 22.5G 12GU11 F51 C~2r7M 2016 01 15.62066 13 40 36.800 -00 48 13.74 22.6G 12GU11 F51 C~2r7M 2016 01 15.63362 13 40 36.861 -00 48 13.43 21.9G 12GU11 F51 C~2r7M 2016 01 15.64661 13 40 36.911 -00 48 13.03 22.4G 12GU11 F51 C~2r7M 2016 02 15.60000 13 40 51.885 -00 33 35.23 22.3G 12GU11 F51 C~2r7M 2016 03 11.55105 13 39 12.704 -00 13 25.10 22.6G 12GU11 F51 C~2r7M 2016 04 01.41763 13 36 56.923 +00 05 25.05 22.3G 12GU11 F51 C~2r7M 2016 04 01.43103 13 36 56.825 +00 05 25.76 22.6G 12GU11 F51 C~2r7M 2016 04 01.44448 13 36 56.733 +00 05 26.42 22.5G 12GU11 F51 C~2r7M 2016 04 01.45796 13 36 56.631 +00 05 27.04 22.6G 12GU11 F51 C~2r7M 2016 04 09.40236 13 35 58.176 +00 12 21.30 22.4G 12GU11 F51 C~2r7M 2016 04 09.41430 13 35 58.081 +00 12 22.00 22.4G 12GU11 F51 C~2r7M 2016 04 09.42623 13 35 57.983 +00 12 22.45 22.2G 12GU11 F51 C~2r7M 2016 04 09.49512 13 35 57.465 +00 12 26.13 22.4G 12GU11 F51 C~2r7M 2016 04 09.50866 13 35 57.356 +00 12 26.82 22.1G 12GU11 F51 C~2r7M 2016 04 09.52187 13 35 57.239 +00 12 27.45 21.7G 12GU11 F51 C~2r7M 2016 04 28.35777 13 33 37.231 +00 26 49.57 21.9G 12GU11 F51 C~2r7M 2016 04 28.36895 13 33 37.130 +00 26 49.97 22.1G 12GU11 F51 C~2r7M 2016 04 28.39131 13 33 36.976 +00 26 50.83 22.2G 12GU11 F51 C~2r7M 2016 05 05.36136 13 32 47.937 +00 31 08.64 22.8G 12GU11 F51 C~2r7M 2016 05 05.38445 13 32 47.789 +00 31 09.64 21.8G 12GU11 F51 C~2r7M 2016 05 05.39607 13 32 47.695 +00 31 10.02 22.1G 12GU11 F51 C~2r7M 2017 03 07.55946 13 56 06.575 -01 27 45.74 23.6G 12GU11 F51 C~2r7M 2017 03 07.57272 13 56 06.513 -01 27 44.93 22.8G 12GU11 F51 C~2r7M 2017 03 07.58595 13 56 06.444 -01 27 44.45 23.1G 12GU11 F51 C~2r7M 2017 03 07.59917 13 56 06.379 -01 27 43.76 22.8G 12GU11 F51 C~2r7M 2017 04 03.60201 13 53 26.502 -01 04 50.14 20.1G 12GU11 F51 C~2r7M 2017 05 17.27439 13 48 17.712 -00 35 29.52 22.3G 12GU11 F51 C~2r7M 2017 05 22.29170 13 47 47.756 -00 33 35.79 22.5G 12GU11 F51 C~2r7M 2018 03 17.56680 14 10 43.407 -02 25 18.15 22.6G 12GU11 F51 C~2r7M 2018 03 17.57925 14 10 43.337 -02 25 17.01 22.9G 12GU11 F51 C~2r7M
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 0.27 0.00 0.12
2 0.0000 0.00 0.40 0.00 0.15
3 0.0027 0.00 0.10 0.00 -0.22
4 0.0028 0.00 -0.17 0.00 -0.11
5 0.6961 0.00 0.08 0.00 -0.08
6 0.7013 0.00 -0.08 0.00 -0.03
7 0.7013 0.00 0.02 0.00 -0.04
8 0.7557 0.00 -0.19 0.00 -0.04
9 0.7558 0.00 -0.14 0.00 0.06
10 0.7558 0.00 -0.06 0.00 0.13
11 0.7559 0.00 -0.07 0.00 0.05
12 0.9692 0.00 -0.00 0.00 -0.05
13 0.9692 0.00 0.24 0.00 -0.12
14 0.9692 0.00 -0.04 0.00 -0.39
15 0.9693 0.00 -0.29 0.00 0.02
16 1.6653 0.00 0.03 0.00 -0.02
17 1.7853 0.00 0.07 0.00 0.05
18 1.7853 0.00 -0.00 0.00 0.06
19 1.7854 0.00 0.06 0.00 0.14
20 1.7961 0.00 -0.03 0.00 -0.33
21 1.7961 0.00 -0.29 0.00 0.16
22 1.7962 0.00 -0.24 0.00 0.44
23 2.7193 0.00 0.10 0.00 0.10
24 2.7193 0.00 0.13 0.00 0.05
25 2.7194 0.00 0.05 0.00 0.02
26 2.7194 0.00 -0.01 0.00 0.25
27 2.7982 0.00 0.01 0.00 0.38
28 3.4342 0.00 0.19 0.00 -0.03
29 3.4342 0.00 0.04 0.00 0.08
30 3.4343 0.00 -0.13 0.00 0.00
31 3.4343 0.00 -0.09 0.00 -0.05
32 3.6173 0.00 -0.11 0.00 -0.30
33 3.6912 0.00 0.15 0.00 -0.05
34 3.6914 0.00 -0.22 0.00 0.10
35 3.6915 0.00 0.15 0.00 0.09
36 3.7322 0.00 -0.10 0.00 0.10
37 3.7322 0.00 0.00 0.00 -0.11
38 3.7322 0.00 -0.15 0.00 -0.01
39 3.7323 0.00 0.12 0.00 -0.21
40 3.7620 0.00 0.04 0.00 -0.11
41 3.7621 0.00 0.10 0.00 0.08
42 3.7621 0.00 -0.16 0.00 0.07
43 3.7621 0.00 -0.16 0.00 -0.10
44 3.8139 0.00 0.18 0.00 -0.10
45 3.8139 0.00 0.08 0.00 0.05
46 3.8140 0.00 -0.19 0.00 -0.00
47 3.8302 0.00 0.11 0.00 -0.06
48 3.8303 0.00 0.07 0.00 0.05
49 3.8303 0.00 0.22 0.00 -0.04
50 3.8303 0.00 0.14 0.00 -0.23
51 3.9070 0.00 -0.05 0.00 -0.07
52 3.9070 0.00 -0.15 0.00 -0.04
53 3.9070 0.00 0.01 0.00 0.02
54 3.9071 0.00 -0.08 0.00 -0.06
55 4.7342 0.00 0.32 0.00 0.16
56 4.7343 0.00 0.29 0.00 -0.05
57 4.7343 0.00 0.20 0.00 0.07
58 4.7918 0.00 -0.07 0.00 -0.24
59 4.7918 0.00 -0.09 0.00 0.09
60 4.7942 0.00 0.05 0.00 0.18
61 4.7943 0.00 0.19 0.00 -0.09
62 4.7943 0.00 0.03 0.00 -0.04
63 4.8874 0.00 0.02 0.00 0.19
64 4.8874 0.00 0.04 0.00 -0.15
65 4.8875 0.00 -0.10 0.00 0.28
66 4.9363 0.00 -0.03 0.00 0.01
67 4.9391 0.00 0.05 0.00 0.16
68 4.9391 0.00 -0.10 0.00 0.34
69 4.9391 0.00 -0.15 0.00 0.04
70 4.9392 0.00 0.02 0.00 0.14
71 5.5451 0.00 -0.17 0.00 -0.11
72 5.5451 0.00 -0.30 0.00 -0.37
73 5.5451 0.00 0.02 0.00 -0.23
74 5.5452 0.00 0.18 0.00 -0.00
75 5.6299 0.00 0.04 0.00 0.14
76 5.6982 0.00 -0.15 0.00 0.06
77 5.7554 0.00 -0.12 0.00 0.05
78 5.7554 0.00 -0.11 0.00 0.05
79 5.7554 0.00 -0.00 0.00 -0.01
80 5.7555 0.00 -0.04 0.00 -0.11
81 5.7772 0.00 0.06 0.00 -0.20
82 5.7773 0.00 -0.00 0.00 -0.11
83 5.7773 0.00 -0.11 0.00 -0.27
84 5.7775 0.00 0.01 0.00 -0.08
85 5.7775 0.00 -0.08 0.00 -0.08
86 5.7776 0.00 -0.32 0.00 -0.12
87 5.8291 0.00 0.20 0.00 0.13
88 5.8292 0.00 -0.08 0.00 0.08
89 5.8292 0.00 0.08 0.00 0.05
90 5.8483 0.00 0.02 0.00 -0.22
91 5.8484 0.00 0.22 0.00 -0.01
92 5.8484 0.00 0.03 0.00 -0.03
93 6.6866 0.00 0.07 0.00 -0.02
94 6.6867 0.00 0.07 0.00 0.14
95 6.6867 0.00 -0.03 0.00 -0.02
96 6.6867 0.00 -0.08 0.00 0.02
97 6.7607 0.00 0.08 0.00 -0.08
98 6.8802 0.00 -0.14 0.00 0.07
99 6.8940 0.00 -0.15 0.00 -0.06
100 7.7133 0.00 0.01 0.00 -0.01
101 7.7134 0.00 -0.05 0.00 0.54
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.
12GU11 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 177.460 177.450 177.470 ecceobj 0.897 0.897 0.897 incobj 10.761 10.761 10.761 qmin 17.190 17.155 17.413 qmax 381.329 341.168 336.713 amean 176.263 165.026 174.977 amin 164.311 157.055 172.652 amax 199.833 179.658 177.470 emean 0.896 0.890 0.896 emin 0.886 0.882 0.890 emax 0.910 0.900 0.900 imean 9.744 9.478 9.544 imin 9.226 9.064 9.292 imax 10.094 9.895 9.736 excite_mean 0.912 0.905 0.911 fracstop 0.052 0.048 0.002 cjmean 2.288 2.294 2.288 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 11.5 12.5 6.4 kozaiamp 6.1 6.4 0.4