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: 12YG12 # Created Sun Dec 22 02:09:23 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 112 observations of 112 # Arc: 8.27y # First observation: 2012/11/08 # Last observation: 2021/02/15 # Chi-squared of fit: 117.36 DOF: 218 RMS: 0.18 # Min/Max residuals: -0.81 0.79 # Exact a, adot, b, bdot, g, gdot: 1.744212E-05 2.888788E-02 7.106084E-06 1.283511E-02 2.893487E-02 -5.773303E-03 # Covariance matrix: 1.2305E-13 -5.3135E-14 2.6878E-14 -1.8994E-14 5.2897E-15 -1.9936E-13 -5.3135E-14 3.2889E-14 -2.0491E-14 1.4170E-14 9.1571E-15 1.4887E-13 2.6878E-14 -2.0491E-14 8.5101E-14 -2.8950E-14 -6.0860E-15 -1.1308E-13 -1.8994E-14 1.4170E-14 -2.8950E-14 1.3305E-14 3.3737E-15 7.8541E-14 5.2897E-15 9.1571E-15 -6.0860E-15 3.3737E-15 3.8189E-14 3.5841E-14 -1.9936E-13 1.4887E-13 -1.1308E-13 7.8541E-14 3.5841E-14 8.2497E-13 # lat0 lon0 xBary yBary zBary JD0 -20.837693 77.094186 0.504832 -0.301977 -0.793546 2456240.074728 # Heliocentric elements and errors Epoch: 2456240.5000 = 2012/11/09 Mean Anomaly: 310.89937 +/- 0.004 Argument of Peri: 28.67760 +/- 0.007 Long of Asc Node: 114.53216 +/- 0.000 Inclination: 30.88412 +/- 0.000 Eccentricity: 0.21681991 +/- 0.0000 Semi-Major Axis: 39.68372363 +/- 0.0012 Time of Perihelion: 2468694.2910 +/- 3.8 Perihelion: 31.07950222 +/- 0.0015 Aphelion: 48.28794504 +/- 0.0019 Period (y) 249.9924 +/- 0.01 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 7.89690058 +/- 0.0001 Ecliptic Y 32.20135921 +/- 0.0002 Ecliptic Z -12.29367612 +/- 0.0001 Ecliptic XDOT -0.00268795 +/- 0.0000 Ecliptic YDOT 0.00053585 +/- 0.0000 Ecliptic ZDOT 0.00132949 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 35.36143556 +/- 0.0002 Geocenter to KBO 34.56052191 +/- 0.0002 # Hcoef: 6.88
The following table shows the complete astrometric record for 12YG12. 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 (12YG12) followed by the observatory code and reference code for the source of the astrometry.
2012 11 08.57395 05 11 46.448 +02 03 47.07 21.9G 12YG12 F51 C~3468 2012 12 07.45976 05 09 07.435 +01 59 00.32 21.9G 12YG12 F51 C~3468 2012 12 12.49490 05 08 37.680 +01 59 02.03 21.5G 12YG12 F51 C~3468 2012 12 30.42489 05 06 54.920 +02 01 22.58 22.2G 12YG12 F51 C~3468 2012 12 30.43776 05 06 54.828 +02 01 23.30 22.3G 12YG12 F51 C~3468 2013 11 01.59522 05 18 42.558 +02 59 01.30 21.6G 12YG12 F51 C~3468 2013 11 01.60701 05 18 42.542 +02 59 01.22 21.8G 12YG12 F51 C~3468 2013 11 29.53488 05 16 19.664 +02 52 45.98 21.9G 12YG12 F51 C~3468 2013 11 29.54898 05 16 19.561 +02 52 45.97 22.5G 12YG12 F51 C~3468 2013 11 29.56309 05 16 19.470 +02 52 46.00 22.0G 12YG12 F51 C~3468 2013 11 29.57728 05 16 19.407 +02 52 45.73 21.5G 12YG12 F51 C~3468 2013 12 11.38615 05 15 09.819 +02 52 16.15 21.8G 12YG12 F51 C~3468 2013 12 11.39970 05 15 09.742 +02 52 15.90 22.8G 12YG12 F51 C~3468 2013 12 11.41296 05 15 09.656 +02 52 15.68 21.9G 12YG12 F51 C~3468 2013 12 11.42567 05 15 09.628 +02 52 15.69 22.5G 12YG12 F51 C~3468 2013 12 29.43031 05 13 24.539 +02 54 20.21 12YG12 F51 C~3468 2014 02 25.28608 05 10 06.889 +03 21 52.56 22.1G 12YG12 F51 C~3468 2014 02 28.24966 05 10 05.928 +03 23 53.10 22.6G 12YG12 F51 C~3468 2014 02 28.26183 05 10 05.931 +03 23 53.73 22.3G 12YG12 F51 C~3468 2014 02 28.27396 05 10 05.930 +03 23 54.42 22.3G 12YG12 F51 C~3468 2014 02 28.28608 05 10 05.921 +03 23 54.73 22.1G 12YG12 F51 C~3468 2014 11 20.52028 05 23 41.054 +03 47 41.55 22.9G 12YG12 F51 C~3468 2014 11 20.53359 05 23 40.986 +03 47 41.53 23.1G 12YG12 F51 C~3468 2014 11 20.54685 05 23 40.917 +03 47 41.10 23.3G 12YG12 F51 C~3468 2014 11 20.56021 05 23 40.834 +03 47 40.95 22.8G 12YG12 F51 C~3468 2014 12 02.43997 05 22 33.715 +03 46 12.84 21.5G 12YG12 F51 C~3468 2015 01 15.37180 05 18 24.557 +03 52 55.61 21.5G 12YG12 F51 C~3468 2015 01 15.38419 05 18 24.479 +03 52 55.97 22.2G 12YG12 F51 C~3468 2015 01 15.39655 05 18 24.433 +03 52 56.07 22.0G 12YG12 F51 C~3468 2015 01 15.40893 05 18 24.371 +03 52 56.38 22.4G 12YG12 F51 C~3468 2015 01 17.35253 05 18 15.247 +03 53 40.88 22.2G 12YG12 F51 C~3468 2015 01 17.36649 05 18 15.178 +03 53 41.15 22.2G 12YG12 F51 C~3468 2015 01 17.38030 05 18 15.119 +03 53 41.52 22.2G 12YG12 F51 C~3468 2015 01 17.39411 05 18 15.046 +03 53 41.88 22.0G 12YG12 F51 C~3468 2015 02 13.25695 05 16 43.117 +04 07 09.28 22.3G 12YG12 F51 C~3468 2015 09 19.56590 05 33 00.480 +05 02 01.54 21.9G 12YG12 F51 C~3468 2015 09 19.57884 05 33 00.476 +05 02 00.93 22.1G 12YG12 F51 C~3468 2015 09 19.59176 05 33 00.514 +05 02 00.64 22.0G 12YG12 F51 C~3468 2015 09 19.60473 05 33 00.504 +05 02 00.26 22.4G 12YG12 F51 C~3468 2015 10 08.52917 05 32 52.651 +04 54 34.11 22.3G 12YG12 F51 C~3468 2015 10 08.54213 05 32 52.632 +04 54 33.67 22.2G 12YG12 F51 C~3468 2015 10 08.55507 05 32 52.605 +04 54 33.44 22.1G 12YG12 F51 C~3468 2015 10 08.56803 05 32 52.575 +04 54 33.17 22.0G 12YG12 F51 C~3468 2015 10 09.52408 05 32 51.104 +04 54 11.13 22.1G 12YG12 F51 C~3468 2015 10 09.53702 05 32 51.098 +04 54 10.69 22.2G 12YG12 F51 C~3468 2015 10 09.54995 05 32 51.059 +04 54 10.65 22.4G 12YG12 F51 C~3468 2015 10 09.56290 05 32 51.037 +04 54 10.15 22.5G 12YG12 F51 C~3468 2015 10 14.52807 05 32 41.668 +04 52 17.73 22.1G 12YG12 F51 C~3468 2015 10 14.54102 05 32 41.643 +04 52 17.24 22.1G 12YG12 F51 C~3468 2015 10 14.55408 05 32 41.606 +04 52 16.73 22.5G 12YG12 F51 C~3468 2015 10 14.56714 05 32 41.578 +04 52 16.60 22.2G 12YG12 F51 C~3468 2015 11 17.47525 05 30 32.838 +04 42 14.77 22.6G 12YG12 F51 C~3468 2015 12 03.45932 05 29 03.955 +04 40 15.70 22.2G 12YG12 F51 C~3468 2015 12 03.47201 05 29 03.877 +04 40 15.80 22.1G 12YG12 F51 C~3468 2015 12 03.48479 05 29 03.798 +04 40 15.65 22.3G 12YG12 F51 C~3468 2015 12 03.49746 05 29 03.716 +04 40 15.72 21.9G 12YG12 F51 C~3468 2015 12 05.40771 05 28 52.463 +04 40 10.62 21.8G 12YG12 F51 C~3468 2015 12 05.40835 05 28 52.458 +04 40 10.63 21.9G 12YG12 F51 C~3468 2015 12 05.42012 05 28 52.383 +04 40 10.58 22.0G 12YG12 F51 C~3468 2015 12 05.42076 05 28 52.382 +04 40 10.45 22.0G 12YG12 F51 C~3468 2015 12 05.43254 05 28 52.309 +04 40 10.45 22.3G 12YG12 F51 C~3468 2015 12 05.43320 05 28 52.306 +04 40 10.36 22.0G 12YG12 F51 C~3468 2015 12 05.44506 05 28 52.245 +04 40 10.55 22.0G 12YG12 F51 C~3468 2015 12 05.44571 05 28 52.231 +04 40 10.42 22.0G 12YG12 F51 C~3468 2015 12 31.43695 05 26 17.317 +04 42 32.72 21.7G 12YG12 F51 C~3468 2015 12 31.44739 05 26 17.279 +04 42 32.79 22.1G 12YG12 F51 C~3468 2015 12 31.45777 05 26 17.215 +04 42 32.76 22.0G 12YG12 F51 C~3468 2015 12 31.46842 05 26 17.117 +04 42 33.00 22.0G 12YG12 F51 C~3468 2016 01 01.40674 05 26 11.806 +04 42 45.87 22.2G 12YG12 F51 C~3468 2016 01 01.41738 05 26 11.767 +04 42 45.72 21.1G 12YG12 F51 C~3468 2016 01 11.40360 05 25 17.242 +04 45 32.23 23.1G 12YG12 F51 C~3468 2016 01 11.41545 05 25 17.187 +04 45 32.65 22.5G 12YG12 F51 C~3468 2016 01 11.42731 05 25 17.123 +04 45 32.76 22.6G 12YG12 F51 C~3468 2016 01 11.43912 05 25 17.065 +04 45 32.83 22.9G 12YG12 F51 C~3468 2016 02 26.24602 05 22 50.525 +05 08 35.57 22.4G 12YG12 F51 C~3468 2016 02 26.25879 05 22 50.525 +05 08 35.84 22.8G 12YG12 F51 C~3468 2016 02 26.27147 05 22 50.519 +05 08 36.68 22.4G 12YG12 F51 C~3468 2016 10 13.59143 05 39 17.871 +05 45 57.58 22.4G 12YG12 F51 C~3468 2016 10 13.60359 05 39 17.851 +05 45 57.18 22.6G 12YG12 F51 C~3468 2016 10 13.61573 05 39 17.823 +05 45 57.10 22.3G 12YG12 F51 C~3468 2016 10 13.62788 05 39 17.794 +05 45 56.67 22.1G 12YG12 F51 C~3468 2016 11 01.54811 05 38 21.401 +05 39 57.80 23.1G 12YG12 F51 C~3468 2016 12 22.36619 05 33 45.539 +05 35 38.95 22.3G 12YG12 F51 C~3468 2016 12 22.37908 05 33 45.452 +05 35 38.84 22.0G 12YG12 F51 C~3468 2016 12 22.39195 05 33 45.370 +05 35 38.98 21.7G 12YG12 F51 C~3468 2016 12 22.40490 05 33 45.294 +05 35 39.17 22.0G 12YG12 F51 C~3468 2017 01 20.39755 05 31 06.123 +05 43 35.43 22.1G 12YG12 F51 C~3468 2017 01 20.39819 05 31 06.121 +05 43 35.54 22.3G 12YG12 F51 C~3468 2017 01 20.40935 05 31 06.073 +05 43 35.76 21.3G 12YG12 F51 C~3468 2017 01 20.40999 05 31 06.042 +05 43 35.62 21.2G 12YG12 F51 C~3468 2017 01 20.42114 05 31 06.019 +05 43 36.03 21.7G 12YG12 F51 C~3468 2017 01 20.42178 05 31 06.006 +05 43 36.06 22.1G 12YG12 F51 C~3468 2017 01 20.43292 05 31 05.967 +05 43 36.24 21.8G 12YG12 F51 C~3468 2017 01 20.43356 05 31 05.962 +05 43 36.33 22.2G 12YG12 F51 C~3468 2017 01 28.28421 05 30 32.047 +05 47 00.26 22.3G 12YG12 F51 C~3468 2017 01 28.29695 05 30 31.992 +05 47 00.57 22.1G 12YG12 F51 C~3468 2017 01 28.30966 05 30 31.931 +05 47 01.02 22.4G 12YG12 F51 C~3468 2017 01 28.32237 05 30 31.881 +05 47 01.46 22.3G 12YG12 F51 C~3468 2017 11 24.50690 05 43 17.916 +06 30 07.59 21.9G 12YG12 F51 C~3468 2017 11 24.52000 05 43 17.789 +06 30 07.47 19.6G 12YG12 F51 C~3468 2017 11 24.54622 05 43 17.718 +06 30 06.81 19.4G 12YG12 F51 C~3468 2017 12 25.42432 05 40 13.599 +06 31 02.40 22.4G 12YG12 F51 C~3468 2017 12 25.43642 05 40 13.519 +06 31 02.63 21.8G 12YG12 F51 C~3468 2017 12 25.44857 05 40 13.442 +06 31 02.77 22.7G 12YG12 F51 C~3468 2017 12 25.46079 05 40 13.374 +06 31 02.79 21.8G 12YG12 F51 C~3468 2018 01 03.49088 05 39 19.772 +06 32 56.31 22.3G 12YG12 F51 C~3468 2018 01 10.32633 05 38 41.223 +06 34 50.10 22.0G 12YG12 F51 C~3468 2018 01 10.33898 05 38 41.172 +06 34 50.43 21.8G 12YG12 F51 C~3468 2018 01 10.35166 05 38 41.106 +06 34 50.56 22.2G 12YG12 F51 C~3468 2018 01 10.36439 05 38 41.030 +06 34 50.77 22.0G 12YG12 F51 C~3468 2021 02 15.216070 05 56 46.095 +09 36 34.31 22.1G 12YG12 G37 C~4Z6v 2021 02 15.269370 05 56 45.941 +09 36 35.86 12YG12 G37 C~4Z6v
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 -0.34 0.00 -0.05
2 0.0791 0.00 0.09 0.00 0.14
3 0.0929 0.00 0.16 0.00 0.41
4 0.1420 0.00 -0.03 0.00 -0.81
5 0.1420 0.00 -0.34 0.00 -0.27
6 0.9802 0.00 -0.03 0.00 0.07
7 0.9802 0.00 0.49 0.00 0.22
8 1.0567 0.00 0.21 0.00 0.08
9 1.0567 0.00 -0.09 0.00 0.16
10 1.0568 0.00 -0.22 0.00 0.28
11 1.0568 0.00 0.09 0.00 0.09
12 1.0892 0.00 0.07 0.00 0.23
13 1.0892 0.00 0.14 0.00 -0.04
14 1.0892 0.00 0.05 0.00 -0.27
15 1.0893 0.00 0.79 0.00 -0.28
16 1.1386 0.00 -0.28 0.00 -0.38
17 1.2970 0.00 -0.03 0.00 -0.05
18 1.3051 0.00 -0.14 0.00 -0.06
19 1.3051 0.00 -0.05 0.00 0.08
20 1.3051 0.00 -0.02 0.00 0.27
21 1.3052 0.00 -0.11 0.00 0.08
22 2.0313 0.00 -0.05 0.00 -0.01
23 2.0314 0.00 0.03 0.00 0.12
24 2.0314 0.00 0.09 0.00 -0.17
25 2.0314 0.00 -0.06 0.00 -0.18
26 2.0640 0.00 -0.19 0.00 0.04
27 2.1843 0.00 0.04 0.00 0.12
28 2.1843 0.00 -0.22 0.00 0.21
29 2.1843 0.00 -0.01 0.00 0.03
30 2.1844 0.00 -0.04 0.00 0.06
31 2.1897 0.00 0.02 0.00 0.01
32 2.1897 0.00 -0.02 0.00 -0.04
33 2.1898 0.00 0.07 0.00 0.00
34 2.1898 0.00 -0.04 0.00 0.04
35 2.2633 0.00 -0.13 0.00 0.07
36 2.8610 0.00 0.18 0.00 0.34
37 2.8611 0.00 0.00 0.00 0.03
38 2.8611 0.00 0.46 0.00 0.05
39 2.8611 0.00 0.19 0.00 -0.03
40 2.9130 0.00 -0.09 0.00 -0.03
41 2.9130 0.00 -0.07 0.00 -0.17
42 2.9130 0.00 -0.17 0.00 -0.11
43 2.9131 0.00 -0.31 0.00 -0.08
44 2.9157 0.00 -0.13 0.00 -0.01
45 2.9157 0.00 0.11 0.00 -0.15
46 2.9157 0.00 -0.14 0.00 0.11
47 2.9158 0.00 -0.14 0.00 -0.09
48 2.9294 0.00 0.03 0.00 0.39
49 2.9294 0.00 0.09 0.00 0.19
50 2.9294 0.00 -0.02 0.00 -0.03
51 2.9295 0.00 0.00 0.00 0.13
52 3.0223 0.00 -0.32 0.00 0.01
53 3.0661 0.00 -0.02 0.00 -0.04
54 3.0661 0.00 -0.05 0.00 0.10
55 3.0661 0.00 -0.09 0.00 -0.01
56 3.0662 0.00 -0.18 0.00 0.10
57 3.0714 0.00 0.01 0.00 0.13
58 3.0714 0.00 -0.01 0.00 0.14
59 3.0714 0.00 -0.07 0.00 0.12
60 3.0714 0.00 -0.03 0.00 -0.01
61 3.0715 0.00 -0.06 0.00 0.01
62 3.0715 0.00 -0.04 0.00 -0.08
63 3.0715 0.00 0.11 0.00 0.14
64 3.0715 0.00 -0.04 0.00 0.01
65 3.1427 0.00 -0.23 0.00 -0.04
66 3.1427 0.00 0.11 0.00 -0.10
67 3.1427 0.00 0.06 0.00 -0.27
68 3.1428 0.00 -0.48 0.00 -0.17
69 3.1453 0.00 0.13 0.00 0.06
70 3.1454 0.00 0.47 0.00 -0.24
71 3.1727 0.00 0.06 0.00 -0.07
72 3.1727 0.00 0.17 0.00 0.12
73 3.1728 0.00 0.15 0.00 0.00
74 3.1728 0.00 0.21 0.00 -0.16
75 3.2982 0.00 -0.14 0.00 0.12
76 3.2982 0.00 0.03 0.00 -0.09
77 3.2983 0.00 0.11 0.00 0.26
78 3.9289 0.00 -0.05 0.00 0.09
79 3.9289 0.00 0.03 0.00 -0.05
80 3.9289 0.00 -0.01 0.00 0.12
81 3.9290 0.00 -0.07 0.00 -0.05
82 3.9808 0.00 0.07 0.00 0.12
83 4.1199 0.00 0.07 0.00 0.20
84 4.1199 0.00 -0.05 0.00 -0.02
85 4.1200 0.00 -0.10 0.00 0.01
86 4.1200 0.00 -0.04 0.00 0.09
87 4.1994 0.00 0.02 0.00 -0.10
88 4.1994 0.00 0.04 0.00 -0.01
89 4.1994 0.00 0.11 0.00 -0.06
90 4.1994 0.00 -0.31 0.00 -0.21
91 4.1994 0.00 0.14 0.00 -0.07
92 4.1994 0.00 -0.01 0.00 -0.06
93 4.1995 0.00 0.19 0.00 -0.14
94 4.1995 0.00 0.16 0.00 -0.07
95 4.2210 0.00 0.13 0.00 -0.08
96 4.2210 0.00 0.08 0.00 -0.13
97 4.2210 0.00 -0.05 0.00 -0.03
98 4.2211 0.00 -0.02 0.00 0.06
99 5.0429 0.00 -0.00 0.00 -0.00
100 5.0430 0.00 -0.80 0.00 -0.04
101 5.0430 0.00 0.33 0.00 -0.54
102 5.1276 0.00 0.05 0.00 -0.02
103 5.1276 0.00 -0.03 0.00 0.08
104 5.1277 0.00 -0.07 0.00 0.10
105 5.1277 0.00 0.04 0.00 0.00
106 5.1524 0.00 0.21 0.00 0.47
107 5.1711 0.00 -0.23 0.00 -0.10
108 5.1712 0.00 0.06 0.00 -0.01
109 5.1712 0.00 0.13 0.00 -0.11
110 5.1712 0.00 0.05 0.00 -0.14
111 8.2701 0.00 0.05 0.00 0.11
112 8.2702 0.00 0.11 0.00 0.04
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.
12YG12 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.736 39.736 39.737 ecceobj 0.214 0.214 0.214 incobj 30.905 30.905 30.905 qmin 24.456 24.459 24.453 qmax 55.021 55.022 55.018 amean 39.454 39.453 39.454 amin 39.104 39.103 39.105 amax 39.905 39.912 39.907 emean 0.269 0.269 0.269 emin 0.140 0.140 0.139 emax 0.379 0.379 0.380 imean 27.557 27.556 27.558 imin 23.574 23.578 23.571 imax 30.645 30.645 30.645 excite_mean 0.538 0.539 0.538 fracstop 1.000 1.000 1.000 cjmean 2.714 2.714 2.714 libcent 0 179.8 179.8 179.8 libamp 0 34.5 34.4 34.6 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 244.1 244.0 244.2 kozaiamp 180.0 180.0 180.0