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: 12YF12 # Created Fri Apr 26 01:14:12 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 115 observations of 115 # Arc: 9.13y # First observation: 2012/10/13 # Last observation: 2021/12/01 # Chi-squared of fit: 95.92 DOF: 224 RMS: 0.16 # Min/Max residuals: -0.76 0.52 # Exact a, adot, b, bdot, g, gdot: 1.376821E-05 2.280443E-02 4.183823E-06 3.402391E-03 2.378074E-02 -2.742296E-03 # Covariance matrix: 1.3211E-13 -4.9470E-14 8.0946E-15 -4.4734E-15 5.4357E-15 -1.9297E-13 -4.9470E-14 2.7288E-14 -4.4501E-15 3.1601E-15 1.1445E-14 1.2739E-13 8.0946E-15 -4.4501E-15 6.5293E-14 -1.6044E-14 -3.3198E-16 -2.5150E-14 -4.4734E-15 3.1601E-15 -1.6044E-14 5.0444E-15 1.9515E-15 1.7713E-14 5.4357E-15 1.1445E-14 -3.3198E-16 1.9515E-15 3.6193E-14 6.1662E-14 -1.9297E-13 1.2739E-13 -2.5150E-14 1.7713E-14 6.1662E-14 7.1550E-13 # lat0 lon0 xBary yBary zBary JD0 -27.416705 81.885479 0.874506 -0.218618 -0.421550 2456214.098948 # Heliocentric elements and errors Epoch: 2456214.5000 = 2012/10/14 Mean Anomaly: 290.45981 +/- 0.007 Argument of Peri: 10.45476 +/- 0.010 Long of Asc Node: 153.55615 +/- 0.000 Inclination: 28.16602 +/- 0.000 Eccentricity: 0.14019620 +/- 0.0000 Semi-Major Axis: 43.82663500 +/- 0.0014 Time of Perihelion: 2476685.4959 +/- 4.6 Perihelion: 37.68230752 +/- 0.0020 Aphelion: 49.97096248 +/- 0.0023 Period (y) 290.1452 +/- 0.01 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 6.20287355 +/- 0.0000 Ecliptic Y 37.30315585 +/- 0.0003 Ecliptic Z -19.36252260 +/- 0.0002 Ecliptic XDOT -0.00261922 +/- 0.0000 Ecliptic YDOT 0.00027388 +/- 0.0000 Ecliptic ZDOT 0.00049322 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.48430183 +/- 0.0003 Geocenter to KBO 42.05093569 +/- 0.0003 # Hcoef: 6.03
The following table shows the complete astrometric record for 12YF12. 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 (12YF12) followed by the observatory code and reference code for the source of the astrometry.
2012 10 13.59817 05 31 07.854 -04 10 49.74 23.4G 12YF12 F51 C~3467 2012 12 12.43319 05 27 20.941 -04 31 21.53 21.4G 12YF12 F51 C~3467 2012 12 23.40156 05 26 27.225 -04 31 08.82 22.4G 12YF12 F51 C~3467 2012 12 23.41500 05 26 27.150 -04 31 08.72 21.8G 12YF12 F51 C~3467 2012 12 24.36230 05 26 22.589 -04 31 03.59 22.4G 12YF12 F51 C~3467 2013 01 27.32552 05 24 01.181 -04 21 21.74 22.0G 12YF12 F51 C~3467 2013 10 08.61603 05 36 28.356 -03 51 39.87 22.2G 12YF12 F51 C~3467 2013 11 29.45874 05 33 40.992 -04 13 29.67 21.6G 12YF12 F51 C~3467 2013 12 10.39081 05 32 48.285 -04 15 00.10 22.0G 12YF12 F51 C~3467 2013 12 12.42714 05 32 38.251 -04 15 07.36 22.6G 12YF12 F51 C~3467 2014 09 11.60491 05 41 37.475 -03 19 27.97 22.0G 12YF12 F51 C~3467 2014 10 03.53450 05 41 46.825 -03 32 15.23 22.8G 12YF12 F51 C~3467 2014 10 03.54584 05 41 46.830 -03 32 15.57 22.0G 12YF12 F51 C~3467 2014 10 03.55716 05 41 46.799 -03 32 15.92 22.5G 12YF12 F51 C~3467 2014 10 03.56848 05 41 46.809 -03 32 16.44 22.3G 12YF12 F51 C~3467 2014 10 27.55270 05 41 05.794 -03 45 17.54 22.0G 12YF12 F51 C~3467 2014 10 27.59442 05 41 05.664 -03 45 18.51 22.3G 12YF12 F51 C~3467 2014 10 27.60581 05 41 05.628 -03 45 19.08 22.2G 12YF12 F51 C~3467 2014 11 22.53485 05 39 31.142 -03 55 23.24 22.0G 12YF12 F51 C~3467 2014 11 22.54710 05 39 31.099 -03 55 23.55 22.1G 12YF12 F51 C~3467 2014 11 22.55930 05 39 31.045 -03 55 23.69 21.8G 12YF12 F51 C~3467 2014 11 22.57156 05 39 31.003 -03 55 23.62 21.9G 12YF12 F51 C~3467 2014 12 10.51918 05 38 06.592 -03 58 35.30 22.2G 12YF12 F51 C~3467 2015 01 08.37551 05 35 47.200 -03 56 00.34 22.2G 12YF12 F51 C~3467 2015 01 08.38796 05 35 47.128 -03 55 59.78 22.6G 12YF12 F51 C~3467 2015 01 08.40044 05 35 47.093 -03 55 59.68 21.6G 12YF12 F51 C~3467 2015 01 08.41299 05 35 47.033 -03 55 59.36 22.5G 12YF12 F51 C~3467 2015 01 14.27146 05 35 21.522 -03 54 18.27 21.8G 12YF12 F51 C~3467 2015 01 14.28382 05 35 21.461 -03 54 18.15 21.7G 12YF12 F51 C~3467 2015 01 14.29615 05 35 21.407 -03 54 17.94 22.0G 12YF12 F51 C~3467 2015 01 14.30846 05 35 21.337 -03 54 17.55 21.8G 12YF12 F51 C~3467 2015 01 16.27503 05 35 13.172 -03 53 38.95 22.1G 12YF12 F51 C~3467 2015 01 16.28953 05 35 13.112 -03 53 38.34 22.2G 12YF12 F51 C~3467 2015 01 16.30405 05 35 13.044 -03 53 38.17 21.7G 12YF12 F51 C~3467 2015 01 16.31856 05 35 12.993 -03 53 37.87 22.2G 12YF12 F51 C~3467 2015 09 22.57473 05 47 01.047 -03 09 15.17 21.7G 12YF12 F51 C~3467 2015 09 22.58446 05 47 01.092 -03 09 15.48 21.7G 12YF12 F51 C~3467 2015 09 22.59420 05 47 01.086 -03 09 15.84 22.1G 12YF12 F51 C~3467 2015 09 22.60393 05 47 01.097 -03 09 16.11 21.8G 12YF12 F51 C~3467 2015 09 23.58114 05 47 01.596 -03 09 50.29 21.9G 12YF12 F51 C~3467 2015 09 23.59280 05 47 01.604 -03 09 50.73 22.0G 12YF12 F51 C~3467 2015 09 23.60445 05 47 01.608 -03 09 51.17 22.0G 12YF12 F51 C~3467 2015 09 23.61614 05 47 01.614 -03 09 51.50 21.9G 12YF12 F51 C~3467 2015 09 24.59092 05 47 02.012 -03 10 25.57 22.0G 12YF12 F51 C~3467 2015 09 24.60258 05 47 02.037 -03 10 26.06 21.9G 12YF12 F51 C~3467 2015 09 24.61421 05 47 02.022 -03 10 26.38 21.7G 12YF12 F51 C~3467 2015 10 25.51342 05 46 28.766 -03 27 35.70 22.9G 12YF12 F51 C~3467 2015 10 25.52727 05 46 28.743 -03 27 36.45 22.3G 12YF12 F51 C~3467 2015 10 25.54117 05 46 28.713 -03 27 36.91 22.9G 12YF12 F51 C~3468 2015 10 26.50175 05 46 26.283 -03 28 05.53 22.3G 12YF12 F51 C~3468 2015 11 16.52370 05 45 16.263 -03 36 53.72 21.9G 12YF12 F51 C~3468 2015 11 16.53547 05 45 16.218 -03 36 53.73 22.7G 12YF12 F51 C~3468 2015 11 16.54719 05 45 16.151 -03 36 54.35 22.2G 12YF12 F51 C~3468 2015 11 16.55892 05 45 16.122 -03 36 54.35 22.5G 12YF12 F51 C~3468 2015 11 23.51016 05 44 46.826 -03 38 59.25 22.7G 12YF12 F51 C~3468 2015 11 30.46269 05 44 15.348 -03 40 35.48 22.4G 12YF12 F51 C~3468 2015 12 06.41382 05 43 47.062 -03 41 33.03 21.7G 12YF12 F51 C~3468 2015 12 13.47964 05 43 12.448 -03 42 10.97 21.9G 12YF12 F51 C~3468 2015 12 13.49271 05 43 12.385 -03 42 11.04 22.1G 12YF12 F51 C~3468 2015 12 13.50580 05 43 12.320 -03 42 11.05 22.3G 12YF12 F51 C~3468 2015 12 13.51887 05 43 12.257 -03 42 11.15 22.2G 12YF12 F51 C~3468 2016 01 09.37900 05 41 02.079 -03 39 17.96 22.2G 12YF12 F51 C~3468 2016 01 09.39080 05 41 02.018 -03 39 17.77 22.0G 12YF12 F51 C~3468 2016 01 09.40265 05 41 01.983 -03 39 17.65 22.1G 12YF12 F51 C~3468 2016 01 09.41449 05 41 01.919 -03 39 17.45 22.3G 12YF12 F51 C~3468 2016 01 11.36698 05 40 53.180 -03 38 45.77 21.8G 12YF12 F51 C~3468 2016 01 11.37956 05 40 53.121 -03 38 45.46 21.8G 12YF12 F51 C~3468 2016 01 11.39217 05 40 53.060 -03 38 45.22 21.5G 12YF12 F51 C~3468 2016 01 30.32749 05 39 38.847 -03 31 35.92 22.4G 12YF12 F51 C~3468 2016 01 30.34083 05 39 38.792 -03 31 35.44 22.1G 12YF12 F51 C~3468 2016 01 30.35414 05 39 38.758 -03 31 35.12 22.1G 12YF12 F51 C~3468 2016 01 30.36745 05 39 38.703 -03 31 34.61 22.3G 12YF12 F51 C~3468 2016 02 12.23476 05 39 02.462 -03 24 55.40 21.9G 12YF12 F51 C~3468 2016 02 12.24662 05 39 02.455 -03 24 54.72 22.0G 12YF12 F51 C~3468 2016 02 12.25858 05 39 02.430 -03 24 54.32 22.3G 12YF12 F51 C~3468 2016 02 12.27049 05 39 02.400 -03 24 53.98 21.9G 12YF12 F51 C~3468 2016 03 02.25581 05 38 35.462 -03 13 15.13 21.9G 12YF12 F51 C~3468 2016 03 02.26970 05 38 35.451 -03 13 14.74 22.0G 12YF12 F51 C~3468 2016 03 02.28359 05 38 35.449 -03 13 14.04 21.9G 12YF12 F51 C~3468 2016 10 09.60067 05 52 12.832 -03 02 49.57 21.7G 12YF12 F51 C~3468 2016 10 09.61059 05 52 12.832 -03 02 50.02 21.9G 12YF12 F51 C~3468 2016 10 09.62051 05 52 12.825 -03 02 50.18 21.9G 12YF12 F51 C~3468 2016 10 09.63047 05 52 12.803 -03 02 50.50 21.8G 12YF12 F51 C~3468 2016 10 14.55584 05 52 06.724 -03 05 33.32 22.3G 12YF12 F51 C~3468 2016 10 14.58377 05 52 06.653 -03 05 33.61 22.9G 12YF12 F51 C~3468 2016 10 14.59779 05 52 06.638 -03 05 34.24 22.4G 12YF12 F51 C~3468 2017 01 27.33173 05 45 04.858 -03 15 58.83 21.8G 12YF12 F51 C~3468 2017 01 27.34356 05 45 04.817 -03 15 58.53 22.0G 12YF12 F51 C~3468 2017 01 27.35541 05 45 04.764 -03 15 57.95 22.6G 12YF12 F51 C~3468 2017 01 27.36726 05 45 04.731 -03 15 58.00 22.0G 12YF12 F51 C~3468 2017 11 09.57163 05 56 21.583 -03 00 48.92 23.1G 12YF12 F51 C~3468 2017 11 09.58344 05 56 21.539 -03 00 49.36 22.5G 12YF12 F51 C~3468 2017 11 09.59525 05 56 21.494 -03 00 49.77 22.2G 12YF12 F51 C~3468 2017 11 18.44701 05 55 48.029 -03 03 54.60 21.8G 12YF12 F51 C~3468 2017 11 18.45988 05 55 47.988 -03 03 54.83 22.5G 12YF12 F51 C~3468 2017 11 18.47277 05 55 47.935 -03 03 54.97 22.2G 12YF12 F51 C~3468 2017 11 18.48571 05 55 47.878 -03 03 55.19 21.5G 12YF12 F51 C~3468 2017 12 07.45712 05 54 22.557 -03 07 58.55 21.6G 12YF12 F51 C~3468 2017 12 07.46972 05 54 22.477 -03 07 58.22 21.9G 12YF12 F51 C~3468 2017 12 07.48231 05 54 22.370 -03 07 58.43 22.0G 12YF12 F51 C~3468 2017 12 07.49490 05 54 22.332 -03 07 58.51 23.2G 12YF12 F51 C~3468 2017 12 14.41208 05 53 48.404 -03 08 29.32 22.3G 12YF12 F51 C~3468 2017 12 14.42538 05 53 48.326 -03 08 29.11 21.9G 12YF12 F51 C~3468 2017 12 14.43867 05 53 48.243 -03 08 29.41 21.7G 12YF12 F51 C~3468 2017 12 14.45200 05 53 48.179 -03 08 29.41 21.8G 12YF12 F51 C~3468 2018 01 05.38935 05 51 59.834 -03 06 28.54 22.3G 12YF12 F51 C~3468 2018 01 12.38024 05 51 27.419 -03 04 42.21 21.8G 12YF12 F51 C~3468 2018 01 12.39287 05 51 27.360 -03 04 41.92 22.1G 12YF12 F51 C~3468 2018 01 12.40557 05 51 27.319 -03 04 41.74 21.8G 12YF12 F51 C~3468 2018 01 12.41827 05 51 27.245 -03 04 41.62 22.0G 12YF12 F51 C~3468 2018 01 22.34515 05 50 44.955 -03 01 17.54 22.1G 12YF12 F51 C~3468 2018 01 22.35724 05 50 44.902 -03 01 16.65 21.7G 12YF12 F51 C~3468 2021 12 01.419020 06 16 37.381 -01 56 53.37 21.9G 12YF12 G37 C~5J55 2021 12 01.458520 06 16 37.224 -01 56 53.18 12YF12 G37 C~5J55 2021 12 01.498030 06 16 37.018 -01 56 54.03 12YF12 G37 C~5J55
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 0.31 0.00 -0.38
2 0.1638 0.00 -0.76 0.00 -0.10
3 0.1938 0.00 0.07 0.00 0.02
4 0.1939 0.00 -0.06 0.00 0.05
5 0.1965 0.00 0.15 0.00 0.07
6 0.2895 0.00 -0.01 0.00 0.03
7 0.9857 0.00 0.09 0.00 -0.10
8 1.1276 0.00 -0.07 0.00 0.25
9 1.1575 0.00 0.12 0.00 -0.35
10 1.1631 0.00 -0.02 0.00 0.06
11 1.9110 0.00 0.17 0.00 -0.07
12 1.9711 0.00 -0.04 0.00 -0.04
13 1.9711 0.00 0.15 0.00 0.01
14 1.9711 0.00 -0.20 0.00 0.06
15 1.9712 0.00 0.07 0.00 -0.07
16 2.0368 0.00 0.05 0.00 -0.15
17 2.0370 0.00 -0.13 0.00 0.10
18 2.0370 0.00 -0.19 0.00 -0.14
19 2.1080 0.00 -0.02 0.00 0.08
20 2.1080 0.00 0.16 0.00 -0.03
21 2.1080 0.00 0.17 0.00 0.03
22 2.1081 0.00 0.36 0.00 0.30
23 2.1572 0.00 0.05 0.00 -0.01
24 2.2362 0.00 0.10 0.00 -0.34
25 2.2362 0.00 -0.13 0.00 0.03
26 2.2363 0.00 0.20 0.00 -0.06
27 2.2363 0.00 0.16 0.00 0.06
28 2.2524 0.00 0.09 0.00 0.14
29 2.2524 0.00 -0.02 0.00 0.03
30 2.2524 0.00 -0.04 0.00 0.00
31 2.2525 0.00 -0.30 0.00 0.16
32 2.2578 0.00 0.01 0.00 -0.12
33 2.2579 0.00 0.02 0.00 0.20
34 2.2579 0.00 -0.09 0.00 0.07
35 2.2580 0.00 0.06 0.00 0.08
36 2.9404 0.00 -0.45 0.00 0.01
37 2.9404 0.00 0.15 0.00 0.04
38 2.9404 0.00 -0.01 0.00 0.02
39 2.9405 0.00 0.08 0.00 0.09
40 2.9431 0.00 -0.08 0.00 0.05
41 2.9432 0.00 -0.03 0.00 0.02
42 2.9432 0.00 -0.04 0.00 -0.02
43 2.9432 0.00 -0.02 0.00 0.06
44 2.9459 0.00 -0.27 0.00 0.06
45 2.9459 0.00 0.06 0.00 -0.02
46 2.9460 0.00 -0.22 0.00 0.07
47 3.0306 0.00 -0.10 0.00 0.34
48 3.0306 0.00 0.08 0.00 -0.00
49 3.0306 0.00 0.16 0.00 -0.04
50 3.0333 0.00 -0.23 0.00 -0.15
51 3.0908 0.00 0.04 0.00 -0.20
52 3.0909 0.00 0.09 0.00 0.02
53 3.0909 0.00 -0.19 0.00 -0.36
54 3.0909 0.00 0.10 0.00 -0.13
55 3.1100 0.00 0.05 0.00 0.05
56 3.1290 0.00 0.10 0.00 -0.03
57 3.1453 0.00 -0.11 0.00 0.22
58 3.1646 0.00 -0.04 0.00 0.02
59 3.1647 0.00 0.00 0.00 -0.01
60 3.1647 0.00 0.02 0.00 0.02
61 3.1647 0.00 0.06 0.00 -0.05
62 3.2383 0.00 -0.01 0.00 0.07
63 3.2383 0.00 -0.11 0.00 0.08
64 3.2383 0.00 0.19 0.00 0.01
65 3.2384 0.00 0.05 0.00 0.03
66 3.2437 0.00 0.11 0.00 -0.08
67 3.2438 0.00 0.08 0.00 0.02
68 3.2438 0.00 0.02 0.00 0.04
69 3.2956 0.00 0.02 0.00 -0.04
70 3.2957 0.00 -0.13 0.00 0.07
71 3.2957 0.00 0.04 0.00 0.01
72 3.2957 0.00 -0.11 0.00 0.15
73 3.3310 0.00 -0.43 0.00 -0.16
74 3.3310 0.00 -0.11 0.00 0.12
75 3.3310 0.00 -0.06 0.00 0.12
76 3.3311 0.00 -0.09 0.00 0.05
77 3.3830 0.00 0.15 0.00 -0.03
78 3.3831 0.00 0.11 0.00 -0.18
79 3.3831 0.00 0.21 0.00 -0.03
80 3.9891 0.00 -0.09 0.00 0.01
81 3.9891 0.00 0.08 0.00 -0.11
82 3.9891 0.00 0.13 0.00 0.06
83 3.9891 0.00 -0.03 0.00 0.07
84 4.0026 0.00 0.36 0.00 -0.10
85 4.0027 0.00 -0.06 0.00 0.52
86 4.0027 0.00 0.05 0.00 0.34
87 4.2895 0.00 -0.00 0.00 -0.03
88 4.2895 0.00 0.03 0.00 -0.04
89 4.2895 0.00 -0.12 0.00 0.22
90 4.2896 0.00 0.04 0.00 -0.14
91 5.0732 0.00 0.08 0.00 0.01
92 5.0732 0.00 0.06 0.00 -0.16
93 5.0732 0.00 0.01 0.00 -0.29
94 5.0975 0.00 -0.17 0.00 -0.11
95 5.0975 0.00 0.01 0.00 -0.11
96 5.0975 0.00 0.02 0.00 -0.01
97 5.0976 0.00 -0.04 0.00 0.01
98 5.1495 0.00 0.25 0.00 -0.32
99 5.1495 0.00 -0.02 0.00 0.10
100 5.1496 0.00 -0.69 0.00 -0.03
101 5.1496 0.00 -0.33 0.00 -0.02
102 5.1686 0.00 0.23 0.00 -0.10
103 5.1686 0.00 0.07 0.00 0.14
104 5.1686 0.00 -0.17 0.00 -0.13
105 5.1687 0.00 -0.12 0.00 -0.10
106 5.2287 0.00 0.01 0.00 0.24
107 5.2479 0.00 0.08 0.00 0.03
108 5.2479 0.00 0.06 0.00 0.10
109 5.2479 0.00 0.32 0.00 0.06
110 5.2480 0.00 0.09 0.00 -0.04
111 5.2751 0.00 0.05 0.00 -0.24
112 5.2752 0.00 -0.01 0.00 0.36
113 9.1330 0.00 -0.07 0.00 -0.28
114 9.1331 0.00 0.29 0.00 0.32
115 9.1332 0.00 -0.10 0.00 -0.12
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.
12YF12 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 43.870 43.870 43.870 ecceobj 0.137 0.137 0.137 incobj 28.165 28.165 28.165 qmin 35.756 35.760 35.741 qmax 51.693 51.760 51.845 amean 43.610 43.609 43.611 amin 43.250 43.253 43.259 amax 44.017 44.024 44.014 emean 0.154 0.154 0.154 emin 0.132 0.132 0.131 emax 0.177 0.177 0.178 imean 26.971 26.972 26.969 imin 26.457 26.472 26.454 imax 27.465 27.467 27.469 excite_mean 0.479 0.479 0.479 fracstop 1.000 1.000 1.000 cjmean 2.811 2.811 2.811 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 169.7 170.0 169.6 kozaiamp 179.9 180.0 180.0