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: 17FO161 # Created Thu Apr 25 01:18:16 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 77 observations of 77 # Arc: 11.98y # First observation: 2012/03/19 # Last observation: 2024/03/13 # Chi-squared of fit: 96.76 DOF: 148 RMS: 0.20 # Min/Max residuals: -0.57 0.73 # Exact a, adot, b, bdot, g, gdot: 2.816552E-06 4.097274E-03 7.112198E-06 5.672940E-03 1.269845E-02 -2.084159E-03 # Covariance matrix: 1.2844E-13 -3.0070E-14 4.0592E-14 -1.9401E-14 -4.3923E-14 -3.1194E-13 -3.0070E-14 9.8838E-15 -1.8255E-14 8.7417E-15 9.6388E-15 1.4054E-13 4.0592E-14 -1.8255E-14 1.3659E-13 -3.8921E-14 -2.1790E-14 -3.8868E-13 -1.9401E-14 8.7417E-15 -3.8921E-14 1.4820E-14 1.0319E-14 1.8619E-13 -4.3923E-14 9.6388E-15 -2.1790E-14 1.0319E-14 8.1495E-14 1.6598E-13 -3.1194E-13 1.4054E-13 -3.8868E-13 1.8619E-13 1.6598E-13 2.9933E-12 # lat0 lon0 xBary yBary zBary JD0 -3.078450 162.581417 -0.283183 -0.051422 -0.956225 2456005.841676 # Heliocentric elements and errors Epoch: 2456006.5000 = 2012/03/20 Mean Anomaly: 233.33322 +/- 0.026 Argument of Peri: 151.45338 +/- 0.018 Long of Asc Node: 164.97406 +/- 0.000 Inclination: 54.26869 +/- 0.000 Eccentricity: 0.42603242 +/- 0.0001 Semi-Major Axis: 59.71812982 +/- 0.0051 Time of Perihelion: 2515315.1367 +/- 18.6 Perihelion: 34.27627055 +/- 0.0055 Aphelion: 85.15998908 +/- 0.0087 Period (y) 461.4955 +/- 0.06 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -76.02582002 +/- 0.0017 Ecliptic Y 23.55767871 +/- 0.0005 Ecliptic Z -4.22855544 +/- 0.0001 Ecliptic XDOT 0.00009618 +/- 0.0000 Ecliptic YDOT -0.00095361 +/- 0.0000 Ecliptic ZDOT 0.00124558 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 79.70446688 +/- 0.0016 Geocenter to KBO 78.75002298 +/- 0.0018 # Hcoef: 4.34
The following table shows the complete astrometric record for 17FO161. 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 (17FO161) followed by the observatory code and reference code for the source of the astrometry.
2012 03 19.34091 10 51 02.998 +03 59 34.08 23.4G 17FO161 F51 C~36TC 2012 03 19.35485 10 51 02.941 +03 59 34.45 22.8G 17FO161 F51 C~36TC 2012 03 19.36881 10 51 02.867 +03 59 34.98 23.4G 17FO161 F51 C~36TC 2012 03 19.38278 10 51 02.843 +03 59 35.23 23.0G 17FO161 F51 C~36TC 2013 02 15.47177 10 53 47.080 +04 02 00.26 22.8G 17FO161 F51 C~36TC 2013 03 05.41265 10 53 01.154 +04 07 40.57 23.0G 17FO161 F51 C~36TC 2013 03 05.42761 10 53 01.104 +04 07 40.80 23.0G 17FO161 F51 C~36TC 2013 03 05.44255 10 53 01.078 +04 07 40.98 23.0G 17FO161 F51 C~36TC 2013 03 05.45750 10 53 01.016 +04 07 41.51 23.0G 17FO161 F51 C~36TC 2014 01 24.55781 10 56 00.273 +04 08 35.73 22.7G 17FO161 F51 C~36TC 2014 02 26.47064 10 54 42.636 +04 18 04.35 22.8G 17FO161 F51 C~36TC 2014 02 26.48223 10 54 42.586 +04 18 04.28 22.2G 17FO161 F51 C~36TC 2014 02 26.49376 10 54 42.576 +04 18 04.27 23.5G 17FO161 F51 C~36TC 2014 02 26.50531 10 54 42.543 +04 18 04.87 23.4G 17FO161 F51 C~36TC 2014 03 06.35211 10 54 22.204 +04 20 37.28 22.6G 17FO161 F51 C~36TC 2015 01 16.51887 10 57 38.760 +04 19 23.62 23.4G 17FO161 F51 C~36TC 2015 01 19.56130 10 57 33.478 +04 20 03.22 17FO161 F51 C~36TC 2015 03 15.38034 10 55 23.067 +04 36 14.42 23.4G 17FO161 F51 C~36TC 2015 03 15.39270 10 55 23.012 +04 36 14.61 22.8G 17FO161 F51 C~36TC 2015 03 15.40502 10 55 22.983 +04 36 14.31 22.8G 17FO161 F51 C~36TC 2015 04 22.28714 10 54 01.168 +04 47 24.86 22.9G 17FO161 F51 C~36TC 2016 01 14.61112 10 59 06.044 +04 31 37.44 23.3G 17FO161 F51 C~36TC 2016 01 14.62234 10 59 06.038 +04 31 38.02 23.3G 17FO161 F51 C~36TC 2016 01 14.63360 10 59 06.013 +04 31 37.60 23.2G 17FO161 F51 C~36TC 2016 01 14.64483 10 59 05.972 +04 31 37.96 23.1G 17FO161 F51 C~36TC 2016 01 16.331389 10 59 03.26 +04 31 59.3 17FO161 W84 C~3k4s 2016 01 16.332286 10 59 03.25 +04 31 59.1 17FO161 W84 C~3k4s 2016 01 17.57835 10 59 01.160 +04 32 14.82 23.0G 17FO161 F51 C~36TC 2016 01 17.59041 10 59 01.136 +04 32 15.38 22.4G 17FO161 F51 C~36TC 2016 01 17.60245 10 59 01.091 +04 32 15.38 23.1G 17FO161 F51 C~36TC 2016 01 21.58499 10 58 54.046 +04 33 08.83 23.0G 17FO161 F51 C~36TC 2016 03 31.35271 10 56 06.289 +04 54 19.82 22.8G 17FO161 F51 C~36TC 2016 03 31.36496 10 56 06.273 +04 54 20.08 23.8G 17FO161 F51 C~36TC 2016 03 31.37721 10 56 06.239 +04 54 20.11 22.8G 17FO161 F51 C~36TC 2016 03 31.38951 10 56 06.210 +04 54 20.45 23.0G 17FO161 F51 C~36TC 2017 01 02.57475 11 00 45.452 +04 42 18.03 22.5G 17FO161 F51 C~36TC 2017 01 02.58652 11 00 45.446 +04 42 18.20 24.1G 17FO161 F51 C~36TC 2017 01 02.59825 11 00 45.422 +04 42 18.22 23.2G 17FO161 F51 C~36TC 2017 01 02.61002 11 00 45.408 +04 42 18.33 23.0G 17FO161 F51 C~36TC 2017 02 16.52162 10 59 19.085 +04 53 18.24 23.1G 17FO161 F51 C~36TC 2017 03 18.29191 10 58 02.465 +05 02 58.59 23.2G 17FO161 F51 C~36TC 2017 03 18.30358 10 58 02.404 +05 02 58.68 23.1G 17FO161 F51 C~36TC 2017 03 18.31522 10 58 02.386 +05 02 58.84 23.2G 17FO161 F51 C~36TC 2017 03 18.32694 10 58 02.318 +05 02 59.26 23.7G 17FO161 F51 C~36TC 2017 03 23.13730 10 57 50.425 +05 04 32.22 24.1r 17FO161 807 C~2b81 2017 03 23.13730 10 57 50.39 +05 04 32.1 23.3V 17FO161 W84 C~2y3A 2017 03 23.19683 10 57 50.260 +05 04 33.54 17FO161 807 C~2b81 2017 03 23.19683 10 57 50.24 +05 04 33.2 17FO161 W84 C~2y3A 2017 03 24.14054 10 57 47.960 +05 04 51.33 17FO161 807 C~2b81 2017 03 24.14054 10 57 47.94 +05 04 51.2 17FO161 W84 C~2y3A 2017 05 20.17658 10 56 17.838 +05 18 18.36 17FO161 G37 C~2b81 2017 05 20.19927 10 56 17.811 +05 18 18.56 17FO161 G37 C~2b81 2017 05 20.24493 10 56 17.795 +05 18 19.03 17FO161 G37 C~2b81 2017 05 20.27484 10 56 17.764 +05 18 18.94 17FO161 G37 C~2b81 2018 03 07.24780 10 59 56.061 +05 12 09.72 17FO161 G37 C~2b81 2018 03 07.30383 10 59 55.912 +05 12 10.70 17FO161 G37 C~2b81 2018 03 10.39254 10 59 47.870 +05 13 12.25 22.9G 17FO161 F51 C~35ci 2018 03 10.41609 10 59 47.812 +05 13 12.53 23.7G 17FO161 F51 C~35ci 2018 03 12.23446 10 59 43.088 +05 13 49.05 24.0r 17FO161 304 C~2b81 2018 03 12.29836 10 59 42.914 +05 13 50.49 17FO161 304 C~2b81 2018 03 18.38945 10 59 27.316 +05 15 49.47 22.7G 17FO161 F51 C~35ci 2018 03 19.162101 10 59 25.35 +05 16 04.6 24.1V 17FO161 W84 C~3k4s 2018 03 19.163252 10 59 25.35 +05 16 04.5 23.4V 17FO161 W84 C~3k4s 2018 04 13.30082 10 58 28.072 +05 23 39.83 23.1G 17FO161 F51 C~35ci 2018 04 13.31222 10 58 28.031 +05 23 40.09 23.0G 17FO161 F51 C~35ci 2018 04 13.32358 10 58 28.005 +05 23 40.24 22.5G 17FO161 F51 C~35ci 2018 04 13.33501 10 58 27.955 +05 23 40.18 22.7G 17FO161 F51 C~35ci 2019 01 15.52290 11 03 17.483 +05 10 12.23 22.9G 17FO161 F51 C~35ci 2019 01 15.53529 11 03 17.464 +05 10 12.58 22.9G 17FO161 F51 C~35ci 2019 01 15.54775 11 03 17.447 +05 10 12.64 22.9G 17FO161 F51 C~35ci 2019 02 04.53245 11 02 38.439 +05 15 18.24 23.7G 17FO161 F51 C~35ci 2019 04 03.29544 11 00 14.180 +05 33 42.44 23.3G 17FO161 F51 C~35ci 2019 04 03.31786 11 00 14.157 +05 33 42.73 22.7G 17FO161 F51 C~35ci 2019 04 03.32910 11 00 14.132 +05 33 42.81 22.9G 17FO161 F51 C~35ci 2024 03 13.274740 11 08 12.651 +06 33 04.19 22.8G 17FO161 G37 C~7wO6 2024 03 13.317230 11 08 12.537 +06 33 05.00 17FO161 G37 C~7wO6 2024 03 13.358410 11 08 12.447 +06 33 06.05 17FO161 G37 C~7wO6
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 0.43 0.00 -0.19
2 0.0000 0.00 0.10 0.00 -0.09
3 0.0001 0.00 -0.49 0.00 0.17
4 0.0001 0.00 -0.32 0.00 0.15
5 0.9121 0.00 0.09 0.00 -0.09
6 0.9612 0.00 0.19 0.00 0.07
7 0.9612 0.00 0.03 0.00 0.01
8 0.9613 0.00 0.23 0.00 -0.10
9 0.9613 0.00 -0.11 0.00 0.14
10 1.8514 0.00 0.73 0.00 -0.17
11 1.9415 0.00 -0.08 0.00 0.22
12 1.9415 0.00 -0.38 0.00 -0.07
13 1.9416 0.00 -0.07 0.00 -0.30
14 1.9416 0.00 -0.11 0.00 0.08
15 1.9631 0.00 -0.19 0.00 0.03
16 2.8287 0.00 -0.32 0.00 0.05
17 2.8370 0.00 0.04 0.00 0.19
18 2.9871 0.00 0.12 0.00 0.23
19 2.9871 0.00 -0.22 0.00 0.18
20 2.9872 0.00 -0.18 0.00 -0.37
21 3.0909 0.00 -0.16 0.00 -0.13
22 3.8228 0.00 -0.07 0.00 -0.22
23 3.8228 0.00 0.12 0.00 0.22
24 3.8228 0.00 0.02 0.00 -0.34
25 3.8229 0.00 -0.32 0.00 -0.11
26 3.8275 0.00 0.18 0.00 0.15
27 3.8275 0.00 0.05 0.00 -0.06
28 3.8309 0.00 0.20 0.00 -0.21
29 3.8309 0.00 0.15 0.00 0.20
30 3.8310 0.00 -0.21 0.00 0.04
31 3.8419 0.00 0.42 0.00 -0.08
32 4.0329 0.00 -0.01 0.00 -0.02
33 4.0329 0.00 0.18 0.00 0.02
34 4.0330 0.00 0.09 0.00 -0.17
35 4.0330 0.00 0.08 0.00 -0.06
36 4.7919 0.00 -0.04 0.00 -0.06
37 4.7919 0.00 0.08 0.00 0.00
38 4.7919 0.00 -0.08 0.00 -0.09
39 4.7920 0.00 -0.08 0.00 -0.09
40 4.9149 0.00 -0.12 0.00 -0.08
41 4.9964 0.00 0.29 0.00 0.07
42 4.9965 0.00 -0.18 0.00 -0.07
43 4.9965 0.00 -0.00 0.00 -0.13
44 4.9965 0.00 -0.57 0.00 0.06
45 5.0097 0.00 -0.05 0.00 -0.00
46 5.0097 0.00 0.47 0.00 0.12
47 5.0099 0.00 -0.08 0.00 -0.04
48 5.0099 0.00 0.22 0.00 0.30
49 5.0125 0.00 -0.05 0.00 -0.04
50 5.0125 0.00 0.25 0.00 0.09
51 5.1686 0.00 0.44 0.00 0.04
52 5.1687 0.00 0.20 0.00 0.07
53 5.1688 0.00 0.29 0.00 0.20
54 5.1689 0.00 0.04 0.00 -0.11
55 5.9655 0.00 -0.09 0.00 -0.04
56 5.9657 0.00 -0.10 0.00 -0.17
57 5.9741 0.00 -0.03 0.00 0.17
58 5.9742 0.00 0.03 0.00 -0.02
59 5.9792 0.00 -0.02 0.00 0.44
60 5.9793 0.00 -0.11 0.00 0.62
61 5.9960 0.00 0.06 0.00 0.01
62 5.9981 0.00 -0.12 0.00 -0.00
63 5.9981 0.00 -0.08 0.00 -0.13
64 6.0670 0.00 0.18 0.00 -0.02
65 6.0670 0.00 -0.09 0.00 0.05
66 6.0670 0.00 -0.14 0.00 0.02
67 6.0671 0.00 -0.55 0.00 -0.23
68 6.8260 0.00 -0.17 0.00 -0.09
69 6.8260 0.00 -0.15 0.00 0.10
70 6.8260 0.00 -0.09 0.00 -0.00
71 6.8807 0.00 -0.05 0.00 -0.08
72 7.0389 0.00 -0.42 0.00 0.14
73 7.0390 0.00 0.01 0.00 0.03
74 7.0390 0.00 0.02 0.00 -0.09
75 11.9834 0.00 0.03 0.00 -0.12
76 11.9835 0.00 0.02 0.00 -0.16
77 11.9836 0.00 0.31 0.00 0.06
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.
17FO161 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 59.667 59.666 59.667 ecceobj 0.427 0.427 0.427 incobj 54.370 54.370 54.370 qmin 32.748 33.057 30.366 qmax 88.830 87.676 90.574 amean 59.942 59.857 59.819 amin 59.168 59.134 59.128 amax 61.074 60.745 60.722 emean 0.425 0.435 0.440 emin 0.410 0.421 0.418 emax 0.455 0.447 0.492 imean 53.414 53.176 53.028 imin 52.708 52.810 51.646 imax 53.883 53.593 53.708 excite_mean 0.908 0.911 0.912 fracstop 1.000 1.000 1.000 cjmean 2.024 2.024 2.025 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 190.6 177.9 159.0 kozaiamp 41.8 33.5 13.3