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: 17FU231 # Created Fri Nov 22 02:10:53 2024 # Orbit generated from Bernstein formalism # Fitting 76 observations of 76 # Arc: 3.00y # First observation: 2015/01/16 # Last observation: 2018/01/17 Preliminary a, adot, b, bdot, g, gdot: 0.000072 0.019720 -0.000051 -0.009653 0.023183 0.000000 # Chi-squared of fit: 47.16 DOF: 146 RMS: 0.14 # Min/Max residuals: -0.52 0.37 # Exact a, adot, b, bdot, g, gdot: 1.346995E-05 1.974445E-02 -6.422546E-06 -9.695136E-03 2.313505E-02 1.163215E-03 # Covariance matrix: 2.1038E-13 -1.1779E-13 -1.4354E-14 2.5040E-14 3.5410E-15 -8.3836E-13 -1.1779E-13 5.0065E-13 1.5694E-13 -2.5504E-13 5.6975E-13 8.3012E-12 -1.4354E-14 1.5694E-13 2.1864E-13 -1.6347E-13 1.9380E-13 2.8299E-12 2.5040E-14 -2.5504E-13 -1.6347E-13 1.8154E-13 -3.1268E-13 -4.6026E-12 3.5410E-15 5.6975E-13 1.9380E-13 -3.1268E-13 7.7673E-13 1.0147E-11 -8.3836E-13 8.3012E-12 2.8299E-12 -4.6026E-12 1.0147E-11 1.4986E-10 # lat0 lon0 xBary yBary zBary JD0 -8.534566 150.987184 0.566565 -0.118838 -0.792980 2457039.056753 # Heliocentric elements and errors Epoch: 2457030.5000 = 2015/01/08 Mean Anomaly: 66.68197 +/- 0.207 Argument of Peri: 127.11366 +/- 0.271 Long of Asc Node: 313.73772 +/- 0.000 Inclination: 27.40302 +/- 0.000 Eccentricity: 0.04313619 +/- 0.0005 Semi-Major Axis: 44.71475533 +/- 0.0025 Time of Perihelion: 2436801.2099 +/- 62.6 Perihelion: 42.78593123 +/- 0.0235 Aphelion: 46.64357943 +/- 0.0235 Period (y) 299.0092 +/- 0.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -37.81126713 +/- 0.0014 Ecliptic Y 21.61654885 +/- 0.0008 Ecliptic Z -6.41506750 +/- 0.0003 Ecliptic XDOT -0.00110729 +/- 0.0000 Ecliptic YDOT -0.00206528 +/- 0.0000 Ecliptic ZDOT -0.00115497 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.02408656 +/- 0.0013 Geocenter to KBO 43.22445712 +/- 0.0016 # Hcoef: 8.71
The following table shows the complete astrometric record for 17FU231. 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 (17FU231) followed by the observatory code and reference code for the source of the astrometry.
2015 01 16.555975 10 00 02.62 +03 07 53.4 17FU231 T09 C~81C5 2015 01 16.591616 10 00 02.48 +03 07 53.7 17FU231 T09 C~81C5 2015 01 17.354694 09 59 59.55 +03 08 00.0 17FU231 T09 C~81C5 2015 01 17.419011 09 59 59.30 +03 08 00.5 17FU231 T09 C~81C5 2016 03 07.30953 09 59 47.70 +02 26 48.9 25.6g 17FU231 T09 C~89Uf 2016 03 07.31343 09 59 47.70 +02 26 48.9 25.4g 17FU231 T09 C~89Uf 2016 03 07.31730 09 59 47.68 +02 26 48.7 25.7g 17FU231 T09 C~89Uf 2016 03 07.32114 09 59 47.64 +02 26 48.9 25.5g 17FU231 T09 C~89Uf 2016 03 07.32499 09 59 47.63 +02 26 49.0 25.6g 17FU231 T09 C~89Uf 2016 03 07.32886 09 59 47.61 +02 26 49.2 26.1g 17FU231 T09 C~89Uf 2016 03 09.29953 09 59 39.10 +02 27 32.5 25.3r 17FU231 T09 C~89Uf 2016 03 09.32069 09 59 38.99 +02 27 33.4 25.2r 17FU231 T09 C~89Uf 2016 03 09.32455 09 59 38.97 +02 27 33.4 24.7r 17FU231 T09 C~89Uf 2016 03 09.32844 09 59 38.97 +02 27 33.5 25.3r 17FU231 T09 C~89Uf 2016 03 09.34016 09 59 38.88 +02 27 33.9 25.1r 17FU231 T09 C~89Uf 2016 03 12.39109 09 59 25.96 +02 28 41.9 25.0z 17FU231 T09 C~89Uf 2016 03 12.42050 09 59 25.86 +02 28 42.7 25.4z 17FU231 T09 C~89Uf 2016 03 12.45077 09 59 25.73 +02 28 43.2 25.1z 17FU231 T09 C~89Uf 2016 03 12.46618 09 59 25.65 +02 28 43.4 24.4z 17FU231 T09 C~89Uf 2016 03 12.47004 09 59 25.64 +02 28 43.5 24.1z 17FU231 T09 C~89Uf 2016 03 12.47390 09 59 25.60 +02 28 43.5 24.3z 17FU231 T09 C~89Uf 2017 01 30.41709 10 06 00.84 +01 20 29.5 24.8i 17FU231 T09 C~7wO8 2017 01 30.46126 10 06 00.63 +01 20 30.0 24.6i 17FU231 T09 C~7wO8 2017 01 30.59415 10 06 00.04 +01 20 31.7 24.7z 17FU231 T09 C~7wO8 2017 01 30.61597 10 05 59.94 +01 20 32.0 24.3z 17FU231 T09 C~7wO8 2017 02 02.50623 10 05 47.25 +01 21 11.9 25.2r 17FU231 T09 C~7ujV 2017 02 02.57410 10 05 46.95 +01 21 12.7 24.2i 17FU231 T09 C~7ujV 2017 02 02.59348 10 05 46.87 +01 21 13.2 24.3i 17FU231 T09 C~7ujV 2017 02 23.46966 10 04 11.26 +01 27 24.9 25.4r 17FU231 T09 C~8HKw 2017 02 23.49694 10 04 11.13 +01 27 25.4 25.2r 17FU231 T09 C~8HKw 2017 02 23.51437 10 04 11.04 +01 27 25.7 25.0r 17FU231 T09 C~8HKw 2017 03 04.29603 10 03 31.18 +01 30 34.0 24.5z 17FU231 T09 C~7ujV 2017 03 04.32155 10 03 31.05 +01 30 34.5 24.5z 17FU231 T09 C~7ujV 2017 03 04.48135 10 03 30.31 +01 30 38.2 24.9i 17FU231 T09 C~7ujV 2017 03 04.50300 10 03 30.22 +01 30 38.6 25.1i 17FU231 T09 C~7ujV 2017 03 22.27563 10 02 16.36 +01 37 20.9 26.1g 17FU231 T09 C~7ujV 2017 03 22.28630 10 02 16.31 +01 37 21.4 25.8g 17FU231 T09 C~7ujV 2017 03 22.28946 10 02 16.28 +01 37 21.6 25.6g 17FU231 T09 C~7ujV 2017 03 22.30012 10 02 16.24 +01 37 21.6 25.5g 17FU231 T09 C~7ujV 2017 03 22.31401 10 02 16.20 +01 37 21.9 25.7g 17FU231 T09 C~7ujV 2017 03 23.24138 10 02 12.72 +01 37 42.9 24.7i 17FU231 T09 C~7ujV 2017 03 23.25564 10 02 12.65 +01 37 43.3 24.3i 17FU231 T09 C~7ujV 2017 03 23.26317 10 02 12.62 +01 37 43.5 24.5i 17FU231 T09 C~7ujV 2017 03 23.27742 10 02 12.57 +01 37 43.6 24.5i 17FU231 T09 C~7ujV 2017 03 23.28492 10 02 12.54 +01 37 44.0 25.1i 17FU231 T09 C~7ujV 2017 03 25.26248 10 02 05.25 +01 38 28.7 25.6r 17FU231 T09 C~7ujV 2017 03 25.26562 10 02 05.24 +01 38 28.5 25.0r 17FU231 T09 C~7ujV 2017 03 25.27935 10 02 05.20 +01 38 29.0 25.3r 17FU231 T09 C~7ujV 2017 03 25.28995 10 02 05.17 +01 38 29.0 25.3r 17FU231 T09 C~7ujV 2017 03 29.26967 10 01 51.14 +01 39 57.4 25.6g 17FU231 T09 C~7ujV 2017 03 29.29433 10 01 51.06 +01 39 58.2 25.7g 17FU231 T09 C~7ujV 2017 03 29.31142 10 01 51.00 +01 39 58.6 25.7g 17FU231 T09 C~7ujV 2017 03 30.25151 10 01 47.82 +01 40 19.2 25.5i 17FU231 T09 C~7ujV 2017 03 30.26700 10 01 47.78 +01 40 19.6 25.5i 17FU231 T09 C~7ujV 2017 03 30.28622 10 01 47.70 +01 40 19.9 26.1i 17FU231 T09 C~7ujV 2017 04 01.33958 10 01 40.96 +01 41 04.1 25.3r 17FU231 T09 C~7ujV 2017 04 01.34723 10 01 40.94 +01 41 04.6 25.5r 17FU231 T09 C~7ujV 2017 04 01.35489 10 01 40.91 +01 41 04.8 25.1r 17FU231 T09 C~7ujV 2017 04 23.24251 10 00 46.97 +01 48 04.4 25.0r 17FU231 T09 C~7ujV 2017 04 23.25033 10 00 46.97 +01 48 04.6 25.6r 17FU231 T09 C~7ujV 2017 04 23.25417 10 00 46.96 +01 48 04.6 25.4r 17FU231 T09 C~7ujV 2017 04 23.26183 10 00 46.94 +01 48 04.9 25.6r 17FU231 T09 C~7ujV 2017 04 26.23645 10 00 42.40 +01 48 51.1 24.6i 17FU231 T09 C~7ujV 2017 04 26.26326 10 00 42.36 +01 48 51.8 25.3i 17FU231 T09 C~7ujV 2017 04 26.28251 10 00 42.31 +01 48 51.8 25.2i 17FU231 T09 C~7ujV 2017 04 26.33400 10 00 42.27 +01 48 52.8 25.8g 17FU231 T09 C~7ujV 2017 04 27.34452 10 00 40.88 +01 49 07.7 24.8i 17FU231 T09 C~7ujV 2017 04 27.35218 10 00 40.88 +01 49 07.9 24.9i 17FU231 T09 C~7ujV 2017 04 27.36375 10 00 40.85 +01 49 07.9 24.6i 17FU231 T09 C~7ujV 2018 01 17.46727 10 10 22.06 +00 23 30.4 24.7i 17FU231 T09 C~81C5 2018 01 17.48332 10 10 22.00 +00 23 30.8 25.2i 17FU231 T09 C~81C5 2018 01 17.48599 10 10 21.99 +00 23 30.4 24.6i 17FU231 T09 C~81C5 2018 01 17.51296 10 10 21.89 +00 23 30.8 24.9i 17FU231 T09 C~81C5 2018 01 17.53998 10 10 21.78 +00 23 30.8 25.0i 17FU231 T09 C~81C5 2018 01 17.54803 10 10 21.75 +00 23 30.9 24.7i 17FU231 T09 C~81C5 2018 01 17.59901 10 10 21.56 +00 23 31.3 24.6i 17FU231 T09 C~81C5
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 0.01 0.00 -0.04
2 0.0001 -2.07 0.00 -0.45 -0.03
3 0.0022 -45.40 0.14 -9.83 0.10
4 0.0024 -49.08 0.21 -10.67 0.08
5 1.1383 649.02 -0.11 -2388.11 0.08
6 1.1383 649.02 0.17 -2388.11 0.09
7 1.1383 648.81 0.23 -2388.41 -0.19
8 1.1383 648.18 -0.14 -2388.43 -0.21
9 1.1383 648.00 -0.04 -2388.39 -0.15
10 1.1383 647.65 -0.12 -2388.30 -0.06
11 1.1437 513.01 0.25 -2392.13 -0.32
12 1.1438 511.15 -0.15 -2391.86 -0.01
13 1.1438 510.87 -0.16 -2391.97 -0.11
14 1.1438 510.84 0.07 -2391.88 -0.00
15 1.1438 509.43 -0.52 -2391.97 -0.08
16 1.1522 304.24 -0.24 -2395.66 0.10
17 1.1523 302.56 0.07 -2395.43 0.36
18 1.1523 300.55 0.11 -2395.64 0.19
19 1.1524 299.36 -0.04 -2395.87 -0.02
20 1.1524 299.19 0.05 -2395.83 0.03
21 1.1524 298.62 -0.26 -2396.04 -0.17
22 2.0393 7283.99 0.09 -4167.86 0.04
23 2.0394 7280.86 -0.08 -4168.49 -0.11
24 2.0398 7271.96 -0.10 -4169.99 -0.16
25 2.0399 7270.45 -0.15 -4170.23 -0.17
26 2.0478 7077.94 -0.19 -4199.28 0.03
27 2.0480 7073.44 -0.05 -4200.10 -0.10
28 2.0480 7072.14 -0.02 -4200.05 0.14
29 2.1052 5597.21 0.03 -4352.04 0.11
30 2.1052 5595.21 0.02 -4352.25 0.04
31 2.1053 5593.83 -0.08 -4352.44 -0.06
32 2.1293 4967.46 0.36 -4384.44 0.02
33 2.1294 4965.46 0.18 -4384.65 -0.11
34 2.1298 4953.76 -0.10 -4385.05 -0.04
35 2.1299 4952.35 0.04 -4385.15 -0.07
36 2.1786 3773.30 0.37 -4394.22 -0.08
37 2.1786 3772.42 0.15 -4394.01 0.11
38 2.1786 3771.93 -0.14 -4393.98 0.14
39 2.1786 3771.37 -0.04 -4394.19 -0.08
40 2.1787 3770.70 0.15 -4394.12 -0.02
41 2.1812 3714.44 0.21 -4392.62 0.03
42 2.1812 3713.32 -0.04 -4392.61 0.02
43 2.1813 3712.83 -0.07 -4392.58 0.04
44 2.1813 3712.09 0.07 -4392.75 -0.15
45 2.1813 3711.53 -0.03 -4392.53 0.06
46 2.1867 3593.43 -0.13 -4388.73 0.22
47 2.1867 3593.36 -0.01 -4388.97 -0.03
48 2.1868 3592.63 0.08 -4388.71 0.21
49 2.1868 3592.20 0.29 -4388.87 0.04
50 2.1977 3364.10 0.06 -4379.33 -0.12
51 2.1978 3362.70 0.06 -4378.99 0.15
52 2.1978 3361.72 0.04 -4378.93 0.17
53 2.2004 3309.82 -0.10 -4376.24 0.10
54 2.2004 3309.12 0.06 -4376.08 0.22
55 2.2005 3307.89 -0.09 -4376.21 0.04
56 2.2061 3197.71 0.14 -4370.00 -0.30
57 2.2061 3197.25 0.09 -4369.64 0.04
58 2.2062 3196.76 0.02 -4369.60 0.05
59 2.2661 2292.12 -0.09 -4258.05 0.01
60 2.2661 2292.05 0.07 -4257.86 0.15
61 2.2661 2291.91 0.04 -4257.91 0.08
62 2.2661 2291.52 -0.11 -4257.74 0.21
63 2.2743 2211.60 -0.00 -4238.14 -0.10
64 2.2744 2210.79 -0.11 -4237.69 0.18
65 2.2744 2210.09 -0.31 -4237.95 -0.21
66 2.2745 2209.18 0.12 -4237.22 0.19
67 2.2773 2184.44 -0.07 -4230.51 -0.06
68 2.2773 2184.37 0.05 -4230.33 0.07
69 2.2774 2183.95 -0.09 -4230.48 -0.16
70 3.0032 12163.37 -0.02 -6007.98 -0.11
71 3.0032 12162.39 -0.11 -6007.92 0.18
72 3.0032 12162.39 0.04 -6008.35 -0.21
73 3.0033 12160.83 0.01 -6008.50 0.03
74 3.0034 12159.28 -0.02 -6009.08 -0.17
75 3.0034 12158.83 -0.03 -6009.14 -0.12
76 3.0035 12156.00 0.02 -6009.76 -0.02
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.
17FU231 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 44.475 44.482 44.467 ecceobj 0.044 0.044 0.044 incobj 27.479 27.479 27.478 qmin 42.073 42.070 42.062 qmax 47.152 47.158 47.080 amean 44.512 44.520 44.503 amin 44.177 44.179 44.169 amax 44.861 44.882 44.842 emean 0.039 0.039 0.040 emin 0.029 0.028 0.029 emax 0.051 0.051 0.051 imean 28.862 28.864 28.861 imin 28.611 28.613 28.614 imax 29.092 29.099 29.093 excite_mean 0.484 0.484 0.484 fracstop 1.000 1.000 1.000 cjmean 2.804 2.804 2.804 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 180.3 182.0 179.5 kozaiamp 179.9 180.0 180.0