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: 17EO50 # Created Wed Jul 17 01:11:32 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 56 observations of 56 # Arc: 6.87y # First observation: 2013/04/03 # Last observation: 2020/02/14 # Chi-squared of fit: 21.21 DOF: 106 RMS: 0.11 # Min/Max residuals: -0.29 0.31 # Exact a, adot, b, bdot, g, gdot: 1.584702E-05 2.494644E-02 -2.330761E-06 -3.301350E-03 2.489572E-02 -1.212835E-03 # Covariance matrix: 1.4434E-12 -5.5937E-13 -1.0289E-13 5.3350E-14 -2.2298E-13 -1.9921E-12 -5.5937E-13 3.0248E-13 6.5403E-14 -3.5005E-14 1.1740E-14 1.2622E-12 -1.0289E-13 6.5403E-14 6.0030E-13 -1.4985E-13 3.2614E-15 3.0948E-13 5.3350E-14 -3.5005E-14 -1.4985E-13 4.0319E-14 -2.4343E-17 -1.6552E-13 -2.2298E-13 1.1740E-14 3.2614E-15 -2.4343E-17 2.0578E-13 6.9536E-14 -1.9921E-12 1.2622E-12 3.0948E-13 -1.6552E-13 6.9536E-14 5.9730E-12 # lat0 lon0 xBary yBary zBary JD0 -7.746991 143.518572 -0.765300 -0.086924 -0.639540 2456385.532368 # Heliocentric elements and errors Epoch: 2456386.5000 = 2013/04/04 Mean Anomaly: 337.04874 +/- 0.082 Argument of Peri: 252.46834 +/- 0.094 Long of Asc Node: 278.82536 +/- 0.002 Inclination: 10.57971 +/- 0.000 Eccentricity: 0.06712373 +/- 0.0001 Semi-Major Axis: 43.46921835 +/- 0.0038 Time of Perihelion: 2463060.3306 +/- 27.0 Perihelion: 40.55140208 +/- 0.0043 Aphelion: 46.38703461 +/- 0.0047 Period (y) 286.6031 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.97554606 +/- 0.0006 Ecliptic Y 23.43454752 +/- 0.0004 Ecliptic Z -5.41465729 +/- 0.0001 Ecliptic XDOT -0.00149182 +/- 0.0000 Ecliptic YDOT -0.00231311 +/- 0.0000 Ecliptic ZDOT -0.00034163 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.81525000 +/- 0.0005 Geocenter to KBO 40.16761238 +/- 0.0007 # Hcoef: 7.14
The following table shows the complete astrometric record for 17EO50. 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 (17EO50) followed by the observatory code and reference code for the source of the astrometry.
2013 04 03.031590 09 33 08.77 +06 21 14.0 17EO50 W84 C~81By 2016 12 23.46867 10 00 46.97 +03 13 55.2 22.7z 17EO50 T09 C~7n3f 2016 12 23.51848 10 00 46.86 +03 13 55.0 23.2z 17EO50 T09 C~7n3f 2016 12 23.58951 10 00 46.68 +03 13 55.0 23.3z 17EO50 T09 C~7n3f 2016 12 23.63426 10 00 46.58 +03 13 55.0 23.4z 17EO50 T09 C~7n3f 2016 12 25.51058 10 00 42.12 +03 13 54.7 23.4r 17EO50 T09 C~7n3f 2016 12 25.58308 10 00 41.94 +03 13 54.7 23.1i 17EO50 T09 C~7n3f 2016 12 25.60907 10 00 41.87 +03 13 54.5 23.4i 17EO50 T09 C~7n3f 2017 01 02.54073 10 00 19.80 +03 14 15.3 23.1i 17EO50 T09 C~7n3f 2017 01 02.54410 10 00 19.79 +03 14 15.1 22.8i 17EO50 T09 C~7n3f 2017 01 02.56030 10 00 19.73 +03 14 15.1 23.0i 17EO50 T09 C~7n3f 2017 01 02.64649 10 00 19.45 +03 14 15.8 23.6g 17EO50 T09 C~7n3f 2017 01 02.64928 10 00 19.45 +03 14 15.8 23.7g 17EO50 T09 C~7n3f 2017 01 21.42316 09 59 10.10 +03 17 21.8 22.6z 17EO50 T09 C~7n3f 2017 01 21.42903 09 59 10.08 +03 17 21.8 22.7z 17EO50 T09 C~7n3f 2017 01 21.46362 09 59 09.93 +03 17 22.3 22.7z 17EO50 T09 C~7n3f 2017 01 21.46896 09 59 09.91 +03 17 22.3 22.6z 17EO50 T09 C~7n3f 2017 01 21.47486 09 59 09.88 +03 17 22.3 22.7z 17EO50 T09 C~7n3f 2017 01 21.50089 09 59 09.78 +03 17 22.8 22.7z 17EO50 T09 C~7n3f 2017 01 21.52708 09 59 09.66 +03 17 23.1 22.8z 17EO50 T09 C~7n3f 2017 01 21.58938 09 59 09.40 +03 17 24.1 23.1z 17EO50 T09 C~7n3f 2017 01 23.35517 09 59 01.88 +03 17 50.8 23.5r 17EO50 T09 C~7n3f 2017 01 23.37982 09 59 01.77 +03 17 51.1 23.4r 17EO50 T09 C~7n3f 2017 01 23.38883 09 59 01.74 +03 17 51.3 23.4r 17EO50 T09 C~7n3f 2017 01 23.40271 09 59 01.67 +03 17 51.4 23.3r 17EO50 T09 C~7n3f 2017 01 23.42310 09 59 01.60 +03 17 51.9 23.5r 17EO50 T09 C~7n3f 2017 01 23.44005 09 59 01.51 +03 17 52.1 23.6r 17EO50 T09 C~7n3f 2017 01 23.45653 09 59 01.44 +03 17 52.3 23.4r 17EO50 T09 C~7n3f 2017 01 23.50979 09 59 01.22 +03 17 53.1 23.0i 17EO50 T09 C~7n3f 2017 01 23.54000 09 59 01.07 +03 17 53.6 23.0i 17EO50 T09 C~7n3f 2017 01 23.55094 09 59 01.04 +03 17 53.8 23.0i 17EO50 T09 C~7n3f 2017 01 23.57255 09 59 00.94 +03 17 54.0 22.9i 17EO50 T09 C~7n3f 2017 01 23.58131 09 59 00.89 +03 17 54.3 23.0i 17EO50 T09 C~7n3f 2017 01 30.42829 09 58 30.49 +03 19 51.3 23.2i 17EO50 T09 C~7n3f 2017 01 30.45035 09 58 30.40 +03 19 51.6 23.1i 17EO50 T09 C~7n3f 2017 01 30.52066 09 58 30.05 +03 19 53.0 22.8z 17EO50 T09 C~7n3f 2017 01 30.58347 09 58 29.76 +03 19 54.1 22.8z 17EO50 T09 C~7n3f 2017 01 30.60540 09 58 29.66 +03 19 54.6 22.6z 17EO50 T09 C~7n3f 2017 02 21.31699 09 56 46.63 +03 27 56.5 23.1z 17EO50 T09 C~7n3f 2017 02 21.34253 09 56 46.49 +03 27 56.8 22.9z 17EO50 T09 C~7n3f 2017 02 21.36806 09 56 46.37 +03 27 57.5 22.8z 17EO50 T09 C~7n3f 2017 02 21.39368 09 56 46.24 +03 27 58.1 22.8z 17EO50 T09 C~7n3f 2017 02 21.41563 09 56 46.14 +03 27 58.6 23.0z 17EO50 T09 C~7n3f 2017 02 23.46231 09 56 36.37 +03 28 50.3 23.2r 17EO50 T09 C~7n3f 2017 02 23.47596 09 56 36.30 +03 28 50.6 23.1r 17EO50 T09 C~7n3f 2017 02 23.48959 09 56 36.23 +03 28 51.1 23.4r 17EO50 T09 C~7n3f 2017 02 23.50705 09 56 36.15 +03 28 51.6 23.2r 17EO50 T09 C~7n3f 2017 03 04.25993 09 55 55.19 +03 32 39.5 22.7z 17EO50 T09 C~7n3f 2017 03 04.28551 09 55 55.08 +03 32 40.1 23.0z 17EO50 T09 C~7n3f 2017 03 04.44888 09 55 54.32 +03 32 44.3 23.1i 17EO50 T09 C~7n3f 2017 03 04.47080 09 55 54.23 +03 32 45.0 23.2i 17EO50 T09 C~7n3f 2019 02 05.36641 10 08 32.38 +02 02 01.4 23.5i 17EO50 T09 C~81By 2019 02 05.40928 10 08 32.16 +02 02 01.9 23.0i 17EO50 T09 C~81By 2019 02 05.42270 10 08 32.11 +02 02 02.2 22.9i 17EO50 T09 C~81By 2019 03 03.325025 10 06 29.31 +02 12 27.1 17EO50 T09 C~81By 2020 02 14.276162 10 13 04.88 +01 25 12.7 17EO50 W84 C~81By
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 0.02 0.00 0.05
2 3.7247 0.00 -0.04 0.00 0.06
3 3.7248 0.00 0.07 0.00 -0.10
4 3.7250 0.00 -0.09 0.00 -0.04
5 3.7251 0.00 0.02 0.00 -0.00
6 3.7303 0.00 0.05 0.00 0.21
7 3.7305 0.00 0.12 0.00 0.18
8 3.7305 0.00 0.07 0.00 -0.02
9 3.7522 0.00 0.07 0.00 0.12
10 3.7523 0.00 0.08 0.00 -0.09
11 3.7523 0.00 -0.05 0.00 -0.17
12 3.7525 0.00 -0.15 0.00 0.11
13 3.7525 0.00 -0.02 0.00 0.09
14 3.8039 0.00 -0.14 0.00 0.15
15 3.8040 0.00 -0.06 0.00 0.07
16 3.8041 0.00 -0.08 0.00 0.06
17 3.8041 0.00 -0.03 0.00 -0.02
18 3.8041 0.00 -0.10 0.00 -0.10
19 3.8042 0.00 0.08 0.00 0.02
20 3.8042 0.00 -0.03 0.00 -0.07
21 3.8044 0.00 0.09 0.00 0.02
22 3.8092 0.00 -0.09 0.00 0.07
23 3.8093 0.00 -0.13 0.00 -0.01
24 3.8093 0.00 0.01 0.00 0.05
25 3.8094 0.00 -0.13 0.00 -0.07
26 3.8094 0.00 0.16 0.00 0.12
27 3.8095 0.00 -0.08 0.00 0.05
28 3.8095 0.00 -0.04 0.00 -0.00
29 3.8097 0.00 0.17 0.00 -0.03
30 3.8097 0.00 -0.09 0.00 -0.00
31 3.8098 0.00 0.18 0.00 0.03
32 3.8098 0.00 0.10 0.00 -0.11
33 3.8099 0.00 -0.07 0.00 0.05
34 3.8286 0.00 0.06 0.00 0.04
35 3.8287 0.00 0.25 0.00 -0.07
36 3.8289 0.00 -0.10 0.00 0.03
37 3.8290 0.00 -0.07 0.00 -0.04
38 3.8291 0.00 -0.05 0.00 0.06
39 3.8885 0.00 0.14 0.00 0.31
40 3.8886 0.00 -0.10 0.00 -0.03
41 3.8887 0.00 -0.04 0.00 0.03
42 3.8887 0.00 -0.12 0.00 -0.02
43 3.8888 0.00 -0.01 0.00 -0.07
44 3.8944 0.00 0.12 0.00 -0.06
45 3.8944 0.00 0.06 0.00 -0.11
46 3.8945 0.00 0.01 0.00 0.04
47 3.8945 0.00 0.07 0.00 0.10
48 3.9185 0.00 -0.22 0.00 -0.08
49 3.9186 0.00 -0.09 0.00 -0.16
50 3.9190 0.00 -0.09 0.00 -0.29
51 3.9191 0.00 0.09 0.00 -0.17
52 5.8435 0.00 0.07 0.00 0.14
53 5.8436 0.00 -0.21 0.00 -0.23
54 5.8436 0.00 -0.02 0.00 -0.20
55 5.9146 0.00 -0.03 0.00 0.03
56 6.8672 0.00 0.18 0.00 0.25
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.
17EO50 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.335 43.334 43.335 ecceobj 0.063 0.063 0.063 incobj 10.583 10.583 10.583 qmin 39.969 39.982 39.958 qmax 46.969 46.977 46.966 amean 43.358 43.358 43.358 amin 43.028 43.027 43.015 amax 43.715 43.712 43.715 emean 0.061 0.061 0.061 emin 0.048 0.048 0.048 emax 0.075 0.075 0.075 imean 12.329 12.329 12.329 imin 11.707 11.706 11.709 imax 12.826 12.827 12.826 excite_mean 0.222 0.222 0.222 fracstop 1.000 1.000 1.000 cjmean 3.034 3.034 3.034 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 185.2 185.3 185.2 kozaiamp 179.9 179.9 180.0