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: 17FE173 # Created Thu Apr 25 01:18:16 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 35 observations of 35 # Arc: 6.86y # First observation: 2016/04/12 # Last observation: 2023/02/19 # Chi-squared of fit: 42.95 DOF: 64 RMS: 0.20 # Min/Max residuals: -0.41 0.62 # Exact a, adot, b, bdot, g, gdot: 1.557274E-05 2.066778E-02 7.966920E-06 1.090725E-02 2.151813E-02 7.178364E-03 # Covariance matrix: 1.2595E-13 -7.5853E-14 1.5910E-14 -2.6061E-14 -4.9327E-14 -4.0892E-13 -7.5853E-14 1.1293E-13 -2.5912E-14 3.9216E-14 -6.2857E-14 6.5693E-13 1.5910E-14 -2.5912E-14 9.5195E-14 -3.7650E-14 1.3925E-15 -1.9128E-13 -2.6061E-14 3.9216E-14 -3.7650E-14 3.6539E-14 1.1466E-14 3.0001E-13 -4.9327E-14 -6.2857E-14 1.3925E-15 1.1466E-14 6.0583E-13 2.7283E-15 -4.0892E-13 6.5693E-13 -1.9128E-13 3.0001E-13 2.7283E-15 4.8789E-12 # lat0 lon0 xBary yBary zBary JD0 14.289367 -156.571504 0.012108 0.246506 -0.967349 2457490.973432 # Heliocentric elements and errors Epoch: 2457490.5000 = 2016/04/12 Mean Anomaly: 9.60852 +/- 0.008 Argument of Peri: 342.48334 +/- 0.010 Long of Asc Node: 178.81338 +/- 0.000 Inclination: 30.90087 +/- 0.000 Eccentricity: 0.60745345 +/- 0.0002 Semi-Major Axis: 107.14524500 +/- 0.0549 Time of Perihelion: 2446678.3576 +/- 11.9 Perihelion: 42.05949628 +/- 0.0301 Aphelion: 172.23099372 +/- 0.0907 Period (y) 1109.0920 +/- 0.85 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.24602753 +/- 0.0015 Ecliptic Y -18.29451520 +/- 0.0007 Ecliptic Z 11.47068958 +/- 0.0004 Ecliptic XDOT 0.00054794 +/- 0.0000 Ecliptic YDOT -0.00263556 +/- 0.0000 Ecliptic ZDOT 0.00157028 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 47.44438629 +/- 0.0014 Geocenter to KBO 46.47222441 +/- 0.0017 # Hcoef: 7.00
The following table shows the complete astrometric record for 17FE173. 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 (17FE173) followed by the observatory code and reference code for the source of the astrometry.
2016 04 12.472643 13 47 43.21 +04 11 49.5 23.5i 17FE173 568 C~3xsC 2016 04 12.475108 13 47 43.20 +04 11 49.5 23.5i 17FE173 568 C~3xsC 2016 04 12.477580 13 47 43.18 +04 11 49.6 23.3i 17FE173 568 C~3xsC 2016 04 12.480062 13 47 43.18 +04 11 49.7 23.4i 17FE173 568 C~3xsC 2016 04 12.482528 13 47 43.17 +04 11 49.7 23.4i 17FE173 568 C~3xsC 2016 04 12.484996 13 47 43.16 +04 11 49.8 23.3i 17FE173 568 C~3xsC 2016 04 12.487473 13 47 43.15 +04 11 49.9 23.5i 17FE173 568 C~3xsC 2016 04 12.489936 13 47 43.13 +04 11 50.1 23.4i 17FE173 568 C~3xsC 2016 04 12.492402 13 47 43.12 +04 11 50.1 23.5i 17FE173 568 C~3xsC 2016 04 12.493823 13 47 43.12 +04 11 50.2 23.4i 17FE173 568 C~3xsC 2017 03 02.320972 13 55 14.14 +03 57 39.9 17FE173 W84 C~3xsC 2017 03 02.322106 13 55 14.13 +03 57 39.8 23.9g 17FE173 W84 C~3xsC 2017 03 23.30306 13 54 15.595 +04 09 35.74 24.0r 17FE173 807 C~3wr4 2017 03 24.24235 13 54 12.467 +04 10 07.78 24.0r 17FE173 807 C~3wr4 2017 03 24.33174 13 54 12.179 +04 10 10.78 23.9r 17FE173 807 C~3wr4 2017 03 30.346528 13 53 51.46 +04 13 30.5 23.6r 17FE173 W84 C~449d 2017 03 31.382240 13 53 47.75 +04 14 04.5 17FE173 W84 C~449d 2017 04 01.325278 13 53 44.38 +04 14 35.3 23.7r 17FE173 W84 C~3xsC 2017 04 01.327031 13 53 44.36 +04 14 35.3 24.3g 17FE173 W84 C~3xsC 2017 05 20.25283 13 50 43.782 +04 34 30.44 17FE173 G37 C~3wr4 2017 05 20.29560 13 50 43.661 +04 34 31.24 17FE173 G37 C~3wr4 2018 03 11.36008 14 00 04.817 +04 11 09.03 17FE173 304 C~3wr4 2018 03 11.39862 14 00 04.712 +04 11 10.56 23.9r 17FE173 304 C~3wr4 2018 03 12.36194 14 00 02.138 +04 11 43.30 17FE173 304 C~3wr4 2018 03 12.39692 14 00 02.034 +04 11 44.66 17FE173 304 C~3wr4 2018 03 12.40024 14 00 02.023 +04 11 44.66 17FE173 304 C~3wr4 2018 03 12.40396 14 00 02.016 +04 11 44.88 17FE173 304 C~3wr4 2018 04 12.278843 13 58 18.85 +04 28 36.9 23.3i 17FE173 W84 C~3xsC 2018 04 12.280231 13 58 18.84 +04 28 36.8 23.5i 17FE173 W84 C~3xsC 2018 05 14.27099 13 56 18.859 +04 41 18.72 17FE173 G37 C~3wr4 2018 05 14.29438 13 56 18.784 +04 41 19.06 17FE173 G37 C~3wr4 2019 02 28.34218 14 05 37.486 +04 13 06.05 23.9r 17FE173 304 C~3wr4 2019 03 01.34582 14 05 35.585 +04 13 39.61 23.9r 17FE173 304 C~3wr4 2023 02 18.36553 14 25 28.412 +04 38 52.31 24.0r 17FE173 304 C~6EpD 2023 02 19.36943 14 25 27.602 +04 39 23.41 24.0r 17FE173 304 C~6EpD
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 -0.07 0.00 0.04
2 0.0000 0.00 -0.08 0.00 -0.04
3 0.0000 0.00 -0.23 0.00 -0.01
4 0.0000 0.00 -0.08 0.00 0.02
5 0.0000 0.00 -0.09 0.00 -0.06
6 0.0000 0.00 -0.09 0.00 -0.03
7 0.0000 0.00 -0.10 0.00 -0.00
8 0.0000 0.00 -0.25 0.00 0.12
9 0.0001 0.00 -0.26 0.00 0.05
10 0.0001 0.00 -0.18 0.00 0.11
11 0.8866 0.00 0.25 0.00 -0.04
12 0.8867 0.00 0.13 0.00 -0.18
13 0.9441 0.00 0.35 0.00 0.14
14 0.9467 0.00 0.09 0.00 0.46
15 0.9469 0.00 0.33 0.00 0.45
16 0.9634 0.00 0.36 0.00 -0.16
17 0.9662 0.00 0.03 0.00 -0.09
18 0.9688 0.00 0.18 0.00 -0.00
19 0.9688 0.00 -0.03 0.00 -0.06
20 1.1028 0.00 0.33 0.00 -0.01
21 1.1029 0.00 0.62 0.00 0.21
22 1.9107 0.00 0.16 0.00 -0.19
23 1.9108 0.00 0.15 0.00 0.02
24 1.9135 0.00 0.04 0.00 -0.18
25 1.9136 0.00 -0.08 0.00 -0.02
26 1.9136 0.00 -0.10 0.00 -0.13
27 1.9136 0.00 -0.06 0.00 -0.04
28 1.9981 0.00 -0.26 0.00 -0.02
29 1.9981 0.00 -0.33 0.00 -0.16
30 2.0857 0.00 -0.27 0.00 -0.11
31 2.0858 0.00 -0.15 0.00 -0.16
32 2.8799 0.00 -0.30 0.00 -0.14
33 2.8826 0.00 -0.41 0.00 0.06
34 6.8525 0.00 0.07 0.00 0.16
35 6.8553 0.00 0.10 0.00 0.07
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.
17FE173 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 104.240 104.240 104.239 ecceobj 0.597 0.597 0.597 incobj 31.029 31.029 31.029 qmin 39.809 39.836 39.823 qmax 175.093 174.946 175.023 amean 105.302 105.304 105.302 amin 103.410 103.435 103.442 amax 108.059 108.050 108.128 emean 0.604 0.604 0.604 emin 0.590 0.591 0.590 emax 0.622 0.621 0.622 imean 30.139 30.140 30.139 imin 29.250 29.261 29.259 imax 30.959 30.958 30.959 excite_mean 0.786 0.786 0.786 fracstop 1.000 1.000 1.000 cjmean 2.864 2.864 2.864 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 94.8 94.9 94.7 kozaiamp 180.0 180.0 180.0