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: 17BS254 # Created Sun Dec 22 02:10:56 2024 # Orbit generated from Bernstein formalism # Fitting 37 observations of 37 # Arc: 70.98d # First observation: 2016/12/23 # Last observation: 2017/03/04 Preliminary a, adot, b, bdot, g, gdot: 0.000005 0.026647 0.000009 0.004187 0.025330 0.000000 # Chi-squared of fit: 33.78 DOF: 68 RMS: 0.17 # Min/Max residuals: -0.35 0.70 # Exact a, adot, b, bdot, g, gdot: 1.713492E-05 2.492682E-02 2.606308E-06 4.069340E-03 2.475993E-02 -2.116695E-03 # Covariance matrix: 4.6556E-13 -9.0661E-12 -1.0419E-14 -3.5000E-13 -4.5733E-13 2.0104E-10 -9.0661E-12 6.4245E-09 3.5381E-11 3.6656E-10 1.5142E-09 9.6131E-08 -1.0419E-14 3.5381E-11 4.0223E-13 4.4137E-13 8.5179E-12 5.6875E-10 -3.5000E-13 3.6656E-10 4.4137E-13 3.6416E-11 8.7000E-11 5.5937E-09 -4.5733E-13 1.5142E-09 8.5179E-12 8.7000E-11 3.6447E-10 2.4326E-08 2.0104E-10 9.6131E-08 5.6875E-10 5.5937E-09 2.4326E-08 1.8284E-06 # lat0 lon0 xBary yBary zBary JD0 -8.399163 151.326657 0.852552 -0.072570 -0.492849 2457745.969459 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 316.35489 +/- 9.744 Argument of Peri: 13.26443 +/- 15.569 Long of Asc Node: 192.15915 +/- 0.110 Inclination: 12.28470 +/- 0.026 Eccentricity: 0.13770572 +/- 0.0442 Semi-Major Axis: 44.89419676 +/- 0.3532 Time of Perihelion: 2471060.8858 +/- 2969.6 Perihelion: 38.71200908 +/- 2.0079 Aphelion: 51.07638444 +/- 2.0249 Period (y) 300.8109 +/- 3.55 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.08675846 +/- 0.0270 Ecliptic Y 20.15341076 +/- 0.0148 Ecliptic Z -5.89933215 +/- 0.0046 Ecliptic XDOT -0.00117449 +/- 0.0001 Ecliptic YDOT -0.00250457 +/- 0.0001 Ecliptic ZDOT 0.00047928 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.89061878 +/- 0.0243 Geocenter to KBO 40.38784179 +/- 0.0311 # Hcoef: 9.01
The following table shows the complete astrometric record for 17BS254. 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 (17BS254) followed by the observatory code and reference code for the source of the astrometry.
2016 12 23.46867 10 01 29.61 +03 08 28.4 25.1z 17BS254 T09 C~8HKE 2016 12 23.58951 10 01 29.35 +03 08 28.6 24.8z 17BS254 T09 C~8HKE 2016 12 23.63426 10 01 29.26 +03 08 28.6 25.3z 17BS254 T09 C~8HKE 2017 01 21.42316 09 59 56.18 +03 13 37.9 24.3z 17BS254 T09 C~8HKE 2017 01 21.42903 09 59 56.16 +03 13 37.9 25.0z 17BS254 T09 C~8HKE 2017 01 21.46362 09 59 56.02 +03 13 38.6 24.3z 17BS254 T09 C~8HKE 2017 01 21.47848 09 59 55.95 +03 13 38.8 24.4z 17BS254 T09 C~8HKE 2017 01 21.52708 09 59 55.74 +03 13 39.8 24.6z 17BS254 T09 C~8HKE 2017 01 21.54935 09 59 55.66 +03 13 40.3 24.1z 17BS254 T09 C~8HKE 2017 01 21.58938 09 59 55.50 +03 13 40.9 24.1z 17BS254 T09 C~8HKE 2017 01 23.35517 09 59 48.18 +03 14 14.0 25.4r 17BS254 T09 C~8HKE 2017 01 23.37982 09 59 48.07 +03 14 14.7 25.6r 17BS254 T09 C~8HKE 2017 01 23.38262 09 59 48.08 +03 14 14.5 25.4r 17BS254 T09 C~8HKE 2017 01 23.38883 09 59 48.08 +03 14 15.2 25.8r 17BS254 T09 C~8HKE 2017 01 23.40271 09 59 48.00 +03 14 15.0 25.6r 17BS254 T09 C~8HKE 2017 01 23.42310 09 59 47.90 +03 14 15.5 25.3r 17BS254 T09 C~8HKE 2017 01 23.44005 09 59 47.83 +03 14 15.7 25.9r 17BS254 T09 C~8HKE 2017 01 23.45653 09 59 47.76 +03 14 15.8 25.1r 17BS254 T09 C~8HKE 2017 01 23.49071 09 59 47.61 +03 14 16.5 25.1i 17BS254 T09 C~8HKE 2017 01 23.50979 09 59 47.53 +03 14 17.0 25.0i 17BS254 T09 C~8HKE 2017 01 23.54000 09 59 47.42 +03 14 17.7 24.9i 17BS254 T09 C~8HKE 2017 01 23.55094 09 59 47.34 +03 14 17.7 25.2i 17BS254 T09 C~8HKE 2017 01 23.58131 09 59 47.21 +03 14 18.2 24.9i 17BS254 T09 C~8HKE 2017 01 30.45035 09 59 17.53 +03 16 40.5 25.0i 17BS254 T09 C~8HKE 2017 01 30.55762 09 59 17.01 +03 16 42.8 23.9z 17BS254 T09 C~8HKE 2017 01 30.58347 09 59 16.92 +03 16 43.3 24.5z 17BS254 T09 C~8HKE 2017 01 30.60540 09 59 16.81 +03 16 43.8 24.4z 17BS254 T09 C~8HKE 2017 02 21.31699 09 57 36.24 +03 26 03.7 24.8z 17BS254 T09 C~8HKE 2017 02 21.39368 09 57 35.88 +03 26 06.0 24.4z 17BS254 T09 C~8HKE 2017 02 21.41563 09 57 35.77 +03 26 07.2 24.4z 17BS254 T09 C~8HKE 2017 02 23.46231 09 57 26.21 +03 27 06.1 25.4r 17BS254 T09 C~8HKE 2017 02 23.47596 09 57 26.14 +03 27 06.2 25.3r 17BS254 T09 C~8HKE 2017 02 23.48959 09 57 26.08 +03 27 06.6 25.6r 17BS254 T09 C~8HKE 2017 02 23.50705 09 57 26.00 +03 27 06.9 25.4r 17BS254 T09 C~8HKE 2017 03 04.31098 09 56 45.75 +03 31 28.3 25.4z 17BS254 T09 C~8HKE 2017 03 04.33650 09 56 45.64 +03 31 28.8 25.0z 17BS254 T09 C~8HKE 2017 03 04.44888 09 56 45.13 +03 31 32.5 24.6i 17BS254 T09 C~8HKE
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 -0.25 0.00 -0.00
2 0.0003 -3.72 -0.03 -1.17 -0.05
3 0.0005 -4.98 0.18 -1.64 -0.10
4 0.0793 -1419.27 -0.01 -198.84 -0.09
5 0.0793 -1419.55 0.09 -198.94 -0.17
6 0.0794 -1421.76 0.13 -199.02 -0.08
7 0.0794 -1422.81 0.04 -199.20 -0.19
8 0.0796 -1426.11 -0.09 -199.36 -0.12
9 0.0796 -1427.40 0.06 -199.31 0.04
10 0.0797 -1429.86 0.21 -199.58 -0.04
11 0.0846 -1544.15 -0.12 -206.84 -0.04
12 0.0846 -1545.94 -0.28 -206.76 0.14
13 0.0846 -1545.73 0.12 -206.90 0.02
14 0.0847 -1545.97 0.28 -206.24 0.70
15 0.0847 -1547.02 0.15 -206.85 0.16
16 0.0847 -1548.60 -0.07 -206.90 0.19
17 0.0848 -1549.65 0.00 -207.08 0.09
18 0.0848 -1550.67 0.08 -207.35 -0.12
19 0.0849 -1553.02 0.01 -207.48 -0.09
20 0.0850 -1554.32 -0.01 -207.43 0.04
21 0.0851 -1556.11 0.21 -207.35 0.26
22 0.0851 -1557.23 -0.18 -207.77 -0.12
23 0.0852 -1559.23 -0.15 -207.98 -0.19
24 0.1040 -2025.46 0.10 -229.79 0.11
25 0.1043 -2033.56 -0.35 -230.36 -0.14
26 0.1044 -2035.00 0.05 -230.36 -0.06
27 0.1044 -2036.71 -0.11 -230.46 -0.11
28 0.1639 -3643.70 0.07 -231.04 -0.15
29 0.1641 -3649.56 0.10 -230.77 -0.03
30 0.1641 -3651.52 -0.18 -230.22 0.48
31 0.1697 -3806.27 -0.15 -224.91 0.28
32 0.1698 -3807.29 -0.12 -225.18 -0.03
33 0.1698 -3808.27 -0.06 -225.12 -0.00
34 0.1699 -3809.49 0.05 -225.26 -0.18
35 0.1940 -4465.71 -0.01 -190.25 -0.08
36 0.1940 -4467.43 0.16 -190.35 -0.30
37 0.1943 -4475.88 0.07 -189.54 -0.00
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.
17BS254 quality flag:1 Type: SCATEXTD SCATNEAR CLASSICAL axisobj 44.653 45.988 44.307 ecceobj 0.130 0.259 0.119 incobj 12.324 12.402 12.341 qmin 38.020 33.145 38.150 qmax 51.741 60.204 50.659 amean 44.713 46.317 44.314 amin 44.345 45.551 43.951 amax 45.125 47.248 44.717 emean 0.133 0.260 0.121 emin 0.120 0.237 0.108 emax 0.147 0.284 0.134 imean 12.515 12.616 12.536 imin 11.918 11.312 11.988 imax 13.103 14.237 13.147 excite_mean 0.254 0.340 0.249 fracstop 1.000 1.000 1.000 cjmean 3.031 2.987 3.030 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 179.0 178.9 179.9 kozaiamp 180.0 180.0 180.0