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: 17EY59 # Created Wed Nov 27 02:10:50 2024 # Orbit generated from Bernstein formalism # Fitting 19 observations of 19 # Arc: 24.96d # First observation: 2017/03/04 # Last observation: 2017/03/29 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.030890 0.000001 0.001946 0.025890 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 12.71 DOF: 33 RMS: 0.14 # Min/Max residuals: -0.27 0.32 # Exact a, adot, b, bdot, g, gdot: 1.563456E-05 2.551087E-02 1.404083E-06 2.288539E-03 2.503010E-02 -7.059909E-03 # Covariance matrix: 6.5054E-13 5.3589E-10 5.6519E-14 -3.4117E-11 8.7729E-11 -4.3504E-09 5.3589E-10 8.2840E-07 9.1251E-11 -5.2748E-08 1.3189E-07 -8.6522E-06 5.6519E-14 9.1251E-11 2.6571E-13 -1.0406E-11 1.4412E-11 -1.0454E-09 -3.4117E-11 -5.2748E-08 -1.0406E-11 3.4790E-09 -8.3876E-09 5.6021E-07 8.7729E-11 1.3189E-07 1.4412E-11 -8.3876E-09 2.1068E-08 -1.3269E-06 -4.3504E-09 -8.6522E-06 -1.0454E-09 5.6021E-07 -1.3269E-06 1.2991E-04 # lat0 lon0 xBary yBary zBary JD0 -8.627593 152.113107 -0.195890 -0.145412 -0.959333 2457816.953241 # Heliocentric elements and errors Epoch: 2457810.5000 = 2017/02/26 Mean Anomaly: 318.47774 +/- 25.157 Argument of Peri: 14.24673 +/- 17.408 Long of Asc Node: 210.59810 +/- 1.237 Inclination: 9.88401 +/- 0.131 Eccentricity: 0.31043276 +/- 0.4837 Semi-Major Axis: 49.42548324 +/- 18.7060 Time of Perihelion: 2472449.2271 +/- 3098.4 Perihelion: 34.08219399 +/- 27.1634 Aphelion: 64.76877250 +/- 34.2396 Period (y) 347.4838 +/- 197.27 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.86554039 +/- 0.2024 Ecliptic Y 18.75093990 +/- 0.1072 Ecliptic Z -5.99318089 +/- 0.0348 Ecliptic XDOT -0.00066027 +/- 0.0011 Ecliptic YDOT -0.00281257 +/- 0.0006 Ecliptic ZDOT 0.00036327 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 40.91274804 +/- 0.1842 Geocenter to KBO 39.95189502 +/- 0.2317 # Hcoef: 9.03
The following table shows the complete astrometric record for 17EY59. 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 (17EY59) followed by the observatory code and reference code for the source of the astrometry.
2017 03 04.45244 10 04 05.39 +02 39 16.2 24.7i 17EY59 T09 C~8HKl 2017 03 04.47432 10 04 05.28 +02 39 16.9 25.0i 17EY59 T09 C~8HKl 2017 03 04.49602 10 04 05.18 +02 39 17.6 24.9i 17EY59 T09 C~8HKl 2017 03 06.50200 10 03 56.20 +02 40 16.8 25.5r 17EY59 T09 C~8HKl 2017 03 06.51583 10 03 56.15 +02 40 17.3 25.1r 17EY59 T09 C~8HKl 2017 03 06.52957 10 03 56.09 +02 40 17.4 25.3r 17EY59 T09 C~8HKl 2017 03 22.43886 10 02 50.15 +02 48 11.3 24.9z 17EY59 T09 C~8HKl 2017 03 22.46449 10 02 50.06 +02 48 11.6 24.7z 17EY59 T09 C~8HKl 2017 03 22.48627 10 02 49.95 +02 48 12.5 24.1z 17EY59 T09 C~8HKl 2017 03 23.24858 10 02 47.11 +02 48 35.2 25.0i 17EY59 T09 C~8HKl 2017 03 23.25932 10 02 47.07 +02 48 35.3 24.7i 17EY59 T09 C~8HKl 2017 03 23.27035 10 02 47.04 +02 48 35.7 25.0i 17EY59 T09 C~8HKl 2017 03 25.23822 10 02 39.82 +02 49 33.3 25.2r 17EY59 T09 C~8Meo 2017 03 25.25752 10 02 39.71 +02 49 34.0 25.5r 17EY59 T09 C~8Meo 2017 03 25.28496 10 02 39.63 +02 49 34.7 25.1r 17EY59 T09 C~8Meo 2017 03 25.29309 10 02 39.61 +02 49 34.7 26.0r 17EY59 T09 C~8Meo 2017 03 29.28925 10 02 25.60 +02 51 30.5 25.6g 17EY59 T09 C~8HKl 2017 03 29.39490 10 02 25.22 +02 51 33.3 24.4z 17EY59 T09 C~8HKl 2017 03 29.41023 10 02 25.18 +02 51 33.7 24.5z 17EY59 T09 C~8HKl
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 0.10 0.00 0.01
2 0.0001 -1.79 -0.06 0.08 0.01
3 0.0001 -3.44 -0.09 0.20 0.06
4 0.0056 -150.22 -0.12 8.26 -0.03
5 0.0056 -151.10 0.02 8.46 0.13
6 0.0057 -151.97 0.16 8.24 -0.15
7 0.0492 -1243.52 -0.03 104.25 0.11
8 0.0493 -1244.89 0.25 104.06 -0.27
9 0.0494 -1246.75 -0.21 104.32 -0.17
10 0.0515 -1294.57 -0.22 110.60 0.11
11 0.0515 -1295.16 -0.13 110.49 -0.08
12 0.0515 -1295.72 0.02 110.70 0.05
13 0.0569 -1417.25 0.32 126.58 0.14
14 0.0570 -1419.04 -0.27 126.66 0.07
15 0.0570 -1420.40 0.07 126.89 0.09
16 0.0571 -1420.68 0.30 126.79 -0.08
17 0.0680 -1657.91 -0.02 161.38 0.18
18 0.0683 -1664.22 -0.15 162.00 -0.10
19 0.0683 -1664.92 0.05 162.16 -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.