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: 17EJ53 # Created Fri Nov 22 02:10:53 2024 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 70.96d # First observation: 2016/12/25 # Last observation: 2017/03/06 Preliminary a, adot, b, bdot, g, gdot: 0.000002 0.022849 0.000004 -0.000094 0.023908 0.000000 # Chi-squared of fit: 7.36 DOF: 22 RMS: 0.13 # Min/Max residuals: -0.27 0.24 # Exact a, adot, b, bdot, g, gdot: 1.491628E-05 2.207204E-02 1.352421E-07 -1.275188E-04 2.358195E-02 -1.161703E-03 # Covariance matrix: 4.8242E-13 -3.6860E-12 2.0251E-14 -2.5538E-13 8.1442E-13 2.6894E-10 -3.6860E-12 6.6062E-09 3.1045E-11 4.0246E-10 1.4365E-09 7.1936E-08 2.0251E-14 3.1045E-11 4.9013E-13 -1.8819E-13 6.9968E-12 3.9477E-10 -2.5538E-13 4.0246E-10 -1.8819E-13 4.2717E-11 8.6485E-11 4.0835E-09 8.1442E-13 1.4365E-09 6.9968E-12 8.6485E-11 3.2276E-10 1.8022E-08 2.6894E-10 7.1936E-08 3.9477E-10 4.0835E-09 1.8022E-08 1.3580E-06 # lat0 lon0 xBary yBary zBary JD0 -12.524706 149.574543 0.817663 -0.119776 -0.540085 2457747.969449 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 245.26052 +/- 15.968 Argument of Peri: 30.36544 +/- 15.745 Long of Asc Node: 241.20920 +/- 0.070 Inclination: 12.37593 +/- 0.001 Eccentricity: 0.08386304 +/- 0.0450 Semi-Major Axis: 41.28014231 +/- 0.1629 Time of Perihelion: 2488616.4688 +/- 4293.0 Perihelion: 37.81826397 +/- 1.8637 Aphelion: 44.74202065 +/- 1.8661 Period (y) 265.2284 +/- 1.57 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.76211989 +/- 0.0272 Ecliptic Y 21.94449894 +/- 0.0160 Ecliptic Z -9.19607515 +/- 0.0070 Ecliptic XDOT -0.00117886 +/- 0.0001 Ecliptic YDOT -0.00228467 +/- 0.0001 Ecliptic ZDOT 0.00001474 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.95413893 +/- 0.0241 Geocenter to KBO 42.40530620 +/- 0.0323 # Hcoef: 8.49
The following table shows the complete astrometric record for 17EJ53. 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 (17EJ53) followed by the observatory code and reference code for the source of the astrometry.
2016 12 25.46866 09 49 18.62 -00 07 58.2 25.3r 17EJ53 T09 C~81Bz 2016 12 25.48124 09 49 18.58 -00 07 58.2 25.4r 17EJ53 T09 C~81Bz 2016 12 25.50426 09 49 18.54 -00 07 58.2 25.2r 17EJ53 T09 C~81Bz 2017 01 26.46057 09 47 24.44 -00 04 13.7 24.3z 17EJ53 T09 C~81Bz 2017 01 26.49344 09 47 24.30 -00 04 12.8 24.4z 17EJ53 T09 C~81Bz 2017 01 26.49611 09 47 24.30 -00 04 12.7 24.3z 17EJ53 T09 C~81Bz 2017 01 26.50415 09 47 24.23 -00 04 12.7 24.7z 17EJ53 T09 C~81Bz 2017 01 26.50952 09 47 24.22 -00 04 12.7 24.8z 17EJ53 T09 C~81Bz 2017 03 06.35845 09 44 30.02 +00 10 44.2 24.5i 17EJ53 T09 C~81Bz 2017 03 06.37480 09 44 29.95 +00 10 44.9 24.2i 17EJ53 T09 C~81Bz 2017 03 06.38871 09 44 29.91 +00 10 45.2 24.4i 17EJ53 T09 C~81Bz 2017 03 06.40280 09 44 29.83 +00 10 45.4 24.6i 17EJ53 T09 C~81Bz 2017 03 06.40546 09 44 29.82 +00 10 45.7 24.7i 17EJ53 T09 C~81C0 2017 03 06.42427 09 44 29.75 +00 10 46.2 24.1i 17EJ53 T09 C~81C0
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 0.0000 -0.56 -0.13 -0.21 -0.05
3 0.0001 -1.13 0.15 -0.41 0.10
4 0.0876 -1685.84 0.10 -376.60 -0.26
5 0.0877 -1688.12 0.03 -376.47 0.13
6 0.0877 -1688.15 0.18 -376.38 0.24
7 0.0877 -1689.14 -0.27 -376.74 -0.05
8 0.0877 -1689.28 -0.04 -376.79 -0.06
9 0.1941 -4452.06 -0.04 -430.62 -0.13
10 0.1941 -4453.28 -0.12 -430.33 0.09
11 0.1942 -4453.95 0.19 -430.25 0.11
12 0.1942 -4455.15 -0.02 -430.47 -0.18
13 0.1942 -4455.39 -0.08 -430.24 0.04
14 0.1943 -4456.55 0.08 -430.13 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.
17EJ53 quality flag:2 Type: 8:5EII SCATEXTD SCATEXTD axisobj 41.107 41.994 40.712 ecceobj 0.082 0.064 0.097 incobj 12.360 12.359 12.362 qmin 36.901 38.215 34.682 qmax 45.691 45.980 47.071 amean 41.191 41.985 40.736 amin 40.835 41.654 40.311 amax 41.561 42.323 41.110 emean 0.076 0.068 0.108 emin 0.050 0.052 0.079 emax 0.100 0.087 0.146 imean 14.615 14.024 14.485 imin 13.447 13.315 12.877 imax 15.663 14.785 16.338 excite_mean 0.264 0.252 0.273 fracstop 1.000 1.000 1.000 cjmean 2.987 3.003 2.978 libcent 0 187.8 -180.0 -180.0 libamp 0 164.3 -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 172.9 179.6 180.5 kozaiamp 180.0 180.0 180.0