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: 17EO53 # Created Mon Apr 28 01:11:08 2025 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 70.95d # First observation: 2016/12/25 # Last observation: 2017/03/06 Preliminary a, adot, b, bdot, g, gdot: 0.000001 0.031077 0.000000 0.012562 0.028499 0.000000 # Chi-squared of fit: 6.01 DOF: 20 RMS: 0.12 # Min/Max residuals: -0.23 0.24 # Exact a, adot, b, bdot, g, gdot: 1.716536E-05 3.009350E-02 5.812605E-06 1.238300E-02 2.808179E-02 -2.510348E-04 # Covariance matrix: 2.9451E-13 3.4683E-12 1.3596E-14 7.4277E-13 1.7484E-12 1.9805E-10 3.4683E-12 1.1266E-08 2.4269E-11 1.0126E-09 2.4729E-09 1.1223E-07 1.3596E-14 2.4269E-11 2.9500E-13 6.9564E-13 5.3730E-12 2.5067E-10 7.4277E-13 1.0126E-09 6.9564E-13 1.1024E-10 2.2650E-10 1.0982E-08 1.7484E-12 2.4729E-09 5.3730E-12 2.2650E-10 5.5225E-10 2.6623E-08 1.9805E-10 1.1223E-07 2.5067E-10 1.0982E-08 2.6623E-08 1.5618E-06 # lat0 lon0 xBary yBary zBary JD0 -11.711550 148.664684 0.808861 -0.114695 -0.554257 2457747.961099 # Heliocentric elements and errors Epoch: 2457740.5000 = 2016/12/18 Mean Anomaly: 354.74479 +/- 6.948 Argument of Peri: 340.18688 +/- 11.637 Long of Asc Node: 173.60481 +/- 0.087 Inclination: 24.76195 +/- 0.069 Eccentricity: 0.23510456 +/- 0.0032 Semi-Major Axis: 47.19022470 +/- 0.2094 Time of Perihelion: 2459468.9791 +/- 2285.2 Perihelion: 36.09558747 +/- 0.2199 Aphelion: 58.28486194 +/- 0.2994 Period (y) 324.1800 +/- 2.16 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.84944689 +/- 0.0249 Ecliptic Y 19.11426940 +/- 0.0152 Ecliptic Z -7.22817798 +/- 0.0061 Ecliptic XDOT -0.00171209 +/- 0.0001 Ecliptic YDOT -0.00239776 +/- 0.0001 Ecliptic ZDOT 0.00118707 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.17445689 +/- 0.0221 Geocenter to KBO 35.61026762 +/- 0.0298 # Hcoef: 9.43
The following table shows the complete astrometric record for 17EO53. 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 (17EO53) followed by the observatory code and reference code for the source of the astrometry.
2016 12 25.46031 09 47 04.57 +00 56 06.6 25.2r 17EO53 T09 C~83F6 2016 12 25.46657 09 47 04.56 +00 56 06.4 25.1r 17EO53 T09 C~83F6 2016 12 25.47284 09 47 04.53 +00 56 06.4 25.2r 17EO53 T09 C~83F6 2016 12 25.48541 09 47 04.50 +00 56 06.4 25.6r 17EO53 T09 C~83F6 2016 12 25.49797 09 47 04.44 +00 56 06.4 25.1r 17EO53 T09 C~83F6 2017 01 26.46395 09 44 56.63 +01 04 24.1 24.7z 17EO53 T09 C~83F6 2017 01 26.48003 09 44 56.57 +01 04 24.6 25.2z 17EO53 T09 C~83F6 2017 01 26.49611 09 44 56.47 +01 04 25.1 24.1z 17EO53 T09 C~83F6 2017 01 26.51220 09 44 56.38 +01 04 25.4 24.9z 17EO53 T09 C~83F6 2017 03 06.36563 09 41 40.15 +01 26 12.8 24.6i 17EO53 T09 C~83F6 2017 03 06.38040 09 41 40.07 +01 26 13.4 24.7i 17EO53 T09 C~83F6 2017 03 06.39443 09 41 39.99 +01 26 14.0 24.4i 17EO53 T09 C~83F6 2017 03 06.40818 09 41 39.94 +01 26 14.5 24.6i 17EO53 T09 C~83F6
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 -0.05 0.00 0.24
2 0.0000 -0.07 0.15 -0.24 0.06
3 0.0000 -0.50 -0.01 -0.39 -0.03
4 0.0001 -0.92 0.11 -0.54 -0.05
5 0.0001 -1.77 -0.20 -0.85 -0.23
6 0.0876 -1973.76 -0.01 -183.96 -0.09
7 0.0877 -1974.77 0.24 -183.80 0.09
8 0.0877 -1976.35 -0.07 -183.84 0.08
9 0.0878 -1977.73 -0.17 -184.02 -0.08
10 0.1941 -5190.58 0.14 46.69 0.01
11 0.1942 -5191.91 0.01 46.85 -0.01
12 0.1942 -5193.25 -0.19 47.01 -0.03
13 0.1942 -5194.12 0.04 47.23 0.02
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.
17EO53 quality flag:2 Type: SCATNEAR SCATNEAR SCATEXTD axisobj 47.051 49.615 45.930 ecceobj 0.231 0.285 0.225 incobj 24.831 24.616 25.048 qmin 34.849 34.443 33.862 qmax 59.751 65.103 58.437 amean 46.976 49.459 45.875 amin 46.560 48.970 45.466 amax 47.510 50.044 46.364 emean 0.238 0.282 0.239 emin 0.221 0.264 0.218 emax 0.258 0.301 0.260 imean 24.089 24.118 24.135 imin 23.525 23.443 23.412 imax 24.621 24.682 24.836 excite_mean 0.473 0.496 0.474 fracstop 1.000 1.000 1.000 cjmean 2.856 2.853 2.845 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 170.7 173.5 177.3 kozaiamp 179.9 180.0 179.9