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: 17SN403 # Created Mon Jul 7 01:11:33 2025 # Orbit generated from Bernstein formalism # Fitting 5 observations of 5 # Arc: 32.77d # First observation: 2017/09/16 # Last observation: 2017/10/19 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.159184 -0.000001 -0.037777 0.075061 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # Chi-squared of fit: 0.81 DOF: 5 RMS: 0.07 # Min/Max residuals: -0.11 0.10 # Exact a, adot, b, bdot, g, gdot: 2.715474E-05 1.174374E-01 -8.360222E-06 -3.826746E-02 6.821868E-02 1.021601E-03 # Covariance matrix: 1.4302E-11 5.1786E-08 -9.6995E-13 4.9248E-10 8.6257E-09 -2.4512E-07 5.1786E-08 2.0780E-04 -4.2940E-09 2.2376E-06 3.4284E-05 -1.0599E-03 -9.6995E-13 -4.2940E-09 6.0856E-13 -5.9469E-11 -6.9928E-10 2.4061E-08 4.9248E-10 2.2376E-06 -5.9469E-11 2.9062E-08 3.6321E-07 -1.2817E-05 8.6257E-09 3.4284E-05 -6.9928E-10 3.6321E-07 5.6636E-06 -1.7313E-04 -2.4512E-07 -1.0599E-03 2.4061E-08 -1.2817E-05 -1.7313E-04 5.8166E-03 # lat0 lon0 xBary yBary zBary JD0 -0.484850 -18.070609 -0.208338 -0.008216 -0.985278 2458012.966971 # Heliocentric elements and errors Epoch: 2458010.5000 = 2017/09/14 Mean Anomaly: 2.77986 +/- 80.596 Argument of Peri: 176.03929 +/- 156.032 Long of Asc Node: 161.27774 +/- 0.162 Inclination: 18.06623 +/- 2.298 Eccentricity: 0.29809902 +/- 0.0999 Semi-Major Axis: 22.26623553 +/- 3.6894 Time of Perihelion: 2457714.1610 +/- 8591.4 Perihelion: 15.62869251 +/- 3.4140 Aphelion: 28.90377854 +/- 5.2808 Period (y) 105.0699 +/- 26.11 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 14.93427961 +/- 0.4861 Ecliptic Y -4.65956628 +/- 0.1587 Ecliptic Z -0.12415464 +/- 0.0043 Ecliptic XDOT 0.00149356 +/- 0.0028 Ecliptic YDOT 0.00446637 +/- 0.0013 Ecliptic ZDOT -0.00153621 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 15.64479721 +/- 0.4664 Geocenter to KBO 14.65874139 +/- 0.5114 # Hcoef: 12.17
The following table shows the complete astrometric record for 17SN403. 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 (17SN403) followed by the observatory code and reference code for the source of the astrometry.
2017 09 16.46617 22 54 05.004 -07 32 08.84 24.0r 17SN403 T09 C~8vJV 2017 09 17.46098 22 53 55.122 -07 33 32.08 24.0r 17SN403 T09 C~8vJV 2017 09 17.52317 22 53 54.496 -07 33 37.16 24.0r 17SN403 T09 C~8vJV 2017 10 19.19690 22 49 35.335 -08 11 32.31 24.1r 17SN403 269 C~8vJV 2017 10 19.23689 22 49 35.098 -08 11 34.71 24.1r 17SN403 269 C~8vJV
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 0.01 0.00 -0.11
2 0.0027 -167.59 -0.04 -20.90 0.02
3 0.0029 -178.13 0.02 -22.05 0.10
4 0.0896 -4605.46 0.03 -662.50 0.08
5 0.0897 -4609.62 -0.04 -663.39 -0.08
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.
17SN403 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0