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: 17CN54 # Created Wed May 8 01:18:06 2024 # Orbit generated from Bernstein formalism # Fitting 15 observations of 15 # Arc: 90.78d # First observation: 2017/01/26 # Last observation: 2017/04/27 Preliminary a, adot, b, bdot, g, gdot: -0.000013 0.031566 0.000023 0.002886 0.025328 0.000000 # Chi-squared of fit: 6.68 DOF: 24 RMS: 0.12 # Min/Max residuals: -0.24 0.29 # Exact a, adot, b, bdot, g, gdot: 1.674692E-05 2.461531E-02 2.358679E-06 3.478688E-03 2.424460E-02 -1.301129E-03 # Covariance matrix: 2.4071E-13 -3.6659E-12 -9.1306E-15 3.8500E-13 1.6753E-13 1.4001E-10 -3.6659E-12 5.1306E-09 1.6343E-11 -4.5501E-10 7.1250E-10 -5.1042E-08 -9.1306E-15 1.6343E-11 2.3073E-13 -2.3338E-12 2.2717E-12 -1.6335E-10 3.8500E-13 -4.5501E-10 -2.3338E-12 5.0421E-11 -6.2048E-11 4.7898E-09 1.6753E-13 7.1250E-10 2.2717E-12 -6.2048E-11 1.0421E-10 -6.0740E-09 1.4001E-10 -5.1042E-08 -1.6335E-10 4.7898E-09 -6.0740E-09 7.1658E-07 # lat0 lon0 xBary yBary zBary JD0 -11.898127 151.336439 0.418007 -0.183958 -0.873923 2457780.057001 # Heliocentric elements and errors Epoch: 2457780.5000 = 2017/01/27 Mean Anomaly: 337.60658 +/- 8.938 Argument of Peri: 333.57085 +/- 12.535 Long of Asc Node: 206.23205 +/- 0.100 Inclination: 14.04726 +/- 0.016 Eccentricity: 0.14310091 +/- 0.0223 Semi-Major Axis: 48.34184635 +/- 0.4722 Time of Perihelion: 2465417.1219 +/- 3046.0 Perihelion: 41.42408395 +/- 1.1535 Aphelion: 55.25960874 +/- 1.2076 Period (y) 336.1190 +/- 4.92 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -36.00086537 +/- 0.0149 Ecliptic Y 20.14983069 +/- 0.0082 Ecliptic Z -8.50376396 +/- 0.0036 Ecliptic XDOT -0.00127538 +/- 0.0001 Ecliptic YDOT -0.00247588 +/- 0.0001 Ecliptic ZDOT 0.00041463 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.12353245 +/- 0.0133 Geocenter to KBO 41.24630318 +/- 0.0174 # Hcoef: 8.75
The following table shows the complete astrometric record for 17CN54. 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 (17CN54) followed by the observatory code and reference code for the source of the astrometry.
2017 01 26.55620 09 56 38.41 -00 08 27.1 24.7z 17CN54 T09 C~7xTt 2017 01 26.56693 09 56 38.39 -00 08 27.1 25.2z 17CN54 T09 C~7xTt 2017 01 26.58570 09 56 38.30 -00 08 26.6 25.5z 17CN54 T09 C~7xTt 2017 01 26.60996 09 56 38.20 -00 08 26.3 25.2z 17CN54 T09 C~7xTt 2017 02 02.39743 09 56 08.94 -00 06 16.8 24.9r 17CN54 T09 C~7xTt 2017 02 02.41063 09 56 08.87 -00 06 16.4 24.9r 17CN54 T09 C~7xTt 2017 02 02.42609 09 56 08.80 -00 06 16.1 24.6r 17CN54 T09 C~7xTt 2017 02 02.56306 09 56 08.20 -00 06 13.3 24.6i 17CN54 T09 C~7xTt 2017 03 06.37764 09 53 45.93 +00 07 43.8 24.5i 17CN54 T09 C~7xTt 2017 03 06.44451 09 53 45.65 +00 07 45.8 24.4i 17CN54 T09 C~7xTt 2017 03 06.46066 09 53 45.59 +00 07 46.3 24.3i 17CN54 T09 C~7xTt 2017 04 27.32671 09 51 21.01 +00 32 54.7 24.6i 17CN54 T09 C~7xTt 2017 04 27.33527 09 51 21.00 +00 32 55.0 25.0i 17CN54 T09 C~7xTt 2017 04 27.33816 09 51 21.00 +00 32 55.2 24.6i 17CN54 T09 C~7xTt 2017 04 27.34103 09 51 21.01 +00 32 55.0 25.2i 17CN54 T09 C~7xTt
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 -0.14 0.00 -0.02
2 0.0000 -0.28 0.29 -0.10 -0.06
3 0.0001 -1.72 0.09 -0.11 0.05
4 0.0001 -3.23 0.18 -0.35 -0.04
5 0.0187 -459.73 -0.04 -32.18 -0.00
6 0.0188 -460.85 -0.24 -32.18 0.06
7 0.0188 -461.94 -0.24 -32.26 0.04
8 0.0192 -471.35 -0.02 -32.78 0.08
9 0.1063 -2763.53 -0.09 6.81 -0.10
10 0.1065 -2768.17 0.05 7.22 -0.08
11 0.1065 -2769.18 0.18 7.38 -0.01
12 0.2485 -5328.95 -0.02 664.25 -0.07
13 0.2485 -5329.19 -0.08 664.48 0.01
14 0.2485 -5329.26 -0.09 664.67 0.15
15 0.2486 -5329.05 0.18 664.53 -0.03
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.
17CN54 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 48.085 49.631 47.388 ecceobj 0.136 0.206 0.111 incobj 14.077 14.034 14.126 qmin 40.604 38.431 41.387 qmax 56.063 61.591 53.766 amean 48.105 49.707 47.405 amin 47.660 49.263 47.006 amax 48.565 50.244 47.844 emean 0.138 0.211 0.109 emin 0.121 0.199 0.097 emax 0.154 0.226 0.124 imean 14.487 14.317 14.631 imin 14.105 13.892 14.349 imax 14.842 14.709 14.941 excite_mean 0.286 0.325 0.275 fracstop 1.000 1.000 1.000 cjmean 3.050 3.039 3.048 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 175.7 174.9 172.2 kozaiamp 180.0 179.9 180.0