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: 23PH5 # Created Mon Apr 28 01:11:33 2025 # Orbit generated from Bernstein formalism # Fitting 6 observations of 6 # Arc: 54.73d # First observation: 2023/08/13 # Last observation: 2023/10/07 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.036906 0.000005 0.008851 0.028873 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 2.33 DOF: 7 RMS: 0.11 # Min/Max residuals: -0.18 0.18 # Exact a, adot, b, bdot, g, gdot: 1.880093E-05 3.394894E-02 5.663681E-06 9.264241E-03 2.845111E-02 7.079911E-03 # Covariance matrix: 7.5284E-13 1.8787E-11 1.5516E-14 -2.3734E-12 5.0041E-12 -5.8942E-10 1.8787E-11 2.4157E-08 3.1362E-11 -3.6177E-09 2.9669E-09 -1.3526E-06 1.5516E-14 3.1362E-11 6.9662E-13 -1.0165E-11 3.4411E-12 -1.9169E-09 -2.3734E-12 -3.6177E-09 -1.0165E-11 6.3035E-10 -4.1259E-10 2.1533E-07 5.0041E-12 2.9669E-09 3.4411E-12 -4.1259E-10 4.2039E-10 -1.4627E-07 -5.8942E-10 -1.3526E-06 -1.9169E-09 2.1533E-07 -1.4627E-07 8.3466E-05 # lat0 lon0 xBary yBary zBary JD0 -2.705772 -66.045217 -0.435945 -0.043173 -0.907784 2460169.789891 # Heliocentric elements and errors Epoch: 2460160.5000 = 2023/08/04 Mean Anomaly: 11.58138 +/- 9.799 Argument of Peri: 313.14982 +/- 34.884 Long of Asc Node: 304.20010 +/- 0.087 Inclination: 15.53368 +/- 0.133 Eccentricity: 0.48873462 +/- 0.2027 Semi-Major Axis: 65.87919928 +/- 16.3660 Time of Perihelion: 2453877.3317 +/- 4773.0 Perihelion: 33.68175383 +/- 15.7597 Aphelion: 98.07664473 +/- 27.7847 Period (y) 534.7252 +/- 199.26 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 15.03128216 +/- 0.0103 Ecliptic Y -32.73620767 +/- 0.0231 Ecliptic Z -1.65897938 +/- 0.0012 Ecliptic XDOT 0.00327552 +/- 0.0003 Ecliptic YDOT 0.00067419 +/- 0.0008 Ecliptic ZDOT 0.00085835 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.06037920 +/- 0.0214 Geocenter to KBO 35.14800856 +/- 0.0253 # Hcoef: 7.41
The following table shows the complete astrometric record for 23PH5. 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 (23PH5) followed by the observatory code and reference code for the source of the astrometry.
2023 08 13.28909 19 45 24.343 -23 58 48.84 22.8r 23PH5 T09 C~8nlW 2023 08 13.42757 19 45 23.616 -23 58 49.39 22.8r 23PH5 T09 C~8nlW 2023 09 14.01008 19 43 18.988 -23 59 27.27 23.3r 23PH5 269 C~8nlW 2023 09 15.01399 19 43 16.478 -23 59 24.21 23.1r 23PH5 269 C~8nlW 2023 10 06.02969 19 42 50.206 -23 57 08.55 23.0r 23PH5 269 C~8nlW 2023 10 07.02097 19 42 50.242 -23 56 58.91 22.9r 23PH5 269 C~8nlW
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 0.0004 -9.90 -0.02 1.22 0.06
3 0.0868 -1698.22 0.18 262.70 0.11
4 0.0896 -1731.58 -0.18 271.67 -0.00
5 0.1471 -2062.87 -0.06 467.48 -0.04
6 0.1498 -2060.72 0.07 476.89 -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.
23PH5 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