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: 15FJ564 # Created Sun Oct 19 01:10:51 2025 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 7.00d # First observation: 2015/03/18 # Last observation: 2015/03/25 # WARNING Fitting with energy constraint # WARNING and with gdot fixed = 0 # Chi-squared of fit: 3.84 DOF: 24 RMS: 0.09 # Min/Max residuals: -0.12 0.25 # Exact a, adot, b, bdot, g, gdot: 1.541717E-05 2.230564E-02 -1.138637E-07 -1.332147E-05 2.335633E-02 0.000000E+00 # Covariance matrix: 2.9737E-11 4.3286E-08 5.6459E-14 -3.9202E-12 6.8711E-09 0.0000E+00 4.3286E-08 6.3521E-05 8.2815E-11 -5.7502E-09 1.0079E-05 0.0000E+00 5.6459E-14 8.2815E-11 2.1479E-13 -1.7255E-11 1.3141E-11 0.0000E+00 -3.9202E-12 -5.7502E-09 -1.7255E-11 2.7108E-09 -9.1240E-10 0.0000E+00 6.8711E-09 1.0079E-05 1.3141E-11 -9.1240E-10 1.5992E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.6766E-04 # lat0 lon0 xBary yBary zBary JD0 -0.495093 178.915018 0.026460 -0.008446 -0.991772 2457100.012918 # Heliocentric elements and errors Epoch: 2457100.5000 = 2015/03/19 Mean Anomaly: 2.24305 +/- 153.911 Argument of Peri: 263.91228 +/- 221.441 Long of Asc Node: 272.65079 +/- 15.791 Inclination: 0.48488 +/- 0.009 Eccentricity: 0.01669618 +/- 0.5614 Semi-Major Axis: 44.55314151 +/- 23.0737 Time of Perihelion: 2456423.7134 +/- 589546.5 Perihelion: 43.80927427 +/- 33.7679 Aphelion: 45.29700876 +/- 34.2904 Period (y) 297.3895 +/- 231.02 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -43.79994304 +/- 2.3176 Ecliptic Y 0.85569705 +/- 0.0441 Ecliptic Z -0.36994485 +/- 0.0200 Ecliptic XDOT -0.00005291 +/- 0.0015 Ecliptic YDOT -0.00261999 +/- 0.0008 Ecliptic ZDOT -0.00000147 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.80986289 +/- 2.3171 Geocenter to KBO 42.81495175 +/- 2.3182 # Hcoef: 9.21
The following table shows the complete astrometric record for 15FJ564. 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 (15FJ564) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.51214 11 55 13.83 -00 01 21.7 25.4r 15FJ564 T09 C~90HY 2015 03 18.53831 11 55 13.71 -00 01 21.0 25.3r 15FJ564 T09 C~90HY 2015 03 18.56877 11 55 13.58 -00 01 20.2 25.3r 15FJ564 T09 C~90HY 2015 03 18.57308 11 55 13.58 -00 01 20.2 25.7r 15FJ564 T09 C~90HY 2015 03 20.42657 11 55 05.57 -00 00 28.1 25.5i 15FJ564 T09 C~90HY 2015 03 20.46619 11 55 05.39 -00 00 26.9 25.4i 15FJ564 T09 C~90HY 2015 03 20.50521 11 55 05.22 -00 00 25.7 25.3i 15FJ564 T09 C~90HY 2015 03 20.54104 11 55 05.06 -00 00 24.7 25.0i 15FJ564 T09 C~90HY 2015 03 20.54374 11 55 05.06 -00 00 24.7 24.9i 15FJ564 T09 C~90HY 2015 03 22.48791 11 54 56.66 +00 00 29.8 25.0i 15FJ564 T09 C~90HY 2015 03 22.51564 11 54 56.53 +00 00 30.6 25.0i 15FJ564 T09 C~90HY 2015 03 22.52113 11 54 56.53 +00 00 30.8 25.1i 15FJ564 T09 C~90HY 2015 03 25.45755 11 54 43.87 +00 01 53.1 26.4g 15FJ564 T09 C~90HY 2015 03 25.51534 11 54 43.62 +00 01 54.6 26.7g 15FJ564 T09 C~90HY
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 -0.07 0.00 0.02
2 0.0001 -1.93 -0.12 -0.07 -0.04
3 0.0002 -4.04 -0.05 -0.12 -0.07
4 0.0002 -4.04 0.25 -0.12 -0.07
5 0.0052 -135.00 0.06 -0.10 -0.05
6 0.0053 -137.95 -0.05 -0.07 -0.00
7 0.0055 -140.77 -0.07 0.02 0.10
8 0.0056 -143.37 -0.11 -0.02 0.08
9 0.0056 -143.37 0.09 -0.02 0.08
10 0.0109 -280.65 0.02 -0.13 -0.03
11 0.0110 -282.76 -0.10 -0.17 -0.06
12 0.0110 -282.84 0.21 0.02 0.12
13 0.0190 -489.80 -0.06 0.00 0.01
14 0.0192 -493.84 0.02 -0.11 -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.
15FJ564 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