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: 15FF564
# Created Tue Sep 2 01:10:38 2025
# Orbit generated from Bernstein formalism
# Fitting 10 observations of 10
# Arc: 7.03d
# 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: 3.45 DOF: 16 RMS: 0.10
# Min/Max residuals: -0.23 0.19
# Exact a, adot, b, bdot, g, gdot:
1.229287E-05 2.187219E-02 -1.081368E-05 -2.002850E-02 2.816447E-02 0.000000E+00
# Covariance matrix:
1.0578E-10 1.8560E-07 -2.2495E-13 6.8880E-11 2.9468E-08 0.0000E+00
1.8560E-07 3.2683E-04 -3.9608E-10 1.2128E-07 5.1884E-05 0.0000E+00
-2.2495E-13 -3.9608E-10 3.5505E-13 -2.2444E-11 -6.2877E-11 0.0000E+00
6.8880E-11 1.2128E-07 -2.2444E-11 2.4391E-09 1.9253E-08 0.0000E+00
2.9468E-08 5.1884E-05 -6.2877E-11 1.9253E-08 8.2365E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 2.9399E-04
# lat0 lon0 xBary yBary zBary JD0
0.556360 178.488957 0.019490 0.009759 -0.991917 2457099.989758
# Heliocentric elements and errors
Epoch: 2457090.5000 = 2015/03/09
Mean Anomaly: 1.77802 +/- 56.692
Argument of Peri: 177.27311 +/- 123.294
Long of Asc Node: 359.05050 +/- 0.484
Inclination: 42.40365 +/- 23.532
Eccentricity: 0.02826503 +/- 0.6129
Semi-Major Axis: 37.56190538 +/- 19.9668
Time of Perihelion: 2456675.2087 +/- 265497.2
Perihelion: 36.50021697 +/- 30.1061
Aphelion: 38.62359379 +/- 30.8456
Period (y) 230.2129 +/- 183.56
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -36.48594946 +/- 3.6166
Ecliptic Y 0.98186734 +/- 0.0957
Ecliptic Z 0.34439961 +/- 0.0351
Ecliptic XDOT -0.00007838 +/- 0.0017
Ecliptic YDOT -0.00213071 +/- 0.0015
Ecliptic ZDOT -0.00194678 +/- 0.0002
# Distances at JD0 (AU)
Heliocenter to KBO 36.50078331 +/- 3.6151
Geocenter to KBO 35.50572391 +/- 3.6180
# Hcoef: 9.45
The following table shows the complete astrometric record for 15FF564. 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 (15FF564) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.48898 11 55 20.37 +01 06 41.3 24.5r 15FF564 T09 C~90HY 2015 03 18.54702 11 55 20.04 +01 06 43.0 24.2r 15FF564 T09 C~90HY 2015 03 20.43719 11 55 09.30 +01 07 29.4 24.8i 15FF564 T09 C~90HY 2015 03 20.47173 11 55 09.10 +01 07 30.0 24.8i 15FF564 T09 C~90HY 2015 03 20.51627 11 55 08.86 +01 07 31.4 25.0i 15FF564 T09 C~90HY 2015 03 20.55195 11 55 08.63 +01 07 32.2 24.7i 15FF564 T09 C~90HY 2015 03 25.46334 11 54 40.79 +01 09 32.6 25.7g 15FF564 T09 C~90HY 2015 03 25.46627 11 54 40.76 +01 09 32.6 25.8g 15FF564 T09 C~90HY 2015 03 25.49353 11 54 40.61 +01 09 33.3 25.5g 15FF564 T09 C~90HY 2015 03 25.52385 11 54 40.44 +01 09 33.9 25.3g 15FF564 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 -0.00 0.00 -0.09
2 0.0002 -5.22 -0.04 -0.41 0.19
3 0.0053 -171.45 -0.04 -21.89 0.00
4 0.0054 -174.44 0.06 -22.54 -0.23
5 0.0056 -178.30 0.17 -22.68 0.15
6 0.0056 -181.79 -0.13 -23.32 -0.06
7 0.0191 -612.75 0.05 -78.89 0.11
8 0.0191 -613.16 -0.11 -79.07 -0.04
9 0.0192 -615.51 -0.03 -79.32 0.04
10 0.0193 -618.08 0.08 -79.78 -0.07
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.
15FF564 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