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: 15FG563 # Created Mon Jul 7 01:10:33 2025 # Orbit generated from Bernstein formalism # Fitting 12 observations of 12 # Arc: 7.07d # First observation: 2015/03/18 # Last observation: 2015/03/25 # WARNING Fitting with energy constraint # WARNING and with gdot fixed = 0 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # Chi-squared of fit: 8.20 DOF: 20 RMS: 0.15 # Min/Max residuals: -0.25 0.38 # Exact a, adot, b, bdot, g, gdot: 1.357874E-05 2.206226E-02 -7.232340E-06 -1.007217E-02 2.451707E-02 0.000000E+00 # Covariance matrix: 4.0641E-11 6.2352E-08 5.9978E-14 -1.8918E-12 9.8962E-09 0.0000E+00 6.2352E-08 9.6209E-05 9.2522E-11 -2.9179E-09 1.5266E-05 0.0000E+00 5.9978E-14 9.2522E-11 2.1396E-13 -1.2715E-11 1.4681E-11 0.0000E+00 -1.8918E-12 -2.9179E-09 -1.2715E-11 1.7672E-09 -4.6302E-10 0.0000E+00 9.8962E-09 1.5266E-05 1.4681E-11 -4.6302E-10 2.4225E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.9392E-04 # lat0 lon0 xBary yBary zBary JD0 -0.368698 179.151922 0.031121 -0.006254 -0.991647 2457099.980898 # Heliocentric elements and errors Epoch: 2457090.5000 = 2015/03/09 Mean Anomaly: 0.64914 +/- 73.049 Argument of Peri: 180.13058 +/- 139.350 Long of Asc Node: 358.31839 +/- 0.352 Inclination: 24.48789 +/- 9.587 Eccentricity: 0.03972606 +/- 0.5677 Semi-Major Axis: 43.51108591 +/- 23.0273 Time of Perihelion: 2456901.4681 +/- 230938.2 Perihelion: 41.78256174 +/- 33.1537 Aphelion: 45.23961008 +/- 34.4010 Period (y) 287.0173 +/- 227.85 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -41.77682169 +/- 2.5890 Ecliptic Y 0.64937379 +/- 0.0385 Ecliptic Z -0.26274617 +/- 0.0167 Ecliptic XDOT -0.00003265 +/- 0.0016 Ecliptic YDOT -0.00246933 +/- 0.0009 Ecliptic ZDOT -0.00112466 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 41.78269442 +/- 2.5886 Geocenter to KBO 40.78790652 +/- 2.5894 # Hcoef: 9.00
The following table shows the complete astrometric record for 15FG563. 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 (15FG563) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.48012 11 56 18.06 -00 00 03.4 24.8r 15FG563 T09 C~8vFZ 2015 03 18.51214 11 56 17.89 -00 00 02.7 24.8r 15FG563 T09 C~8vFZ 2015 03 18.53831 11 56 17.77 -00 00 02.0 25.0r 15FG563 T09 C~8vFZ 2015 03 18.56877 11 56 17.62 -00 00 01.5 25.4r 15FG563 T09 C~8vFZ 2015 03 18.57522 11 56 17.59 -00 00 01.0 25.2r 15FG563 T09 C~8vFZ 2015 03 20.42657 11 56 08.85 +00 00 44.4 24.6i 15FG563 T09 C~8vFZ 2015 03 20.46619 11 56 08.64 +00 00 45.2 25.0i 15FG563 T09 C~8vFZ 2015 03 20.54104 11 56 08.28 +00 00 46.9 25.3i 15FG563 T09 C~8vFZ 2015 03 25.45755 11 55 45.09 +00 02 48.0 25.6g 15FG563 T09 C~8vFZ 2015 03 25.48926 11 55 44.91 +00 02 48.3 25.4g 15FG563 T09 C~8vFZ 2015 03 25.51534 11 55 44.80 +00 02 49.2 25.5g 15FG563 T09 C~8vFZ 2015 03 25.54970 11 55 44.62 +00 02 49.8 25.3g 15FG563 T09 C~8vFZ
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 0.13 0.00 0.15
2 0.0001 -2.62 -0.05 -0.37 -0.02
3 0.0002 -4.55 0.00 -0.45 0.07
4 0.0002 -6.81 0.05 -0.88 -0.18
5 0.0003 -7.42 -0.08 -0.60 0.13
6 0.0053 -145.76 0.08 -11.09 0.15
7 0.0054 -148.97 -0.11 -11.61 -0.12
8 0.0056 -154.60 -0.06 -12.20 -0.25
9 0.0191 -521.92 0.14 -39.44 0.38
10 0.0192 -524.52 -0.06 -40.24 -0.22
11 0.0193 -526.39 0.04 -40.07 0.11
12 0.0194 -529.11 -0.09 -40.59 -0.21
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.
15FG563 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