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: 15FN485 # Created Fri Jan 24 02:10:44 2025 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 64.79d # First observation: 2015/03/22 # Last observation: 2015/05/26 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.037729 -0.000000 0.014238 0.029621 0.000000 # Chi-squared of fit: 3.30 DOF: 22 RMS: 0.09 # Min/Max residuals: -0.19 0.15 # Exact a, adot, b, bdot, g, gdot: 1.731787E-05 3.119704E-02 7.811697E-06 1.436336E-02 2.845934E-02 3.468886E-03 # Covariance matrix: 4.6487E-13 4.8501E-10 -2.1218E-14 -1.5965E-11 7.6456E-11 -1.3832E-09 4.8501E-10 9.2530E-07 -4.0463E-11 -3.0998E-08 1.4455E-07 -2.8679E-06 -2.1218E-14 -4.0463E-11 2.1052E-13 1.7061E-13 -6.2858E-12 1.3428E-10 -1.5965E-11 -3.0998E-08 1.7061E-13 1.2214E-09 -4.5843E-09 1.6063E-07 7.6456E-11 1.4455E-07 -6.2858E-12 -4.5843E-09 2.2978E-08 -3.4928E-07 -1.3832E-09 -2.8679E-06 1.3428E-10 1.6063E-07 -3.4928E-07 3.3559E-05 # lat0 lon0 xBary yBary zBary JD0 13.450600 -142.356128 0.587310 0.186446 -0.779062 2457104.034268 # Heliocentric elements and errors Epoch: 2457100.5000 = 2015/03/19 Mean Anomaly: 8.63738 +/- 15.728 Argument of Peri: 10.04588 +/- 36.036 Long of Asc Node: 190.55942 +/- 0.733 Inclination: 27.95587 +/- 0.618 Eccentricity: 0.35001246 +/- 0.0665 Semi-Major Axis: 54.48964754 +/- 3.3827 Time of Perihelion: 2453575.5826 +/- 6410.2 Perihelion: 35.41759169 +/- 4.2391 Aphelion: 73.56170339 +/- 5.8301 Period (y) 402.2344 +/- 37.46 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -28.05548811 +/- 0.1441 Ecliptic Y -20.89609482 +/- 0.1112 Ecliptic Z 8.17360190 +/- 0.0435 Ecliptic XDOT 0.00182713 +/- 0.0005 Ecliptic YDOT -0.00238416 +/- 0.0003 Ecliptic ZDOT 0.00142160 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 35.92443402 +/- 0.1302 Geocenter to KBO 35.13785391 +/- 0.1872 # Hcoef: 8.83
The following table shows the complete astrometric record for 15FN485. 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 (15FN485) followed by the observatory code and reference code for the source of the astrometry.
2015 03 22.53349 14 38 28.50 -01 18 37.0 24.6i 15FN485 T09 C~8SVZ 2015 03 22.56243 14 38 28.40 -01 18 35.8 24.1i 15FN485 T09 C~8SVZ 2015 03 22.57349 14 38 28.35 -01 18 35.3 24.2i 15FN485 T09 C~8SVZ 2015 03 22.58749 14 38 28.30 -01 18 35.0 24.5i 15FN485 T09 C~8SVZ 2015 03 22.60129 14 38 28.25 -01 18 34.1 24.0i 15FN485 T09 C~8SVZ 2015 03 22.61524 14 38 28.21 -01 18 33.8 24.9i 15FN485 T09 C~8SVZ 2015 03 22.62888 14 38 28.15 -01 18 33.1 24.6i 15FN485 T09 C~8SVZ 2015 05 23.40856 14 33 38.17 -00 42 46.8 24.4z 15FN485 T09 C~8SVZ 2015 05 23.42419 14 33 38.11 -00 42 46.4 24.5z 15FN485 T09 C~8SVZ 2015 05 23.44195 14 33 38.01 -00 42 46.1 23.6z 15FN485 T09 C~8SVZ 2015 05 23.46266 14 33 37.91 -00 42 45.6 23.7z 15FN485 T09 C~8SVZ 2015 05 26.27538 14 33 25.03 -00 41 46.8 23.5y 15FN485 T09 C~8SVZ 2015 05 26.30780 14 33 24.88 -00 41 46.0 23.6y 15FN485 T09 C~8SVZ 2015 05 26.32544 14 33 24.80 -00 41 45.5 24.2y 15FN485 T09 C~8SVZ
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 0.03
2 0.0001 -1.80 0.07 0.67 0.07
3 0.0001 -2.67 -0.09 0.90 0.06
4 0.0001 -3.48 0.01 0.95 -0.19
5 0.0002 -4.47 -0.09 1.57 0.12
6 0.0002 -5.14 0.14 1.67 -0.09
7 0.0003 -6.21 -0.05 2.05 -0.01
8 0.1694 -4810.96 -0.03 668.03 -0.02
9 0.1694 -4811.94 0.15 668.12 0.10
10 0.1695 -4813.46 -0.04 667.93 -0.06
11 0.1696 -4815.04 -0.09 667.94 -0.02
12 0.1773 -5017.03 0.04 662.81 -0.14
13 0.1773 -5019.41 -0.01 662.86 -0.00
14 0.1774 -5020.71 -0.03 662.95 0.14
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.
15FN485 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