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: 15FC562 # Created Mon Jul 7 01:10:33 2025 # Orbit generated from Bernstein formalism # Fitting 23 observations of 23 # Arc: 63.90d # First observation: 2015/03/18 # Last observation: 2015/05/21 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.022837 0.000001 -0.002908 0.022751 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 23.11 DOF: 41 RMS: 0.18 # Min/Max residuals: -0.52 0.67 # Exact a, adot, b, bdot, g, gdot: 1.601405E-05 2.163333E-02 -1.146460E-06 -2.598117E-03 2.270773E-02 3.467001E-03 # Covariance matrix: 1.6147E-13 5.7537E-13 -2.4818E-15 4.9956E-14 3.2092E-12 1.0074E-09 5.7537E-13 1.3657E-08 2.5076E-12 -3.4126E-09 1.2337E-09 -1.0212E-06 -2.4818E-15 2.5076E-12 1.3547E-13 -1.4734E-12 -9.0505E-14 -3.0186E-10 4.9956E-14 -3.4126E-09 -1.4734E-12 8.6853E-10 -2.6265E-10 2.7187E-07 3.2092E-12 1.2337E-09 -9.0505E-14 -2.6265E-10 4.6914E-10 3.6470E-08 1.0074E-09 -1.0212E-06 -3.0186E-10 2.7187E-07 3.6470E-08 1.2280E-04 # lat0 lon0 xBary yBary zBary JD0 -8.914353 151.593634 -0.429837 -0.138426 -0.883403 2457099.894868 # Heliocentric elements and errors Epoch: 2457090.5000 = 2015/03/09 Mean Anomaly: 54.77702 +/- 16.010 Argument of Peri: 158.24882 +/- 51.337 Long of Asc Node: 280.21031 +/- 0.374 Inclination: 11.04404 +/- 0.055 Eccentricity: 0.18355500 +/- 0.5064 Semi-Major Axis: 48.81510738 +/- 8.4873 Time of Perihelion: 2438135.4163 +/- 2501.0 Perihelion: 39.85485059 +/- 25.6723 Aphelion: 57.77536418 +/- 26.6825 Period (y) 341.0669 +/- 88.95 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -39.26209536 +/- 0.0365 Ecliptic Y 20.74384192 +/- 0.0197 Ecliptic Z -6.82405729 +/- 0.0065 Ecliptic XDOT -0.00156479 +/- 0.0012 Ecliptic YDOT -0.00212667 +/- 0.0006 Ecliptic ZDOT -0.00037415 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 44.92646067 +/- 0.0332 Geocenter to KBO 44.03787247 +/- 0.0420 # Hcoef: 8.24
The following table shows the complete astrometric record for 15FC562. 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 (15FC562) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.39409 10 01 45.71 +02 33 58.5 24.7r 15FC562 T09 C~8vFX 2015 03 18.40452 10 01 45.69 +02 33 58.8 24.5r 15FC562 T09 C~8vFX 2015 03 18.41419 10 01 45.64 +02 33 58.8 24.5r 15FC562 T09 C~8vFX 2015 03 18.42254 10 01 45.62 +02 33 59.2 24.5r 15FC562 T09 C~8vFX 2015 03 18.42649 10 01 45.60 +02 33 59.5 24.5r 15FC562 T09 C~8vFX 2015 03 18.43231 10 01 45.58 +02 33 59.5 24.5r 15FC562 T09 C~8vFX 2015 03 18.44463 10 01 45.53 +02 33 59.9 24.6r 15FC562 T09 C~8vFX 2015 03 18.45045 10 01 45.51 +02 34 00.2 24.5r 15FC562 T09 C~8vFX 2015 03 20.34188 10 01 38.53 +02 34 47.2 24.1i 15FC562 T09 C~8vFX 2015 03 20.35776 10 01 38.47 +02 34 47.6 24.2i 15FC562 T09 C~8vFX 2015 03 20.37237 10 01 38.41 +02 34 47.9 24.3i 15FC562 T09 C~8vFX 2015 05 17.25906 09 59 56.58 +02 52 42.6 25.8g 15FC562 T09 C~8vFX 2015 05 17.26292 09 59 56.58 +02 52 42.8 25.9g 15FC562 T09 C~8vFX 2015 05 17.26621 09 59 56.60 +02 52 42.6 25.7g 15FC562 T09 C~8vFX 2015 05 17.27711 09 59 56.58 +02 52 43.0 25.7g 15FC562 T09 C~8vFX 2015 05 17.28396 09 59 56.60 +02 52 43.0 25.7g 15FC562 T09 C~8vFX 2015 05 17.28721 09 59 56.58 +02 52 43.3 25.3g 15FC562 T09 C~8vFX 2015 05 17.30505 09 59 56.58 +02 52 44.0 25.9g 15FC562 T09 C~8vFX 2015 05 21.25350 09 59 59.20 +02 53 12.7 24.5i 15FC562 T09 C~8vFX 2015 05 21.25735 09 59 59.20 +02 53 12.5 24.4i 15FC562 T09 C~8vFX 2015 05 21.26121 09 59 59.20 +02 53 12.7 24.7i 15FC562 T09 C~8vFX 2015 05 21.28433 09 59 59.22 +02 53 12.7 24.1i 15FC562 T09 C~8vFX 2015 05 21.29589 09 59 59.23 +02 53 12.7 24.6i 15FC562 T09 C~8vFY
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 -0.20 0.00 -0.14
2 0.0000 -0.39 0.07 0.18 0.00
3 0.0001 -1.09 -0.03 -0.09 -0.29
4 0.0001 -1.51 0.07 0.18 -0.05
5 0.0001 -1.89 -0.07 0.36 0.11
6 0.0001 -2.17 0.01 0.25 -0.01
7 0.0001 -3.02 -0.06 0.37 0.06
8 0.0002 -3.40 -0.09 0.54 0.22
9 0.0053 -117.83 0.13 7.93 0.05
10 0.0054 -118.82 0.12 7.99 0.05
11 0.0054 -119.76 0.06 7.96 -0.04
12 0.1639 -1925.21 0.10 480.60 -0.18
13 0.1639 -1925.28 0.02 480.79 -0.03
14 0.1639 -1924.92 0.36 480.71 -0.15
15 0.1640 -1925.35 -0.09 480.98 0.01
16 0.1640 -1925.06 0.17 481.08 0.05
17 0.1640 -1925.45 -0.22 481.26 0.19
18 0.1640 -1925.70 -0.52 481.92 0.67
19 0.1748 -1898.97 0.02 522.54 0.05
20 0.1748 -1898.90 0.06 522.35 -0.17
21 0.1749 -1898.97 -0.05 522.54 -0.03
22 0.1749 -1898.69 0.04 522.64 -0.15
23 0.1750 -1898.54 0.08 522.69 -0.22
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.
15FC562 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