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: 15FT562
# Created Mon Jul 7 01:10:33 2025
# Orbit generated from Bernstein formalism
# Fitting 10 observations of 10
# Arc: 7.08d
# 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: 2.61 DOF: 16 RMS: 0.09
# Min/Max residuals: -0.19 0.21
# Exact a, adot, b, bdot, g, gdot:
1.474602E-05 2.080938E-02 -8.431113E-07 -1.788070E-03 2.229761E-02 0.000000E+00
# Covariance matrix:
2.7334E-11 3.8310E-08 -6.6542E-14 -2.1061E-11 6.0847E-09 0.0000E+00
3.8310E-08 5.4206E-05 -9.4109E-11 -2.9786E-08 8.6054E-06 0.0000E+00
-6.6542E-14 -9.4109E-11 2.3453E-13 -1.6078E-11 -1.4941E-11 0.0000E+00
-2.1061E-11 -2.9786E-08 -1.6078E-11 2.9906E-09 -4.7289E-09 0.0000E+00
6.0847E-09 8.6054E-06 -1.4941E-11 -4.7289E-09 1.3662E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 1.4588E-04
# lat0 lon0 xBary yBary zBary JD0
0.944892 -177.737666 0.085038 0.016430 -0.988365 2457099.972028
# Heliocentric elements and errors
Epoch: 2457090.5000 = 2015/03/09
Mean Anomaly: 359.01445 +/- 307.126
Argument of Peri: 170.30077 +/- 13.724
Long of Asc Node: 12.81822 +/- 3.654
Inclination: 4.98428 +/- 1.688
Eccentricity: 0.02327356 +/- 0.5577
Semi-Major Axis: 46.93151109 +/- 24.3920
Time of Perihelion: 2457411.9932 +/- 452489.5
Perihelion: 45.83924761 +/- 35.3935
Aphelion: 48.02377458 +/- 36.1675
Period (y) 321.5178 +/- 250.66
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -45.80099077 +/- 2.3488
Ecliptic Y -1.72440021 +/- 0.0926
Ecliptic Z 0.73955144 +/- 0.0388
Ecliptic XDOT 0.00009383 +/- 0.0015
Ecliptic YDOT -0.00255904 +/- 0.0008
Ecliptic ZDOT -0.00021943 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.83940715 +/- 2.3468
Geocenter to KBO 44.84785393 +/- 2.3509
# Hcoef: 8.96
The following table shows the complete astrometric record for 15FT562. 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 (15FT562) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.47125 12 09 48.34 -00 01 57.6 25.6r 15FT562 T09 C~8vFZ 2015 03 18.50552 12 09 48.20 -00 01 56.6 25.5r 15FT562 T09 C~8vFZ 2015 03 18.53399 12 09 48.08 -00 01 55.9 25.6r 15FT562 T09 C~8vFZ 2015 03 18.57964 12 09 47.89 -00 01 54.6 25.6r 15FT562 T09 C~8vFZ 2015 03 20.45800 12 09 40.10 -00 01 05.9 24.9i 15FT562 T09 C~8vFZ 2015 03 20.46072 12 09 40.10 -00 01 05.9 25.5i 15FT562 T09 C~8vFZ 2015 03 20.49692 12 09 39.92 -00 01 04.9 24.6i 15FT562 T09 C~8vFZ 2015 03 20.53554 12 09 39.76 -00 01 03.9 25.2i 15FT562 T09 C~8vFZ 2015 03 25.51107 12 09 19.06 +00 01 05.4 25.9g 15FT562 T09 C~8vFZ 2015 03 25.55615 12 09 18.88 +00 01 06.4 26.0g 15FT562 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 0.00 0.00 -0.09
2 0.0001 -2.32 0.02 0.08 0.04
3 0.0002 -4.25 0.04 0.01 0.00
4 0.0003 -7.39 0.02 0.07 0.12
5 0.0054 -133.97 0.02 -1.69 0.02
6 0.0054 -133.97 0.21 -1.69 0.02
7 0.0055 -136.84 -0.19 -1.84 -0.08
8 0.0057 -139.44 -0.14 -1.88 -0.07
9 0.0193 -475.75 -0.09 -6.64 0.06
10 0.0194 -478.63 0.12 -6.80 -0.03
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.
15FT562 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