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: 15FL562
# Created Thu Jul 3 01:10:30 2025
# Orbit generated from Bernstein formalism
# Fitting 17 observations of 17
# Arc: 10.87d
# First observation: 2015/03/18
# Last observation: 2015/03/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000002 0.033911 -0.000000 0.000653 0.025365 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 10.36 DOF: 29 RMS: 0.14
# Min/Max residuals: -0.27 0.49
# Exact a, adot, b, bdot, g, gdot:
1.261802E-05 2.228014E-02 -1.338690E-08 6.520306E-04 2.351417E-02 -5.308481E-03
# Covariance matrix:
3.8796E-11 5.6034E-08 -3.8772E-14 3.0459E-12 8.9392E-09 6.2841E-08
5.6034E-08 8.1344E-05 -5.6143E-11 4.3558E-09 1.2973E-05 8.7533E-05
-3.8772E-14 -5.6143E-11 1.6264E-13 -7.4037E-12 -8.9596E-12 -7.0656E-11
3.0459E-12 4.3558E-09 -7.4037E-12 7.1902E-10 6.9747E-10 9.7096E-09
8.9392E-09 1.2973E-05 -8.9596E-12 6.9747E-10 2.0691E-06 1.4117E-05
6.2841E-08 8.7533E-05 -7.0656E-11 9.7096E-09 1.4117E-05 3.7788E-04
# lat0 lon0 xBary yBary zBary JD0
0.456776 -178.834738 0.066045 0.008020 -0.989920 2457099.974968
# Heliocentric elements and errors
Epoch: 2457090.5000 = 2015/03/09
Mean Anomaly: 295.53894 +/- 92.929
Argument of Peri: 106.33791 +/- 143.019
Long of Asc Node: 166.14153 +/- 5.741
Inclination: 1.73129 +/- 0.652
Eccentricity: 0.23658498 +/- 0.8469
Semi-Major Axis: 45.83557266 +/- 24.1363
Time of Perihelion: 2477385.8890 +/- 24476.0
Perihelion: 34.99156470 +/- 42.9709
Aphelion: 56.67958061 +/- 48.9674
Period (y) 310.3217 +/- 245.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.51159899 +/- 2.6009
Ecliptic Y -0.81902612 +/- 0.0527
Ecliptic Z 0.33905146 +/- 0.0207
Ecliptic XDOT 0.00066788 +/- 0.0023
Ecliptic YDOT -0.00258682 +/- 0.0009
Ecliptic ZDOT 0.00007108 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.52062737 +/- 2.6004
Geocenter to KBO 42.52754066 +/- 2.6015
# Hcoef: 8.21
The following table shows the complete astrometric record for 15FL562. 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 (15FL562) followed by the observatory code and reference code for the source of the astrometry.
2015 03 18.47419 12 05 00.19 -00 02 39.8 24.6r 15FL562 T09 C~8vFY 2015 03 18.50772 12 04 59.99 -00 02 38.9 24.1r 15FL562 T09 C~8vFY 2015 03 18.53399 12 04 59.89 -00 02 37.9 24.2r 15FL562 T09 C~8vFY 2015 03 18.53616 12 04 59.87 -00 02 37.9 24.9r 15FL562 T09 C~8vFY 2015 03 18.56444 12 04 59.75 -00 02 37.1 24.0r 15FL562 T09 C~8vFY 2015 03 18.57737 12 04 59.71 -00 02 36.6 24.5r 15FL562 T09 C~8vFY 2015 03 20.46072 12 04 51.55 -00 01 42.7 23.8i 15FL562 T09 C~8vFY 2015 03 20.53554 12 04 51.22 -00 01 40.6 24.1i 15FL562 T09 C~8vFY 2015 03 20.53830 12 04 51.21 -00 01 40.5 24.3i 15FL562 T09 C~8vFY 2015 03 22.47399 12 04 42.80 -00 00 45.2 24.6i 15FL562 T09 C~8vFY 2015 03 22.51021 12 04 42.65 -00 00 44.2 24.0i 15FL562 T09 C~8vFY 2015 03 25.45174 12 04 29.87 +00 00 40.0 26.1g 15FL562 T09 C~8vFY 2015 03 25.51323 12 04 29.60 +00 00 41.7 25.7g 15FL562 T09 C~8vFY 2015 03 25.55400 12 04 29.42 +00 00 42.9 25.7g 15FL562 T09 C~8vFY 2015 03 29.27727 12 04 13.36 +00 02 29.0 23.7y 15FL562 T09 C~8vFY 2015 03 29.31534 12 04 13.20 +00 02 30.0 23.7y 15FL562 T09 C~8vFY 2015 03 29.34265 12 04 13.07 +00 02 30.7 23.5y 15FL562 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 0.49 0.00 0.09
2 0.0001 -3.11 -0.21 -0.37 -0.27
3 0.0002 -4.88 -0.09 -0.05 0.05
4 0.0002 -5.16 -0.21 -0.17 -0.07
5 0.0002 -7.13 -0.15 -0.15 -0.05
6 0.0003 -7.88 0.03 0.07 0.17
7 0.0054 -141.62 0.01 0.85 0.13
8 0.0056 -147.00 0.04 0.81 0.09
9 0.0057 -147.17 0.06 0.84 0.13
10 0.0110 -284.91 -0.00 1.41 -0.07
11 0.0111 -287.37 0.15 1.43 -0.05
12 0.0191 -496.75 -0.09 2.45 -0.10
13 0.0193 -501.14 -0.05 2.40 -0.14
14 0.0194 -504.09 -0.07 2.42 -0.11
15 0.0296 -767.32 -0.02 3.97 0.13
16 0.0297 -769.92 0.09 3.93 0.10
17 0.0298 -771.99 -0.02 3.80 -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.