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: 15FH401
# Created Tue Jun 17 01:10:28 2025
# Orbit generated from Bernstein formalism
# Fitting 9 observations of 9
# Arc: 5.11d
# First observation: 2015/03/20
# Last observation: 2015/03/25
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit: 0.22 DOF: 14 RMS: 0.03
# Min/Max residuals: -0.09 0.04
# Exact a, adot, b, bdot, g, gdot:
1.566337E-05 2.487848E-02 -2.443822E-07 -3.722590E-04 2.502767E-02 0.000000E+00
# Covariance matrix:
3.2475E-11 5.0729E-08 5.6895E-14 2.6217E-11 8.0550E-09 0.0000E+00
5.0729E-08 7.9986E-05 8.9669E-11 4.1319E-08 1.2695E-05 0.0000E+00
5.6895E-14 8.9669E-11 2.7461E-13 -1.9714E-11 1.4233E-11 0.0000E+00
2.6217E-11 4.1319E-08 -1.9714E-11 3.5303E-09 6.5584E-09 0.0000E+00
8.0550E-09 1.2695E-05 1.4233E-11 6.5584E-09 2.0150E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 2.0629E-04
# lat0 lon0 xBary yBary zBary JD0
0.837958 179.260271 -0.000796 0.014647 -0.992600 2457101.937958
# Heliocentric elements and errors
Epoch: 2457100.5000 = 2015/03/19
Mean Anomaly: 2.33688 +/- 358.545
Argument of Peri: 133.77816 +/- 65.060
Long of Asc Node: 42.99112 +/- 11.534
Inclination: 1.18268 +/- 0.250
Eccentricity: 0.02967451 +/- 0.5651
Semi-Major Axis: 42.20275763 +/- 22.2385
Time of Perihelion: 2456450.4546 +/- 300016.3
Perihelion: 40.95041164 +/- 32.1615
Aphelion: 43.45510361 +/- 33.0615
Period (y) 274.1697 +/- 216.71
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -40.94395421 +/- 2.2658
Ecliptic Y 0.52760587 +/- 0.0294
Ecliptic Z 0.58434293 +/- 0.0331
Ecliptic XDOT -0.00003913 +/- 0.0016
Ecliptic YDOT -0.00272708 +/- 0.0008
Ecliptic ZDOT -0.00004063 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.95152269 +/- 2.2653
Geocenter to KBO 39.95578239 +/- 2.2662
# Hcoef: 8.07
The following table shows the complete astrometric record for 15FH401. 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 (15FH401) followed by the observatory code and reference code for the source of the astrometry.
2015 03 20.437180 11 58 37.116 +01 03 46.99 23.8i 15FH401 568 C~2TuK 2015 03 20.474493 11 58 36.939 +01 03 48.08 23.5i 15FH401 568 C~2TuK 2015 03 20.502393 11 58 36.809 +01 03 48.94 23.6i 15FH401 568 C~2TuK 2015 03 20.516256 11 58 36.746 +01 03 49.34 23.5i 15FH401 568 C~2TuK 2015 03 20.554741 11 58 36.565 +01 03 50.50 23.5i 15FH401 568 C~2TuK 2015 03 25.466258 11 58 14.005 +01 06 15.83 24.7g 15FH401 568 C~2TuK 2015 03 25.495644 11 58 13.869 +01 06 16.76 24.9g 15FH401 568 C~2TuK 2015 03 25.525959 11 58 13.727 +01 06 17.61 25.0g 15FH401 568 C~2TuK 2015 03 25.551834 11 58 13.600 +01 06 18.42 24.8g 15FH401 568 C~2TuK
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 0.01 0.00 0.00
2 0.0001 -2.87 -0.01 -0.06 -0.03
3 0.0002 -5.00 -0.01 -0.04 0.01
4 0.0002 -6.03 0.02 -0.05 0.01
5 0.0003 -8.98 -0.01 -0.07 0.01
6 0.0138 -377.21 0.04 -1.32 -0.03
7 0.0138 -379.45 0.02 -1.28 0.04
8 0.0139 -381.74 0.03 -1.35 -0.01
9 0.0140 -383.81 -0.09 -1.36 -0.00
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.
15FH401 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