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 Thu Sep 4 01:10:32 2025
# Orbit generated from Bernstein formalism
# Fitting 16 observations of 16
# Arc: 10.91d
# First observation: 2015/03/18
# Last observation: 2015/03/29
Preliminary a, adot, b, bdot, g, gdot:
0.000001 0.022113 -0.000001 -0.000345 0.024577 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# WARNING MRQMIN stopped after 18 iterations -- oscilliatory solution
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 4.66 DOF: 27 RMS: 0.10
# Min/Max residuals: -0.20 0.14
# Exact a, adot, b, bdot, g, gdot:
1.417537E-05 2.037257E-02 -9.194569E-07 -3.457327E-04 2.429597E-02 -1.385720E-02
# Covariance matrix:
4.4391E-11 6.5302E-08 -2.5610E-13 4.4912E-11 1.0413E-08 3.6900E-08
6.5302E-08 9.6601E-05 -3.7884E-10 6.6446E-08 1.5400E-05 5.2918E-05
-2.5610E-13 -3.7884E-10 2.1972E-13 -9.7766E-12 -6.0395E-11 -2.0511E-10
4.4912E-11 6.6446E-08 -9.7766E-12 7.6189E-10 1.0593E-08 3.5459E-08
1.0413E-08 1.5400E-05 -6.0395E-11 1.0593E-08 2.4553E-06 8.4885E-06
3.6900E-08 5.2918E-05 -2.0511E-10 3.5459E-08 8.4885E-06 1.1215E-04
# lat0 lon0 xBary yBary zBary JD0
0.838059 179.300162 0.033014 0.014628 -0.991504 2457100.019348
# Heliocentric elements and errors
Epoch: 2457100.5000 = 2015/03/19
Mean Anomaly: 312.21396 +/- 43.513
Argument of Peri: 255.88957 +/- 66.565
Long of Asc Node: 39.05247 +/- 14.377
Inclination: 1.27827 +/- 0.387
Eccentricity: 0.56735701 +/- 0.4252
Semi-Major Axis: 46.87275785 +/- 25.7875
Time of Perihelion: 2472659.3568 +/- 5988.4
Perihelion: 20.27917005 +/- 22.8414
Aphelion: 73.46634565 +/- 45.0654
Period (y) 320.9142 +/- 264.83
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -42.14589125 +/- 2.6540
Ecliptic Y 0.54764513 +/- 0.0327
Ecliptic Z 0.60199044 +/- 0.0388
Ecliptic XDOT 0.00152922 +/- 0.0013
Ecliptic YDOT -0.00232040 +/- 0.0010
Ecliptic ZDOT -0.00006171 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.15374784 +/- 2.6535
Geocenter to KBO 41.15909691 +/- 2.6545
# Hcoef: 8.01
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 18.51857 11 58 45.91 +01 02 50.2 24.8r 15FH401 T09 C~8vFU 2015 03 18.54922 11 58 45.76 +01 02 50.9 24.2r 15FH401 T09 C~8vFU 2015 03 18.57522 11 58 45.65 +01 02 51.5 24.3r 15FH401 T09 C~8vFU 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 2015 03 29.32074 11 57 56.45 +01 08 08.8 24.0y 15FH401 T09 C~8vFU 2015 03 29.41284 11 57 56.01 +01 08 11.5 23.7y 15FH401 T09 C~8vFU 2015 03 29.41554 11 57 56.01 +01 08 11.5 23.7y 15FH401 T09 C~8vFU 2015 03 29.42373 11 57 55.96 +01 08 11.8 24.0y 15FH401 T09 C~8vFU
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 -0.19 0.00 0.14
2 0.0001 -2.34 -0.20 -0.25 -0.09
3 0.0002 -4.09 0.02 -0.36 -0.18
4 0.0053 -143.59 0.13 -0.36 0.05
5 0.0054 -146.46 0.11 -0.42 0.02
6 0.0054 -148.59 0.10 -0.41 0.05
7 0.0055 -149.62 0.13 -0.41 0.05
8 0.0056 -152.57 0.10 -0.43 0.06
9 0.0190 -520.80 -0.01 -1.68 -0.06
10 0.0191 -523.04 -0.02 -1.64 0.00
11 0.0192 -525.34 -0.02 -1.71 -0.04
12 0.0193 -527.41 -0.13 -1.72 -0.04
13 0.0296 -807.29 0.12 -2.75 0.07
14 0.0298 -814.42 -0.10 -2.90 -0.00
15 0.0298 -814.42 0.11 -2.90 0.00
16 0.0299 -815.23 -0.09 -2.92 -0.01
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