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: 15FU496 # Created Sun Apr 27 01:10:23 2025 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 62.97d # First observation: 2015/01/21 # Last observation: 2015/03/25 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.031533 0.000000 -0.003422 0.025825 0.000000 # Chi-squared of fit: 2.94 DOF: 16 RMS: 0.09 # Min/Max residuals: -0.17 0.23 # Exact a, adot, b, bdot, g, gdot: 1.590090E-05 2.472585E-02 -2.441697E-06 -3.109758E-03 2.477171E-02 1.960382E-04 # Covariance matrix: 3.5582E-13 1.0110E-10 7.3372E-15 -4.5519E-12 1.4293E-11 -8.8792E-10 1.0110E-10 1.6825E-07 1.2074E-11 -7.3805E-09 2.2682E-08 -1.6551E-06 7.3372E-15 1.2074E-11 2.9198E-13 -2.2807E-12 1.6176E-12 -1.2179E-10 -4.5519E-12 -7.3805E-09 -2.2807E-12 3.4422E-10 -1.0044E-09 6.9912E-08 1.4293E-11 2.2682E-08 1.6176E-12 -1.0044E-09 3.1577E-09 -1.9421E-07 -8.8792E-10 -1.6551E-06 -1.2179E-10 6.9912E-08 -1.9421E-07 2.4702E-05 # lat0 lon0 xBary yBary zBary JD0 -14.800429 140.647703 0.334271 -0.235717 -0.892779 2457043.963168 # Heliocentric elements and errors Epoch: 2457040.5000 = 2015/01/18 Mean Anomaly: 359.12333 +/- 168.909 Argument of Peri: 244.85454 +/- 192.391 Long of Asc Node: 257.22454 +/- 0.401 Inclination: 16.16150 +/- 0.055 Eccentricity: 0.06303312 +/- 0.0278 Semi-Major Axis: 44.04175641 +/- 1.0852 Time of Perihelion: 2457300.4734 +/- 50089.3 Perihelion: 41.26566722 +/- 1.5900 Aphelion: 46.81784560 +/- 1.6808 Period (y) 292.2841 +/- 10.80 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -30.68519103 +/- 0.0685 Ecliptic Y 25.59215313 +/- 0.0561 Ecliptic Z -10.31240906 +/- 0.0234 Ecliptic XDOT -0.00168498 +/- 0.0004 Ecliptic YDOT -0.00216092 +/- 0.0004 Ecliptic ZDOT -0.00033774 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 41.26602756 +/- 0.0619 Geocenter to KBO 40.36862683 +/- 0.0916 # Hcoef: 8.58
The following table shows the complete astrometric record for 15FU496. 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 (15FU496) followed by the observatory code and reference code for the source of the astrometry.
2015 01 21.46239 09 13 32.72 +00 32 36.1 24.5i 15FU496 T09 C~8nc2 2015 01 21.53196 09 13 32.39 +00 32 36.8 24.5i 15FU496 T09 C~8nc2 2015 01 21.54090 09 13 32.35 +00 32 37.0 24.9i 15FU496 T09 C~8nc2 2015 01 21.54360 09 13 32.33 +00 32 37.0 24.5i 15FU496 T09 C~8nc2 2015 01 21.54636 09 13 32.33 +00 32 37.0 24.2i 15FU496 T09 C~8nc2 2015 03 18.36332 09 09 24.36 +00 53 50.1 24.4r 15FU496 T09 C~8nc2 2015 03 18.38297 09 09 24.28 +00 53 50.8 24.6r 15FU496 T09 C~8nc2 2015 03 25.38283 09 09 02.47 +00 57 07.3 25.5g 15FU496 T09 C~8nc2 2015 03 25.41076 09 09 02.40 +00 57 08.3 25.4g 15FU496 T09 C~8nc2 2015 03 25.42572 09 09 02.35 +00 57 08.5 24.9g 15FU496 T09 C~8nc2 2015 03 25.43008 09 09 02.34 +00 57 09.0 25.2g 15FU496 T09 C~8nc2
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 -0.02 0.00 0.09
2 0.0002 -4.93 0.00 -0.86 -0.07
3 0.0002 -5.56 0.00 -0.85 0.03
4 0.0002 -5.84 -0.09 -0.94 -0.04
5 0.0002 -5.84 0.11 -0.94 -0.01
6 0.1530 -3936.84 0.11 66.81 -0.04
7 0.1531 -3938.20 -0.11 67.11 0.04
8 0.1723 -4310.02 -0.05 153.57 -0.17
9 0.1723 -4311.33 0.06 154.20 0.09
10 0.1724 -4312.10 0.03 154.16 -0.15
11 0.1724 -4312.40 -0.04 154.59 0.23
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.
15FU496 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