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: 15KF465 # Created Sun Oct 19 01:11:02 2025 # Orbit generated from Bernstein formalism # Fitting 16 observations of 16 # Arc: 55.89d # First observation: 2015/05/17 # Last observation: 2015/07/12 Preliminary a, adot, b, bdot, g, gdot: -0.000003 0.030388 -0.000009 0.002923 0.026272 0.000000 # Chi-squared of fit: 10.32 DOF: 26 RMS: 0.14 # Min/Max residuals: -0.27 0.34 # Exact a, adot, b, bdot, g, gdot: 1.638549E-05 2.640703E-02 1.230425E-06 1.883166E-03 2.565336E-02 -2.239828E-03 # Covariance matrix: 4.7635E-13 4.1122E-11 -5.1044E-14 1.0277E-11 1.1565E-11 4.4795E-10 4.1122E-11 6.0203E-08 -1.2295E-10 1.5649E-08 9.8340E-09 -1.3973E-06 -5.1044E-14 -1.2295E-10 3.9313E-13 -3.3248E-11 -1.9560E-11 3.0192E-09 1.0277E-11 1.5649E-08 -3.3248E-11 4.1029E-09 2.5467E-09 -3.6679E-07 1.1565E-11 9.8340E-09 -1.9560E-11 2.5467E-09 1.6772E-09 -2.0682E-07 4.4795E-10 -1.3973E-06 3.0192E-09 -3.6679E-07 -2.0682E-07 3.9077E-05 # lat0 lon0 xBary yBary zBary JD0 14.444577 -140.626393 -0.292074 0.241137 -0.935783 2457159.963808 # Heliocentric elements and errors Epoch: 2457150.5000 = 2015/05/08 Mean Anomaly: 323.31508 +/- 59.245 Argument of Peri: 120.27032 +/- 83.181 Long of Asc Node: 145.47814 +/- 0.156 Inclination: 14.61907 +/- 0.010 Eccentricity: 0.11451569 +/- 0.1944 Semi-Major Axis: 43.70086634 +/- 2.6469 Time of Perihelion: 2467903.2259 +/- 17337.8 Perihelion: 38.69643145 +/- 8.8132 Aphelion: 48.70530122 +/- 8.9935 Period (y) 288.8972 +/- 26.25 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.74560367 +/- 0.0466 Ecliptic Y -24.78623845 +/- 0.0382 Ecliptic Z 9.72372006 +/- 0.0155 Ecliptic XDOT 0.00200272 +/- 0.0005 Ecliptic YDOT -0.00200608 +/- 0.0004 Ecliptic ZDOT 0.00013507 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 39.92128863 +/- 0.0422 Geocenter to KBO 38.98124776 +/- 0.0622 # Hcoef: 8.72
The following table shows the complete astrometric record for 15KF465. 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 (15KF465) followed by the observatory code and reference code for the source of the astrometry.
2015 05 17.46303 14 46 05.72 -00 53 17.9 25.0g 15KF465 T09 C~94qT 2015 05 17.47362 14 46 05.69 -00 53 17.7 25.5g 15KF465 T09 C~94qT 2015 05 21.37537 14 45 47.71 -00 52 14.6 24.9i 15KF465 T09 C~94qT 2015 05 21.38488 14 45 47.67 -00 52 14.3 25.3i 15KF465 T09 C~94qT 2015 05 21.39295 14 45 47.62 -00 52 14.3 24.8i 15KF465 T09 C~94qT 2015 05 21.39564 14 45 47.62 -00 52 14.3 24.6i 15KF465 T09 C~94qT 2015 05 21.40372 14 45 47.58 -00 52 14.1 24.5i 15KF465 T09 C~94qT 2015 05 21.41449 14 45 47.53 -00 52 14.0 24.7i 15KF465 T09 C~94qT 2015 05 21.42256 14 45 47.49 -00 52 13.8 24.2i 15KF465 T09 C~94qT 2015 05 26.29897 14 45 25.70 -00 51 05.9 24.2y 15KF465 T09 C~94qT 2015 05 26.31363 14 45 25.61 -00 51 05.4 24.3y 15KF465 T09 C~94qT 2015 05 26.34604 14 45 25.48 -00 51 05.7 23.7y 15KF465 T09 C~94qT 2015 05 26.36079 14 45 25.39 -00 51 05.2 24.1y 15KF465 T09 C~94qT 2015 07 12.31035 14 43 02.23 -00 51 37.6 25.0z 15KF465 T09 C~94qT 2015 07 12.33461 14 43 02.21 -00 51 37.8 24.3z 15KF465 T09 C~94qT 2015 07 12.34809 14 43 02.20 -00 51 38.1 24.4z 15KF465 T09 C~94qT
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 -0.01
2 0.0000 -0.49 0.26 0.05 0.10
3 0.0107 -276.49 -0.06 -22.84 -0.08
4 0.0107 -277.16 -0.04 -22.74 0.09
5 0.0108 -277.87 -0.18 -22.97 -0.08
6 0.0108 -277.87 0.01 -22.97 -0.07
7 0.0108 -278.50 -0.05 -22.96 -0.00
8 0.0108 -279.25 -0.03 -23.10 -0.06
9 0.0108 -279.88 -0.09 -23.09 -0.00
10 0.0242 -611.74 0.28 -59.00 0.15
11 0.0242 -613.18 -0.16 -58.94 0.34
12 0.0243 -614.94 0.27 -59.82 -0.27
13 0.0244 -616.38 -0.17 -59.76 -0.08
14 0.1529 -2649.59 -0.15 -751.21 -0.11
15 0.1530 -2649.81 -0.00 -751.49 0.09
16 0.1530 -2649.86 0.15 -751.82 0.02
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.
15KF465 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