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: 15KJ464
# Created Sun Oct 19 01:11:02 2025
# Orbit generated from Bernstein formalism
# Fitting 9 observations of 9
# Arc: 34.97d
# First observation: 2015/05/17
# Last observation: 2015/06/21
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.156360 -0.000001 0.042925 0.072885 0.000000
# Chi-squared of fit: 0.82 DOF: 12 RMS: 0.05
# Min/Max residuals: -0.08 0.09
# Exact a, adot, b, bdot, g, gdot:
2.723569E-05 1.135128E-01 1.051054E-05 4.220398E-02 6.600365E-02 -1.570834E-02
# Covariance matrix:
6.7874E-13 1.7232E-09 -7.0291E-14 2.5085E-11 2.7262E-10 -4.9539E-09
1.7232E-09 7.7818E-06 -3.0106E-10 1.0578E-07 1.2202E-06 -2.4349E-05
-7.0291E-14 -3.0106E-10 2.7780E-13 -7.4177E-12 -4.7432E-11 8.8976E-10
2.5085E-11 1.0578E-07 -7.4177E-12 1.6218E-09 1.6690E-08 -3.0683E-07
2.7262E-10 1.2202E-06 -4.7432E-11 1.6690E-08 1.9146E-07 -3.7895E-06
-4.9539E-09 -2.4349E-05 8.8976E-10 -3.0683E-07 -3.7895E-06 8.2867E-05
# lat0 lon0 xBary yBary zBary JD0
5.227772 -123.169298 0.012506 0.092069 -1.005224 2457159.892568
# Heliocentric elements and errors
Epoch: 2457150.5000 = 2015/05/08
Mean Anomaly: 350.20910 +/- 3.859
Argument of Peri: 39.45241 +/- 11.276
Long of Asc Node: 223.80618 +/- 0.306
Inclination: 20.91050 +/- 0.450
Eccentricity: 0.41838918 +/- 0.0735
Semi-Major Axis: 26.97683731 +/- 2.4745
Time of Perihelion: 2458542.3900 +/- 514.1
Perihelion: 15.69002039 +/- 2.4501
Aphelion: 38.26365424 +/- 4.0312
Period (y) 140.1183 +/- 19.28
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -8.82038092 +/- 0.0547
Ecliptic Y -13.46748349 +/- 0.0837
Ecliptic Z 1.38067165 +/- 0.0092
Ecliptic XDOT 0.00438077 +/- 0.0003
Ecliptic YDOT -0.00190557 +/- 0.0003
Ecliptic ZDOT 0.00168406 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 16.15792330 +/- 0.0759
Geocenter to KBO 15.15067777 +/- 0.1004
# Hcoef: 11.24
The following table shows the complete astrometric record for 15KJ464. 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 (15KJ464) followed by the observatory code and reference code for the source of the astrometry.
2015 05 17.39179 15 43 06.64 -14 21 29.0 22.7G 15KJ464 T14 C~94qP 2015 05 17.43344 15 43 06.18 -14 21 26.4 15KJ464 T14 C~94qP 2015 05 17.48044 15 43 05.66 -14 21 23.4 15KJ464 T14 C~94qP 2015 05 17.48543 15 43 05.60 -14 21 23.1 15KJ464 T14 C~94qP 2015 05 17.51054 15 43 05.33 -14 21 21.7 15KJ464 T14 C~94qP 2015 05 26.45236 15 41 28.55 -14 12 27.1 22.8G 15KJ464 T14 C~94qP 2015 06 18.34748 15 37 41.93 -13 52 52.8 23.3G 15KJ464 T14 C~94qP 2015 06 18.38842 15 37 41.57 -13 52 50.9 15KJ464 T14 C~94qP 2015 06 21.36303 15 37 16.39 -13 50 45.7 23.5G 15KJ464 T14 C~94qP
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 -0.08
2 0.0001 -7.10 0.01 1.03 -0.03
3 0.0002 -15.13 -0.00 2.26 0.08
4 0.0003 -16.05 -0.07 2.35 0.06
5 0.0003 -20.19 0.08 2.84 -0.06
6 0.0248 -1511.37 -0.01 206.40 0.04
7 0.0875 -4991.02 0.01 596.88 -0.05
8 0.0876 -4996.56 0.05 597.52 0.09
9 0.0957 -5382.49 -0.05 634.87 -0.05
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.
15KJ464 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