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: 15JL13 # Created Mon Jun 23 01:10:19 2025 # Orbit generated from Bernstein formalism # Fitting 18 observations of 18 # Arc: 61.93d # First observation: 2015/03/22 # Last observation: 2015/05/23 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.024386 -0.000000 -0.012309 0.024130 0.000000 # Chi-squared of fit: 2.89 DOF: 30 RMS: 0.07 # Min/Max residuals: -0.18 0.16 # Exact a, adot, b, bdot, g, gdot: 1.376832E-05 2.103997E-02 -8.056574E-06 -1.221945E-02 2.351899E-02 -4.393904E-03 # Covariance matrix: 3.4925E-13 8.3792E-11 -1.3336E-14 -1.3157E-12 1.3969E-11 -1.0570E-10 8.3792E-11 1.2886E-07 -2.0250E-11 -1.6783E-09 2.0503E-08 -3.2085E-07 -1.3336E-14 -2.0250E-11 2.9263E-13 -1.6214E-12 -3.2073E-12 5.5296E-11 -1.3157E-12 -1.6783E-09 -1.6214E-12 5.2778E-11 -2.9065E-10 -3.3662E-09 1.3969E-11 2.0503E-08 -3.2073E-12 -2.9065E-10 3.3023E-09 -3.8361E-08 -1.0570E-10 -3.2085E-07 5.5296E-11 -3.3662E-09 -3.8361E-08 4.8651E-06 # lat0 lon0 xBary yBary zBary JD0 11.697179 -146.441335 0.528604 0.170609 -0.823472 2457104.044228 # Heliocentric elements and errors Epoch: 2457100.5000 = 2015/03/19 Mean Anomaly: 330.43259 +/- 5.653 Argument of Peri: 209.58064 +/- 12.691 Long of Asc Node: 51.78247 +/- 0.279 Inclination: 32.01257 +/- 0.369 Eccentricity: 0.28036938 +/- 0.0896 Semi-Major Axis: 55.23737250 +/- 3.5222 Time of Perihelion: 2469416.1889 +/- 2039.0 Perihelion: 39.75050474 +/- 5.5613 Aphelion: 70.72424025 +/- 6.6963 Period (y) 410.5421 +/- 39.27 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -35.69184957 +/- 0.0848 Ecliptic Y -23.04038570 +/- 0.0562 Ecliptic Z 8.61992129 +/- 0.0211 Ecliptic XDOT 0.00152762 +/- 0.0002 Ecliptic YDOT -0.00192936 +/- 0.0001 Ecliptic ZDOT -0.00149654 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 43.34824728 +/- 0.0761 Geocenter to KBO 42.51882826 +/- 0.1039 # Hcoef: 7.27
The following table shows the complete astrometric record for 15JL13. 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 (15JL13) followed by the observatory code and reference code for the source of the astrometry.
2015 03 22.54345 14 21 06.58 -01 40 46.8 23.6i 15JL13 T09 C~8suo 2015 03 22.59302 14 21 06.39 -01 40 45.8 23.4i 15JL13 T09 C~8suo 2015 03 22.60698 14 21 06.33 -01 40 45.3 23.5i 15JL13 T09 C~8suo 2015 03 22.61803 14 21 06.31 -01 40 45.1 23.7i 15JL13 T09 C~8suo 2015 03 22.62076 14 21 06.29 -01 40 45.0 23.0i 15JL13 T09 C~8suo 2015 05 15.406868 14 17 10.269 -01 24 47.57 23.6r 15JL13 568 C~2TuN 2015 05 15.428928 14 17 10.172 -01 24 47.37 23.6r 15JL13 568 C~2TuN 2015 05 15.444453 14 17 10.102 -01 24 47.24 23.6r 15JL13 568 C~2TuN 2015 05 15.459773 14 17 10.033 -01 24 47.08 23.5r 15JL13 568 C~2TuN 2015 05 15.461886 14 17 10.021 -01 24 47.05 23.5r 15JL13 568 C~2TuN 2015 05 15.479017 14 17 09.947 -01 24 46.86 23.6r 15JL13 568 C~2TuN 2015 05 17.345479 14 17 01.791 -01 24 29.25 24.1g 15JL13 568 C~2TuN 2015 05 17.364965 14 17 01.707 -01 24 29.07 24.2g 15JL13 568 C~2TuN 2015 05 17.428939 14 17 01.426 -01 24 28.45 24.2g 15JL13 568 C~2TuN 2015 05 17.431078 14 17 01.413 -01 24 28.44 24.0g 15JL13 568 C~2TuN 2015 05 23.39733 14 16 36.11 -01 23 42.3 23.3z 15JL13 T09 C~8suo 2015 05 23.43325 14 16 35.94 -01 23 42.3 23.5z 15JL13 T09 C~8suo 2015 05 23.46876 14 16 35.81 -01 23 42.0 23.0z 15JL13 T09 C~8suo
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 0.08 0.00 -0.03
2 0.0001 -3.02 0.00 -0.00 -0.13
3 0.0002 -4.03 -0.18 0.17 0.01
4 0.0002 -4.38 0.13 0.26 0.08
5 0.0002 -4.70 -0.03 0.26 0.07
6 0.1475 -3661.28 -0.02 -271.00 0.03
7 0.1475 -3662.72 0.01 -271.29 0.03
8 0.1476 -3663.76 0.01 -271.52 0.00
9 0.1476 -3664.79 0.00 -271.71 0.01
10 0.1476 -3664.97 -0.03 -271.74 0.00
11 0.1477 -3666.08 -0.00 -271.93 0.03
12 0.1528 -3787.33 -0.01 -295.94 -0.06
13 0.1528 -3788.58 0.02 -296.19 -0.05
14 0.1530 -3792.76 0.04 -297.00 0.00
15 0.1530 -3792.94 -0.01 -297.06 -0.03
16 0.1693 -4166.31 0.04 -379.56 0.16
17 0.1694 -4168.71 -0.15 -380.41 -0.15
18 0.1695 -4170.65 0.10 -380.78 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.
15JL13 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