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: 15JP13 # Created Mon May 19 01:10:30 2025 # Orbit generated from Bernstein formalism # Fitting 15 observations of 15 # Arc: 10.92d # First observation: 2015/05/15 # Last observation: 2015/05/26 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.034428 -0.000000 0.000810 0.029376 0.000000 # WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution # WARNING Fitting with energy constraint # Chi-squared of fit: 4.20 DOF: 25 RMS: 0.09 # Min/Max residuals: -0.16 0.24 # Exact a, adot, b, bdot, g, gdot: 1.600904E-05 2.927568E-02 2.104898E-07 3.423311E-04 2.851544E-02 -7.613273E-03 # Covariance matrix: 3.2922E-12 4.7268E-09 -3.1678E-14 4.2740E-10 8.2037E-10 -1.4139E-08 4.7268E-09 7.5911E-06 -5.8624E-11 6.8515E-07 1.3088E-06 -3.0497E-05 -3.1678E-14 -5.8624E-11 2.8053E-13 -1.6788E-11 -9.8087E-12 6.7577E-10 4.2740E-10 6.8515E-07 -1.6788E-11 6.2572E-08 1.1812E-07 -2.7802E-06 8.2037E-10 1.3088E-06 -9.8087E-12 1.1812E-07 2.2589E-07 -4.9599E-06 -1.4139E-08 -3.0497E-05 6.7577E-10 -2.7802E-06 -4.9599E-06 5.6101E-04 # lat0 lon0 xBary yBary zBary JD0 12.372387 -144.159650 -0.318014 0.205267 -0.935318 2457157.916154 # Heliocentric elements and errors Epoch: 2457150.5000 = 2015/05/08 Mean Anomaly: 290.35434 +/- 97.043 Argument of Peri: 185.44762 +/- 51.629 Long of Asc Node: 128.51984 +/- 1.860 Inclination: 12.05298 +/- 0.011 Eccentricity: 0.24257144 +/- 0.7700 Semi-Major Axis: 37.03813963 +/- 17.8163 Time of Perihelion: 2473078.5920 +/- 18986.6 Perihelion: 28.05374468 +/- 31.5523 Aphelion: 46.02253457 +/- 36.1045 Period (y) 225.4146 +/- 162.65 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -28.36131395 +/- 0.4629 Ecliptic Y -20.87571175 +/- 0.3343 Ecliptic Z 7.51404709 +/- 0.1252 Ecliptic XDOT 0.00222749 +/- 0.0019 Ecliptic YDOT -0.00186254 +/- 0.0012 Ecliptic ZDOT -0.00012444 +/- 0.0005 # Distances at JD0 (AU) Heliocenter to KBO 36.00861527 +/- 0.4137 Geocenter to KBO 35.06871929 +/- 0.5845 # Hcoef: 8.02
The following table shows the complete astrometric record for 15JP13. 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 (15JP13) followed by the observatory code and reference code for the source of the astrometry.
2015 05 15.415376 14 30 25.941 -01 46 18.07 23.6r 15JP13 568 C~2TuN 2015 05 15.466105 14 30 25.674 -01 46 17.11 23.5r 15JP13 568 C~2TuN 2015 05 15.483249 14 30 25.585 -01 46 16.76 23.5r 15JP13 568 C~2TuN 2015 05 17.351168 14 30 16.080 -01 45 41.08 23.7g 15JP13 568 C~2TuN 2015 05 17.435309 14 30 15.654 -01 45 39.57 23.9g 15JP13 568 C~2TuN 2015 05 17.450320 14 30 15.577 -01 45 39.30 24.0g 15JP13 568 C~2TuN 2015 05 23.40482 14 29 46.09 -01 43 58.6 23.3z 15JP13 T09 C~8suo 2015 05 23.42124 14 29 46.00 -01 43 58.4 23.1z 15JP13 T09 C~8suo 2015 05 23.47449 14 29 45.72 -01 43 57.6 23.9z 15JP13 T09 C~8suo 2015 05 23.47737 14 29 45.71 -01 43 57.6 23.4z 15JP13 T09 C~8suo 2015 05 23.49195 14 29 45.64 -01 43 57.2 23.9z 15JP13 T09 C~8suo 2015 05 26.26880 14 29 32.41 -01 43 16.9 23.8y 15JP13 T09 C~8suo 2015 05 26.27166 14 29 32.38 -01 43 17.1 22.8y 15JP13 T09 C~8suo 2015 05 26.32251 14 29 32.15 -01 43 16.4 23.5y 15JP13 T09 C~8suo 2015 05 26.33723 14 29 32.08 -01 43 16.3 23.0y 15JP13 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 0.05 0.00 -0.00
2 0.0001 -4.10 0.02 -0.38 -0.05
3 0.0002 -5.47 0.02 -0.48 -0.03
4 0.0053 -151.87 -0.14 -12.69 0.05
5 0.0055 -158.41 -0.00 -13.32 0.04
6 0.0056 -159.59 0.00 -13.43 0.04
7 0.0219 -610.53 0.24 -60.77 0.09
8 0.0219 -611.87 0.12 -61.02 -0.00
9 0.0221 -616.11 -0.12 -61.61 -0.10
10 0.0221 -616.25 -0.05 -61.66 -0.12
11 0.0221 -617.37 -0.08 -61.62 0.05
12 0.0297 -818.13 -0.01 -87.49 0.22
13 0.0297 -818.49 -0.16 -87.83 -0.08
14 0.0299 -821.98 0.04 -88.28 -0.01
15 0.0299 -823.00 0.08 -88.52 -0.10
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.
15JP13 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