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: 15JE13 # Created Tue Sep 30 01:10:49 2025 # Orbit generated from Bernstein formalism # Fitting 17 observations of 17 # Arc: 61.94d # First observation: 2015/03/22 # Last observation: 2015/05/23 Preliminary a, adot, b, bdot, g, gdot: -0.000002 0.032639 -0.000001 -0.006146 0.028441 0.000000 # Chi-squared of fit: 7.20 DOF: 28 RMS: 0.12 # Min/Max residuals: -0.34 0.18 # Exact a, adot, b, bdot, g, gdot: 1.701325E-05 2.898653E-02 -3.638870E-06 -6.048667E-03 2.776179E-02 -1.151246E-03 # Covariance matrix: 3.9560E-13 5.1177E-11 -1.3027E-14 -1.2212E-12 9.0114E-12 1.5544E-11 5.1177E-11 9.5906E-08 -2.3546E-11 -2.0121E-09 1.5413E-08 -1.7614E-07 -1.3027E-14 -2.3546E-11 3.6633E-13 -1.7987E-12 -3.7766E-12 4.5478E-11 -1.2212E-12 -2.0121E-09 -1.7987E-12 6.3216E-11 -3.3132E-10 1.5411E-09 9.0114E-12 1.5413E-08 -3.7766E-12 -3.3132E-10 2.5107E-09 -1.9258E-08 1.5544E-11 -1.7614E-07 4.5478E-11 1.5411E-09 -1.9258E-08 2.7940E-06 # lat0 lon0 xBary yBary zBary JD0 12.363128 -144.716070 0.553633 0.176687 -0.805548 2457104.047688 # Heliocentric elements and errors Epoch: 2457100.5000 = 2015/03/19 Mean Anomaly: 325.10252 +/- 24.399 Argument of Peri: 174.03901 +/- 30.398 Long of Asc Node: 79.88843 +/- 0.262 Inclination: 16.71381 +/- 0.072 Eccentricity: 0.08230916 +/- 0.0442 Semi-Major Axis: 39.39638653 +/- 0.7074 Time of Perihelion: 2465855.8714 +/- 6116.8 Perihelion: 36.15370298 +/- 1.8566 Aphelion: 42.63907008 +/- 1.9004 Period (y) 247.2822 +/- 6.66 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -29.71764788 +/- 0.0518 Ecliptic Y -20.34865251 +/- 0.0367 Ecliptic Z 7.71218244 +/- 0.0139 Ecliptic XDOT 0.00163412 +/- 0.0001 Ecliptic YDOT -0.00234901 +/- 0.0001 Ecliptic ZDOT -0.00060690 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.83319172 +/- 0.0466 Geocenter to KBO 36.02073178 +/- 0.0650 # Hcoef: 9.21
The following table shows the complete astrometric record for 15JE13. 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 (15JE13) followed by the observatory code and reference code for the source of the astrometry.
2015 03 22.54691 14 28 21.75 -01 36 16.2 24.1i 15JE13 T09 C~94qH 2015 03 22.59857 14 28 21.56 -01 36 14.8 24.9i 15JE13 T09 C~94qH 2015 03 22.60967 14 28 21.50 -01 36 14.5 25.2i 15JE13 T09 C~94qH 2015 03 22.62345 14 28 21.45 -01 36 14.0 24.4i 15JE13 T09 C~94qH 2015 05 15.409703 14 23 57.790 -01 14 02.00 24.5r 15JE13 568 C~2TuN 2015 05 15.431048 14 23 57.670 -01 14 01.88 24.6r 15JE13 568 C~2TuN 2015 05 15.446581 14 23 57.593 -01 14 01.66 24.8r 15JE13 568 C~2TuN 2015 05 15.448689 14 23 57.580 -01 14 01.55 24.6r 15JE13 568 C~2TuN 2015 05 15.463998 14 23 57.507 -01 14 01.29 24.4r 15JE13 568 C~2TuN 2015 05 17.348323 14 23 48.150 -01 13 33.47 25.4g 15JE13 568 C~2TuN 2015 05 17.367074 14 23 48.047 -01 13 33.14 25.5g 15JE13 568 C~2TuN 2015 05 17.433199 14 23 47.714 -01 13 32.18 25.3g 15JE13 568 C~2TuN 2015 05 23.40107 14 23 18.87 -01 12 16.3 24.8z 15JE13 T09 C~94qH 2015 05 23.41833 14 23 18.82 -01 12 16.1 24.7z 15JE13 T09 C~94qH 2015 05 23.45401 14 23 18.64 -01 12 15.8 25.2z 15JE13 T09 C~94qH 2015 05 23.45689 14 23 18.62 -01 12 15.6 24.7z 15JE13 T09 C~94qH 2015 05 23.48907 14 23 18.47 -01 12 15.8 24.7z 15JE13 T09 C~94qH
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 -0.10 0.00 0.04
2 0.0001 -3.15 0.16 0.40 0.01
3 0.0002 -4.10 -0.05 0.39 -0.09
4 0.0002 -4.97 -0.01 0.62 0.03
5 0.1475 -4177.49 0.04 -24.94 0.18
6 0.1475 -4179.23 -0.05 -25.41 -0.07
7 0.1476 -4180.39 -0.01 -25.58 -0.08
8 0.1476 -4180.61 -0.07 -25.54 -0.01
9 0.1476 -4181.74 -0.01 -25.65 0.03
10 0.1528 -4323.54 0.13 -44.99 -0.04
11 0.1528 -4325.10 -0.01 -45.18 -0.02
12 0.1530 -4330.14 -0.01 -45.90 -0.01
13 0.1693 -4764.07 -0.31 -114.88 -0.00
14 0.1694 -4764.85 0.16 -114.94 0.17
15 0.1695 -4767.50 0.06 -115.53 0.03
16 0.1695 -4767.85 -0.08 -115.44 0.16
17 0.1696 -4769.91 0.15 -116.36 -0.34
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.
15JE13 quality flag:1 Type: 3:2E SCATNEAR SCATEXTD axisobj 39.045 41.582 37.202 ecceobj 0.078 0.202 0.020 incobj 16.720 16.569 16.956 qmin 33.539 31.704 34.731 qmax 46.145 52.434 40.255 amean 39.458 40.670 37.429 amin 38.955 39.485 37.147 amax 39.995 42.490 37.721 emean 0.110 0.192 0.042 emin 0.069 0.152 0.015 emax 0.154 0.238 0.069 imean 14.212 14.358 16.391 imin 12.862 10.244 13.596 imax 15.903 17.365 19.649 excite_mean 0.270 0.315 0.285 fracstop 1.000 1.000 1.000 cjmean 2.969 2.944 2.934 libcent 0 178.2 -180.0 -180.0 libamp 0 141.9 -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 179.2 185.0 180.2 kozaiamp 180.0 180.0 179.9