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: 15TJ361 # Created Tue Apr 1 01:10:35 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 17 observations of 17 # Arc: 5.13y # First observation: 2013/10/11 # Last observation: 2018/11/29 # Chi-squared of fit: 7.44 DOF: 28 RMS: 0.12 # Min/Max residuals: -0.27 0.17 # Exact a, adot, b, bdot, g, gdot: 1.564354E-05 2.302649E-02 9.952051E-07 -5.119955E-04 2.361607E-02 4.823619E-05 # Covariance matrix: 9.5219E-13 -7.7667E-13 -7.8646E-15 1.0658E-14 -2.3686E-13 -5.6645E-12 -7.7667E-13 7.6453E-13 7.7755E-15 -1.0812E-14 1.7660E-13 6.1737E-12 -7.8646E-15 7.7755E-15 3.4792E-13 -1.3149E-13 8.0917E-15 6.5460E-14 1.0658E-14 -1.0812E-14 -1.3149E-13 6.6217E-14 -8.7526E-15 -9.2358E-14 -2.3686E-13 1.7660E-13 8.0917E-15 -8.7526E-15 7.0759E-13 1.2080E-12 -5.6645E-12 6.1737E-12 6.5460E-14 -9.2358E-14 1.2080E-12 5.4751E-11 # lat0 lon0 xBary yBary zBary JD0 -8.036285 14.916105 -0.049448 -0.139233 -0.987042 2456576.748258 # Heliocentric elements and errors Epoch: 2456576.5000 = 2013/10/11 Mean Anomaly: 1.08963 +/- 0.395 Argument of Peri: 259.60641 +/- 0.433 Long of Asc Node: 114.27525 +/- 0.005 Inclination: 7.95499 +/- 0.000 Eccentricity: 0.04421929 +/- 0.0001 Semi-Major Axis: 45.33581779 +/- 0.0070 Time of Perihelion: 2456239.0288 +/- 122.4 Perihelion: 43.33110015 +/- 0.0087 Aphelion: 47.34053543 +/- 0.0091 Period (y) 305.2603 +/- 0.07 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.46524921 +/- 0.0014 Ecliptic Y 11.09994860 +/- 0.0004 Ecliptic Z -5.91970692 +/- 0.0002 Ecliptic XDOT -0.00069598 +/- 0.0000 Ecliptic YDOT 0.00257741 +/- 0.0000 Ecliptic ZDOT -0.00005942 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.33149698 +/- 0.0014 Geocenter to KBO 42.34409061 +/- 0.0015 # Hcoef: 7.49
The following table shows the complete astrometric record for 15TJ361. 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 (15TJ361) followed by the observatory code and reference code for the source of the astrometry.
2013 10 11.24748 01 07 19.569 -01 32 25.08 23.9r 15TJ361 W84 C~52UG 2014 10 02.30923 01 12 54.366 -00 59 23.80 23.0i 15TJ361 W84 C~52UG 2014 10 03.30739 01 12 50.076 -00 59 51.96 24.1r 15TJ361 W84 C~52UG 2014 10 03.31013 01 12 50.049 -00 59 51.88 23.2i 15TJ361 W84 C~52UG 2014 11 15.09832 01 09 52.886 -01 15 57.11 23.6r 15TJ361 W84 C~52UG 2015 09 04.30414 01 19 36.101 -00 17 20.40 23.1z 15TJ361 W84 C~52UG 2015 09 04.30552 01 19 36.102 -00 17 20.50 23.2i 15TJ361 W84 C~52UG 2015 10 10.291805 01 17 15.353 -00 34 10.91 23.9r 15TJ361 568 C~2TuU 2015 10 10.335415 01 17 15.158 -00 34 12.11 23.8r 15TJ361 568 C~2TuU 2015 10 10.369788 01 17 15.005 -00 34 13.04 23.8r 15TJ361 568 C~2TuU 2015 10 10.399745 01 17 14.871 -00 34 13.85 23.8r 15TJ361 568 C~2TuU 2015 10 14.274694 01 16 57.903 -00 35 57.46 24.7g 15TJ361 568 C~2TuU 2015 10 14.349677 01 16 57.571 -00 35 59.49 24.5g 15TJ361 568 C~2TuU 2015 10 14.379547 01 16 57.439 -00 36 00.20 24.5g 15TJ361 568 C~2TuU 2016 10 23.22603 01 21 09.559 -00 11 15.52 23.1r 15TJ361 W84 C~52UG 2017 08 22.35479 01 29 53.681 +00 44 59.88 24.2r 15TJ361 W84 C~52UG 2018 11 29.10663 01 28 36.790 +00 35 43.30 24.2r 15TJ361 W84 C~52UG
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 0.06 0.00 -0.27
2 0.9748 0.00 0.17 0.00 -0.10
3 0.9776 0.00 0.06 0.00 -0.12
4 0.9776 0.00 -0.16 0.00 0.04
5 1.0947 0.00 -0.02 0.00 0.13
6 1.8975 0.00 0.04 0.00 -0.08
7 1.8975 0.00 0.12 0.00 -0.14
8 1.9960 0.00 0.00 0.00 0.12
9 1.9961 0.00 -0.02 0.00 0.10
10 1.9962 0.00 -0.03 0.00 0.10
11 1.9963 0.00 -0.04 0.00 0.11
12 2.0069 0.00 -0.03 0.00 0.11
13 2.0071 0.00 -0.01 0.00 0.06
14 2.0072 0.00 0.01 0.00 0.14
15 3.0335 0.00 -0.26 0.00 0.13
16 3.8634 0.00 0.05 0.00 -0.10
17 5.1331 0.00 0.13 0.00 -0.19
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.
15TJ361 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 45.613 45.613 45.613 ecceobj 0.050 0.050 0.050 incobj 7.953 7.953 7.953 qmin 42.515 42.513 42.520 qmax 48.349 48.336 48.358 amean 45.320 45.320 45.320 amin 44.965 44.962 44.967 amax 45.690 45.692 45.689 emean 0.046 0.046 0.046 emin 0.033 0.033 0.033 emax 0.058 0.058 0.059 imean 6.416 6.416 6.416 imin 6.004 6.004 6.004 imax 6.847 6.848 6.847 excite_mean 0.121 0.121 0.121 fracstop 1.000 1.000 1.000 cjmean 3.100 3.100 3.100 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 180.2 180.3 180.4 kozaiamp 180.0 180.0 180.0