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: 15FJ345 # Created Sun Nov 24 02:10:14 2024 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 1.13y # First observation: 2015/03/17 # Last observation: 2016/05/03 Preliminary a, adot, b, bdot, g, gdot: -0.000019 0.012451 0.000006 -0.007898 0.017407 0.000000 # Chi-squared of fit: 14.64 DOF: 20 RMS: 0.19 # Min/Max residuals: -0.47 0.34 # Exact a, adot, b, bdot, g, gdot: 1.061030E-05 1.249447E-02 -5.943754E-06 -7.922385E-03 1.754727E-02 2.760444E-03 # Covariance matrix: 4.0726E-13 4.4219E-14 3.4655E-14 -3.3801E-13 5.4193E-13 3.7507E-11 4.4219E-14 1.5485E-12 9.7348E-14 -1.1505E-12 1.0943E-12 1.2818E-10 3.4655E-14 9.7348E-14 2.3281E-13 -3.4880E-13 1.2147E-13 1.2297E-11 -3.3801E-13 -1.1505E-12 -3.4880E-13 1.8103E-12 -1.2736E-12 -1.4379E-10 5.4193E-13 1.0943E-12 1.2147E-13 -1.2736E-12 1.7103E-12 1.4155E-10 3.7507E-11 1.2818E-10 1.2297E-11 -1.4379E-10 1.4155E-10 1.6015E-08 # lat0 lon0 xBary yBary zBary JD0 14.831654 -163.624728 0.338785 0.238753 -0.901139 2457099.027758 # Heliocentric elements and errors Epoch: 2457090.5000 = 2015/03/09 Mean Anomaly: 54.85382 +/- 0.309 Argument of Peri: 77.71940 +/- 0.595 Long of Asc Node: 37.84908 +/- 0.002 Inclination: 35.01028 +/- 0.003 Eccentricity: 0.20002873 +/- 0.0087 Semi-Major Axis: 63.17896960 +/- 0.2285 Time of Perihelion: 2429141.7983 +/- 42.0 Perihelion: 50.54136080 +/- 0.5782 Aphelion: 75.81657840 +/- 0.6133 Period (y) 502.1888 +/- 2.72 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -53.84844416 +/- 0.0039 Ecliptic Y -15.46937268 +/- 0.0011 Ecliptic Z 14.58770877 +/- 0.0011 Ecliptic XDOT -0.00015686 +/- 0.0000 Ecliptic YDOT -0.00208275 +/- 0.0000 Ecliptic ZDOT -0.00108458 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 57.89436653 +/- 0.0037 Geocenter to KBO 56.98892470 +/- 0.0042 # Hcoef: 7.88
The following table shows the complete astrometric record for 15FJ345. 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 (15FJ345) followed by the observatory code and reference code for the source of the astrometry.
2015 03 17.52698 13 23 06.241 +07 15 52.00 25.4r 15FJ345 568 C~1u6O 2015 03 17.58309 13 23 06.061 +07 15 53.16 15FJ345 568 C~1u6O 2015 03 17.64176 13 23 05.863 +07 15 54.21 15FJ345 568 C~1u6O 2015 04 18.18881 13 21 17.204 +07 25 23.75 25.5r 15FJ345 304 C~1u6O 2015 04 19.16841 13 21 13.763 +07 25 37.25 15FJ345 304 C~1u6O 2015 04 19.26677 13 21 13.396 +07 25 38.71 15FJ345 304 C~1u6O 2015 06 20.28309 13 18 31.547 +07 26 18.30 25.4r 15FJ345 568 C~1u6O 2015 06 20.37135 13 18 31.436 +07 26 17.10 15FJ345 568 C~1u6O 2016 03 09.34083 13 25 26.155 +06 31 39.28 15FJ345 304 C~1u6O 2016 03 10.25282 13 25 23.520 +06 31 58.60 15FJ345 304 C~1u6O 2016 03 10.30042 13 25 23.365 +06 31 59.51 15FJ345 304 C~1u6O 2016 05 03.21264 13 22 21.336 +06 46 42.94 25.5r 15FJ345 304 C~2AE2 2016 05 03.24815 13 22 21.207 +06 46 43.50 15FJ345 304 C~2AE2
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 0.13 0.00 -0.25
2 0.0002 -2.92 0.14 0.04 -0.25
3 0.0003 -6.04 0.08 -0.12 -0.47
4 0.0867 -1717.34 -0.20 -95.48 0.09
5 0.0894 -1769.79 0.03 -102.65 0.21
6 0.0896 -1775.39 -0.22 -103.40 0.24
7 0.2594 -4014.75 0.05 -989.14 0.34
8 0.2597 -4015.82 -0.01 -990.88 0.30
9 0.9796 2945.01 0.11 -1645.26 -0.04
10 0.9821 2901.32 -0.02 -1642.59 0.06
11 0.9823 2898.83 -0.17 -1642.64 -0.10
12 1.1299 55.47 0.17 -1871.70 -0.15
13 1.1300 53.49 -0.07 -1871.92 0.04
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.
15FJ345 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 62.495 63.194 61.892 ecceobj 0.196 0.221 0.171 incobj 35.139 35.134 35.144 qmin 49.657 48.678 50.748 qmax 76.596 79.108 74.311 amean 62.827 63.527 62.235 amin 62.194 62.903 61.641 amax 63.560 64.259 62.898 emean 0.192 0.218 0.168 emin 0.177 0.205 0.156 emax 0.206 0.231 0.181 imean 34.573 34.561 34.549 imin 34.344 34.333 34.346 imax 34.839 34.829 34.771 excite_mean 0.599 0.608 0.592 fracstop 1.000 1.000 1.000 cjmean 2.814 2.809 2.818 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 179.7 176.4 182.5 kozaiamp 105.6 103.4 107.0