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: 15FN496 # Created Sun Apr 27 01:10:23 2025 # Orbit generated from Bernstein formalism # Fitting 23 observations of 23 # Arc: 1.15y # First observation: 2015/01/16 # Last observation: 2016/03/12 Preliminary a, adot, b, bdot, g, gdot: -0.000013 0.024694 -0.000008 -0.015249 0.026451 0.000000 # Chi-squared of fit: 12.16 DOF: 40 RMS: 0.13 # Min/Max residuals: -0.36 0.26 # Exact a, adot, b, bdot, g, gdot: 1.380644E-05 2.483454E-02 -1.019059E-05 -1.539240E-02 2.659782E-02 7.602172E-03 # Covariance matrix: 1.7766E-13 1.4171E-13 1.7723E-14 -3.0758E-13 2.7712E-13 1.7009E-11 1.4171E-13 4.0690E-12 4.5793E-13 -7.2718E-12 2.6089E-12 4.0329E-10 1.7723E-14 4.5793E-13 1.5834E-13 -1.0149E-12 2.9512E-13 5.0614E-11 -3.0758E-13 -7.2718E-12 -1.0149E-12 1.4710E-11 -4.7327E-12 -7.9988E-10 2.7712E-13 2.6089E-12 2.9512E-13 -4.7327E-12 1.9932E-12 2.6238E-10 1.7009E-11 4.0329E-10 5.0614E-11 -7.9988E-10 2.6238E-10 4.4368E-08 # lat0 lon0 xBary yBary zBary JD0 -16.154313 139.715497 0.400487 -0.249243 -0.861067 2457038.959318 # Heliocentric elements and errors Epoch: 2457030.5000 = 2015/01/08 Mean Anomaly: 28.41315 +/- 0.303 Argument of Peri: 150.77552 +/- 0.715 Long of Asc Node: 295.49303 +/- 0.004 Inclination: 35.21392 +/- 0.004 Eccentricity: 0.34761476 +/- 0.0074 Semi-Major Axis: 51.95152638 +/- 0.3152 Time of Perihelion: 2446235.7441 +/- 59.9 Perihelion: 33.89240901 +/- 0.4346 Aphelion: 70.01064376 +/- 0.5719 Period (y) 374.4602 +/- 3.41 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -27.97626301 +/- 0.0015 Ecliptic Y 24.23521741 +/- 0.0012 Ecliptic Z -10.46085084 +/- 0.0006 Ecliptic XDOT -0.00189387 +/- 0.0000 Ecliptic YDOT -0.00175447 +/- 0.0000 Ecliptic ZDOT -0.00173948 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.46357309 +/- 0.0013 Geocenter to KBO 37.59706130 +/- 0.0020 # Hcoef: 8.58
The following table shows the complete astrometric record for 15FN496. 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 (15FN496) followed by the observatory code and reference code for the source of the astrometry.
2015 01 16.45854 09 08 28.14 -00 28 16.7 24.2z 15FN496 T09 C~8nc2 2015 01 16.49318 09 08 27.94 -00 28 16.7 23.7z 15FN496 T09 C~8nc2 2015 01 16.50404 09 08 27.88 -00 28 16.7 24.0z 15FN496 T09 C~8nc2 2015 01 16.51495 09 08 27.84 -00 28 16.7 24.3z 15FN496 T09 C~8nc2 2015 01 21.43754 09 08 02.49 -00 27 51.2 24.0i 15FN496 T09 C~8nc2 2015 01 21.48977 09 08 02.21 -00 27 51.0 23.8i 15FN496 T09 C~8nc2 2015 01 21.52648 09 08 02.01 -00 27 50.7 24.3i 15FN496 T09 C~8nc2 2015 01 27.39521 09 07 30.98 -00 27 01.7 23.8y 15FN496 T09 C~8nc2 2015 01 27.45286 09 07 30.66 -00 27 01.2 23.7y 15FN496 T09 C~8nc2 2015 01 27.52703 09 07 30.25 -00 27 00.7 23.7y 15FN496 T09 C~8nc2 2015 03 18.32647 09 03 26.31 -00 10 33.8 24.6r 15FN496 T09 C~8nc2 2015 03 18.34385 09 03 26.25 -00 10 33.1 24.8r 15FN496 T09 C~8nc2 2015 03 18.35901 09 03 26.19 -00 10 33.0 24.8r 15FN496 T09 C~8nc2 2015 03 18.36116 09 03 26.18 -00 10 33.0 25.0r 15FN496 T09 C~8nc2 2015 03 25.39368 09 03 02.07 -00 07 36.4 25.2g 15FN496 T09 C~8nc2 2015 03 25.40864 09 03 02.03 -00 07 35.7 25.6g 15FN496 T09 C~8nc2 2015 03 25.41932 09 03 01.99 -00 07 35.7 25.0g 15FN496 T09 C~8nc2 2016 03 04.30541 09 08 43.05 -01 31 54.3 24.4i 15FN496 T09 C~8nc2 2016 03 04.32261 09 08 42.98 -01 31 54.0 24.1i 15FN496 T09 C~8nc2 2016 03 12.23749 09 08 08.44 -01 28 34.3 24.2z 15FN496 T09 C~8nc2 2016 03 12.24703 09 08 08.38 -01 28 34.1 24.3z 15FN496 T09 C~8nc2 2016 03 12.27134 09 08 08.30 -01 28 33.5 23.9z 15FN496 T09 C~8nc2 2016 03 12.28216 09 08 08.28 -01 28 33.0 24.6z 15FN496 T09 C~8nc2
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 0.20 0.00 0.21
2 0.0001 -2.86 -0.07 -0.91 -0.00
3 0.0001 -3.72 -0.11 -1.18 -0.06
4 0.0002 -4.29 0.13 -1.37 -0.02
5 0.0136 -374.33 -0.05 -92.45 0.15
6 0.0138 -378.40 -0.04 -93.54 0.00
7 0.0139 -381.35 -0.12 -94.16 0.04
8 0.0299 -839.70 0.07 -188.72 0.09
9 0.0301 -844.43 -0.00 -189.70 -0.01
10 0.0303 -850.44 -0.03 -191.09 -0.28
11 0.1666 -4637.19 -0.06 -361.45 -0.08
12 0.1667 -4638.26 -0.06 -361.06 0.20
13 0.1667 -4639.15 -0.01 -361.24 -0.08
14 0.1667 -4639.29 -0.02 -361.28 -0.14
15 0.1860 -5037.70 0.04 -302.79 -0.16
16 0.1860 -5038.49 0.06 -302.31 0.19
17 0.1861 -5039.06 0.06 -302.49 -0.09
18 1.1303 1371.66 0.02 -3570.15 0.04
19 1.1304 1370.56 0.21 -3570.18 -0.03
20 1.1520 816.37 -0.09 -3537.03 -0.01
21 1.1521 815.45 -0.36 -3537.11 -0.15
22 1.1521 814.12 -0.04 -3536.91 -0.07
23 1.1522 813.68 0.26 -3536.52 0.25
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.
15FN496 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 51.802 52.802 50.892 ecceobj 0.348 0.369 0.327 incobj 35.254 35.266 35.241 qmin 31.780 31.604 32.558 qmax 72.792 74.613 69.537 amean 51.846 52.501 50.659 amin 51.059 51.683 50.149 amax 52.542 53.332 51.303 emean 0.360 0.369 0.333 emin 0.327 0.346 0.310 emax 0.386 0.399 0.356 imean 36.405 36.686 36.515 imin 35.673 35.883 35.888 imax 37.378 37.400 37.239 excite_mean 0.694 0.702 0.682 fracstop 1.000 1.000 1.000 cjmean 2.550 2.541 2.559 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 197.1 178.1 182.6 kozaiamp 180.0 180.0 180.0