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: 15FK495 # Created Tue Apr 1 01:10:22 2025 # Orbit generated from Bernstein formalism # Fitting 47 observations of 47 # Arc: 62.84d # First observation: 2015/01/16 # Last observation: 2015/03/20 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.031379 -0.000000 0.005717 0.026870 0.000000 # Chi-squared of fit: 15.99 DOF: 88 RMS: 0.10 # Min/Max residuals: -0.24 0.32 # Exact a, adot, b, bdot, g, gdot: 1.829413E-05 3.156716E-02 3.434064E-06 5.708815E-03 2.685625E-02 1.517998E-03 # Covariance matrix: 8.2152E-14 2.0552E-11 1.7830E-14 4.5644E-13 4.4946E-12 2.8135E-10 2.0552E-11 5.3071E-08 4.1093E-11 7.6035E-10 9.7003E-09 2.5442E-07 1.7830E-14 4.1093E-11 7.3820E-14 2.7801E-13 7.5477E-12 2.0647E-10 4.5644E-13 7.6035E-10 2.7801E-13 2.1162E-11 1.4234E-10 4.5363E-09 4.4946E-12 9.7003E-09 7.5477E-12 1.4234E-10 1.7878E-09 5.0355E-08 2.8135E-10 2.5442E-07 2.0647E-10 4.5363E-09 5.0355E-08 2.2457E-06 # lat0 lon0 xBary yBary zBary JD0 -8.687498 151.293398 0.571084 -0.120468 -0.789487 2457039.040018 # Heliocentric elements and errors Epoch: 2457030.5000 = 2015/01/08 Mean Anomaly: 2.80678 +/- 3.799 Argument of Peri: 312.65444 +/- 9.501 Long of Asc Node: 190.14922 +/- 0.224 Inclination: 13.16819 +/- 0.061 Eccentricity: 0.38435341 +/- 0.0208 Semi-Major Axis: 61.65270746 +/- 1.6971 Time of Perihelion: 2455651.9169 +/- 1864.9 Perihelion: 37.95627895 +/- 1.6559 Aphelion: 85.34913597 +/- 2.6777 Period (y) 484.1015 +/- 19.99 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -32.71342972 +/- 0.0508 Ecliptic Y 18.56449893 +/- 0.0278 Ecliptic Z -5.62410460 +/- 0.0089 Ecliptic XDOT -0.00176089 +/- 0.0001 Ecliptic YDOT -0.00271221 +/- 0.0001 Ecliptic ZDOT 0.00055203 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.03208720 +/- 0.0458 Geocenter to KBO 37.23527832 +/- 0.0586 # Hcoef: 9.02
The following table shows the complete astrometric record for 15FK495. 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 (15FK495) followed by the observatory code and reference code for the source of the astrometry.
2015 01 16.53924 10 00 57.99 +02 52 57.2 24.3z 15FK495 T09 C~8iaj 2015 01 16.54315 10 00 57.96 +02 52 57.2 24.4z 15FK495 T09 C~8iaj 2015 01 16.55159 10 00 57.94 +02 52 57.5 24.4z 15FK495 T09 C~8iaj 2015 01 16.55599 10 00 57.92 +02 52 57.5 24.3z 15FK495 T09 C~8iaj 2015 01 16.59163 10 00 57.77 +02 52 58.0 24.2z 15FK495 T09 C~8iaj 2015 01 16.60268 10 00 57.74 +02 52 58.2 24.0z 15FK495 T09 C~8iaj 2015 01 16.62595 10 00 57.64 +02 52 58.5 24.2z 15FK495 T09 C~8iaj 2015 01 16.65856 10 00 57.50 +02 52 59.2 24.7z 15FK495 T09 C~8iaj 2015 01 17.36841 10 00 54.72 +02 53 11.0 24.7i 15FK495 T09 C~8iaj 2015 01 17.37303 10 00 54.70 +02 53 11.0 25.1i 15FK495 T09 C~8iaj 2015 01 17.40063 10 00 54.59 +02 53 11.6 25.0i 15FK495 T09 C~8iaj 2015 01 17.40524 10 00 54.57 +02 53 11.6 24.9i 15FK495 T09 C~8iaj 2015 01 17.41437 10 00 54.53 +02 53 11.6 24.9i 15FK495 T09 C~8iaj 2015 01 17.41902 10 00 54.52 +02 53 11.8 24.8i 15FK495 T09 C~8iaj 2015 01 18.41591 10 00 50.52 +02 53 28.9 24.3y 15FK495 T09 C~8iaj 2015 01 18.43924 10 00 50.44 +02 53 28.9 24.5y 15FK495 T09 C~8iaj 2015 01 18.45938 10 00 50.35 +02 53 29.6 24.5y 15FK495 T09 C~8iaj 2015 01 18.46393 10 00 50.33 +02 53 29.6 24.5y 15FK495 T09 C~8iaj 2015 01 18.51049 10 00 50.12 +02 53 30.4 24.6y 15FK495 T09 C~8iaj 2015 01 18.53842 10 00 50.01 +02 53 31.0 24.2y 15FK495 T09 C~8iaj 2015 01 19.38291 10 00 46.60 +02 53 45.7 24.7z 15FK495 T09 C~8iaj 2015 01 19.38746 10 00 46.57 +02 53 45.9 25.0z 15FK495 T09 C~8iaj 2015 01 19.42888 10 00 46.40 +02 53 46.6 24.7z 15FK495 T09 C~8iaj 2015 01 19.43347 10 00 46.38 +02 53 46.7 24.5z 15FK495 T09 C~8iaj 2015 01 20.42825 10 00 42.28 +02 54 04.7 25.5g 15FK495 T09 C~8iaj 2015 01 20.43306 10 00 42.26 +02 54 04.5 25.8g 15FK495 T09 C~8iaj 2015 01 20.43784 10 00 42.24 +02 54 04.9 25.5g 15FK495 T09 C~8iaj 2015 01 21.56653 10 00 37.52 +02 54 25.9 24.5i 15FK495 T09 C~8iaj 2015 01 21.57101 10 00 37.50 +02 54 26.0 24.3i 15FK495 T09 C~8iaj 2015 01 21.58764 10 00 37.41 +02 54 26.2 24.1i 15FK495 T09 C~8iaj 2015 01 21.60268 10 00 37.35 +02 54 26.7 24.4i 15FK495 T09 C~8iaj 2015 01 21.64723 10 00 37.16 +02 54 27.5 25.0i 15FK495 T09 C~8iaj 2015 01 27.54714 10 00 11.53 +02 56 28.3 24.6y 15FK495 T09 C~8iaj 2015 01 27.55100 10 00 11.50 +02 56 28.4 24.2y 15FK495 T09 C~8iaj 2015 01 27.56783 10 00 11.44 +02 56 28.6 24.8y 15FK495 T09 C~8iaj 2015 01 27.59204 10 00 11.33 +02 56 29.3 24.9y 15FK495 T09 C~8iaj 2015 01 27.59951 10 00 11.30 +02 56 29.4 24.8y 15FK495 T09 C~8iaj 2015 01 27.61446 10 00 11.22 +02 56 29.8 24.5y 15FK495 T09 C~8iaj 2015 01 27.61834 10 00 11.19 +02 56 29.8 24.6y 15FK495 T09 C~8iaj 2015 01 27.62950 10 00 11.16 +02 56 29.8 25.0y 15FK495 T09 C~8iaj 2015 03 18.39076 09 56 19.48 +03 20 56.0 24.8r 15FK495 T09 C~8iaj 2015 03 18.41164 09 56 19.41 +03 20 56.6 24.6r 15FK495 T09 C~8iaj 2015 03 18.42974 09 56 19.33 +03 20 57.1 24.5r 15FK495 T09 C~8iaj 2015 03 18.44789 09 56 19.26 +03 20 57.7 24.7r 15FK495 T09 C~8iaj 2015 03 20.33757 09 56 11.72 +03 21 58.8 24.4i 15FK495 T09 C~8iaj 2015 03 20.35412 09 56 11.66 +03 21 59.5 24.7i 15FK495 T09 C~8iaj 2015 03 20.38334 09 56 11.54 +03 22 00.7 25.4i 15FK495 T09 C~8iaj
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 -0.02
2 0.0000 -0.42 -0.12 -0.16 -0.15
3 0.0000 -0.81 0.02 0.02 0.08
4 0.0000 -1.09 0.01 -0.09 -0.00
5 0.0001 -3.37 -0.05 -0.40 -0.11
6 0.0002 -3.86 0.14 -0.37 -0.02
7 0.0002 -5.37 0.08 -0.61 -0.13
8 0.0003 -7.58 -0.11 -0.69 -0.02
9 0.0023 -50.72 -0.05 -4.18 0.07
10 0.0023 -51.00 -0.04 -4.29 -0.01
11 0.0024 -52.76 -0.07 -4.30 0.12
12 0.0024 -53.04 -0.06 -4.40 0.04
13 0.0024 -53.60 -0.05 -4.61 -0.12
14 0.0024 -53.81 0.04 -4.48 0.04
15 0.0051 -115.93 -0.04 -9.39 0.14
16 0.0052 -117.05 0.32 -9.81 -0.16
17 0.0053 -118.56 0.10 -9.62 0.13
18 0.0053 -118.84 0.11 -9.73 0.05
19 0.0054 -122.07 -0.13 -10.08 -0.05
20 0.0055 -123.82 -0.09 -10.09 0.09
21 0.0078 -176.83 0.14 -14.16 0.01
22 0.0078 -177.32 -0.05 -14.13 0.07
23 0.0079 -179.95 -0.01 -14.36 0.04
24 0.0079 -180.26 -0.02 -14.37 0.05
25 0.0106 -244.10 -0.03 -18.96 0.03
26 0.0107 -244.31 0.08 -19.25 -0.24
27 0.0107 -244.73 -0.03 -18.98 0.06
28 0.0138 -318.33 0.09 -24.00 0.02
29 0.0138 -318.64 0.07 -24.01 0.03
30 0.0138 -319.97 -0.15 -24.30 -0.17
31 0.0139 -320.99 -0.16 -24.14 0.05
32 0.0140 -323.94 -0.13 -24.38 0.02
33 0.0301 -725.90 0.01 -45.27 0.07
34 0.0301 -726.36 -0.17 -45.33 0.02
35 0.0302 -727.27 0.12 -45.46 -0.05
36 0.0303 -729.06 0.07 -45.38 0.11
37 0.0303 -729.52 0.15 -45.44 0.07
38 0.0303 -730.78 -0.05 -45.49 0.08
39 0.0303 -731.20 -0.19 -45.64 -0.07
40 0.0304 -731.62 0.18 -45.80 -0.19
41 0.1666 -4495.76 -0.24 118.26 0.02
42 0.1667 -4496.96 0.02 118.45 0.04
43 0.1667 -4498.25 -0.02 118.50 -0.07
44 0.1668 -4499.45 0.05 118.70 -0.04
45 0.1719 -4626.63 0.07 136.66 -0.19
46 0.1720 -4627.71 0.11 137.00 -0.00
47 0.1721 -4629.82 -0.01 137.50 0.23
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.
15FK495 quality flag:1 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 61.064 70.904 56.368 ecceobj 0.378 0.486 0.322 incobj 13.194 13.013 13.391 qmin 37.212 35.321 37.272 qmax 86.027 108.502 76.461 amean 61.015 70.798 56.432 amin 60.332 69.631 55.818 amax 61.913 72.290 57.177 emean 0.376 0.487 0.324 emin 0.364 0.474 0.312 emax 0.390 0.502 0.338 imean 13.267 12.506 13.186 imin 12.691 11.648 12.589 imax 13.873 13.496 13.726 excite_mean 0.441 0.533 0.397 fracstop 1.000 1.000 1.000 cjmean 3.061 3.039 3.055 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 178.7 185.1 167.4 kozaiamp 179.9 180.0 180.0