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: 14YW91 # Created Sun Dec 22 02:10:14 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 45 observations of 45 # Arc: 5.94y # First observation: 2013/10/27 # Last observation: 2019/10/04 # Chi-squared of fit: 18.58 DOF: 84 RMS: 0.11 # Min/Max residuals: -0.27 0.34 # Exact a, adot, b, bdot, g, gdot: 1.342415E-05 2.489448E-02 -5.601287E-06 -8.901674E-03 2.613460E-02 -4.133245E-03 # Covariance matrix: 6.0686E-13 -3.0039E-13 -1.2838E-13 8.6874E-14 -5.0384E-14 -1.2356E-12 -3.0039E-13 1.8324E-13 8.5874E-14 -5.9200E-14 5.7367E-14 8.4700E-13 -1.2838E-13 8.5874E-14 2.6313E-13 -7.2573E-14 2.1807E-14 4.1585E-13 8.6874E-14 -5.9200E-14 -7.2573E-14 3.0345E-14 -2.5574E-14 -2.9291E-13 -5.0384E-14 5.7367E-14 2.1807E-14 -2.5574E-14 2.4338E-13 4.1308E-13 -1.2356E-12 8.4700E-13 4.1585E-13 -2.9291E-13 4.1308E-13 4.2187E-12 # lat0 lon0 xBary yBary zBary JD0 -14.614035 20.381858 -0.225908 -0.243864 -0.935746 2456592.627628 # Heliocentric elements and errors Epoch: 2456592.5000 = 2013/10/27 Mean Anomaly: 294.31572 +/- 0.015 Argument of Peri: 300.67247 +/- 0.021 Long of Asc Node: 165.97405 +/- 0.000 Inclination: 24.02583 +/- 0.000 Eccentricity: 0.15885383 +/- 0.0001 Semi-Major Axis: 40.94424993 +/- 0.0033 Time of Perihelion: 2474052.5997 +/- 10.3 Perihelion: 34.44009882 +/- 0.0043 Aphelion: 47.44840105 +/- 0.0050 Period (y) 261.9978 +/- 0.03 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.53441486 +/- 0.0007 Ecliptic Y 13.44649143 +/- 0.0002 Ecliptic Z -9.65435768 +/- 0.0002 Ecliptic XDOT -0.00152776 +/- 0.0000 Ecliptic YDOT 0.00221521 +/- 0.0000 Ecliptic ZDOT -0.00079298 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 39.20097974 +/- 0.0006 Geocenter to KBO 38.26358838 +/- 0.0007 # Hcoef: 7.68
The following table shows the complete astrometric record for 14YW91. 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 (14YW91) followed by the observatory code and reference code for the source of the astrometry.
2013 10 27.12685 01 37 12.057 -05 35 28.86 24.1g 14YW91 W84 C~52Uq 2014 12 16.14065 01 40 08.682 -05 42 09.00 23.0i 14YW91 W84 C~52Uq 2014 12 25.09642 01 39 52.826 -05 40 57.33 23.3r 14YW91 W84 C~52Uq 2014 12 25.09779 01 39 52.845 -05 40 56.97 23.4i 14YW91 W84 C~52Uq 2015 08 18.41466 01 53 48.791 -04 44 17.84 23.1r 14YW91 W84 C~52Uq 2015 10 17.21199 01 50 18.095 -05 22 20.94 23.6r 14YW91 W84 C~52Uq 2015 11 16.14155 01 47 56.465 -05 35 14.45 23.3r 14YW91 W84 C~52Uq 2015 11 16.14430 01 47 56.457 -05 35 14.45 24.1g 14YW91 W84 C~52Uq 2016 09 28.43116 01 57 53.32 -05 07 02.4 24.0g 14YW91 568 C~2eAJ 2016 09 28.55086 01 57 52.79 -05 07 07.1 24.0g 14YW91 568 C~2eAJ 2016 09 29.44269 01 57 48.95 -05 07 41.8 24.0g 14YW91 568 C~2eAJ 2016 09 29.56239 01 57 48.42 -05 07 46.5 24.0g 14YW91 568 C~2eAJ 2016 10 22.19607 01 56 02.023 -05 21 10.87 22.9r 14YW91 W84 C~52Uq 2016 10 22.19744 01 56 02.004 -05 21 10.65 23.3i 14YW91 W84 C~52Uq 2016 10 22.20196 01 56 02.013 -05 21 10.87 24.0g 14YW91 W84 C~52Uq 2016 12 06.05834 01 52 46.340 -05 34 34.04 23.3z 14YW91 W84 C~52Uq 2017 09 18.38916 02 04 48.362 -04 55 33.24 22.7i 14YW91 W84 C~52Uq 2017 09 26.28827 02 04 17.530 -05 00 50.25 23.4r 14YW91 W84 C~52Uq 2017 09 26.28964 02 04 17.518 -05 00 50.29 23.8g 14YW91 W84 C~52Uq 2017 11 27.14500 01 59 30.846 -05 29 20.41 22.9i 14YW91 W84 C~52Uq 2017 12 07.11748 01 58 54.452 -05 30 18.41 24.0r 14YW91 W84 C~52Uq 2017 12 14.06076 01 58 33.290 -05 30 15.65 24.2g 14YW91 W84 C~52Uq 2018 01 05.07979 01 57 53.926 -05 26 15.33 22.6z 14YW91 W84 C~52Uq 2019 09 27.34564 02 16 52.17 -04 51 02.9 24.1g 14YW91 T09 C~7bKR 2019 09 27.43590 02 16 51.80 -04 51 06.6 24.2g 14YW91 T09 C~7bKR 2019 09 27.53109 02 16 51.41 -04 51 10.3 24.1g 14YW91 T09 C~7bKR 2019 09 27.60019 02 16 51.12 -04 51 13.2 23.7g 14YW91 T09 C~7bKR 2019 09 29.43478 02 16 43.62 -04 52 26.3 24.0r 14YW91 T09 C~7xPm 2019 09 29.44605 02 16 43.58 -04 52 26.6 23.8r 14YW91 T09 C~7xPm 2019 09 29.45729 02 16 43.52 -04 52 27.3 23.8r 14YW91 T09 C~7xPm 2019 09 29.46854 02 16 43.48 -04 52 27.6 23.8r 14YW91 T09 C~7xPm 2019 09 29.49845 02 16 43.35 -04 52 28.9 23.3i 14YW91 T09 C~7xPm 2019 09 29.55335 02 16 43.11 -04 52 31.0 23.6i 14YW91 T09 C~7xPm 2019 09 29.62059 02 16 42.83 -04 52 33.8 23.7z 14YW91 T09 C~7xPm 2019 10 04.59083 02 16 21.55 -04 55 48.3 23.5z 14YW91 T09 C~8MXm 2019 10 04.59849 02 16 21.52 -04 55 48.8 23.3z 14YW91 T09 C~8MXm 2019 10 04.60232 02 16 21.49 -04 55 49.0 23.2z 14YW91 T09 C~8MXm 2019 10 04.60615 02 16 21.49 -04 55 49.3 23.4z 14YW91 T09 C~8MXm 2019 10 04.60998 02 16 21.46 -04 55 49.3 23.3z 14YW91 T09 C~8MXm 2019 10 04.61764 02 16 21.43 -04 55 49.7 23.4z 14YW91 T09 C~8MXm 2019 10 04.62147 02 16 21.42 -04 55 49.7 23.4z 14YW91 T09 C~8MXm 2019 10 04.62530 02 16 21.39 -04 55 49.7 23.3z 14YW91 T09 C~8MXm 2019 10 04.62913 02 16 21.38 -04 55 50.0 23.3z 14YW91 T09 C~8MXm 2019 10 04.63296 02 16 21.36 -04 55 50.3 23.8z 14YW91 T09 C~8MXm 2019 10 04.64061 02 16 21.33 -04 55 50.7 23.3z 14YW91 T09 C~8MXm
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 0.30 0.00 0.17
2 1.1362 0.00 -0.27 0.00 0.11
3 1.1608 0.00 -0.25 0.00 -0.16
4 1.1608 0.00 0.07 0.00 0.19
5 1.8078 0.00 -0.14 0.00 -0.20
6 1.9715 0.00 0.17 0.00 0.11
7 2.0534 0.00 -0.10 0.00 -0.06
8 2.0534 0.00 -0.04 0.00 -0.02
9 2.9221 0.00 -0.05 0.00 0.03
10 2.9224 0.00 -0.12 0.00 0.00
11 2.9249 0.00 -0.01 0.00 0.03
12 2.9252 0.00 0.01 0.00 -0.02
13 2.9872 0.00 0.05 0.00 -0.17
14 2.9872 0.00 -0.13 0.00 0.09
15 2.9872 0.00 0.34 0.00 0.01
16 3.1100 0.00 0.10 0.00 0.00
17 3.8939 0.00 -0.01 0.00 -0.05
18 3.9156 0.00 0.13 0.00 -0.06
19 3.9156 0.00 0.04 0.00 -0.05
20 4.0849 0.00 0.10 0.00 -0.07
21 4.1122 0.00 0.06 0.00 0.01
22 4.1312 0.00 -0.16 0.00 -0.09
23 4.1915 0.00 0.15 0.00 -0.03
24 5.9171 0.00 0.06 0.00 0.07
25 5.9173 0.00 0.06 0.00 -0.01
26 5.9176 0.00 0.10 0.00 0.10
27 5.9178 0.00 0.03 0.00 -0.03
28 5.9228 0.00 -0.02 0.00 0.03
29 5.9228 0.00 0.09 0.00 0.18
30 5.9229 0.00 -0.09 0.00 -0.07
31 5.9229 0.00 0.02 0.00 0.07
32 5.9230 0.00 -0.03 0.00 -0.04
33 5.9231 0.00 -0.13 0.00 0.04
34 5.9233 0.00 -0.06 0.00 -0.09
35 5.9369 0.00 -0.01 0.00 0.26
36 5.9370 0.00 0.06 0.00 0.06
37 5.9370 0.00 -0.14 0.00 0.00
38 5.9370 0.00 0.12 0.00 -0.15
39 5.9370 0.00 -0.07 0.00 0.00
40 5.9370 0.00 -0.01 0.00 -0.10
41 5.9370 0.00 0.10 0.00 0.04
42 5.9370 0.00 -0.10 0.00 0.19
43 5.9370 0.00 0.01 0.00 0.04
44 5.9370 0.00 -0.03 0.00 -0.11
45 5.9371 0.00 0.03 0.00 -0.22
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.
14YW91 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.128 41.128 41.128 ecceobj 0.157 0.157 0.157 incobj 23.956 23.956 23.956 qmin 33.643 33.684 33.676 qmax 48.484 48.358 48.411 amean 40.865 40.843 40.881 amin 40.489 40.481 40.521 amax 41.302 41.237 41.297 emean 0.154 0.153 0.153 emin 0.134 0.133 0.134 emax 0.175 0.173 0.174 imean 23.602 23.583 23.628 imin 22.930 22.925 22.931 imax 24.356 24.328 24.341 excite_mean 0.429 0.428 0.429 fracstop 1.000 1.000 1.000 cjmean 2.847 2.848 2.847 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 175.3 175.3 176.1 kozaiamp 179.9 180.0 180.0