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: 14WD556 # Created Wed Dec 25 02:10:08 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 27 observations of 27 # Arc: 5.91y # First observation: 2014/11/21 # Last observation: 2020/10/20 # Chi-squared of fit: 8.80 DOF: 48 RMS: 0.10 # Min/Max residuals: -0.28 0.31 # Exact a, adot, b, bdot, g, gdot: 2.193010E-05 4.415088E-02 -1.491800E-06 -3.238754E-03 3.176482E-02 -4.706482E-03 # Covariance matrix: 1.7052E-13 -8.9877E-14 -1.7082E-14 8.9492E-15 6.6254E-14 -2.0507E-13 -8.9877E-14 1.1374E-13 8.3985E-16 -7.1309E-15 3.0593E-14 4.2115E-13 -1.7082E-14 8.3985E-16 1.7113E-13 -4.6579E-14 -1.9222E-13 -6.5219E-14 8.9492E-15 -7.1309E-15 -4.6579E-14 1.9346E-14 5.5394E-14 -9.9372E-15 6.6254E-14 3.0593E-14 -1.9222E-13 5.5394E-14 9.7477E-13 4.7610E-13 -2.0507E-13 4.2115E-13 -6.5219E-14 -9.9372E-15 4.7610E-13 1.9267E-12 # lat0 lon0 xBary yBary zBary JD0 -31.038969 -4.511400 -0.879769 -0.232249 -0.386305 2456982.644298 # Heliocentric elements and errors Epoch: 2456982.5000 = 2014/11/21 Mean Anomaly: 357.35877 +/- 0.002 Argument of Peri: 276.95430 +/- 0.005 Long of Asc Node: 93.66670 +/- 0.000 Inclination: 30.76498 +/- 0.000 Eccentricity: 0.58582931 +/- 0.0001 Semi-Major Axis: 76.30503252 +/- 0.0296 Time of Perihelion: 2458768.7071 +/- 140.8 Perihelion: 31.60330770 +/- 0.0167 Aphelion: 121.00675734 +/- 0.0484 Period (y) 666.5580 +/- 0.39 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 27.40609612 +/- 0.0008 Ecliptic Y -1.27834369 +/- 0.0001 Ecliptic Z -16.23255101 +/- 0.0005 Ecliptic XDOT -0.00019491 +/- 0.0000 Ecliptic YDOT 0.00382730 +/- 0.0000 Ecliptic ZDOT -0.00002992 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 31.87832351 +/- 0.0008 Geocenter to KBO 31.48148770 +/- 0.0010 # Hcoef: 8.21
The following table shows the complete astrometric record for 14WD556. 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 (14WD556) followed by the observatory code and reference code for the source of the astrometry.
2014 11 21.14352 00 38 05.18 -29 59 31.7 23.3r 14WD556 W84 C~3cpT 2014 12 12.08049 00 37 16.763 -29 43 43.36 22.6i 14WD556 W84 C~4yVK 2014 12 12.08188 00 37 16.770 -29 43 43.38 23.8g 14WD556 W84 C~4yVK 2014 12 12.08328 00 37 16.762 -29 43 43.26 23.6r 14WD556 W84 C~4yVL 2014 12 15.07389 00 37 14.386 -29 40 51.22 23.2r 14WD556 W84 C~4yVL 2014 12 15.07525 00 37 14.379 -29 40 51.13 24.2g 14WD556 W84 C~4yVL 2014 12 16.07017 00 37 13.858 -29 39 52.13 22.9i 14WD556 W84 C~4yVL 2014 12 22.09772 00 37 13.534 -29 33 36.47 23.1i 14WD556 W84 C~4yVL 2014 12 25.04869 00 37 15.168 -29 30 22.14 22.4z 14WD556 W84 C~4yVL 2015 12 04.05167 00 48 07.372 -28 50 06.05 23.7g 14WD556 W84 C~4yVL 2016 11 04.10306 01 00 40.992 -27 58 16.20 23.5r 14WD556 W84 C~4yVL 2016 11 05.24918 01 00 34.744 -27 58 07.06 22.6i 14WD556 W84 C~4yVL 2016 12 07.15379 00 58 27.244 -27 42 48.25 22.4z 14WD556 W84 C~4yVL 2016 12 23.07732 00 58 06.836 -27 28 01.37 23.5r 14WD556 W84 C~4yVL 2016 12 23.07869 00 58 06.826 -27 28 01.24 23.3i 14WD556 W84 C~4yVL 2017 11 17.16573 01 10 02.055 -26 46 30.84 23.9r 14WD556 W84 C~4yVL 2017 11 26.04449 01 09 23.795 -26 42 34.94 23.8i 14WD556 W84 C~4yVL 2017 12 11.14339 01 08 37.677 -26 32 16.12 22.9r 14WD556 W84 C~4yVL 2017 12 11.14475 01 08 37.663 -26 32 16.11 24.3g 14WD556 W84 C~4yVL 2018 10 01.34842 01 24 55.710 -25 26 09.08 22.8z 14WD556 W84 C~4yVL 2018 10 01.34979 01 24 55.697 -25 26 09.03 23.4i 14WD556 W84 C~4yVL 2018 10 27.19323 01 22 16.138 -25 36 30.53 22.9z 14WD556 W84 C~4yVL 2018 11 16.05291 01 20 24.220 -25 35 18.05 23.4i 14WD556 W84 C~4yVL 2018 11 29.14311 01 19 25.693 -25 29 54.22 23.2r 14WD556 W84 C~4yVL 2018 11 29.14449 01 19 25.688 -25 29 54.19 23.5g 14WD556 W84 C~4yVL 2020 10 20.264060 01 42 59.902 -23 01 14.91 23.1G 14WD556 G37 C~4Kxw 2020 10 20.317310 01 42 59.599 -23 01 16.12 14WD556 G37 C~4Kxw
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 0.02 0.00 -0.02
2 0.0573 0.00 -0.13 0.00 0.03
3 0.0573 0.00 0.00 0.00 -0.07
4 0.0573 0.00 -0.09 0.00 -0.02
5 0.0655 0.00 0.03 0.00 0.00
6 0.0655 0.00 -0.06 0.00 0.01
7 0.0682 0.00 0.05 0.00 -0.01
8 0.0847 0.00 0.23 0.00 0.02
9 0.0928 0.00 -0.10 0.00 -0.02
10 1.0347 0.00 0.18 0.00 0.31
11 1.9547 0.00 0.07 0.00 -0.03
12 1.9579 0.00 0.03 0.00 -0.02
13 2.0452 0.00 0.06 0.00 -0.03
14 2.0888 0.00 0.01 0.00 -0.01
15 2.0888 0.00 -0.14 0.00 0.04
16 2.9898 0.00 -0.03 0.00 -0.00
17 3.0141 0.00 -0.09 0.00 -0.20
18 3.0554 0.00 0.07 0.00 0.06
19 3.0554 0.00 -0.09 0.00 0.01
20 3.8609 0.00 -0.04 0.00 -0.04
21 3.8609 0.00 -0.11 0.00 0.06
22 3.9317 0.00 0.18 0.00 -0.05
23 3.9861 0.00 0.13 0.00 -0.07
24 4.0219 0.00 0.02 0.00 0.00
25 4.0219 0.00 0.03 0.00 -0.01
26 5.9141 0.00 -0.28 0.00 0.09
27 5.9142 0.00 0.22 0.00 0.01
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.
14WD556 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 77.855 77.854 77.856 ecceobj 0.594 0.594 0.594 incobj 30.781 30.781 30.781 qmin 30.825 30.839 30.949 qmax 128.010 126.550 126.268 amean 77.222 77.047 77.043 amin 75.605 75.547 75.504 amax 80.638 80.019 79.091 emean 0.580 0.579 0.578 emin 0.557 0.556 0.554 emax 0.599 0.599 0.600 imean 30.198 30.109 30.220 imin 29.060 28.899 29.091 imax 31.474 31.492 31.597 excite_mean 0.768 0.766 0.766 fracstop 1.000 1.000 1.000 cjmean 2.645 2.647 2.647 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 162.7 161.0 161.6 kozaiamp 180.0 180.0 180.0