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: 581804
# Created Sat Apr 27 01:09:01 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 49 observations of 49
# Arc: 3.87y
# First observation: 2014/05/29
# Last observation: 2018/04/11
# Chi-squared of fit: 16.27 DOF: 92 RMS: 0.10
# Min/Max residuals: -0.31 0.35
# Exact a, adot, b, bdot, g, gdot:
1.752046E-05 2.627602E-02 -1.378645E-06 -1.472968E-03 2.517377E-02 3.919816E-03
# Covariance matrix:
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
# lat0 lon0 xBary yBary zBary JD0
5.222572 -126.866316 -0.258108 0.089368 -0.977128 2456806.882768
# Heliocentric elements and errors
Epoch: 2456806.5000 = 2014/05/29
Mean Anomaly: 36.74918 +/- 0.000
Argument of Peri: 67.10695 +/- 0.000
Long of Asc Node: 111.02519 +/- 0.000
Inclination: 6.03481 +/- 0.000
Eccentricity: 0.21565683 +/- 0.0000
Semi-Major Axis: 47.93806784 +/- 0.0000
Time of Perihelion: 2444430.9542 +/- 0.0
Perihelion: 37.59989608 +/- 0.0000
Aphelion: 58.27623959 +/- 0.0000
Period (y) 331.9166 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -24.11685832 +/- 0.0000
Ecliptic Y -32.58711438 +/- 0.0000
Ecliptic Z 3.61586688 +/- 0.0000
Ecliptic XDOT 0.00201758 +/- 0.0000
Ecliptic YDOT -0.00206945 +/- 0.0000
Ecliptic ZDOT -0.00012060 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.70146169 +/- 0.0000
Geocenter to KBO 39.72382383 +/- 0.0000
# Hcoef: 8.27
The following table shows the complete astrometric record for 581804. 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 (581804) followed by the observatory code and reference code for the source of the astrometry.
2014 05 29.38199 15 28 21.482 -13 29 50.76 24.0r 581804 568 C~2WaY 2014 05 29.42085 15 28 21.300 -13 29 50.36 24.6r 581804 568 C~2WaY 2014 05 29.45970 15 28 21.124 -13 29 49.89 24.0r 581804 568 C~2WaY 2014 05 30.48958 15 28 16.235 -13 29 34.87 24.2r 581804 568 C~2WaY 2014 05 31.40597 15 28 11.946 -13 29 21.79 24.4r 581804 568 C~2WaY 2014 06 21.38515 15 26 42.064 -13 25 22.25 24.3r 581804 568 C~2WaY 2014 06 21.42426 15 26 41.914 -13 25 21.86 24.6r 581804 568 C~2WaY 2014 07 19.30175 15 25 24.403 -13 23 47.72 24.0r 581804 568 C~2WaY 2014 07 19.31792 15 25 24.367 -13 23 47.69 24.7r 581804 568 C~2WaY 2015 02 20.65667 15 39 26.510 -14 20 04.78 24.8r 581804 568 C~2WaY 2015 03 19.57074 15 39 05.984 -14 15 55.05 24.0r 581804 568 C~2WaY 2015 03 21.62951 15 39 01.582 -14 15 27.94 24.2r 581804 568 C~2WaY 2015 04 18.51079 15 37 30.053 -14 08 05.38 24.1r 581804 568 C~2WaY 2015 05 17.38343 15 35 15.410 -13 59 43.21 24.4r 581804 568 C~2WaY 2015 05 17.42514 15 35 15.205 -13 59 42.35 23.9r 581804 568 C~2WaY 2015 05 17.46733 15 35 14.979 -13 59 41.64 24.3r 581804 568 C~2WaY 2015 05 24.36911 15 34 41.195 -13 57 52.15 24.3r 581804 568 C~2WaY 2015 05 24.41533 15 34 40.967 -13 57 51.44 24.4r 581804 568 C~2WaY 2015 05 24.45620 15 34 40.758 -13 57 50.73 24.3r 581804 568 C~2WaY 2015 05 26.44379 15 34 31.115 -13 57 20.77 24.0r 581804 568 C~2WaY 2015 06 18.34328 15 32 47.956 -13 52 37.61 24.3r 581804 568 C~2WaY 2015 06 18.38434 15 32 47.784 -13 52 37.20 24.2r 581804 568 C~2WaY 2015 06 21.35896 15 32 36.026 -13 52 10.72 24.5r 581804 568 C~2WaY 2015 07 10.39102 15 31 34.198 -13 50 29.69 24.8r 581804 568 C~2WaY 2015 07 18.31678 15 31 16.455 -13 50 25.02 24.5r 581804 568 C~2WaY 2016 02 06.62508 15 44 51.472 -14 45 26.89 24.5w 581804 568 C~2WaY 2016 02 12.61062 15 45 02.603 -14 45 23.30 24.6w 581804 568 C~2WaY 2016 03 15.61859 15 45 00.801 -14 41 44.58 24.5w 581804 568 C~2WaY 2016 04 03.55474 15 44 14.483 -14 37 29.19 24.6w 581804 568 C~2WaY 2016 04 08.60428 15 43 57.384 -14 36 10.70 24.7w 581804 568 C~2WaY 2016 04 29.47779 15 42 31.072 -14 30 22.40 24.7w 581804 568 C~2WaY 2016 05 04.41287 15 42 08.009 -14 28 58.71 24.3w 581804 568 C~2WaY 2016 05 30.47415 15 40 01.375 -14 22 11.71 24.1w 581804 568 C~2WaY 2016 07 04.29413 15 37 39.581 -14 16 47.78 24.6w 581804 568 C~2WaY 2016 07 05.36242 15 37 36.328 -14 16 43.64 24.6w 581804 568 C~2WaY 2017 07 28.31194 15 42 35.603 -14 41 58.69 581804 568 C~2WaY 2017 08 19.27024 15 42 31.027 -14 44 41.05 24.7w 581804 568 C~2WaY 2017 08 25.27821 15 42 37.822 -14 45 52.90 25.0w 581804 568 C~2WaY 2017 08 26.25868 15 42 39.246 -14 46 05.88 24.7w 581804 568 C~2WaY 2018 04 11.40072 15 55 28.128 -15 24 17.85 24.6r 581804 G83 C~4u1R 2018 04 11.40895 15 55 28.093 -15 24 17.57 24.3r 581804 G83 C~4u1R 2018 04 11.41732 15 55 28.066 -15 24 17.55 24.4r 581804 G83 C~4u1R 2018 04 11.42569 15 55 28.037 -15 24 17.37 24.5r 581804 G83 C~4u1R 2018 04 11.43696 15 55 27.994 -15 24 17.30 24.3r 581804 G83 C~4u1R 2018 04 11.44533 15 55 27.967 -15 24 17.15 24.5r 581804 G83 C~4u1R 2018 04 11.45369 15 55 27.935 -15 24 16.88 24.4r 581804 G83 C~4u1R 2018 04 11.46218 15 55 27.897 -15 24 16.78 24.6r 581804 G83 C~4u1R 2018 04 11.47114 15 55 27.877 -15 24 16.69 24.4r 581804 G83 C~4u1R 2018 04 11.47951 15 55 27.849 -15 24 16.77 25.0r 581804 G83 C~4u1R
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 -0.19 0.00 0.14
2 0.0001 0.00 -0.10 0.00 -0.03
3 0.0002 0.00 0.08 0.00 -0.13
4 0.0030 0.00 -0.14 0.00 -0.07
5 0.0055 0.00 0.10 0.00 -0.08
6 0.0630 0.00 -0.06 0.00 -0.02
7 0.0631 0.00 -0.06 0.00 0.04
8 0.1394 0.00 0.22 0.00 -0.18
9 0.1395 0.00 0.10 0.00 -0.12
10 0.7318 0.00 -0.13 0.00 -0.03
11 0.8054 0.00 0.01 0.00 0.15
12 0.8111 0.00 -0.02 0.00 -0.00
13 0.8874 0.00 0.35 0.00 0.03
14 0.9665 0.00 0.06 0.00 -0.07
15 0.9666 0.00 0.12 0.00 0.11
16 0.9667 0.00 -0.11 0.00 0.13
17 0.9856 0.00 -0.04 0.00 0.00
18 0.9857 0.00 -0.02 0.00 0.01
19 0.9858 0.00 -0.12 0.00 0.09
20 0.9913 0.00 -0.14 0.00 -0.03
21 1.0540 0.00 0.07 0.00 -0.03
22 1.0541 0.00 0.03 0.00 -0.00
23 1.0622 0.00 -0.01 0.00 0.03
24 1.1143 0.00 0.01 0.00 0.06
25 1.1360 0.00 -0.15 0.00 0.06
26 1.6927 0.00 -0.09 0.00 -0.04
27 1.7090 0.00 0.06 0.00 -0.06
28 1.7967 0.00 0.07 0.00 0.19
29 1.8485 0.00 -0.04 0.00 0.13
30 1.8623 0.00 -0.04 0.00 -0.04
31 1.9195 0.00 0.12 0.00 0.01
32 1.9330 0.00 0.21 0.00 -0.02
33 2.0044 0.00 -0.05 0.00 -0.02
34 2.0997 0.00 -0.03 0.00 0.02
35 2.1026 0.00 -0.03 0.00 -0.06
36 3.1648 0.00 -0.16 0.00 -0.31
37 3.2249 0.00 0.02 0.00 0.09
38 3.2413 0.00 0.15 0.00 0.20
39 3.2440 0.00 -0.07 0.00 0.02
40 3.8686 0.00 0.01 0.00 -0.10
41 3.8687 0.00 -0.07 0.00 0.06
42 3.8687 0.00 -0.03 0.00 -0.04
43 3.8687 0.00 -0.01 0.00 0.02
44 3.8687 0.00 -0.04 0.00 -0.08
45 3.8688 0.00 0.00 0.00 -0.05
46 3.8688 0.00 -0.03 0.00 0.10
47 3.8688 0.00 -0.14 0.00 0.07
48 3.8688 0.00 0.05 0.00 0.03
49 3.8689 0.00 0.08 0.00 -0.17
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.
581804 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.555 47.555 47.555 ecceobj 0.209 0.209 0.209 incobj 6.030 6.030 6.030 qmin 36.653 36.653 36.653 qmax 59.298 59.305 59.290 amean 47.796 47.796 47.796 amin 47.239 47.241 47.237 amax 48.421 48.446 48.432 emean 0.190 0.194 0.191 emin 0.148 0.154 0.150 emax 0.231 0.231 0.231 imean 7.270 7.075 7.243 imin 4.442 4.442 4.442 imax 9.689 9.192 9.596 excite_mean 0.231 0.232 0.231 fracstop 1.000 1.000 1.000 cjmean 3.082 3.082 3.082 libcent 0 181.4 184.6 180.7 libamp 0 136.7 135.8 137.4 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 63.4 93.6 64.8 kozaiamp 55.5 95.5 58.8