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: 500880
# Created Sun Dec 22 02:07:14 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 45 observations of 45
# Arc: 5.00y
# First observation: 2013/04/09
# Last observation: 2018/04/11
# Chi-squared of fit: 16.82 DOF: 84 RMS: 0.11
# Min/Max residuals: -0.35 0.34
# Exact a, adot, b, bdot, g, gdot:
1.405617E-05 2.039390E-02 -6.329872E-07 -9.389320E-04 2.188661E-02 -1.324244E-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
7.340118 -121.589712 0.626390 0.100139 -0.777237 2456392.040188
# Heliocentric elements and errors
Epoch: 2456392.5000 = 2013/04/10
Mean Anomaly: 291.66725 +/- 0.000
Argument of Peri: 186.64673 +/- 0.000
Long of Asc Node: 128.04137 +/- 0.000
Inclination: 7.65469 +/- 0.000
Eccentricity: 0.08064370 +/- 0.0000
Semi-Major Axis: 47.60783813 +/- 0.0000
Time of Perihelion: 2479166.6690 +/- 0.0
Perihelion: 43.76856572 +/- 0.0000
Aphelion: 51.44711053 +/- 0.0000
Period (y) 328.4928 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -24.68068180 +/- 0.0000
Ecliptic Y -38.93801956 +/- 0.0000
Ecliptic Z 5.83732636 +/- 0.0000
Ecliptic XDOT 0.00224500 +/- 0.0000
Ecliptic YDOT -0.00120884 +/- 0.0000
Ecliptic ZDOT -0.00013751 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.46917915 +/- 0.0000
Geocenter to KBO 45.69011603 +/- 0.0000
# Hcoef: 7.34
The following table shows the complete astrometric record for 500880. 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 (500880) followed by the observatory code and reference code for the source of the astrometry.
2013 04 09.53941 15 51 18.982 -12 38 27.61 23.8r 500880 568 C~1XRc 2013 04 10.50850 15 51 15.908 -12 38 11.99 24.0r 500880 568 C~1XRc 2013 04 10.54891 15 51 15.783 -12 38 11.41 23.9r 500880 568 C~1XRc 2013 04 19.56175 15 50 44.846 -12 35 45.93 24.3r 500880 568 C~1XRc 2013 05 07.43997 15 49 33.466 -12 31 00.77 24.0r 500880 568 C~1XRc 2013 05 07.48420 15 49 33.281 -12 31 00.08 24.2r 500880 568 C~1XRc 2013 05 07.52439 15 49 33.105 -12 30 59.48 23.8r 500880 568 C~1XRc 2013 05 09.48456 15 49 24.727 -12 30 29.61 23.8r 500880 568 C~1XRc 2013 05 10.49178 15 49 20.401 -12 30 14.50 24.4r 500880 568 C~1XRc 2013 06 01.41302 15 47 45.094 -12 25 22.41 24.2r 500880 568 C~1XRc 2013 06 02.40662 15 47 40.837 -12 25 11.48 24.6r 500880 568 C~1XRc 2013 06 02.41172 15 47 40.834 -12 25 11.50 24.3r 500880 568 C~1XRc 2013 06 02.41674 15 47 40.800 -12 25 11.48 24.1r 500880 568 C~1XRc 2013 06 04.37273 15 47 32.543 -12 24 50.12 23.8r 500880 568 C~1XRc 2013 06 06.37603 15 47 24.163 -12 24 29.27 23.8r 500880 568 C~1XRc 2013 07 02.32839 15 45 48.916 -12 21 38.89 500880 568 C~1XRc 2013 07 03.36611 15 45 45.789 -12 21 35.86 24.1r 500880 568 C~1XRc 2014 02 28.63842 15 57 01.334 -13 05 04.09 23.9r 500880 568 C~2LSW 2014 03 06.56601 15 57 00.185 -13 04 06.42 24.0r 500880 568 C~1XRc 2014 04 05.60639 15 56 09.453 -12 57 30.84 24.1r 500880 568 C~1XRc 2014 04 30.42091 15 54 42.755 -12 51 02.40 23.7r 500880 568 C~1XRc 2014 04 30.47219 15 54 42.541 -12 51 01.58 23.3r 500880 568 C~1XRc 2014 04 30.52393 15 54 42.327 -12 51 00.62 24.0r 500880 568 C~1XRc 2014 05 05.48351 15 54 21.869 -12 49 44.48 23.9r 500880 568 C~1XRc 2014 05 06.41552 15 54 17.964 -12 49 30.37 23.8r 500880 568 C~1XRc 2014 05 06.48238 15 54 17.670 -12 49 29.35 23.9r 500880 568 C~1XRd 2014 05 06.55850 15 54 17.344 -12 49 28.18 23.7r 500880 568 C~1XRd 2014 05 22.46588 15 53 08.368 -12 45 42.64 24.0r 500880 568 C~1XRd 2014 05 24.44313 15 52 59.660 -12 45 17.47 23.5r 500880 568 C~1XRd 2014 07 01.37151 15 50 29.667 -12 40 01.27 24.0r 500880 568 C~1XRd 2014 07 18.35282 15 49 44.545 -12 39 51.26 24.4r 500880 568 C~1XRd 2015 03 22.60757 16 01 20.995 -13 18 32.75 24.0r 500880 568 C~1XRd 2015 04 21.53176 15 59 58.704 -13 11 15.87 23.9r 500880 568 C~1XRd 2015 04 21.58936 15 59 58.496 -13 11 14.94 23.9r 500880 568 C~1XRd 2016 05 29.38862 16 01 59.383 -13 20 02.97 24.0w 500880 568 C~2LSW 2016 05 30.42964 16 01 54.807 -13 19 51.37 24.1w 500880 568 C~2LSW 2016 06 03.42874 16 01 37.357 -13 19 08.81 24.2w 500880 568 C~2LSW 2017 01 31.65858 16 10 11.431 -13 58 39.19 23.9w 500880 568 C~2LSW 2017 02 03.65494 16 10 19.509 -13 58 36.25 500880 568 C~2LSW 2018 04 11.30757 16 14 43.624 -14 05 29.33 23.7r 500880 G83 C~4ulr 2018 04 11.31600 16 14 43.591 -14 05 29.19 23.8r 500880 G83 C~4ulr 2018 04 11.32443 16 14 43.576 -14 05 29.07 23.6r 500880 G83 C~4ulr 2018 04 11.34279 16 14 43.519 -14 05 28.84 23.9r 500880 G83 C~4ulr 2018 04 11.35119 16 14 43.497 -14 05 28.73 23.9r 500880 G83 C~4ulr 2018 04 11.35966 16 14 43.468 -14 05 28.67 24.0r 500880 G83 C~4ulr
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 0.14 0.00 -0.04
2 0.0027 0.00 -0.08 0.00 0.10
3 0.0028 0.00 0.02 0.00 0.03
4 0.0274 0.00 0.12 0.00 -0.14
5 0.0764 0.00 -0.05 0.00 0.01
6 0.0765 0.00 0.05 0.00 0.02
7 0.0766 0.00 0.02 0.00 -0.00
8 0.0820 0.00 -0.04 0.00 0.00
9 0.0847 0.00 0.04 0.00 -0.07
10 0.1448 0.00 0.03 0.00 0.01
11 0.1475 0.00 -0.35 0.00 -0.12
12 0.1475 0.00 -0.07 0.00 -0.20
13 0.1475 0.00 -0.25 0.00 -0.24
14 0.1529 0.00 -0.06 0.00 -0.00
15 0.1583 0.00 -0.00 0.00 0.14
16 0.2294 0.00 0.14 0.00 -0.28
17 0.2322 0.00 0.15 0.00 0.04
18 0.8901 0.00 0.06 0.00 0.02
19 0.9063 0.00 0.10 0.00 0.04
20 0.9885 0.00 0.01 0.00 -0.01
21 1.0565 0.00 0.04 0.00 0.02
22 1.0566 0.00 0.01 0.00 0.05
23 1.0568 0.00 -0.00 0.00 0.20
24 1.0703 0.00 -0.06 0.00 0.08
25 1.0729 0.00 0.06 0.00 0.07
26 1.0731 0.00 -0.05 0.00 0.08
27 1.0733 0.00 -0.04 0.00 0.10
28 1.1168 0.00 0.34 0.00 0.25
29 1.1223 0.00 0.03 0.00 -0.01
30 1.2261 0.00 0.10 0.00 -0.16
31 1.2726 0.00 -0.07 0.00 0.05
32 1.9495 0.00 -0.04 0.00 -0.08
33 2.0315 0.00 -0.04 0.00 0.10
34 2.0316 0.00 0.06 0.00 0.14
35 3.1372 0.00 -0.10 0.00 -0.13
36 3.1400 0.00 -0.06 0.00 -0.08
37 3.1510 0.00 0.07 0.00 0.10
38 3.8142 0.00 -0.03 0.00 -0.05
39 3.8224 0.00 -0.06 0.00 0.22
40 5.0042 0.00 0.01 0.00 -0.04
41 5.0042 0.00 -0.11 0.00 -0.02
42 5.0042 0.00 0.04 0.00 -0.01
43 5.0043 0.00 0.00 0.00 -0.03
44 5.0043 0.00 0.05 0.00 -0.04
45 5.0043 0.00 -0.01 0.00 -0.09
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.
500880 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.476 47.476 47.476 ecceobj 0.083 0.083 0.083 incobj 7.651 7.651 7.651 qmin 41.568 41.510 41.568 qmax 54.387 54.426 54.297 amean 47.797 47.797 47.797 amin 47.337 47.336 47.335 amax 48.299 48.335 48.281 emean 0.088 0.083 0.081 emin 0.041 0.028 0.035 emax 0.128 0.127 0.127 imean 5.241 5.448 5.680 imin 3.856 4.519 4.726 imax 6.212 6.212 6.270 excite_mean 0.127 0.127 0.129 fracstop 1.000 1.000 1.000 cjmean 3.129 3.129 3.129 libcent 0 181.9 182.2 182.5 libamp 0 133.9 136.0 134.6 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 157.6 164.8 145.7 kozaiamp 179.7 180.0 180.0