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: 500888
# Created Fri Apr 26 01:08:09 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 35 observations of 35
# Arc: 3.15y
# First observation: 2013/04/09
# Last observation: 2016/06/03
# Chi-squared of fit: 9.07 DOF: 64 RMS: 0.09
# Min/Max residuals: -0.16 0.43
# Exact a, adot, b, bdot, g, gdot:
1.563705E-05 2.507260E-02 1.661391E-06 3.870931E-03 2.535042E-02 1.883812E-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
8.929842 -122.920689 0.608071 0.123882 -0.788284 2456392.036308
# Heliocentric elements and errors
Epoch: 2456392.5000 = 2013/04/10
Mean Anomaly: 65.95168 +/- 0.000
Argument of Peri: 331.92487 +/- 0.000
Long of Asc Node: 192.10242 +/- 0.000
Inclination: 12.47561 +/- 0.000
Eccentricity: 0.06403891 +/- 0.0000
Semi-Major Axis: 41.16590008 +/- 0.0000
Time of Perihelion: 2438718.7696 +/- 0.0
Perihelion: 38.52968087 +/- 0.0000
Aphelion: 43.80211929 +/- 0.0000
Period (y) 264.1281 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -22.12165283 +/- 0.0000
Ecliptic Y -33.04859123 +/- 0.0000
Ecliptic Z 6.12326988 +/- 0.0000
Ecliptic XDOT 0.00219277 +/- 0.0000
Ecliptic YDOT -0.00158554 +/- 0.0000
Ecliptic ZDOT 0.00044472 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.23764824 +/- 0.0000
Geocenter to KBO 39.44705340 +/- 0.0000
# Hcoef: 7.99
The following table shows the complete astrometric record for 500888. 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 (500888) followed by the observatory code and reference code for the source of the astrometry.
2013 04 09.53553 15 47 28.189 -10 48 12.38 24.0r 500888 568 C~1XRg 2013 04 10.50462 15 47 24.701 -10 47 50.30 24.0r 500888 568 C~1XRg 2013 04 10.54490 15 47 24.548 -10 47 49.36 23.9r 500888 568 C~1XRg 2013 04 19.55776 15 46 49.353 -10 44 21.99 24.1r 500888 568 C~1XRg 2013 05 07.43599 15 45 28.411 -10 37 44.80 24.2r 500888 568 C~1XRg 2013 05 07.48020 15 45 28.188 -10 37 43.83 23.8r 500888 568 C~1XRg 2013 05 07.52039 15 45 27.991 -10 37 43.01 24.0r 500888 568 C~1XRg 2013 05 09.48057 15 45 18.520 -10 37 01.90 24.0r 500888 568 C~1XRg 2013 05 10.48774 15 45 13.623 -10 36 41.12 23.8r 500888 568 C~1XRg 2013 06 01.40276 15 43 26.362 -10 30 04.52 24.3r 500888 568 C~1XRg 2013 06 01.40895 15 43 26.342 -10 30 04.81 24.1r 500888 568 C~1XRg 2013 06 02.40261 15 43 21.596 -10 29 50.02 23.7r 500888 568 C~1XRg 2013 06 06.37184 15 43 02.919 -10 28 53.87 23.9r 500888 568 C~1XRg 2013 07 02.32424 15 41 17.569 -10 25 04.78 24.0r 500888 568 C~1XRg 2013 07 03.36215 15 41 14.161 -10 25 00.97 24.1r 500888 568 C~1XRg 2014 03 06.53071 15 54 32.292 -11 05 45.17 23.8r 500888 568 C~1XRg 2014 04 04.52001 15 53 38.734 -10 55 56.23 23.8r 500888 568 C~1XRg 2014 04 30.40515 15 51 57.490 -10 46 16.11 23.9r 500888 568 C~1XRg 2014 04 30.45667 15 51 57.257 -10 46 15.10 23.9r 500888 568 C~1XRg 2014 04 30.50841 15 51 57.026 -10 46 14.07 24.1r 500888 568 C~1XRg 2014 05 05.45039 15 51 34.035 -10 44 28.16 23.8r 500888 568 C~1XRg 2014 05 06.39222 15 51 29.571 -10 44 08.42 23.9r 500888 568 C~1XRg 2014 05 06.45909 15 51 29.253 -10 44 07.09 23.8r 500888 568 C~1XRg 2014 05 06.51006 15 51 28.998 -10 44 06.00 23.9r 500888 568 C~1XRg 2014 05 06.53514 15 51 28.880 -10 44 05.50 24.1r 500888 568 C~1XRg 2014 05 22.49847 15 50 10.944 -10 38 56.07 24.0r 500888 568 C~1XRg 2014 05 22.50235 15 50 10.926 -10 38 55.93 24.0r 500888 568 C~1XRg 2014 05 24.47488 15 50 01.200 -10 38 21.63 24.0r 500888 568 C~1XRg 2014 06 02.45717 15 49 17.381 -10 35 59.12 24.0r 500888 568 C~1XRg 2014 07 01.36375 15 47 14.436 -10 31 22.59 23.8r 500888 568 C~1XRg 2014 07 18.33716 15 46 25.545 -10 31 08.86 24.1r 500888 568 C~1XRg 2015 03 22.60347 16 00 02.976 -11 05 55.34 24.0r 500888 568 C~1XRg 2015 08 11.30815 15 51 45.473 -10 39 47.94 24.1r 500888 568 C~2LSW 2016 05 29.38457 16 01 23.421 -10 47 49.12 24.1w 500888 568 C~2LSW 2016 06 03.42470 16 00 58.816 -10 46 37.36 24.2w 500888 568 C~2LSW
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 0.04 0.00 0.15
2 0.0027 0.00 -0.04 0.00 -0.03
3 0.0028 0.00 -0.09 0.00 -0.02
4 0.0274 0.00 -0.04 0.00 -0.07
5 0.0764 0.00 0.03 0.00 -0.06
6 0.0765 0.00 -0.07 0.00 -0.02
7 0.0766 0.00 -0.07 0.00 -0.05
8 0.0820 0.00 -0.04 0.00 0.00
9 0.0847 0.00 -0.04 0.00 -0.05
10 0.1447 0.00 0.04 0.00 0.43
11 0.1448 0.00 0.19 0.00 0.05
12 0.1475 0.00 0.09 0.00 -0.03
13 0.1583 0.00 0.02 0.00 -0.13
14 0.2294 0.00 -0.01 0.00 -0.16
15 0.2322 0.00 -0.04 0.00 -0.11
16 0.9062 0.00 -0.09 0.00 -0.02
17 0.9856 0.00 0.10 0.00 -0.10
18 1.0565 0.00 -0.06 0.00 0.14
19 1.0566 0.00 0.04 0.00 0.04
20 1.0567 0.00 0.19 0.00 -0.06
21 1.0703 0.00 0.09 0.00 0.09
22 1.0728 0.00 0.00 0.00 0.06
23 1.0730 0.00 0.09 0.00 -0.00
24 1.0732 0.00 -0.04 0.00 0.02
25 1.0732 0.00 0.01 0.00 -0.00
26 1.1169 0.00 -0.01 0.00 -0.05
27 1.1170 0.00 0.01 0.00 0.02
28 1.1224 0.00 0.08 0.00 0.04
29 1.1469 0.00 -0.03 0.00 0.04
30 1.2261 0.00 -0.04 0.00 -0.09
31 1.2726 0.00 -0.04 0.00 0.01
32 1.9495 0.00 -0.07 0.00 -0.03
33 2.3375 0.00 -0.10 0.00 0.02
34 3.1372 0.00 0.09 0.00 -0.12
35 3.1510 0.00 -0.08 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.
500888 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 41.036 41.036 41.036 ecceobj 0.060 0.060 0.060 incobj 12.503 12.503 12.503 qmin 37.857 37.842 37.888 qmax 45.000 44.943 45.038 amean 41.337 41.337 41.337 amin 41.022 41.022 41.018 amax 41.663 41.662 41.670 emean 0.063 0.063 0.063 emin 0.047 0.047 0.047 emax 0.080 0.080 0.081 imean 13.382 13.382 13.382 imin 12.345 12.341 12.342 imax 14.303 14.302 14.303 excite_mean 0.240 0.240 0.240 fracstop 1.000 1.000 1.000 cjmean 3.003 3.003 3.003 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 175.1 175.1 175.1 kozaiamp 180.0 180.0 180.0