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: 05LA54
# Created Mon Apr 28 01:08:54 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 19 observations of 19
# Arc: 8.00y
# First observation: 2005/06/10
# Last observation: 2013/06/09
# Chi-squared of fit: 8.96 DOF: 32 RMS: 0.12
# Min/Max residuals: -0.32 0.22
# Exact a, adot, b, bdot, g, gdot:
1.508286E-05 2.441653E-02 -2.514995E-06 -3.349082E-03 2.458152E-02 -9.102355E-04
# Covariance matrix:
2.8168E-13 -3.4357E-13 -2.2799E-14 4.3018E-14 4.1865E-13 -1.5377E-12
-3.4357E-13 6.3918E-13 4.4205E-14 -8.3457E-14 -8.2472E-13 2.9835E-12
-2.2799E-14 4.4205E-14 1.1772E-13 -2.5246E-14 -5.5017E-14 2.0988E-13
4.3018E-14 -8.3457E-14 -2.5246E-14 2.1005E-14 1.0692E-13 -3.9594E-13
4.1865E-13 -8.2472E-13 -5.5017E-14 1.0692E-13 1.8531E-12 -3.8329E-12
-1.5377E-12 2.9835E-12 2.0988E-13 -3.9594E-13 -3.8329E-12 1.4153E-11
# lat0 lon0 xBary yBary zBary JD0
1.276535 -118.784758 -0.322491 0.021487 -0.960855 2453531.897613
# Heliocentric elements and errors
Epoch: 2453532.5000 = 2005/06/11
Mean Anomaly: 338.93647 +/- 0.161
Argument of Peri: 195.11845 +/- 0.186
Long of Asc Node: 70.67152 +/- 0.000
Inclination: 7.90697 +/- 0.000
Eccentricity: 0.07035555 +/- 0.0002
Semi-Major Axis: 44.53841595 +/- 0.0130
Time of Perihelion: 2459884.7742 +/- 66.0
Perihelion: 41.40489103 +/- 0.0140
Aphelion: 47.67194087 +/- 0.0156
Period (y) 297.2421 +/- 0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -19.76773022 +/- 0.0011
Ecliptic Y -36.64412445 +/- 0.0020
Ecliptic Z 0.90622165 +/- 0.0001
Ecliptic XDOT 0.00242921 +/- 0.0000
Ecliptic YDOT -0.00123496 +/- 0.0000
Ecliptic ZDOT -0.00037514 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.64586063 +/- 0.0018
Geocenter to KBO 40.68101819 +/- 0.0023
# Hcoef: 6.38
The following table shows the complete astrometric record for 05LA54. 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 (05LA54) followed by the observatory code and reference code for the source of the astrometry.
2005 06 10.39687 15 57 26.89 -19 09 12.5 23.2g 05LA54 568 C~0VE2 2005 06 10.42324 15 57 26.76 -19 09 12.3 23.2g 05LA54 568 C~0VE2 2005 06 10.44979 15 57 26.64 -19 09 11.8 23.1g 05LA54 568 C~0VE2 2005 06 11.41267 15 57 22.08 -19 09 00.9 23.1g 05LA54 568 C~0VE2 2005 06 12.40265 15 57 17.46 -19 08 49.9 23.4g 05LA54 568 C~0VE2 2005 07 28.24729 15 54 44.67 -19 03 42.2 22.2i 05LA54 568 C~0VE2 2005 07 28.29707 15 54 44.58 -19 03 42.0 22.3i 05LA54 568 C~0VE2 2005 07 29.25252 15 54 43.12 -19 03 41.1 22.4i 05LA54 568 C~0VE2 2006 05 31.34456 16 03 57.65 -19 39 12.0 22.6r 05LA54 568 C~0VE2 2006 05 31.38113 16 03 57.45 -19 39 11.6 22.5r 05LA54 568 C~0VE2 2006 05 31.41661 16 03 57.27 -19 39 11.2 22.4r 05LA54 568 C~0VE2 2006 06 02.42001 16 03 47.26 -19 38 47.8 05LA54 568 C~0VE2 2007 05 15.38111 16 11 02.85 -20 09 36.2 21.5r 05LA54 695 C~0VE2 2007 05 16.35160 16 10 58.02 -20 09 25.5 05LA54 675 C~0VE2 2007 05 16.39197 16 10 57.82 -20 09 25.2 05LA54 675 C~0VE2 2007 05 17.31445 16 10 53.21 -20 09 14.5 22.0r 05LA54 695 C~0VE2 2013 06 09.01074 16 43 59.63 -22 34 27.9 22.5R 05LA54 304 C~0snn 2013 06 09.13243 16 43 58.99 -22 34 27.0 05LA54 304 C~0snn 2013 06 09.34588 16 43 57.87 -22 34 25.4 05LA54 304 C~0snn
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 0.15 0.00 0.05
2 0.0001 0.00 0.11 0.00 -0.05
3 0.0001 0.00 0.22 0.00 0.14
4 0.0028 0.00 -0.16 0.00 0.19
5 0.0055 0.00 -0.00 0.00 0.14
6 0.1310 0.00 0.03 0.00 0.02
7 0.1311 0.00 -0.07 0.00 0.16
8 0.1338 0.00 0.03 0.00 0.10
9 0.9718 0.00 0.01 0.00 -0.05
10 0.9719 0.00 -0.19 0.00 -0.07
11 0.9720 0.00 -0.17 0.00 -0.09
12 0.9775 0.00 -0.02 0.00 -0.22
13 1.9274 0.00 -0.13 0.00 0.12
14 1.9301 0.00 -0.04 0.00 -0.16
15 1.9302 0.00 0.03 0.00 -0.32
16 1.9327 0.00 0.05 0.00 -0.09
17 7.9962 0.00 0.02 0.00 0.05
18 7.9965 0.00 0.01 0.00 0.07
19 7.9971 0.00 0.04 0.00 0.04
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.
05LA54 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.062 44.062 44.062 ecceobj 0.063 0.063 0.063 incobj 7.936 7.936 7.936 qmin 40.847 40.847 40.846 qmax 48.051 48.041 48.066 amean 44.374 44.374 44.374 amin 44.020 44.027 44.027 amax 44.738 44.748 44.740 emean 0.061 0.061 0.061 emin 0.047 0.047 0.048 emax 0.075 0.075 0.075 imean 6.230 6.230 6.230 imin 5.659 5.660 5.659 imax 6.805 6.804 6.806 excite_mean 0.125 0.125 0.125 fracstop 1.000 1.000 1.000 cjmean 3.087 3.087 3.087 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 182.2 182.2 182.2 kozaiamp 180.0 180.0 180.0