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: 16LW90
# Created Fri Nov 1 01:10:24 2024
# Orbit generated from Bernstein formalism
# Fitting 4 observations of 4
# Arc: 1.06d
# First observation: 2016/06/09
# Last observation: 2016/06/10
# WARNING Fitting with energy constraint
# WARNING and with gdot fixed = 0
# Chi-squared of fit: 0.02 DOF: 4 RMS: 0.01
# Min/Max residuals: -0.02 0.02
# Exact a, adot, b, bdot, g, gdot:
1.570417E-05 2.471074E-02 -1.020428E-06 -1.537493E-03 2.495550E-02 0.000000E+00
# Covariance matrix:
3.5076E-11 5.3842E-08 2.4226E-14 4.2392E-11 9.1252E-09 0.0000E+00
5.3842E-08 8.4541E-05 3.7719E-11 6.6353E-08 1.4252E-05 0.0000E+00
2.4226E-14 3.7719E-11 4.9943E-13 -1.6179E-10 6.3822E-12 0.0000E+00
4.2392E-11 6.6353E-08 -1.6179E-10 1.9828E-07 1.1201E-08 0.0000E+00
9.1252E-09 1.4252E-05 6.3822E-12 1.1201E-08 2.4082E-06 0.0000E+00
0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 2.0451E-04
# lat0 lon0 xBary yBary zBary JD0
0.117834 -117.446973 -0.284552 0.002096 -0.971220 2457548.846210
# Heliocentric elements and errors
Epoch: 2457540.5000 = 2016/06/01
Mean Anomaly: 18.37866 +/- 66.721
Argument of Peri: 158.69409 +/- 133.991
Long of Asc Node: 64.79875 +/- 0.895
Inclination: 3.55840 +/- 1.683
Eccentricity: 0.02787141 +/- 0.5716
Semi-Major Axis: 42.15898785 +/- 22.1397
Time of Perihelion: 2452436.0949 +/- 318459.7
Perihelion: 40.98395757 +/- 32.3104
Aphelion: 43.33401812 +/- 33.1453
Period (y) 273.7433 +/- 215.63
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -18.66826134 +/- 1.1487
Ecliptic Y -36.55660481 +/- 2.2112
Ecliptic Z 0.08243375 +/- 0.0051
Ecliptic XDOT 0.00240642 +/- 0.0010
Ecliptic YDOT -0.00125688 +/- 0.0014
Ecliptic ZDOT -0.00016868 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 41.04748631 +/- 2.0374
Geocenter to KBO 40.07132909 +/- 2.4918
# Hcoef: 8.72
The following table shows the complete astrometric record for 16LW90. 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 (16LW90) followed by the observatory code and reference code for the source of the astrometry.
2016 06 09.345421 16 02 02.457 -20 33 19.87 24.5r 16LW90 568 C~4qZn 2016 06 09.413008 16 02 02.121 -20 33 19.03 24.9r 16LW90 568 C~4qZn 2016 06 10.332777 16 01 57.636 -20 33 07.26 24.9r 16LW90 568 C~4qZn 2016 06 10.409216 16 01 57.259 -20 33 06.32 24.7r 16LW90 568 C~4qZn
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 -0.01 0.00 0.01
2 0.0002 -4.79 0.01 -0.10 -0.01
3 0.0027 -68.87 -0.02 -0.90 0.01
4 0.0029 -74.25 0.02 -1.01 -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.
16LW90 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0