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: 16LX89 # Created Fri Nov 22 02:10:41 2024 # Orbit generated from Bernstein formalism # Fitting 12 observations of 12 # Arc: 3.07y # First observation: 2016/05/14 # Last observation: 2019/06/08 Preliminary a, adot, b, bdot, g, gdot: 0.000005 0.017251 0.000002 0.000026 0.020752 0.000000 # Chi-squared of fit: 2.06 DOF: 18 RMS: 0.07 # Min/Max residuals: -0.11 0.22 # Exact a, adot, b, bdot, g, gdot: 1.269826E-05 1.723483E-02 5.308438E-07 2.280432E-05 2.073025E-02 -5.825405E-05 # Covariance matrix: 3.7223E-13 4.5333E-13 9.3759E-15 3.5621E-15 9.2293E-13 1.0760E-11 4.5333E-13 3.0210E-12 2.8188E-14 1.0640E-14 3.3544E-12 6.1316E-11 9.3759E-15 2.8188E-14 1.7513E-13 -7.1497E-14 4.5734E-14 5.8078E-13 3.5621E-15 1.0640E-14 -7.1497E-14 9.8854E-14 1.7335E-14 2.1917E-13 9.2293E-13 3.3544E-12 4.5734E-14 1.7335E-14 4.8442E-12 6.9591E-11 1.0760E-11 6.1316E-11 5.8078E-13 2.1917E-13 6.9591E-11 1.2872E-09 # lat0 lon0 xBary yBary zBary JD0 13.793380 -117.402043 0.155698 0.237256 -0.965841 2457522.702202 # Heliocentric elements and errors Epoch: 2457520.5000 = 2016/05/12 Mean Anomaly: 181.90643 +/- 0.755 Argument of Peri: 268.18165 +/- 0.757 Long of Asc Node: 152.76746 +/- 0.005 Inclination: 13.51647 +/- 0.000 Eccentricity: 0.13568232 +/- 0.0001 Semi-Major Axis: 43.33220605 +/- 0.0097 Time of Perihelion: 2509062.3932 +/- 217.8 Perihelion: 37.45279180 +/- 0.0101 Aphelion: 49.21162030 +/- 0.0124 Period (y) 285.2492 +/- 0.10 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -22.15988541 +/- 0.0023 Ecliptic Y -42.40513736 +/- 0.0044 Ecliptic Z 11.50117579 +/- 0.0012 Ecliptic XDOT 0.00202508 +/- 0.0000 Ecliptic YDOT -0.00104731 +/- 0.0000 Ecliptic ZDOT 0.00000109 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 49.20907681 +/- 0.0039 Geocenter to KBO 48.23867475 +/- 0.0051 # Hcoef: 5.62
The following table shows the complete astrometric record for 16LX89. 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 (16LX89) followed by the observatory code and reference code for the source of the astrometry.
2016 05 14.201413 16 12 54.62 -07 08 07.5 16LX89 W84 C~5Xra 2016 05 14.273489 16 12 54.32 -07 08 06.2 16LX89 W84 C~5Xra 2016 05 15.246025 16 12 50.36 -07 07 52.6 16LX89 W84 C~5Xra 2016 05 15.300941 16 12 50.14 -07 07 51.9 16LX89 W84 C~5Xra 2016 06 09.349163 16 11 07.090 -07 03 29.91 22.3r 16LX89 568 C~4qZm 2016 06 09.416755 16 11 06.815 -07 03 29.48 22.5r 16LX89 568 C~4qZm 2016 06 10.336550 16 11 03.145 -07 03 23.66 22.6r 16LX89 568 C~4qZm 2016 06 10.412916 16 11 02.836 -07 03 23.19 22.4r 16LX89 568 C~4qZm 2017 07 17.128011 16 12 55.81 -07 14 29.3 16LX89 W84 C~5Xra 2017 07 17.130090 16 12 55.80 -07 14 29.6 16LX89 W84 C~5Xra 2019 05 14.186673 16 24 45.33 -07 40 25.3 16LX89 W84 C~5Xra 2019 06 08.157593 16 23 02.23 -07 35 59.5 16LX89 W84 C~5Xra
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 0.09 0.00 -0.11
2 0.0002 -4.63 0.00 0.45 0.15
3 0.0029 -65.07 -0.08 2.94 -0.06
4 0.0030 -68.41 0.03 3.03 -0.11
5 0.0716 -1624.35 -0.02 -23.27 0.01
6 0.0718 -1628.46 -0.00 -23.61 0.01
7 0.0743 -1683.22 -0.01 -28.02 0.01
8 0.0745 -1687.83 0.00 -28.41 0.01
9 1.1743 87.85 -0.01 -371.98 0.22
10 1.1743 87.75 -0.02 -372.30 -0.08
11 2.9979 10757.56 -0.05 10.58 -0.05
12 3.0663 9198.30 0.06 -1.41 -0.00
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.
16LX89 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 42.954 42.982 42.927 ecceobj 0.145 0.145 0.145 incobj 13.526 13.526 13.526 qmin 36.115 36.126 36.043 qmax 50.712 50.862 50.678 amean 43.246 43.286 43.223 amin 42.884 42.912 42.862 amax 43.648 43.695 43.632 emean 0.145 0.145 0.145 emin 0.129 0.128 0.128 emax 0.163 0.164 0.163 imean 13.097 13.073 13.124 imin 12.215 12.209 12.211 imax 13.941 13.919 14.031 excite_mean 0.269 0.269 0.270 fracstop 1.000 1.000 1.000 cjmean 3.006 3.007 3.005 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 179.0 178.7 179.5 kozaiamp 180.0 180.0 180.0