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: 16RG82 # Created Sun Nov 24 02:10:42 2024 # Orbit generated from Bernstein formalism # Fitting 9 observations of 9 # Arc: 3.95y # First observation: 2014/10/01 # Last observation: 2018/09/14 Preliminary a, adot, b, bdot, g, gdot: -0.000123 0.023934 -0.000007 0.000109 0.024940 0.000000 # Chi-squared of fit: 2.00 DOF: 12 RMS: 0.08 # Min/Max residuals: -0.15 0.15 # Exact a, adot, b, bdot, g, gdot: 1.552504E-05 2.383837E-02 -3.417715E-07 1.099673E-04 2.438194E-02 -5.233740E-04 # Covariance matrix: 1.4137E-12 -1.0215E-12 3.2340E-15 -3.2220E-15 -5.2677E-13 -7.1703E-12 -1.0215E-12 1.2691E-12 -7.4673E-15 5.2397E-15 1.1550E-12 1.1884E-11 3.2340E-15 -7.4673E-15 9.8453E-13 -3.4682E-13 -1.6545E-14 -7.7600E-14 -3.2220E-15 5.2397E-15 -3.4682E-13 1.4648E-13 4.8780E-15 5.5550E-14 -5.2677E-13 1.1550E-12 -1.6545E-14 4.8780E-15 2.3715E-12 1.2033E-11 -7.1703E-12 1.1884E-11 -7.7600E-14 5.5550E-14 1.2033E-11 1.2583E-10 # lat0 lon0 xBary yBary zBary JD0 -3.632335 -1.706117 -0.164402 -0.062552 -0.987987 2456931.776608 # Heliocentric elements and errors Epoch: 2456930.5000 = 2014/09/30 Mean Anomaly: 306.47185 +/- 0.564 Argument of Peri: 330.25030 +/- 0.612 Long of Asc Node: 84.05044 +/- 0.015 Inclination: 3.55783 +/- 0.000 Eccentricity: 0.02414206 +/- 0.0004 Semi-Major Axis: 42.59476698 +/- 0.0091 Time of Perihelion: 2472028.2600 +/- 158.9 Perihelion: 41.56644163 +/- 0.0204 Aphelion: 43.62309234 +/- 0.0206 Period (y) 277.9986 +/- 0.09 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 41.90541686 +/- 0.0026 Ecliptic Y -1.08185332 +/- 0.0001 Ecliptic Z -2.59844046 +/- 0.0002 Ecliptic XDOT 0.00001725 +/- 0.0000 Ecliptic YDOT 0.00267271 +/- 0.0000 Ecliptic ZDOT 0.00001616 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.99983645 +/- 0.0026 Geocenter to KBO 41.01396217 +/- 0.0026 # Hcoef: 7.20
The following table shows the complete astrometric record for 16RG82. 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 (16RG82) followed by the observatory code and reference code for the source of the astrometry.
2014 10 01.27583 23 59 31.595 -04 00 39.01 23.5i 16RG82 W84 C~55Zo 2016 09 09.15907 00 11 07.057 -02 44 06.04 23.0i 16RG82 W84 C~55Zo 2016 09 22.09563 00 10 10.435 -02 50 22.77 23.7r 16RG82 W84 C~55Zo 2016 11 05.06575 00 07 11.940 -03 08 06.92 23.5r 16RG82 W84 C~55Zo 2016 11 26.12241 00 06 21.055 -03 11 56.10 22.8r 16RG82 W84 C~55Zo 2017 10 17.22970 00 13 21.328 -02 28 26.31 23.2i 16RG82 W84 C~55Zo 2017 10 17.23107 00 13 21.326 -02 28 26.57 23.8r 16RG82 W84 C~55Zo 2017 10 29.15778 00 12 34.733 -02 32 54.07 22.1z 16RG82 W84 C~55Zo 2018 09 14.30686 00 20 46.832 -01 39 43.74 23.8r 16RG82 W84 C~55Zo
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 0.09
2 1.9408 11393.01 0.06 43.77 0.07
3 1.9762 10462.20 -0.05 39.04 -0.05
4 2.0966 7580.52 -0.00 135.86 -0.02
5 2.1543 6789.44 0.06 231.04 -0.14
6 3.0444 13621.19 0.00 96.72 0.14
7 3.0444 13621.06 -0.04 96.49 -0.09
8 3.0770 12871.11 -0.04 132.01 -0.15
9 3.9535 20962.82 0.03 85.98 0.15
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.
16RG82 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 42.938 42.965 42.912 ecceobj 0.029 0.030 0.029 incobj 3.559 3.559 3.559 qmin 39.967 39.974 39.952 qmax 45.788 45.801 45.693 amean 42.756 42.781 42.730 amin 42.424 42.450 42.395 amax 43.104 43.119 43.071 emean 0.041 0.041 0.040 emin 0.018 0.018 0.017 emax 0.063 0.062 0.062 imean 1.730 1.736 1.726 imin 0.576 0.593 0.559 imax 2.790 2.776 2.805 excite_mean 0.052 0.052 0.052 fracstop 1.000 1.000 1.000 cjmean 3.084 3.084 3.083 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 162.9 162.8 162.7 kozaiamp 180.0 180.0 180.0