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: 16EX392 # Created Wed Nov 27 02:10:35 2024 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 37.93d # First observation: 2016/02/03 # Last observation: 2016/03/12 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.025205 0.000001 0.005919 0.023186 0.000000 # Chi-squared of fit: 5.38 DOF: 22 RMS: 0.11 # Min/Max residuals: -0.16 0.28 # Exact a, adot, b, bdot, g, gdot: 1.537708E-05 2.198218E-02 4.758752E-06 6.109695E-03 2.269623E-02 -6.686131E-03 # Covariance matrix: 4.7228E-13 1.4849E-10 2.4387E-14 -8.8473E-12 2.3530E-11 -7.2622E-10 1.4849E-10 2.1176E-07 3.5210E-11 -1.2673E-08 3.1743E-08 -1.5366E-06 2.4387E-14 3.5210E-11 3.5946E-13 -5.9336E-12 5.2085E-12 -2.9430E-10 -8.8473E-12 -1.2673E-08 -5.9336E-12 8.2465E-10 -1.8799E-09 1.0307E-07 2.3530E-11 3.1743E-08 5.2085E-12 -1.8799E-09 4.8120E-09 -2.0180E-07 -7.2622E-10 -1.5366E-06 -2.9430E-10 1.0307E-07 -2.0180E-07 2.6751E-05 # lat0 lon0 xBary yBary zBary JD0 -16.724360 139.999799 0.111766 -0.281210 -0.936535 2457421.846669 # Heliocentric elements and errors Epoch: 2457420.5000 = 2016/02/02 Mean Anomaly: 328.80048 +/- 11.184 Argument of Peri: 17.80915 +/- 13.969 Long of Asc Node: 185.21476 +/- 0.630 Inclination: 22.42707 +/- 0.221 Eccentricity: 0.37444608 +/- 0.2496 Semi-Major Axis: 60.49079907 +/- 14.3104 Time of Perihelion: 2472313.3497 +/- 754.6 Perihelion: 37.84025645 +/- 17.5536 Aphelion: 83.14134168 +/- 24.7963 Period (y) 470.4811 +/- 166.95 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -33.00572772 +/- 0.0988 Ecliptic Y 27.83551845 +/- 0.0829 Ecliptic Z -12.67892537 +/- 0.0388 Ecliptic XDOT -0.00127574 +/- 0.0004 Ecliptic YDOT -0.00239848 +/- 0.0004 Ecliptic ZDOT 0.00093795 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 44.99943664 +/- 0.0894 Geocenter to KBO 44.06018281 +/- 0.1347 # Hcoef: 7.90
The following table shows the complete astrometric record for 16EX392. 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 (16EX392) followed by the observatory code and reference code for the source of the astrometry.
2016 02 03.34588 09 08 48.88 -01 05 50.2 23.7y 16EX392 T09 C~8HEl 2016 02 03.35844 09 08 48.82 -01 05 49.9 23.5y 16EX392 T09 C~8HEl 2016 02 03.37476 09 08 48.76 -01 05 49.3 23.6y 16EX392 T09 C~8HEl 2016 02 03.38864 09 08 48.70 -01 05 49.2 23.4y 16EX392 T09 C~8HEl 2016 03 04.23536 09 06 45.34 -00 52 26.4 24.7i 16EX392 T09 C~8HEl 2016 03 04.25126 09 06 45.27 -00 52 25.9 24.0i 16EX392 T09 C~8HEl 2016 03 04.26474 09 06 45.22 -00 52 25.4 24.1i 16EX392 T09 C~8HEl 2016 03 04.31992 09 06 45.02 -00 52 23.9 23.8i 16EX392 T09 C~8HEl 2016 03 09.24797 09 06 27.49 -00 49 50.1 25.0r 16EX392 T09 C~8HEl 2016 03 09.26092 09 06 27.44 -00 49 49.2 25.7r 16EX392 T09 C~8HEl 2016 03 09.28024 09 06 27.37 -00 49 48.7 26.0r 16EX392 T09 C~8HEl 2016 03 12.23407 09 06 17.45 -00 48 15.2 23.8z 16EX392 T09 C~8HEl 2016 03 12.25783 09 06 17.37 -00 48 14.5 23.9z 16EX392 T09 C~8HEl 2016 03 12.27134 09 06 17.33 -00 48 14.0 24.0z 16EX392 T09 C~8HEl
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 -0.10
2 0.0000 -0.95 -0.09 0.01 -0.10
3 0.0001 -1.99 0.01 0.31 0.20
4 0.0001 -2.88 0.09 0.13 0.01
5 0.0818 -2009.73 0.06 200.72 -0.01
6 0.0819 -2010.89 -0.10 200.88 -0.05
7 0.0819 -2011.75 -0.12 201.12 0.04
8 0.0821 -2015.07 0.04 201.64 -0.12
9 0.0956 -2312.40 0.23 267.95 -0.16
10 0.0956 -2313.39 0.02 268.58 0.28
11 0.0956 -2314.54 0.02 268.73 0.17
12 0.1037 -2484.77 -0.08 312.41 -0.04
13 0.1038 -2486.13 -0.07 312.71 -0.10
14 0.1038 -2486.85 -0.01 313.01 -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.