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: 15VT152 # Created Sat Nov 17 02:10:09 2018 # Orbit generated from Bernstein formalism # Fitting 8 observations of 8 # Arc: 23.93d # First observation: 2015/11/06 # Last observation: 2015/11/30 Preliminary a, adot, b, bdot, g, gdot: -0.000011 0.057177 0.000012 -0.019224 0.046417 0.000000 # Chi-squared of fit: 3.06 DOF: 10 RMS: 0.11 # Min/Max residuals: -0.17 0.24 # Exact a, adot, b, bdot, g, gdot: 1.760990E-05 5.258712E-02 -5.913390E-06 -1.701074E-02 4.582470E-02 -4.454834E-03 # Covariance matrix: 8.7595E-13 9.8596E-11 3.9793E-14 -5.0443E-11 2.5824E-11 1.6407E-09 9.8596E-11 1.1610E-07 1.6285E-10 -5.4791E-08 2.1128E-08 -8.7215E-07 3.9793E-14 1.6285E-10 7.4980E-13 -8.7291E-11 2.7428E-11 -2.1619E-09 -5.0443E-11 -5.4791E-08 -8.7291E-11 2.6268E-08 -9.9813E-09 4.2019E-07 2.5824E-11 2.1128E-08 2.7428E-11 -9.9813E-09 3.9784E-09 -1.0920E-07 1.6407E-09 -8.7215E-07 -2.1619E-09 4.2019E-07 -1.0920E-07 2.6945E-05 # lat0 lon0 xBary yBary zBary JD0 -37.879992 19.255781 -0.404282 -0.557900 -0.717530 2457332.806611 # Heliocentric elements and errors Epoch: 2457330.5000 = 2015/11/04 Mean Anomaly: 207.12941 +/- 24.332 Argument of Peri: 48.98716 +/- 23.872 Long of Asc Node: 137.89183 +/- 0.200 Inclination: 39.75881 +/- 0.051 Eccentricity: 0.18055910 +/- 0.0212 Semi-Major Axis: 19.33581456 +/- 0.2880 Time of Perihelion: 2470518.0334 +/- 2078.3 Perihelion: 15.84455727 +/- 0.4728 Aphelion: 22.82707185 +/- 0.5324 Period (y) 85.0260 +/- 1.90 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 16.98155492 +/- 0.0224 Ecliptic Y 6.36105279 +/- 0.0078 Ecliptic Z -13.39926002 +/- 0.0185 Ecliptic XDOT -0.00182502 +/- 0.0002 Ecliptic YDOT 0.00268435 +/- 0.0001 Ecliptic ZDOT -0.00063872 +/- 0.0002 # Distances at JD0 (AU) Heliocenter to KBO 22.54720313 +/- 0.0202 Geocenter to KBO 21.82229201 +/- 0.0300 # Hcoef: 10.07
The following table shows the complete astrometric record for 15VT152. 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 (15VT152) followed by the observatory code and reference code for the source of the astrometry.
2015 11 06.305822 02 11 49.07 -27 22 27.5 23.2i 15VT152 W84 C~1yTE 2015 11 07.305231 02 11 39.93 -27 22 47.4 23.1r 15VT152 W84 C~1yTE 2015 11 14.120428 02 10 38.88 -27 24 08.1 23.1r 15VT152 W84 C~1yTE 2015 11 14.121806 02 10 38.87 -27 24 07.9 23.8g 15VT152 W84 C~1yTE 2015 11 15.126481 02 10 30.07 -27 24 12.3 22.6i 15VT152 W84 C~1yTE 2015 11 21.101111 02 09 39.34 -27 23 53.7 22.7i 15VT152 W84 C~1yTE 2015 11 30.232743 02 08 28.05 -27 21 07.3 23.0i 15VT152 W84 C~1yTE 2015 11 30.234109 02 08 28.04 -27 21 07.2 22.6z 15VT152 W84 C~1yTE
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 0.11 0.00 0.01 2 0.0027 -118.74 -0.14 33.43 -0.09 3 0.0214 -890.04 0.04 303.12 0.06 4 0.0214 -890.08 0.15 303.35 0.24 5 0.0241 -998.25 -0.15 348.65 -0.09 6 0.0405 -1603.66 -0.01 649.10 -0.17 7 0.0655 -2396.95 -0.01 1197.13 -0.00 8 0.0655 -2397.03 0.02 1197.27 0.05
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.
15VT152 quality flag:1 Type: CENTAURR CENTAURR CENTAURR axisobj 19.424 20.972 18.939 ecceobj 0.175 0.102 0.248 incobj 39.711 39.990 39.546 qmin 14.523 18.354 11.667 qmax 23.995 23.592 26.748 amean 19.247 20.897 19.009 amin 18.775 20.714 18.794 amax 19.565 21.037 19.451 emean 0.137 0.108 0.237 emin 0.060 0.095 0.100 emax 0.240 0.122 0.387 imean 38.361 38.736 37.704 imin 37.334 38.597 35.232 imax 39.443 38.869 39.758 excite_mean 0.637 0.635 0.661 fracstop 0.131 0.005 0.069 cjmean 2.804 2.739 2.797 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 167.1 156.1 185.4 kozaiamp 179.7 8.9 179.8