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: 15HY195 # Created Sat Feb 22 02:10:27 2025 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 12 observations of 12 # Arc: 7.05y # First observation: 2014/04/30 # Last observation: 2021/05/16 # Chi-squared of fit: 1.72 DOF: 18 RMS: 0.07 # Min/Max residuals: -0.16 0.13 # Exact a, adot, b, bdot, g, gdot: 1.219216E-05 1.524136E-02 4.880110E-06 6.133692E-03 1.889192E-02 8.146133E-03 # Covariance matrix: 3.4358E-13 -3.6461E-13 5.3590E-14 -1.3761E-13 -1.0886E-13 -3.2028E-12 -3.6461E-13 2.8391E-12 -6.1937E-13 1.5920E-12 -2.1620E-11 3.7076E-11 5.3590E-14 -6.1937E-13 3.5413E-13 -3.9340E-13 5.2865E-12 -8.3618E-12 -1.3761E-13 1.5920E-12 -3.9340E-13 9.3648E-13 -1.3593E-11 2.1495E-11 -1.0886E-13 -2.1620E-11 5.2865E-12 -1.3593E-11 2.4217E-10 -3.1660E-10 -3.2028E-12 3.7076E-11 -8.3618E-12 2.1495E-11 -3.1660E-10 5.0061E-10 # lat0 lon0 xBary yBary zBary JD0 -2.368338 -145.434264 -0.087495 -0.041352 -1.002527 2456777.521238 # Heliocentric elements and errors Epoch: 2456778.5000 = 2014/05/01 Mean Anomaly: 31.36161 +/- 0.358 Argument of Peri: 267.27735 +/- 0.285 Long of Asc Node: 220.40738 +/- 0.000 Inclination: 22.04950 +/- 0.001 Eccentricity: 0.51740070 +/- 0.0028 Semi-Major Axis: 75.96470082 +/- 0.5635 Time of Perihelion: 2435711.0448 +/- 335.9 Perihelion: 36.66051148 +/- 0.3464 Aphelion: 115.26889015 +/- 0.8816 Period (y) 662.1036 +/- 7.37 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -44.32947586 +/- 0.0359 Ecliptic Y -30.64570310 +/- 0.0247 Ecliptic Z -2.18710877 +/- 0.0018 Ecliptic XDOT 0.00024619 +/- 0.0000 Ecliptic YDOT -0.00251238 +/- 0.0000 Ecliptic ZDOT 0.00083949 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 53.93520013 +/- 0.0327 Geocenter to KBO 52.93234009 +/- 0.0436 # Hcoef: 6.02
The following table shows the complete astrometric record for 15HY195. 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 (15HY195) followed by the observatory code and reference code for the source of the astrometry.
2014 04 30.02046 14 05 53.40 -15 16 18.9 15HY195 W84 C~2fcC 2014 04 30.08936 14 05 53.13 -15 16 17.3 23.2V 15HY195 W84 C~2fcC 2014 05 01.00777 14 05 49.77 -15 15 56.2 15HY195 W84 C~2fcC 2014 05 01.07699 14 05 49.51 -15 15 54.5 15HY195 W84 C~2fcC 2015 04 25.15121 14 10 04.41 -15 16 05.7 23.3V 15HY195 W84 C~2gaG 2015 04 25.22005 14 10 04.15 -15 16 04.1 15HY195 W84 C~2gaG 2015 04 26.18124 14 10 00.63 -15 15 42.6 15HY195 W84 C~2gaG 2015 04 26.25040 14 10 00.37 -15 15 41.1 15HY195 W84 C~2gaG 2021 05 16.15513 14 30 46.32 -14 52 02.8 23.8V 15HY195 W84 C~8ePX 2021 05 16.18932 14 30 46.20 -14 52 02.2 15HY195 W84 C~8ePX 2021 05 16.24460 14 30 46.01 -14 52 01.1 15HY195 W84 C~8ePX 2021 05 16.27227 14 30 45.90 -14 52 00.6 15HY195 W84 C~8ePX
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 0.13 0.00 0.01 2 0.0002 0.00 -0.08 0.00 0.03 3 0.0027 0.00 -0.00 0.00 -0.07 4 0.0029 0.00 -0.05 0.00 0.04 5 0.9860 0.00 -0.02 0.00 0.03 6 0.9862 0.00 -0.06 0.00 0.09 7 0.9888 0.00 0.05 0.00 -0.04 8 0.9890 0.00 0.02 0.00 -0.10 9 7.0449 0.00 0.07 0.00 0.06 10 7.0450 0.00 0.04 0.00 -0.01 11 7.0451 0.00 0.06 0.00 -0.00 12 7.0452 0.00 -0.16 0.00 -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.
15HY195 quality flag:3 Type: 4:1EEE 4:1EEE 4:1EEE axisobj 74.945 74.946 74.945 ecceobj 0.512 0.512 0.512 incobj 22.110 22.110 22.110 qmin 34.850 34.765 34.869 qmax 119.449 119.618 119.575 amean 75.871 75.871 75.874 amin 74.572 74.718 74.565 amax 77.586 77.638 77.629 emean 0.526 0.527 0.526 emin 0.508 0.508 0.508 emax 0.541 0.542 0.542 imean 21.708 21.632 21.736 imin 21.034 20.910 21.068 imax 22.775 22.774 22.775 excite_mean 0.643 0.643 0.643 fracstop 1.000 1.000 1.000 cjmean 2.905 2.905 2.905 libcent 0 273.2 273.7 273.1 libamp 0 58.7 58.4 59.2 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 239.0 249.7 234.3 kozaiamp 180.0 180.0 180.0