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: 15HA197 # Created Wed Nov 27 02:10:19 2024 # Orbit generated from Bernstein formalism # Fitting 6 observations of 6 # Arc: 1.08y # First observation: 2014/03/24 # Last observation: 2015/04/22 Preliminary a, adot, b, bdot, g, gdot: 0.000001 0.014780 0.000000 0.012255 0.021415 0.000000 # Chi-squared of fit: 0.50 DOF: 6 RMS: 0.05 # Min/Max residuals: -0.10 0.09 # Exact a, adot, b, bdot, g, gdot: 1.066116E-05 1.466986E-02 9.259996E-06 1.216740E-02 2.125217E-02 -6.457486E-03 # Covariance matrix: 7.9397E-13 3.3966E-11 7.1906E-15 2.9472E-11 4.9501E-11 2.2406E-09 3.3966E-11 3.9487E-09 7.7811E-13 3.4470E-09 5.6033E-09 2.6208E-07 7.1906E-15 7.7811E-13 4.9010E-13 1.6210E-13 1.1711E-12 4.7034E-11 2.9472E-11 3.4470E-09 1.6210E-13 3.0979E-09 4.7965E-09 2.3549E-07 4.9501E-11 5.6033E-09 1.1711E-12 4.7965E-09 8.0588E-09 3.6466E-07 2.2406E-09 2.6208E-07 4.7034E-11 2.3549E-07 3.6466E-07 1.7905E-05 # lat0 lon0 xBary yBary zBary JD0 -11.942272 -163.109675 0.232088 -0.200226 -0.947256 2456740.715758 # Heliocentric elements and errors Epoch: 2456740.5000 = 2014/03/24 Mean Anomaly: 304.05341 +/- 19.107 Argument of Peri: 75.71491 +/- 2.933 Long of Asc Node: 210.31452 +/- 0.032 Inclination: 41.15294 +/- 0.070 Eccentricity: 0.33078501 +/- 0.2191 Semi-Major Axis: 52.76060529 +/- 8.9506 Time of Perihelion: 2478494.2539 +/- 4955.3 Perihelion: 35.30818778 +/- 13.0179 Aphelion: 70.21302280 +/- 16.5972 Period (y) 383.2418 +/- 97.52 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -45.04501764 +/- 0.1861 Ecliptic Y -13.43289268 +/- 0.0565 Ecliptic Z -9.73629270 +/- 0.0411 Ecliptic XDOT 0.00101190 +/- 0.0005 Ecliptic YDOT -0.00166928 +/- 0.0002 Ecliptic ZDOT 0.00170583 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 48.00303756 +/- 0.1755 Geocenter to KBO 47.05402090 +/- 0.1988 # Hcoef: 6.81
The following table shows the complete astrometric record for 15HA197. 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 (15HA197) followed by the observatory code and reference code for the source of the astrometry.
2014 03 24.21498 12 43 10.657 -17 37 59.06 23.2R 15HA197 807 C~1MjT 2014 03 24.28437 12 43 10.366 -17 37 56.92 15HA197 807 C~1MjT 2014 03 25.28547 12 43 06.272 -17 37 28.17 15HA197 807 C~1MjT 2015 04 18.07032 12 45 55.37 -17 06 15.7 15HA197 W84 C~2zsQ 2015 04 21.06171 12 45 43.55 -17 04 30.7 23.7V 15HA197 W84 C~2zsQ 2015 04 22.06118 12 45 39.66 -17 03 55.2 15HA197 W84 C~2zsQ
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 0.05 0.00 -0.04
2 0.0002 -4.67 -0.05 0.30 0.08
3 0.0029 -69.81 -0.01 3.28 -0.03
4 1.0674 1406.56 -0.00 2684.39 0.01
5 1.0756 1209.34 -0.01 2713.65 -0.10
6 1.0783 1144.05 0.01 2724.13 0.09
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.
15HA197 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0