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: 19GZ196 # Created Fri Jan 24 02:11:39 2025 # Orbit generated from Bernstein formalism # Fitting 13 observations of 13 # Arc: 21.18d # First observation: 2019/03/15 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.466799 0.000002 0.145442 0.177745 0.000000 # Chi-squared of fit: 2.59 DOF: 20 RMS: 0.08 # Min/Max residuals: -0.15 0.21 # Exact a, adot, b, bdot, g, gdot: 2.970497E-05 2.803221E-01 1.641876E-05 1.559528E-01 1.484725E-01 6.278183E-02 # Covariance matrix: 9.7189E-13 5.6070E-09 3.4297E-14 -3.1098E-10 8.8311E-10 -1.1274E-08 5.6070E-09 5.2867E-05 3.3615E-10 -2.9988E-06 8.2743E-06 -1.1359E-04 3.4297E-14 3.3615E-10 3.7052E-13 -2.6899E-11 5.1791E-11 -8.6464E-10 -3.1098E-10 -2.9988E-06 -2.6899E-11 1.7744E-07 -4.6498E-07 7.2021E-06 8.8311E-10 8.2743E-06 5.1791E-11 -4.6498E-07 1.2977E-06 -1.7316E-05 -1.1274E-08 -1.1359E-04 -8.6464E-10 7.2021E-06 -1.7316E-05 3.2435E-04 # lat0 lon0 xBary yBary zBary JD0 -7.292469 166.327299 -0.129002 -0.125388 -0.980145 2458557.836801 # Heliocentric elements and errors Epoch: 2458550.5000 = 2019/03/08 Mean Anomaly: 91.54666 +/- 4.243 Argument of Peri: 230.96529 +/- 2.788 Long of Asc Node: 178.58836 +/- 0.303 Inclination: 29.76286 +/- 0.666 Eccentricity: 0.21998396 +/- 0.0525 Semi-Major Axis: 7.32125142 +/- 0.0938 Time of Perihelion: 2463946.1369 +/- 77.6 Perihelion: 5.71069352 +/- 0.3910 Aphelion: 8.93180933 +/- 0.4008 Period (y) 19.8101 +/- 0.38 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -7.48078881 +/- 0.0498 Ecliptic Y 1.67965245 +/- 0.0121 Ecliptic Z -0.85482264 +/- 0.0066 Ecliptic XDOT -0.00268413 +/- 0.0003 Ecliptic YDOT -0.00466622 +/- 0.0002 Ecliptic ZDOT 0.00270536 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 7.71454181 +/- 0.0484 Geocenter to KBO 6.73525188 +/- 0.0517 # Hcoef: 14.88
The following table shows the complete astrometric record for 19GZ196. 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 (19GZ196) followed by the observatory code and reference code for the source of the astrometry.
2019 03 15.33600 10 58 22.25 -01 19 44.9 22.6y 19GZ196 T09 C~8SgA 2019 03 15.38139 10 58 21.31 -01 19 34.6 23.0y 19GZ196 T09 C~8SgA 2019 03 15.42479 10 58 20.42 -01 19 24.4 23.3y 19GZ196 T09 C~8SgA 2019 03 15.50551 10 58 18.75 -01 19 05.7 22.5y 19GZ196 T09 C~8SgA 2019 04 04.38985 10 52 19.27 -00 03 29.7 24.4g 19GZ196 T09 C~8SgA 2019 04 04.41725 10 52 18.83 -00 03 23.6 24.6g 19GZ196 T09 C~8SgA 2019 04 04.42780 10 52 18.68 -00 03 21.6 24.5g 19GZ196 T09 C~8SgA 2019 04 05.38960 10 52 04.06 +00 00 09.1 24.1r 19GZ196 T09 C~8SgA 2019 04 05.43532 10 52 03.35 +00 00 19.0 23.7r 19GZ196 T09 C~8SgA 2019 04 05.46680 10 52 02.86 +00 00 25.9 24.1r 19GZ196 T09 C~8SgA 2019 04 05.46890 10 52 02.83 +00 00 26.4 23.8r 19GZ196 T09 C~8SgA 2019 04 05.50116 10 52 02.33 +00 00 33.3 23.6r 19GZ196 T09 C~8SgA 2019 04 05.51163 10 52 02.18 +00 00 35.6 24.0r 19GZ196 T09 C~8SgA
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 0.03 0.00 0.04
2 0.0001 -16.98 0.03 4.05 -0.15
3 0.0002 -33.23 0.04 8.30 0.05
4 0.0005 -63.56 -0.10 15.86 0.06
5 0.0549 -6792.82 -0.04 2114.10 0.02
6 0.0550 -6801.27 -0.15 2117.17 0.07
7 0.0550 -6804.12 0.21 2118.15 -0.12
8 0.0576 -7088.22 0.02 2227.72 0.07
9 0.0578 -7101.89 0.03 2232.73 -0.00
10 0.0579 -7111.35 -0.05 2236.25 0.01
11 0.0579 -7111.96 -0.03 2236.54 0.06
12 0.0579 -7121.56 -0.05 2240.01 -0.09
13 0.0580 -7124.53 0.08 2241.26 -0.02
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.
19GZ196 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