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: 19GN186 # Created Sun Dec 22 02:11:07 2024 # Orbit generated from Bernstein formalism # Fitting 12 observations of 12 # Arc: 83.97d # First observation: 2019/01/11 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000004 0.013678 -0.000004 0.008061 0.022363 0.000000 # Chi-squared of fit: 8.97 DOF: 18 RMS: 0.15 # Min/Max residuals: -0.29 0.25 # Exact a, adot, b, bdot, g, gdot: 1.489820E-05 2.195074E-02 5.485367E-06 8.239442E-03 2.369635E-02 3.771424E-03 # Covariance matrix: 3.8819E-13 3.2957E-11 1.8541E-14 1.2184E-12 6.8141E-12 1.6401E-10 3.2957E-11 5.3915E-08 2.9623E-11 1.6759E-09 1.0035E-08 1.2475E-07 1.8541E-14 2.9623E-11 3.6734E-13 -7.9947E-13 5.5028E-12 6.5654E-11 1.2184E-12 1.6759E-09 -7.9947E-13 6.6241E-11 3.1541E-10 4.6705E-09 6.8141E-12 1.0035E-08 5.5028E-12 3.1541E-10 1.8770E-09 2.5249E-08 1.6401E-10 1.2475E-07 6.5654E-11 4.6705E-09 2.5249E-08 7.6125E-07 # lat0 lon0 xBary yBary zBary JD0 -5.854145 165.069010 0.805836 -0.058699 -0.573362 2458495.042281 # Heliocentric elements and errors Epoch: 2458490.5000 = 2019/01/07 Mean Anomaly: 49.96862 +/- 3.238 Argument of Peri: 277.53252 +/- 4.340 Long of Asc Node: 179.14868 +/- 0.147 Inclination: 21.14830 +/- 0.185 Eccentricity: 0.16361335 +/- 0.0407 Semi-Major Axis: 46.84899475 +/- 1.1331 Time of Perihelion: 2442233.3755 +/- 872.8 Perihelion: 39.18387378 +/- 2.1289 Aphelion: 54.51411572 +/- 2.3179 Period (y) 320.6702 +/- 11.63 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -40.91172425 +/- 0.0742 Ecliptic Y 11.73558464 +/- 0.0198 Ecliptic Z -4.30411156 +/- 0.0079 Ecliptic XDOT -0.00115820 +/- 0.0001 Ecliptic YDOT -0.00231572 +/- 0.0000 Ecliptic ZDOT 0.00090236 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 42.77871556 +/- 0.0711 Geocenter to KBO 42.20058775 +/- 0.0772 # Hcoef: 7.95
The following table shows the complete astrometric record for 19GN186. 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 (19GN186) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.54148 10 55 58.49 +00 28 47.5 23.7z 19GN186 T09 C~870l 2019 01 11.55854 10 55 58.46 +00 28 47.4 23.9z 19GN186 T09 C~870l 2019 01 11.62779 10 55 58.28 +00 28 48.7 24.0z 19GN186 T09 C~870l 2019 01 11.66816 10 55 58.18 +00 28 49.1 23.6z 19GN186 T09 C~870l 2019 03 15.36307 10 51 58.66 +00 55 21.4 24.0y 19GN186 T09 C~870l 2019 03 15.40583 10 51 58.48 +00 55 22.4 23.6y 19GN186 T09 C~870l 2019 03 15.43297 10 51 58.35 +00 55 23.8 23.4y 19GN186 T09 C~870l 2019 03 15.48948 10 51 58.10 +00 55 25.6 24.2y 19GN186 T09 C~870l 2019 04 05.40376 10 50 36.01 +01 06 45.4 24.7r 19GN186 T09 C~870l 2019 04 05.44583 10 50 35.88 +01 06 47.1 24.5r 19GN186 T09 C~870l 2019 04 05.47937 10 50 35.74 +01 06 48.3 24.9r 19GN186 T09 C~870l 2019 04 05.51163 10 50 35.63 +01 06 49.0 24.7r 19GN186 T09 C~870l
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 0.00
2 0.0000 -0.38 0.23 -0.27 -0.21
3 0.0002 -3.37 -0.10 -0.10 0.15
4 0.0003 -4.91 -0.08 -0.31 0.06
5 0.1720 -3933.95 0.02 89.24 0.08
6 0.1721 -3936.83 0.25 89.12 -0.26
7 0.1722 -3939.17 -0.11 89.67 0.13
8 0.1723 -3943.32 -0.16 89.89 0.04
9 0.2296 -5341.86 0.04 244.69 -0.29
10 0.2297 -5344.32 0.16 245.51 0.17
11 0.2298 -5346.72 -0.19 245.81 0.19
12 0.2299 -5348.51 -0.01 245.83 -0.07
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.
19GN186 quality flag:1 Type: SCATEXTD SCATNEAR SCATEXTD axisobj 46.911 51.625 43.732 ecceobj 0.168 0.278 0.070 incobj 21.203 20.661 21.788 qmin 38.432 36.747 40.043 qmax 55.726 67.080 47.813 amean 46.922 51.582 43.784 amin 46.521 51.074 43.445 amax 47.376 52.182 44.151 emean 0.162 0.267 0.067 emin 0.148 0.249 0.054 emax 0.177 0.286 0.083 imean 21.012 20.709 21.523 imin 20.613 20.131 21.189 imax 21.385 21.365 21.889 excite_mean 0.393 0.443 0.373 fracstop 1.000 1.000 1.000 cjmean 2.941 2.943 2.927 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 177.4 175.1 179.2 kozaiamp 180.0 180.0 180.0