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: 19GO186 # Created Sun Dec 22 02:11:07 2024 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 83.94d # First observation: 2019/01/11 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000010 0.018140 -0.000006 0.006303 0.024690 0.000000 # Chi-squared of fit: 7.52 DOF: 16 RMS: 0.15 # Min/Max residuals: -0.39 0.26 # Exact a, adot, b, bdot, g, gdot: 1.624816E-05 2.732094E-02 4.475033E-06 6.543272E-03 2.616736E-02 6.171276E-03 # Covariance matrix: 5.0421E-13 2.5596E-11 2.0864E-14 1.0318E-12 5.6206E-12 1.5516E-10 2.5596E-11 4.6221E-08 3.5396E-11 1.4954E-09 8.5316E-09 8.7423E-08 2.0864E-14 3.5396E-11 4.8880E-13 -1.1972E-12 6.5262E-12 6.4831E-11 1.0318E-12 1.4954E-09 -1.1972E-12 6.5641E-11 2.7842E-10 3.3389E-09 5.6206E-12 8.5316E-09 6.5262E-12 2.7842E-10 1.5837E-09 1.7987E-08 1.5516E-10 8.7423E-08 6.4831E-11 3.3389E-09 1.7987E-08 5.7362E-07 # lat0 lon0 xBary yBary zBary JD0 -6.227036 164.699083 0.802133 -0.062987 -0.578080 2458495.038901 # Heliocentric elements and errors Epoch: 2458490.5000 = 2019/01/07 Mean Anomaly: 34.70252 +/- 1.774 Argument of Peri: 277.13586 +/- 2.881 Long of Asc Node: 187.92790 +/- 0.155 Inclination: 14.57477 +/- 0.085 Eccentricity: 0.26538722 +/- 0.0306 Semi-Major Axis: 47.65077890 +/- 1.2017 Time of Perihelion: 2446909.0762 +/- 398.4 Perihelion: 35.00487130 +/- 1.7052 Aphelion: 60.29668650 +/- 2.1073 Period (y) 328.9374 +/- 12.44 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -36.99199741 +/- 0.0557 Ecliptic Y 10.94425026 +/- 0.0153 Ecliptic Z -4.14504382 +/- 0.0063 Ecliptic XDOT -0.00143718 +/- 0.0001 Ecliptic YDOT -0.00257013 +/- 0.0000 Ecliptic ZDOT 0.00061033 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.79904476 +/- 0.0533 Geocenter to KBO 38.21554266 +/- 0.0581 # Hcoef: 8.45
The following table shows the complete astrometric record for 19GO186. 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 (19GO186) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.53810 10 54 02.60 +00 16 36.6 24.1z 19GO186 T09 C~870l 2019 01 11.55854 10 54 02.54 +00 16 37.0 24.1z 19GO186 T09 C~870l 2019 01 11.58440 10 54 02.48 +00 16 37.3 24.9z 19GO186 T09 C~870l 2019 03 15.36307 10 49 40.88 +00 43 43.4 23.6y 19GO186 T09 C~870l 2019 03 15.40583 10 49 40.66 +00 43 44.6 23.6y 19GO186 T09 C~870l 2019 03 15.43297 10 49 40.54 +00 43 45.8 23.2y 19GO186 T09 C~870l 2019 03 15.48681 10 49 40.26 +00 43 48.0 24.3y 19GO186 T09 C~870l 2019 03 15.48948 10 49 40.26 +00 43 47.8 24.1y 19GO186 T09 C~870l 2019 04 05.40376 10 48 11.58 +00 55 38.9 24.6r 19GO186 T09 C~870l 2019 04 05.43322 10 48 11.45 +00 55 39.7 24.5r 19GO186 T09 C~870l 2019 04 05.47728 10 48 11.30 +00 55 41.1 24.7r 19GO186 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 -0.11
2 0.0001 -0.98 -0.09 0.02 0.02
3 0.0001 -1.93 0.03 -0.04 0.09
4 0.1720 -4249.97 0.26 -3.60 0.09
5 0.1721 -4253.48 0.11 -3.76 -0.27
6 0.1722 -4255.60 0.12 -3.34 0.02
7 0.1723 -4260.32 -0.39 -2.92 0.18
8 0.1724 -4260.25 -0.10 -3.10 -0.02
9 0.2296 -5762.21 0.03 143.63 0.14
10 0.2297 -5764.32 -0.15 143.62 -0.11
11 0.2298 -5766.93 0.12 144.05 -0.04
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.
19GO186 quality flag:1 Type: 2:1E 7:3EEEE SCATEXTD axisobj 47.785 52.803 44.139 ecceobj 0.270 0.359 0.186 incobj 14.609 14.366 14.871 qmin 34.351 33.328 35.122 qmax 62.181 73.880 53.513 amean 47.795 52.970 44.138 amin 47.165 52.192 43.744 amax 48.532 53.942 44.576 emean 0.266 0.356 0.182 emin 0.248 0.340 0.165 emax 0.282 0.372 0.202 imean 14.492 14.717 15.394 imin 14.177 14.125 14.600 imax 14.847 15.350 16.257 excite_mean 0.365 0.437 0.322 fracstop 1.000 1.000 1.000 cjmean 2.981 2.966 2.978 libcent 0 179.7 179.8 -180.0 libamp 0 153.9 164.6 -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 167.7 176.3 186.1 kozaiamp 180.0 180.0 180.0