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: 19GM186 # Created Tue Apr 1 01:11:14 2025 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 83.95d # First observation: 2019/01/11 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000004 0.017310 -0.000003 -0.001431 0.023732 0.000000 # Chi-squared of fit: 2.98 DOF: 16 RMS: 0.09 # Min/Max residuals: -0.16 0.16 # Exact a, adot, b, bdot, g, gdot: 1.519013E-05 2.468982E-02 3.959814E-08 -1.193090E-03 2.486653E-02 -1.231029E-03 # Covariance matrix: 3.8459E-13 3.0681E-11 1.7072E-14 9.0497E-13 6.4432E-12 1.6051E-10 3.0681E-11 5.5589E-08 2.8336E-11 1.6021E-09 1.0440E-08 1.3684E-07 1.7072E-14 2.8336E-11 3.6685E-13 -9.4139E-13 5.3367E-12 7.3006E-11 9.0497E-13 1.6021E-09 -9.4139E-13 6.0259E-11 3.0016E-10 3.7615E-09 6.4432E-12 1.0440E-08 5.3367E-12 3.0016E-10 1.9702E-09 2.7830E-08 1.6051E-10 1.3684E-07 7.3006E-11 3.7615E-09 2.7830E-08 8.2688E-07 # lat0 lon0 xBary yBary zBary JD0 -5.603053 165.952052 0.814415 -0.054997 -0.561479 2458495.062711 # Heliocentric elements and errors Epoch: 2458490.5000 = 2019/01/07 Mean Anomaly: 292.18127 +/- 11.760 Argument of Peri: 318.57550 +/- 15.843 Long of Asc Node: 282.53724 +/- 0.348 Inclination: 6.23617 +/- 0.020 Eccentricity: 0.07621306 +/- 0.0338 Semi-Major Axis: 41.76768142 +/- 0.4433 Time of Perihelion: 2477064.5301 +/- 3207.3 Perihelion: 38.58443852 +/- 1.4681 Aphelion: 44.95092431 +/- 1.4884 Period (y) 269.9409 +/- 4.30 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -39.17451252 +/- 0.0693 Ecliptic Y 10.63378495 +/- 0.0173 Ecliptic Z -3.92642860 +/- 0.0070 Ecliptic XDOT -0.00050863 +/- 0.0001 Ecliptic YDOT -0.00267484 +/- 0.0000 Ecliptic ZDOT -0.00011770 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 40.78157250 +/- 0.0667 Geocenter to KBO 40.21469119 +/- 0.0718 # Hcoef: 7.99
The following table shows the complete astrometric record for 19GM186. 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 (19GM186) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.56191 10 59 36.31 +00 22 23.5 23.7z 19GM186 T09 C~870l 2019 01 11.58707 10 59 36.25 +00 22 24.0 23.8z 19GM186 T09 C~870l 2019 01 11.62779 10 59 36.13 +00 22 24.2 24.1z 19GM186 T09 C~870l 2019 01 11.63048 10 59 36.13 +00 22 24.2 24.0z 19GM186 T09 C~870l 2019 03 15.36645 10 55 21.10 +00 44 25.7 23.4y 19GM186 T09 C~870l 2019 03 15.40851 10 55 20.90 +00 44 27.2 23.4y 19GM186 T09 C~870l 2019 03 15.43564 10 55 20.77 +00 44 27.9 23.2y 19GM186 T09 C~870l 2019 03 15.49215 10 55 20.51 +00 44 29.4 22.9y 19GM186 T09 C~870l 2019 04 05.43532 10 53 51.62 +00 54 32.2 25.3r 19GM186 T09 C~870l 2019 04 05.47937 10 53 51.45 +00 54 33.2 24.7r 19GM186 T09 C~870l 2019 04 05.51373 10 53 51.33 +00 54 34.2 24.6r 19GM186 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 0.11 0.00 -0.16
2 0.0001 -1.02 0.05 0.11 0.16
3 0.0002 -2.76 -0.13 -0.40 -0.01
4 0.0002 -2.76 -0.02 -0.40 0.01
5 0.1719 -4042.23 0.10 -257.09 -0.09
6 0.1721 -4045.58 -0.06 -256.86 0.14
7 0.1721 -4047.65 -0.07 -256.97 0.03
8 0.1723 -4051.83 0.03 -257.09 -0.09
9 0.2296 -5515.17 -0.11 -215.12 0.09
10 0.2298 -5517.91 -0.02 -215.18 -0.10
11 0.2298 -5519.96 0.13 -214.95 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.
19GM186 quality flag:2 Type: CLASSICAL CLASSICAL REMOVED axisobj 41.664 43.775 40.087 ecceobj 0.070 0.077 0.118 incobj 6.219 6.158 6.288 qmin 37.434 39.623 30.276 qmax 46.376 48.333 60.801 amean 41.764 43.862 40.306 amin 41.431 43.520 35.941 amax 42.111 44.243 46.208 emean 0.073 0.078 0.187 emin 0.044 0.063 0.111 emax 0.101 0.093 0.316 imean 8.434 7.864 9.928 imin 6.808 7.175 6.645 imax 10.114 8.485 12.416 excite_mean 0.165 0.158 0.257 fracstop 1.000 1.000 0.957 cjmean 3.043 3.070 2.986 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 179.5 180.1 184.7 kozaiamp 180.0 180.0 180.0