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: 19GL186 # Created Sun Oct 19 01:11:59 2025 # Orbit generated from Bernstein formalism # Fitting 14 observations of 14 # Arc: 2.18y # First observation: 2017/01/28 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000106 0.019866 0.000002 -0.001713 0.022738 0.000000 # Chi-squared of fit: 4.15 DOF: 22 RMS: 0.10 # Min/Max residuals: -0.19 0.19 # Exact a, adot, b, bdot, g, gdot: 1.376102E-05 1.977661E-02 -5.437583E-07 -1.701787E-03 2.280785E-02 -1.966815E-03 # Covariance matrix: 1.4611E-12 1.2069E-12 3.7409E-14 -1.9678E-13 1.9153E-12 4.9404E-11 1.2069E-12 2.3127E-12 5.5514E-14 -3.0560E-13 2.5974E-12 7.6921E-11 3.7409E-14 5.5514E-14 4.0788E-13 -2.0515E-13 6.8792E-14 1.9546E-12 -1.9678E-13 -3.0560E-13 -2.0515E-13 1.7155E-13 -3.6390E-13 -1.0764E-11 1.9153E-12 2.5974E-12 6.8792E-14 -3.6390E-13 3.4853E-12 9.1389E-11 4.9404E-11 7.6921E-11 1.9546E-12 -1.0764E-11 9.1389E-11 2.7093E-09 # lat0 lon0 xBary yBary zBary JD0 -4.590611 164.359985 0.584357 -0.063369 -0.791787 2457781.795303 # Heliocentric elements and errors Epoch: 2457780.5000 = 2017/01/27 Mean Anomaly: 227.09533 +/- 0.651 Argument of Peri: 7.68937 +/- 0.619 Long of Asc Node: 301.52592 +/- 0.006 Inclination: 6.70938 +/- 0.001 Eccentricity: 0.17223962 +/- 0.0013 Semi-Major Axis: 39.48396913 +/- 0.0216 Time of Perihelion: 2491235.9886 +/- 161.6 Perihelion: 32.68326513 +/- 0.0535 Aphelion: 46.28467314 +/- 0.0564 Period (y) 248.1072 +/- 0.20 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.69658614 +/- 0.0034 Ecliptic Y 12.55440368 +/- 0.0010 Ecliptic Z -3.50919947 +/- 0.0003 Ecliptic XDOT -0.00039476 +/- 0.0000 Ecliptic YDOT -0.00236063 +/- 0.0000 Ecliptic ZDOT -0.00018479 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.64219978 +/- 0.0033 Geocenter to KBO 43.84455591 +/- 0.0036 # Hcoef: 7.37
The following table shows the complete astrometric record for 19GL186. 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 (19GL186) followed by the observatory code and reference code for the source of the astrometry.
2017 01 28.294502 10 55 18.387 +01 55 03.42 23.2i 19GL186 W84 C~94xG 2017 03 25.10520 10 51 26.30 +02 17 10.0 24.2V 19GL186 W84 C~94xG 2017 03 25.19755 10 51 25.92 +02 17 12.3 19GL186 W84 C~94xG 2017 03 26.18767 10 51 21.98 +02 17 38.2 19GL186 W84 C~94xG 2019 01 11.58975 11 04 14.99 +00 48 21.6 23.3z 19GL186 T09 C~870l 2019 01 11.60342 11 04 14.97 +00 48 21.6 23.3z 19GL186 T09 C~870l 2019 01 11.63048 11 04 14.89 +00 48 21.9 23.6z 19GL186 T09 C~870l 2019 03 15.36982 11 00 17.40 +01 09 07.9 23.3y 19GL186 T09 C~870l 2019 03 15.41117 11 00 17.21 +01 09 08.7 23.4y 19GL186 T09 C~870l 2019 03 15.49215 11 00 16.85 +01 09 11.1 24.0y 19GL186 T09 C~870l 2019 04 05.40935 10 58 52.54 +01 18 25.6 24.0r 19GL186 T09 C~870l 2019 04 05.44793 10 58 52.39 +01 18 26.6 24.0r 19GL186 T09 C~870l 2019 04 05.45002 10 58 52.37 +01 18 26.6 24.1r 19GL186 T09 C~870l 2019 04 05.48146 10 58 52.27 +01 18 27.5 24.0r 19GL186 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 -0.01 0.00 -0.13
2 0.1528 -3722.17 0.07 -106.97 0.09
3 0.1531 -3728.31 0.05 -107.03 -0.03
4 0.1558 -3792.80 -0.11 -105.70 0.07
5 1.9529 8971.95 -0.03 -607.91 0.01
6 1.9529 8971.67 0.19 -608.02 -0.01
7 1.9530 8970.44 -0.07 -608.21 -0.00
8 2.1248 5198.66 -0.06 -825.26 0.17
9 2.1249 5195.72 -0.05 -825.62 -0.17
10 2.1251 5189.81 -0.19 -825.47 0.01
11 2.1824 3808.79 0.16 -798.54 0.02
12 2.1825 3806.33 0.06 -798.48 0.00
13 2.1825 3806.06 -0.09 -798.59 -0.12
14 2.1826 3804.33 0.09 -798.33 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.
19GL186 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.234 39.285 39.185 ecceobj 0.176 0.179 0.173 incobj 6.708 6.707 6.709 qmin 31.729 31.640 31.827 qmax 47.824 47.858 47.727 amean 39.457 39.457 39.457 amin 38.991 39.006 38.952 amax 39.988 39.963 40.007 emean 0.177 0.179 0.177 emin 0.158 0.158 0.159 emax 0.197 0.199 0.194 imean 8.431 8.530 8.304 imin 7.837 7.912 7.709 imax 9.017 9.163 8.891 excite_mean 0.230 0.232 0.228 fracstop 1.000 1.000 1.000 cjmean 2.991 2.990 2.993 libcent 0 180.4 179.9 179.4 libamp 0 98.8 90.3 110.9 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 185.6 188.4 190.0 kozaiamp 180.0 180.0 179.9