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 Tue Apr 1 01:11:14 2025 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 83.89d # First observation: 2019/01/11 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000002 0.013104 -0.000004 -0.001818 0.021740 0.000000 # Chi-squared of fit: 2.60 DOF: 14 RMS: 0.09 # Min/Max residuals: -0.17 0.17 # Exact a, adot, b, bdot, g, gdot: 1.403496E-05 1.983931E-02 -1.196419E-06 -1.637496E-03 2.278422E-02 -1.401130E-03 # Covariance matrix: 5.2176E-13 5.0920E-11 2.9071E-14 1.1571E-12 1.0641E-11 2.8443E-10 5.0920E-11 8.1096E-08 4.2899E-11 1.8438E-09 1.5488E-08 2.5885E-07 2.9071E-14 4.2899E-11 4.8840E-13 -1.2609E-12 8.2165E-12 1.4207E-10 1.1571E-12 1.8438E-09 -1.2609E-12 5.7624E-11 3.5103E-10 5.6077E-09 1.0641E-11 1.5488E-08 8.2165E-12 3.5103E-10 2.9698E-09 5.2074E-08 2.8443E-10 2.5885E-07 1.4207E-10 5.6077E-09 5.2074E-08 1.4456E-06 # lat0 lon0 xBary yBary zBary JD0 -4.754968 166.859219 0.822967 -0.045642 -0.549715 2458495.090551 # Heliocentric elements and errors Epoch: 2458490.5000 = 2019/01/07 Mean Anomaly: 219.02515 +/- 13.160 Argument of Peri: 15.38120 +/- 13.585 Long of Asc Node: 301.70390 +/- 0.527 Inclination: 6.73131 +/- 0.063 Eccentricity: 0.16348874 +/- 0.0397 Semi-Major Axis: 39.13040548 +/- 0.3891 Time of Perihelion: 2493501.8696 +/- 3226.3 Perihelion: 32.73302485 +/- 1.5867 Aphelion: 45.52778610 +/- 1.6176 Period (y) 244.7821 +/- 3.65 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -42.94300609 +/- 0.1019 Ecliptic Y 10.86258754 +/- 0.0238 Ecliptic Z -3.63832787 +/- 0.0087 Ecliptic XDOT -0.00035479 +/- 0.0001 Ecliptic YDOT -0.00236530 +/- 0.0000 Ecliptic ZDOT -0.00018234 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.44474108 +/- 0.0986 Geocenter to KBO 43.89003160 +/- 0.1050 # Hcoef: 7.38
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.
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 -0.05 0.00 0.01
2 0.0000 -0.28 0.16 -0.12 -0.01
3 0.0001 -1.50 -0.10 -0.30 -0.01
4 0.1719 -3768.34 0.04 -230.95 0.17
5 0.1720 -3771.28 0.05 -231.32 -0.17
6 0.1722 -3777.19 -0.09 -231.20 0.00
7 0.2295 -5158.27 0.10 -209.32 0.02
8 0.2296 -5160.74 0.00 -209.27 0.01
9 0.2296 -5161.01 -0.15 -209.38 -0.11
10 0.2297 -5162.74 0.04 -209.13 0.08
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:1 Type: SCATNEAR CLASSICAL CENTAURR axisobj 39.030 41.114 37.748 ecceobj 0.164 0.077 0.237 incobj 6.714 6.520 6.906 qmin 30.867 36.982 28.684 qmax 48.884 45.754 51.401 amean 39.463 41.189 38.608 amin 38.799 40.810 37.160 amax 40.187 41.574 40.319 emean 0.155 0.076 0.244 emin 0.069 0.043 0.215 emax 0.221 0.102 0.275 imean 15.310 8.257 8.700 imin 8.242 5.904 7.901 imax 19.321 10.441 9.458 excite_mean 0.308 0.163 0.287 fracstop 1.000 1.000 0.007 cjmean 2.939 3.038 2.951 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 165.9 180.3 28.7 kozaiamp 180.0 180.0 14.9