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: 19GS187
# Created Sun Dec 22 02:11:07 2024
# Orbit generated from Bernstein formalism
# Fitting 12 observations of 12
# Arc: 1.14y
# First observation: 2018/02/11
# Last observation: 2019/04/05
Preliminary a, adot, b, bdot, g, gdot:
-0.000042 0.020474 0.000001 -0.003697 0.023410 0.000000
# Chi-squared of fit: 4.67 DOF: 18 RMS: 0.11
# Min/Max residuals: -0.22 0.23
# Exact a, adot, b, bdot, g, gdot:
1.380863E-05 2.046831E-02 -2.973314E-06 -3.697347E-03 2.345091E-02 4.148577E-03
# Covariance matrix:
1.4626E-12 2.2436E-13 2.5675E-14 -3.5324E-13 1.6373E-12 8.1680E-11
2.2436E-13 2.7506E-12 5.2704E-14 -7.1307E-13 2.7835E-12 1.6588E-10
2.5675E-14 5.2704E-14 8.5925E-13 -8.0297E-13 7.1873E-14 4.7049E-12
-3.5324E-13 -7.1307E-13 -8.0297E-13 1.1046E-12 -9.8597E-13 -6.3234E-11
1.6373E-12 2.7835E-12 7.1873E-14 -9.8597E-13 4.4454E-12 2.2822E-10
8.1680E-11 1.6588E-10 4.7049E-12 -6.3234E-11 2.2822E-10 1.4745E-08
# lat0 lon0 xBary yBary zBary JD0
3.417963 -178.390178 0.627531 0.045744 -0.763969 2458161.144004
# Heliocentric elements and errors
Epoch: 2458160.5000 = 2018/02/11
Mean Anomaly: 108.54335 +/- 1.060
Argument of Peri: 32.96448 +/- 0.899
Long of Asc Node: 18.94144 +/- 0.004
Inclination: 10.66322 +/- 0.002
Eccentricity: 0.20351669 +/- 0.0039
Semi-Major Axis: 39.53976664 +/- 0.0653
Time of Perihelion: 2430779.4373 +/- 258.6
Perihelion: 31.49276402 +/- 0.1635
Aphelion: 47.58676927 +/- 0.1738
Period (y) 248.6333 +/- 0.62
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.33381818 +/- 0.0038
Ecliptic Y -0.59695707 +/- 0.0001
Ecliptic Z 2.54217590 +/- 0.0002
Ecliptic XDOT -0.00043574 +/- 0.0000
Ecliptic YDOT -0.00240771 +/- 0.0000
Ecliptic ZDOT -0.00040216 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 43.41242696 +/- 0.0038
Geocenter to KBO 42.64226389 +/- 0.0038
# Hcoef: 8.10
The following table shows the complete astrometric record for 19GS187. 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 (19GS187) followed by the observatory code and reference code for the source of the astrometry.
2018 02 11.643203 12 11 20.83 +02 29 44.6 19GS187 T09 C~8Aj1 2018 04 22.370057 12 06 32.39 +02 58 49.4 19GS187 T09 C~8Aj1 2019 02 05.537827 12 15 37.20 +01 48 00.5 19GS187 T09 C~8Aj1 2019 03 03.528310 12 14 06.17 +01 58 06.3 19GS187 T09 C~8Aj1 2019 03 03.568727 12 14 05.99 +01 58 07.4 19GS187 T09 C~8Aj1 2019 04 04.45934 12 11 46.54 +02 12 14.7 25.1g 19GS187 T09 C~8Aj1 2019 04 04.48250 12 11 46.41 +02 12 15.1 25.2g 19GS187 T09 C~8Aj1 2019 04 04.51398 12 11 46.29 +02 12 15.9 25.3g 19GS187 T09 C~8Aj1 2019 04 05.52240 12 11 41.89 +02 12 41.3 24.1r 19GS187 T09 C~8Aj1 2019 04 05.54544 12 11 41.79 +02 12 41.6 24.1r 19GS187 T09 C~8Aj1 2019 04 05.57686 12 11 41.66 +02 12 42.4 24.1r 19GS187 T09 C~8Aj1 2019 04 05.58315 12 11 41.61 +02 12 42.6 24.2r 19GS187 T09 C~8Aj1
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 -0.00 0.00 0.10
2 0.1909 -4659.90 0.00 -117.10 -0.11
3 0.9826 4523.01 -0.04 -766.25 0.06
4 1.0538 3029.41 0.12 -754.47 -0.09
5 1.0539 3026.50 -0.04 -754.54 -0.11
6 1.1412 771.39 0.08 -809.78 0.23
7 1.1412 769.44 -0.22 -810.19 -0.09
8 1.1413 767.47 0.05 -810.17 0.03
9 1.1441 696.86 -0.06 -813.13 0.17
10 1.1442 695.37 0.07 -813.45 -0.07
11 1.1442 693.26 0.18 -813.49 -0.01
12 1.1443 692.49 -0.15 -813.60 -0.10
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.
19GS187 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.359 39.551 39.180 ecceobj 0.211 0.219 0.202 incobj 10.710 10.709 10.712 qmin 30.431 29.955 30.681 qmax 48.980 49.868 49.032 amean 39.456 39.457 39.457 amin 39.017 38.895 38.903 amax 39.979 40.123 40.069 emean 0.204 0.214 0.201 emin 0.180 0.182 0.177 emax 0.227 0.243 0.225 imean 10.497 9.473 10.276 imin 9.803 7.792 9.634 imax 11.510 11.072 10.797 excite_mean 0.274 0.271 0.269 fracstop 1.000 1.000 1.000 cjmean 2.967 2.969 2.970 libcent 0 180.0 179.5 180.7 libamp 0 86.4 133.1 130.7 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 183.6 241.3 173.2 kozaiamp 180.0 180.0 180.0