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: 19GD196 # Created Sun Dec 22 02:11:07 2024 # Orbit generated from Bernstein formalism # Fitting 25 observations of 25 # Arc: 3.89y # First observation: 2016/03/09 # Last observation: 2020/01/30 Preliminary a, adot, b, bdot, g, gdot: -0.001640 0.059061 -0.001445 0.028398 0.056555 0.000000 # Chi-squared of fit: 11.18 DOF: 44 RMS: 0.12 # Min/Max residuals: -0.32 0.34 # Exact a, adot, b, bdot, g, gdot: 1.660756E-05 5.494806E-02 8.725979E-06 2.633620E-02 5.093249E-02 -1.559769E-02 # Covariance matrix: 6.6480E-13 -4.0148E-13 5.9185E-14 -1.0343E-13 -1.0048E-13 -9.9856E-13 -4.0148E-13 6.4700E-13 -1.6334E-13 2.8588E-13 6.5280E-13 2.7531E-12 5.9185E-14 -1.6334E-13 5.7864E-13 -2.6588E-13 -1.9176E-13 -7.8254E-13 -1.0343E-13 2.8588E-13 -2.6588E-13 2.1331E-13 3.3605E-13 1.3697E-12 -1.0048E-13 6.5280E-13 -1.9176E-13 3.3605E-13 1.1546E-12 3.2293E-12 -9.9856E-13 2.7531E-12 -7.8254E-13 1.3697E-12 3.2293E-12 1.3189E-11 # lat0 lon0 xBary yBary zBary JD0 -1.569973 171.697595 0.048321 -0.026928 -0.988180 2457456.919852 # Heliocentric elements and errors Epoch: 2457450.5000 = 2016/03/03 Mean Anomaly: 244.53643 +/- 0.018 Argument of Peri: 138.86652 +/- 0.010 Long of Asc Node: 174.68790 +/- 0.000 Inclination: 25.62446 +/- 0.000 Eccentricity: 0.31574174 +/- 0.0000 Semi-Major Axis: 17.18439827 +/- 0.0011 Time of Perihelion: 2465795.8088 +/- 1.0 Perihelion: 11.75856645 +/- 0.0009 Aphelion: 22.61023010 +/- 0.0015 Period (y) 71.2377 +/- 0.01 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -20.39580295 +/- 0.0004 Ecliptic Y 3.02237546 +/- 0.0001 Ecliptic Z -0.53774576 +/- 0.0000 Ecliptic XDOT 0.00036434 +/- 0.0000 Ecliptic YDOT -0.00304515 +/- 0.0000 Ecliptic ZDOT 0.00143814 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 20.62553519 +/- 0.0004 Geocenter to KBO 19.63383294 +/- 0.0004 # Hcoef: 11.59
The following table shows the complete astrometric record for 19GD196. 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 (19GD196) followed by the observatory code and reference code for the source of the astrometry.
2016 03 09.419063 11 27 01.21 +01 50 59.3 19GD196 T09 C~8Mhn 2016 03 09.563325 11 26 59.91 +01 51 10.0 19GD196 T09 C~8Mhn 2018 03 18.449263 11 54 40.11 +02 18 45.0 19GD196 T09 C~8Mhn 2018 03 18.568015 11 54 39.02 +02 18 54.1 19GD196 T09 C~8Mhn 2018 04 24.35876 11 49 34.05 +03 01 27.6 24.1z 19GD196 T09 C~8Mhn 2018 04 24.36214 11 49 34.01 +03 01 27.8 24.0z 19GD196 T09 C~8Mhn 2018 04 24.40415 11 49 33.74 +03 01 30.1 24.2z 19GD196 T09 C~8Mhn 2018 04 24.43452 11 49 33.52 +03 01 32.0 24.5z 19GD196 T09 C~8Mhn 2018 04 24.49071 11 49 33.15 +03 01 35.0 24.6z 19GD196 T09 C~8Mhn 2019 02 05.537827 12 15 09.59 +01 37 39.4 19GD196 T09 C~8Mhn 2019 02 28.557381 12 12 33.59 +02 03 47.4 19GD196 T09 C~8Mhn 2019 02 28.560759 12 12 33.57 +02 03 47.5 19GD196 T09 C~8Mhn 2019 02 28.610573 12 12 33.14 +02 03 51.2 19GD196 T09 C~8Mho 2019 03 03.568728 12 12 08.80 +02 07 35.2 19GD196 T09 C~8Mho 2019 03 03.608930 12 12 08.46 +02 07 38.3 19GD196 T09 C~8Mho 2019 04 04.44671 12 07 22.88 +02 48 31.4 25.2g 19GD196 T09 C~8Mho 2019 04 04.45724 12 07 22.76 +02 48 32.1 25.2g 19GD196 T09 C~8Mho 2019 04 04.49094 12 07 22.46 +02 48 34.6 24.9g 19GD196 T09 C~8Mho 2019 04 04.51189 12 07 22.27 +02 48 35.9 24.8g 19GD196 T09 C~8Mho 2019 04 05.52031 12 07 13.29 +02 49 49.9 24.5r 19GD196 T09 C~8Mho 2019 04 05.55382 12 07 13.01 +02 49 52.6 24.5r 19GD196 T09 C~8Mho 2019 04 05.57477 12 07 12.80 +02 49 53.8 24.4r 19GD196 T09 C~8Mho 2019 04 06.303674 12 07 06.40 +02 50 46.9 19GD196 T09 C~8Mho 2019 04 06.333119 12 07 06.14 +02 50 49.0 19GD196 T09 C~8Mho 2020 01 30.649939 12 31 13.73 +01 38 39.0 19GD196 T09 C~8Mho
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 0.09 0.00 -0.11
2 0.0004 -22.13 0.02 2.16 0.09
3 2.0234 22286.13 -0.01 11426.58 -0.07
4 2.0237 22267.28 0.03 11428.39 -0.01
5 2.1244 17004.68 -0.08 11943.55 0.08
6 2.1244 17004.05 -0.32 11943.49 -0.02
7 2.1245 16999.39 0.01 11943.99 0.00
8 2.1246 16995.58 -0.20 11944.41 0.09
9 2.1248 16989.25 0.10 11944.95 -0.02
10 2.9107 40667.13 -0.01 16696.18 -0.08
11 2.9737 37790.92 -0.09 17188.64 0.01
12 2.9737 37790.60 0.09 17188.61 -0.08
13 2.9738 37782.94 -0.16 17189.38 -0.23
14 2.9819 37343.87 0.03 17246.84 0.08
15 2.9820 37337.75 0.05 17247.61 0.13
16 3.0692 32280.42 0.25 17758.59 0.15
17 3.0692 32278.44 -0.06 17758.50 -0.07
18 3.0693 32273.18 0.02 17758.97 -0.00
19 3.0694 32269.96 0.12 17759.00 -0.22
20 3.0721 32112.86 -0.06 17772.18 -0.04
21 3.0722 32107.80 0.14 17772.95 0.34
22 3.0723 32104.34 -0.04 17772.77 -0.10
23 3.0743 31992.26 0.05 17782.49 0.08
24 3.0744 31987.73 0.14 17782.84 0.07
25 3.8939 54725.69 -0.13 22902.13 -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.
19GD196 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 17.140 17.142 17.138 ecceobj 0.318 0.318 0.318 incobj 25.708 25.708 25.708 qmin 10.785 11.422 10.877 qmax 23.259 22.953 23.824 amean 16.767 17.144 17.112 amin 15.956 16.928 16.923 amax 17.436 17.328 17.390 emean 0.323 0.318 0.334 emin 0.288 0.310 0.300 emax 0.362 0.332 0.371 imean 26.159 25.388 25.659 imin 24.599 25.090 24.934 imax 27.647 25.663 26.435 excite_mean 0.547 0.534 0.547 fracstop 0.015 0.005 0.009 cjmean 3.063 3.054 3.043 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 228.8 179.8 228.1 kozaiamp 179.5 44.8 79.3