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: 19GP188 # Created Sun Dec 22 02:11:07 2024 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 83.97d # First observation: 2019/01/11 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: -0.000003 0.010716 -0.000004 0.002795 0.018134 0.000000 # Chi-squared of fit: 2.96 DOF: 16 RMS: 0.09 # Min/Max residuals: -0.18 0.21 # Exact a, adot, b, bdot, g, gdot: 1.248211E-05 1.439259E-02 2.502198E-06 2.882773E-03 1.867942E-02 -1.011586E-03 # Covariance matrix: 7.6380E-13 3.8405E-11 4.7137E-14 1.4078E-12 8.9183E-12 4.1048E-10 3.8405E-11 5.0580E-08 5.6428E-11 1.5667E-09 9.9080E-09 2.4579E-07 4.7137E-14 5.6428E-11 7.3260E-13 -1.4776E-12 1.1066E-11 2.7666E-10 1.4078E-12 1.5667E-09 -1.4776E-12 6.8153E-11 3.0852E-10 8.0254E-09 8.9183E-12 9.9080E-09 1.1066E-11 3.0852E-10 1.9513E-09 5.0806E-08 4.1048E-10 2.4579E-07 2.7666E-10 8.0254E-09 5.0806E-08 1.9176E-06 # lat0 lon0 xBary yBary zBary JD0 -5.635326 168.014158 0.834319 -0.052379 -0.531720 2458495.049041 # Heliocentric elements and errors Epoch: 2458490.5000 = 2019/01/07 Mean Anomaly: 214.86538 +/- 21.022 Argument of Peri: 128.05379 +/- 21.004 Long of Asc Node: 193.22091 +/- 0.337 Inclination: 12.52461 +/- 0.147 Eccentricity: 0.17282091 +/- 0.0508 Semi-Major Axis: 47.02762693 +/- 0.4474 Time of Perihelion: 2505979.8857 +/- 6845.1 Perihelion: 38.90026970 +/- 2.4183 Aphelion: 55.15498416 +/- 2.4468 Period (y) 322.5060 +/- 4.60 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -52.46332881 +/- 0.1232 Ecliptic Y 11.98283618 +/- 0.0262 Ecliptic Z -5.25683306 +/- 0.0124 Ecliptic XDOT -0.00032642 +/- 0.0002 Ecliptic YDOT -0.00208745 +/- 0.0000 Ecliptic ZDOT 0.00043484 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 54.07054213 +/- 0.1197 Geocenter to KBO 53.53484139 +/- 0.1266 # Hcoef: 6.32
The following table shows the complete astrometric record for 19GP188. 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 (19GP188) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.54824 11 07 07.35 -00 27 06.7 23.4z 19GP188 T09 C~8HRL 2019 01 11.57887 11 07 07.30 -00 27 06.5 23.8z 19GP188 T09 C~8HRL 2019 03 15.35287 11 03 54.11 -00 07 59.6 23.3y 19GP188 T09 C~8HRL 2019 03 15.39755 11 03 53.93 -00 07 58.6 23.1y 19GP188 T09 C~8HRM 2019 03 15.42746 11 03 53.82 -00 07 57.9 23.4y 19GP188 T09 C~8HRM 2019 03 15.43832 11 03 53.77 -00 07 57.6 23.1y 19GP188 T09 C~8HRM 2019 04 05.39521 11 02 44.08 +00 00 41.7 23.7r 19GP188 T09 C~8HRM 2019 04 05.47099 11 02 43.85 +00 00 43.4 23.7r 19GP188 T09 C~8HRM 2019 04 05.47309 11 02 43.84 +00 00 43.5 23.8r 19GP188 T09 C~8HRM 2019 04 05.50535 11 02 43.75 +00 00 44.4 23.6r 19GP188 T09 C~8HRM 2019 04 05.51582 11 02 43.71 +00 00 44.7 23.4r 19GP188 T09 C~8HRM
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 -0.06 0.00 -0.01
2 0.0001 -0.77 0.06 -0.11 0.01
3 0.1719 -3116.71 0.21 -71.32 0.20
4 0.1721 -3119.59 -0.01 -71.45 -0.02
5 0.1722 -3121.38 -0.02 -71.45 -0.07
6 0.1722 -3122.19 -0.18 -71.46 -0.11
7 0.2296 -4287.60 -0.04 0.07 -0.01
8 0.2298 -4291.44 0.06 0.29 -0.10
9 0.2298 -4291.62 -0.01 0.33 -0.08
10 0.2299 -4293.22 0.06 0.63 0.09
11 0.2299 -4293.88 -0.07 0.67 0.09
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.
19GP188 quality flag:1 Type: SCATEXTD SCATEXTD SCATNEAR axisobj 46.878 50.283 45.504 ecceobj 0.174 0.163 0.225 incobj 12.586 12.158 12.896 qmin 38.209 41.510 34.516 qmax 56.287 59.665 57.501 amean 47.029 50.378 45.726 amin 46.618 49.930 45.237 amax 47.526 50.866 46.351 emean 0.171 0.162 0.224 emin 0.158 0.151 0.205 emax 0.186 0.173 0.244 imean 12.932 12.252 13.602 imin 12.433 11.987 12.585 imax 13.370 12.544 14.444 excite_mean 0.282 0.267 0.325 fracstop 1.000 1.000 1.000 cjmean 3.040 3.092 2.993 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 178.9 179.8 182.1 kozaiamp 179.9 180.0 179.9