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: 19GP186 # Created Sun Apr 27 01:11:15 2025 # Orbit generated from Bernstein formalism # Fitting 11 observations of 11 # Arc: 83.89d # First observation: 2019/01/11 # Last observation: 2019/04/05 Preliminary a, adot, b, bdot, g, gdot: 0.000000 0.018479 0.000001 0.009685 0.020786 0.000000 # Chi-squared of fit: 1.43 DOF: 16 RMS: 0.06 # Min/Max residuals: -0.16 0.10 # Exact a, adot, b, bdot, g, gdot: 1.331122E-05 1.762622E-02 7.502670E-06 9.595222E-03 2.049725E-02 -1.000865E-02 # Covariance matrix: 4.0030E-13 4.1713E-11 6.2763E-14 2.5112E-12 1.0841E-11 8.1316E-10 4.1713E-11 5.4407E-08 8.1912E-11 2.3743E-09 1.2159E-08 6.5637E-07 6.2763E-14 8.1912E-11 3.7202E-13 2.2170E-12 1.8290E-11 9.8326E-10 2.5112E-12 2.3743E-09 2.2170E-12 1.2265E-10 5.3732E-10 3.0229E-08 1.0841E-11 1.2159E-08 1.8290E-11 5.3732E-10 2.7308E-09 1.4977E-07 8.1316E-10 6.5637E-07 9.8326E-10 3.0229E-08 1.4977E-07 8.6536E-06 # lat0 lon0 xBary yBary zBary JD0 -5.871760 164.265763 0.797496 -0.060051 -0.584765 2458495.059341 # Heliocentric elements and errors Epoch: 2458490.5000 = 2019/01/07 Mean Anomaly: 344.27507 +/- 7.809 Argument of Peri: 61.53207 +/- 6.202 Long of Asc Node: 173.80092 +/- 0.153 Inclination: 29.23988 +/- 0.361 Eccentricity: 0.63965223 +/- 0.1587 Semi-Major Axis: 98.77203004 +/- 32.5558 Time of Perihelion: 2474152.0805 +/- 730.6 Perihelion: 35.59228063 +/- 19.5819 Aphelion: 161.95177945 +/- 55.6351 Period (y) 981.6557 +/- 485.34 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -47.06152348 +/- 0.1191 Ecliptic Y 14.07940082 +/- 0.0336 Ecliptic Z -4.99069087 +/- 0.0127 Ecliptic XDOT 0.00052329 +/- 0.0004 Ecliptic YDOT -0.00259311 +/- 0.0001 Ecliptic ZDOT 0.00141149 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 49.37533306 +/- 0.1139 Geocenter to KBO 48.78703194 +/- 0.1244 # Hcoef: 7.66
The following table shows the complete astrometric record for 19GP186. 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 (19GP186) followed by the observatory code and reference code for the source of the astrometry.
2019 01 11.55854 10 52 59.76 +00 46 12.5 24.8z 19GP186 T09 C~870l 2019 01 11.58440 10 52 59.70 +00 46 12.9 24.2z 19GP186 T09 C~870l 2019 01 11.59806 10 52 59.67 +00 46 13.0 24.1z 19GP186 T09 C~870l 2019 01 11.62511 10 52 59.61 +00 46 13.4 24.0z 19GP186 T09 C~870l 2019 02 04.52284 10 51 53.39 +00 53 16.1 25.3g 19GP186 T09 C~870l 2019 02 04.52563 10 51 53.38 +00 53 16.4 25.1g 19GP186 T09 C~870l 2019 02 04.54623 10 51 53.31 +00 53 16.9 25.3g 19GP186 T09 C~870l 2019 02 04.55689 10 51 53.27 +00 53 17.1 25.1g 19GP186 T09 C~870l 2019 04 05.40376 10 48 18.24 +01 21 27.2 24.8r 19GP186 T09 C~870l 2019 04 05.44374 10 48 18.12 +01 21 28.2 24.2r 19GP186 T09 C~870l 2019 04 05.44583 10 48 18.11 +01 21 28.5 24.5r 19GP186 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 0.06 0.00 -0.02
2 0.0001 -0.98 -0.02 0.02 0.03
3 0.0001 -1.44 0.00 -0.05 -0.03
4 0.0002 -2.42 -0.04 -0.03 0.02
5 0.0656 -1081.79 0.09 10.19 -0.16
6 0.0656 -1082.04 -0.01 10.41 0.05
7 0.0657 -1083.20 -0.02 10.47 0.09
8 0.0657 -1083.83 -0.06 10.42 0.03
9 0.2296 -4710.78 -0.02 337.75 0.01
10 0.2297 -4712.82 0.08 337.99 -0.11
11 0.2297 -4713.08 -0.06 338.21 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.
19GP186 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0