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: 19EB5 # Created Sun Apr 27 01:11:13 2025 # Orbit generated from Bernstein formalism # Fitting 6 observations of 6 # Arc: 0.82y # First observation: 2019/03/04 # Last observation: 2019/12/27 Preliminary a, adot, b, bdot, g, gdot: -0.000007 0.014180 0.000002 -0.001457 0.017046 0.000000 # Chi-squared of fit: 0.89 DOF: 6 RMS: 0.07 # Min/Max residuals: -0.12 0.11 # Exact a, adot, b, bdot, g, gdot: 1.193135E-05 1.327205E-02 -8.033461E-07 -1.486982E-03 1.773141E-02 -4.374572E-03 # Covariance matrix: 7.7299E-13 1.6631E-11 9.2347E-15 -7.6430E-13 6.1353E-12 8.5667E-10 1.6631E-11 7.6517E-09 4.0049E-12 -3.3442E-10 2.6942E-09 3.7413E-07 9.2347E-15 4.0049E-12 7.3468E-13 -1.1100E-12 1.3875E-12 1.9476E-10 -7.6430E-13 -3.3442E-10 -1.1100E-12 1.6581E-11 -1.2001E-10 -1.6462E-08 6.1353E-12 2.6942E-09 1.3875E-12 -1.2001E-10 9.8036E-10 1.3328E-07 8.5667E-10 3.7413E-07 1.9476E-10 -1.6462E-08 1.3328E-07 1.8370E-05 # lat0 lon0 xBary yBary zBary JD0 -5.154992 139.985685 -0.382612 -0.082437 -0.914699 2458546.641321 # Heliocentric elements and errors Epoch: 2458540.5000 = 2019/02/26 Mean Anomaly: 271.35391 +/- 45.307 Argument of Peri: 342.13269 +/- 25.563 Long of Asc Node: 281.92149 +/- 0.073 Inclination: 8.12392 +/- 0.012 Eccentricity: 0.32007829 +/- 0.2225 Semi-Major Axis: 52.59961077 +/- 8.2500 Time of Perihelion: 2492851.1783 +/- 15568.0 Perihelion: 35.76361736 +/- 12.9797 Aphelion: 69.43560418 +/- 15.9880 Period (y) 381.4890 +/- 89.75 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -43.96748484 +/- 0.0760 Ecliptic Y 36.40489562 +/- 0.0638 Ecliptic Z -5.06737516 +/- 0.0090 Ecliptic XDOT -0.00077845 +/- 0.0005 Ecliptic YDOT -0.00201672 +/- 0.0004 Ecliptic ZDOT -0.00016819 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 57.30736810 +/- 0.0710 Geocenter to KBO 56.39708071 +/- 0.0996 # Hcoef: 6.84
The following table shows the complete astrometric record for 19EB5. 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 (19EB5) followed by the observatory code and reference code for the source of the astrometry.
2019 03 04.14052 09 22 59.420 +09 55 15.96 24.5r 19EB5 807 C~4Za0 2019 03 05.13498 09 22 56.186 +09 55 33.14 24.7r 19EB5 807 C~4Za0 2019 12 01.31479 09 30 16.873 +09 19 19.11 24.2r 19EB5 304 C~4Za0 2019 12 02.33961 09 30 15.957 +09 19 16.65 24.1r 19EB5 304 C~4Za0 2019 12 27.31289 09 29 33.208 +09 20 17.59 19EB5 304 C~4Za0 2019 12 27.36150 09 29 33.088 +09 20 17.82 19EB5 304 C~4Za0
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 -0.02 0.00 -0.11
2 0.0027 -50.75 0.02 1.56 0.11
3 0.7452 6821.93 -0.00 -31.94 0.11
4 0.7480 6809.82 0.00 -38.54 -0.12
5 0.8164 6189.33 -0.03 -179.48 0.05
6 0.8165 6187.57 0.02 -179.82 -0.04
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.
19EB5 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