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: 19EO9
# Created Wed May 21 01:11:17 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 30 observations of 30
# Arc: 18.34y
# First observation: 2006/12/21
# Last observation: 2025/04/23
# Chi-squared of fit: 149.62 DOF: 54 RMS: 0.39
# Min/Max residuals: -0.63 1.97
# Exact a, adot, b, bdot, g, gdot:
1.611380E-05 2.288783E-02 8.458575E-07 7.033666E-04 2.355030E-02 -1.408117E-03
# Covariance matrix:
4.8883E-13 -6.6759E-14 3.9383E-15 -1.2668E-15 -1.8464E-14 -9.1871E-14
-6.6759E-14 1.7955E-14 -1.6733E-15 4.0566E-16 3.0372E-14 3.2809E-14
3.9383E-15 -1.6733E-15 3.7510E-13 -2.8779E-14 -3.7909E-15 -3.4555E-15
-1.2668E-15 4.0566E-16 -2.8779E-14 2.5233E-15 5.4371E-17 1.0083E-15
-1.8464E-14 3.0372E-14 -3.7909E-15 5.4371E-17 2.1576E-13 3.3727E-14
-9.1871E-14 3.2809E-14 -3.4555E-15 1.0083E-15 3.3727E-14 7.5765E-14
# lat0 lon0 xBary yBary zBary JD0
3.270020 164.584903 0.955334 0.014460 -0.251095 2454091.086754
# Heliocentric elements and errors
Epoch: 2454090.5000 = 2006/12/21
Mean Anomaly: 293.75413 +/- 0.027
Argument of Peri: 136.68133 +/- 0.033
Long of Asc Node: 102.83047 +/- 0.002
Inclination: 3.73353 +/- 0.000
Eccentricity: 0.09061157 +/- 0.0000
Semi-Major Axis: 44.01325069 +/- 0.0034
Time of Perihelion: 2473716.4137 +/- 12.8
Perihelion: 40.02514083 +/- 0.0032
Aphelion: 48.00136056 +/- 0.0038
Period (y) 292.0003 +/- 0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -40.85920100 +/- 0.0008
Ecliptic Y 12.25162380 +/- 0.0002
Ecliptic Z 2.42214620 +/- 0.0001
Ecliptic XDOT -0.00053994 +/- 0.0000
Ecliptic YDOT -0.00261379 +/- 0.0000
Ecliptic ZDOT 0.00007223 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.72526383 +/- 0.0008
Geocenter to KBO 42.46236673 +/- 0.0008
# Hcoef: 7.85
The following table shows the complete astrometric record for 19EO9. 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 (19EO9) followed by the observatory code and reference code for the source of the astrometry.
2006 12 21.586000 11 08 19.15 +09 05 05.2 19EO9 T09 C~8Mhh 2006 12 21.589500 11 08 19.15 +09 05 05.3 19EO9 T09 C~8Mhh 2006 12 21.619572 11 08 19.16 +09 05 05.3 19EO9 T09 C~8Mhh 2018 02 11.654405 12 02 00.50 +03 47 41.5 19EO9 T09 C~8Mhh 2018 03 18.584037 11 59 37.68 +04 04 28.3 19EO9 T09 C~8Mhh 2018 03 18.600070 11 59 37.61 +04 04 28.9 19EO9 T09 C~8Mhh 2018 04 24.379218 11 57 03.35 +04 20 16.8 19EO9 T09 C~8Mhh 2018 04 24.37966 11 57 03.37 +04 20 16.8 23.4z 19EO9 T09 C~8Mhh 2018 04 24.38261 11 57 03.33 +04 20 16.8 23.6z 19EO9 T09 C~8Mhh 2018 04 24.38303 11 57 03.35 +04 20 16.8 23.6z 19EO9 T09 C~8Mhh 2018 04 24.42024 11 57 03.19 +04 20 17.7 24.0z 19EO9 T09 C~8Mhh 2018 04 24.42066 11 57 03.21 +04 20 17.7 24.0z 19EO9 T09 C~8Mhh 2018 04 24.453254 11 57 03.09 +04 20 18.3 19EO9 T09 C~8Mhh 2018 04 24.45369 11 57 03.10 +04 20 18.2 23.8z 19EO9 T09 C~8Mhh 2018 04 24.50409 11 57 03.04 +04 20 18.8 23.3z 19EO9 T09 C~8Mhh 2018 04 24.50452 11 57 03.06 +04 20 18.8 23.3z 19EO9 T09 C~8Mhh 2019 02 05.55162 12 07 28.15 +03 13 04.4 24.0i 19EO9 T09 C~8Mhh 2019 02 05.59805 12 07 28.02 +03 13 05.4 24.3i 19EO9 T09 C~8Mhh 2019 02 05.62497 12 07 27.96 +03 13 06.0 24.3i 19EO9 T09 C~8Mhh 2019 02 05.63843 12 07 27.90 +03 13 06.2 24.3i 19EO9 T09 C~8Mhh 2019 02 28.574368 12 06 06.61 +03 23 17.0 19EO9 T09 C~8Mhh 2019 03 03.51493 12 05 54.39 +03 24 43.0 24.3z 19EO9 T09 C~8Mhh 2019 03 03.53922 12 05 54.32 +03 24 43.8 24.1z 19EO9 T09 C~8Mhh 2019 03 03.63045 12 05 53.90 +03 24 46.8 23.8z 19EO9 T09 C~8Mhh 2019 04 04.467836 12 03 33.01 +03 40 17.6 19EO9 T09 C~8Mhh 2019 04 04.490926 12 03 32.91 +03 40 18.3 19EO9 T09 C~8Mhh 2019 04 05.530772 12 03 28.38 +03 40 46.5 19EO9 T09 C~8Mhh 2025 04 23.277830 12 33 17.952 +00 32 42.05 23.8G 19EO9 G37 C~8swY 2025 04 23.315390 12 33 17.799 +00 32 43.35 19EO9 G37 C~8swY 2025 04 23.353810 12 33 17.628 +00 32 44.04 19EO9 G37 C~8swY
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 -0.17 0.00 -0.01
2 0.0000 0.00 -0.15 0.00 0.06
3 0.0001 0.00 0.24 0.00 -0.19
4 11.1432 0.00 -0.07 0.00 -0.25
5 11.2389 0.00 -0.12 0.00 -0.08
6 11.2389 0.00 -0.08 0.00 0.05
7 11.3396 0.00 -0.45 0.00 0.14
8 11.3396 0.00 -0.13 0.00 0.13
9 11.3396 0.00 -0.57 0.00 0.07
10 11.3396 0.00 -0.25 0.00 0.06
11 11.3397 0.00 -0.63 0.00 0.23
12 11.3397 0.00 -0.31 0.00 0.22
13 11.3398 0.00 -0.34 0.00 0.18
14 11.3398 0.00 -0.17 0.00 0.07
15 11.3400 0.00 1.64 0.00 -0.32
16 11.3400 0.00 1.97 0.00 -0.33
17 12.1258 0.00 -0.09 0.00 0.01
18 12.1260 0.00 0.02 0.00 -0.06
19 12.1260 0.00 0.31 0.00 -0.09
20 12.1261 0.00 0.00 0.00 -0.20
21 12.1889 0.00 0.07 0.00 0.18
22 12.1969 0.00 -0.23 0.00 -0.06
23 12.1970 0.00 0.28 0.00 0.03
24 12.1972 0.00 -0.17 0.00 0.34
25 12.2844 0.00 -0.22 0.00 -0.05
26 12.2845 0.00 -0.18 0.00 0.03
27 12.2873 0.00 -0.21 0.00 0.15
28 18.3373 0.00 0.02 0.00 -0.29
29 18.3374 0.00 0.06 0.00 0.12
30 18.3375 0.00 -0.13 0.00 -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.
19EO9 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.728 43.728 43.728 ecceobj 0.084 0.084 0.084 incobj 3.730 3.730 3.730 qmin 39.608 39.610 39.607 qmax 48.514 48.514 48.514 amean 43.917 43.917 43.917 amin 43.564 43.569 43.570 amax 44.298 44.293 44.295 emean 0.077 0.077 0.077 emin 0.061 0.061 0.061 emax 0.096 0.096 0.095 imean 1.987 1.987 1.987 imin 1.169 1.168 1.169 imax 2.698 2.699 2.699 excite_mean 0.085 0.085 0.085 fracstop 1.000 1.000 1.000 cjmean 3.092 3.092 3.092 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 189.9 189.8 190.2 kozaiamp 180.0 180.0 180.0