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: 19EV5
# Created Tue Jan 21 02:11:19 2025
# Orbit generated from Bernstein formalism
# Fitting 8 observations of 8
# Arc: 2.01y
# First observation: 2019/03/05
# Last observation: 2021/03/09
Preliminary a, adot, b, bdot, g, gdot:
-0.000051 0.010280 -0.000001 0.000587 0.015527 0.000000
# Chi-squared of fit: 3.48 DOF: 10 RMS: 0.12
# Min/Max residuals: -0.21 0.20
# Exact a, adot, b, bdot, g, gdot:
1.133243E-05 1.035413E-02 6.516503E-07 5.918718E-04 1.574250E-02 4.634273E-03
# Covariance matrix:
4.0415E-13 -3.1643E-12 5.8383E-14 -1.7435E-13 -3.9663E-13 -1.5004E-10
-3.1643E-12 1.2610E-10 -2.4634E-12 7.4195E-12 1.7642E-11 6.3852E-09
5.8383E-14 -2.4634E-12 3.8293E-13 -3.5090E-13 -3.2461E-13 -1.2490E-10
-1.7435E-13 7.4195E-12 -3.5090E-13 7.2321E-13 1.0461E-12 3.7659E-10
-3.9663E-13 1.7642E-11 -3.2461E-13 1.0461E-12 3.3083E-12 9.0027E-10
-1.5004E-10 6.3852E-09 -1.2490E-10 3.7659E-10 9.0027E-10 3.2409E-07
# lat0 lon0 xBary yBary zBary JD0
8.317357 169.156459 0.092386 0.143374 -0.980372 2458547.869951
# Heliocentric elements and errors
Epoch: 2458540.5000 = 2019/02/26
Mean Anomaly: 88.06416 +/- 7.438
Argument of Peri: 294.95013 +/- 3.683
Long of Asc Node: 101.52724 +/- 0.044
Inclination: 8.85158 +/- 0.003
Eccentricity: 0.42660169 +/- 0.0278
Semi-Major Axis: 55.97618996 +/- 1.7294
Time of Perihelion: 2421120.8169 +/- 2642.3
Perihelion: 32.09665299 +/- 1.8441
Aphelion: 79.85572694 +/- 2.9162
Period (y) 418.8063 +/- 19.41
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -62.68647556 +/- 0.0071
Ecliptic Y 12.09350256 +/- 0.0014
Ecliptic Z 9.18891516 +/- 0.0011
Ecliptic XDOT -0.00109922 +/- 0.0001
Ecliptic YDOT -0.00162272 +/- 0.0000
Ecliptic ZDOT 0.00021823 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 64.50025724 +/- 0.0069
Geocenter to KBO 63.52229712 +/- 0.0073
# Hcoef: 7.49
The following table shows the complete astrometric record for 19EV5. 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 (19EV5) followed by the observatory code and reference code for the source of the astrometry.
2019 03 05.36915 11 33 24.764 +11 55 58.24 25.4r 19EV5 568 C~5JzK 2019 03 05.54179 11 33 24.232 +11 56 01.80 25.3r 19EV5 568 C~5JzK 2019 04 04.41962 11 31 52.274 +12 05 17.58 19EV5 568 C~5JzK 2019 04 04.51092 11 31 51.997 +12 05 18.93 19EV5 568 C~5JzK 2019 12 27.32353 11 37 56.680 +11 22 33.25 25.5r 19EV5 304 C~5JzK 2019 12 28.33144 11 37 56.312 +11 22 44.13 25.6r 19EV5 304 C~5JzK 2021 03 09.17502 11 37 41.624 +11 32 57.01 25.6G 19EV5 304 C~5JzK 2021 03 09.23217 11 37 41.455 +11 32 58.52 25.4G 19EV5 304 C~5JzK
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 -0.19 0.00 -0.01
2 0.0005 -8.58 0.02 0.15 -0.01
3 0.0823 -1467.50 0.12 -28.01 0.08
4 0.0825 -1471.76 0.01 -28.39 0.00
5 0.8130 4464.13 0.16 -234.19 0.11
6 0.8158 4454.79 -0.09 -226.41 -0.21
7 2.0118 4010.07 -0.02 247.64 -0.17
8 2.0119 4007.18 -0.01 248.02 0.20
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.
19EV5 quality flag:1 Type: REMOVED 3:1EE CENTAURR axisobj 56.083 62.553 52.190 ecceobj 0.433 0.515 0.365 incobj 8.832 8.841 8.824 qmin 30.410 29.756 30.236 qmax 111.637 97.509 76.725 amean 61.042 62.630 47.807 amin 48.087 61.665 38.576 amax 71.863 63.930 54.068 emean 0.473 0.513 0.326 emin 0.359 0.503 0.192 emax 0.554 0.526 0.426 imean 3.200 6.786 5.275 imin 0.286 6.316 1.057 imax 8.638 7.311 8.190 excite_mean 0.479 0.527 0.340 fracstop 0.620 1.000 0.667 cjmean 2.990 2.939 3.001 libcent 0 -180.0 284.4 -180.0 libamp 0 -180.0 40.3 -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 195.1 179.4 176.5 kozaiamp 180.0 180.0 180.0