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: 19CR31
# Created Mon Apr 28 01:11:13 2025
# Orbit generated from Bernstein formalism
# Fitting 9 observations of 9
# Arc: 57.93d
# First observation: 2019/02/05
# Last observation: 2019/04/04
Preliminary a, adot, b, bdot, g, gdot:
-0.000001 0.028071 -0.000001 0.000780 0.025825 0.000000
# Chi-squared of fit: 3.81 DOF: 12 RMS: 0.11
# Min/Max residuals: -0.17 0.18
# Exact a, adot, b, bdot, g, gdot:
1.546017E-05 2.594827E-02 6.053940E-08 8.271761E-04 2.527142E-02 -4.407160E-03
# Covariance matrix:
4.3784E-13 1.2126E-10 -6.1674E-14 -3.1745E-12 2.6596E-11 1.5726E-09
1.2126E-10 2.1079E-07 -1.0025E-10 -5.5389E-09 4.3701E-08 2.1751E-06
-6.1674E-14 -1.0025E-10 3.6886E-13 3.1055E-13 -2.0849E-11 -1.0540E-09
-3.1745E-12 -5.5389E-09 3.1055E-13 1.7947E-10 -1.1469E-09 -5.6673E-08
2.6596E-11 4.3701E-08 -2.0849E-11 -1.1469E-09 9.0828E-09 4.5752E-07
1.5726E-09 2.1751E-06 -1.0540E-09 -5.6673E-08 4.5752E-07 2.4438E-05
# lat0 lon0 xBary yBary zBary JD0
4.677600 -176.242153 0.735259 0.054361 -0.663607 2458520.062551
# Heliocentric elements and errors
Epoch: 2458520.5000 = 2019/02/06
Mean Anomaly: 311.09057 +/- 8.625
Argument of Peri: 138.52304 +/- 24.967
Long of Asc Node: 115.29240 +/- 0.560
Inclination: 4.97933 +/- 0.020
Eccentricity: 0.21635072 +/- 0.1806
Semi-Major Axis: 45.18671693 +/- 2.5411
Time of Perihelion: 2473593.6733 +/- 2334.2
Perihelion: 35.41053803 +/- 8.3995
Aphelion: 54.96289583 +/- 8.7258
Period (y) 303.7557 +/- 25.62
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -40.06530643 +/- 0.1484
Ecliptic Y -1.90286161 +/- 0.0097
Ecliptic Z 3.22690866 +/- 0.0122
Ecliptic XDOT 0.00067443 +/- 0.0005
Ecliptic YDOT -0.00277512 +/- 0.0001
Ecliptic ZDOT 0.00005017 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 40.24006215 +/- 0.1478
Geocenter to KBO 39.57038946 +/- 0.1492
# Hcoef: 7.67
The following table shows the complete astrometric record for 19CR31. 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 (19CR31) followed by the observatory code and reference code for the source of the astrometry.
2019 02 05.56175 12 21 13.51 +02 47 57.2 23.2i 19CR31 T09 C~8HR5 2019 02 05.58976 12 21 13.42 +02 47 57.9 23.3i 19CR31 T09 C~8HR5 2019 02 05.60340 12 21 13.38 +02 47 58.0 23.4i 19CR31 T09 C~8HR5 2019 02 05.63031 12 21 13.30 +02 47 58.9 23.2i 19CR31 T09 C~8HR5 2019 03 03.58751 12 19 42.19 +03 00 03.0 23.3z 19CR31 T09 C~8HR5 2019 03 03.64387 12 19 41.93 +03 00 04.8 22.9z 19CR31 T09 C~8HR5 2019 04 04.45230 12 17 17.88 +03 16 22.1 24.7g 19CR31 T09 C~8HR5 2019 04 04.46143 12 17 17.82 +03 16 22.3 24.8g 19CR31 T09 C~8HR5 2019 04 04.49512 12 17 17.67 +03 16 23.6 24.5g 19CR31 T09 C~8HR5
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 0.16 0.00 0.09
2 0.0001 -1.52 -0.03 0.11 0.05
3 0.0001 -2.11 0.03 -0.04 -0.17
4 0.0002 -3.56 -0.16 0.31 0.03
5 0.0713 -1543.82 0.15 122.63 0.03
6 0.0714 -1548.11 -0.15 122.74 -0.03
7 0.1585 -3916.74 0.16 163.65 -0.01
8 0.1585 -3917.64 -0.06 163.47 -0.17
9 0.1586 -3920.22 -0.10 163.78 0.18
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.
19CR31 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