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: 19CQ31
# Created Mon Apr 28 01:11:13 2025
# Orbit generated from Bernstein formalism
# Fitting 14 observations of 14
# Arc: 1.05y
# First observation: 2018/03/18
# Last observation: 2019/04/06
Preliminary a, adot, b, bdot, g, gdot:
-0.000046 0.024712 -0.000002 0.000377 0.024446 0.000000
# Chi-squared of fit: 6.13 DOF: 22 RMS: 0.12
# Min/Max residuals: -0.21 0.31
# Exact a, adot, b, bdot, g, gdot:
1.619443E-05 2.472531E-02 -3.193592E-07 3.775391E-04 2.468391E-02 8.695298E-04
# Covariance matrix:
1.4091E-12 2.9423E-12 9.0487E-15 4.8888E-14 3.2133E-12 1.7919E-10
2.9423E-12 2.5244E-11 4.9894E-14 3.0887E-13 1.9386E-11 1.1336E-09
9.0487E-15 4.9894E-14 7.9239E-13 -8.3162E-13 4.8464E-14 2.4500E-12
4.8888E-14 3.0887E-13 -8.3162E-13 1.0128E-12 2.5230E-13 1.4518E-11
3.2133E-12 1.9386E-11 4.8464E-14 2.5230E-13 1.6806E-11 9.2442E-10
1.7919E-10 1.1336E-09 2.4500E-12 1.4518E-11 9.2442E-10 5.3263E-08
# lat0 lon0 xBary yBary zBary JD0
4.185665 179.063899 0.031117 0.072621 -0.991212 2458196.058121
# Heliocentric elements and errors
Epoch: 2458190.5000 = 2018/03/13
Mean Anomaly: 26.41912 +/- 6.176
Argument of Peri: 47.61528 +/- 7.252
Long of Asc Node: 101.27364 +/- 0.034
Inclination: 4.18016 +/- 0.000
Eccentricity: 0.06773598 +/- 0.0049
Semi-Major Axis: 44.13769830 +/- 0.0211
Time of Perihelion: 2450330.3882 +/- 1837.4
Perihelion: 41.14798827 +/- 0.2166
Aphelion: 47.12740833 +/- 0.2169
Period (y) 293.2397 +/- 0.21
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.39335129 +/- 0.0067
Ecliptic Y 0.70029601 +/- 0.0001
Ecliptic Z 2.95694897 +/- 0.0005
Ecliptic XDOT -0.00013156 +/- 0.0000
Ecliptic YDOT -0.00274504 +/- 0.0000
Ecliptic ZDOT 0.00004865 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.50474061 +/- 0.0067
Geocenter to KBO 40.51222628 +/- 0.0067
# Hcoef: 8.14
The following table shows the complete astrometric record for 19CQ31. 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 (19CQ31) followed by the observatory code and reference code for the source of the astrometry.
2018 03 18.557320 12 03 14.20 +04 12 43.2 19CQ31 T09 C~8Aix 2018 04 22.424355 12 00 45.10 +04 27 58.6 19CQ31 T09 C~8Aix 2019 02 05.55500 12 11 08.56 +03 20 31.6 24.0i 19CQ31 T09 C~8Aix 2019 02 05.59805 12 11 08.43 +03 20 32.6 23.9i 19CQ31 T09 C~8Aix 2019 02 05.62497 12 11 08.36 +03 20 33.2 23.9i 19CQ31 T09 C~8Aix 2019 02 05.64110 12 11 08.32 +03 20 33.6 24.0i 19CQ31 T09 C~8Aix 2019 02 28.574368 12 09 47.90 +03 30 50.4 19CQ31 T09 C~8Aix 2019 02 28.577748 12 09 47.89 +03 30 50.3 19CQ31 T09 C~8Aix 2019 03 03.51760 12 09 35.72 +03 32 17.1 24.6z 19CQ31 T09 C~8Aix 2019 03 03.53922 12 09 35.63 +03 32 17.7 24.0z 19CQ31 T09 C~8Aix 2019 03 03.54189 12 09 35.63 +03 32 17.9 24.4z 19CQ31 T09 C~8Aix 2019 04 04.446698 12 07 14.06 +03 47 57.2 19CQ31 T09 C~8Aix 2019 04 04.469928 12 07 13.96 +03 47 57.8 19CQ31 T09 C~8Aix 2019 04 06.303674 12 07 05.93 +03 48 47.4 19CQ31 T09 C~8Aix
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 -0.07 0.00 0.12
2 0.0955 -2410.27 0.07 -48.93 -0.16
3 0.8871 7763.44 0.06 -31.21 0.01
4 0.8872 7761.25 -0.01 -31.08 -0.03
5 0.8872 7760.05 0.11 -30.95 -0.01
6 0.8873 7759.34 0.20 -30.82 0.05
7 0.9501 6407.34 -0.12 51.80 0.31
8 0.9501 6407.25 0.02 51.65 0.15
9 0.9581 6205.34 -0.21 58.21 -0.12
10 0.9582 6203.87 -0.17 58.22 -0.14
11 0.9582 6203.79 -0.06 58.40 0.04
12 1.0456 3884.38 0.05 71.04 -0.06
13 1.0456 3882.76 0.12 70.99 -0.07
14 1.0506 3752.73 0.01 68.39 -0.09
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.
19CQ31 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 43.823 43.993 43.707 ecceobj 0.063 0.083 0.050 incobj 4.177 4.178 4.177 qmin 40.124 39.368 40.702 qmax 48.108 49.209 47.296 amean 43.982 44.145 43.872 amin 43.643 43.792 43.525 amax 44.354 44.532 44.235 emean 0.068 0.089 0.053 emin 0.052 0.071 0.037 emax 0.085 0.105 0.069 imean 2.589 2.642 2.546 imin 1.847 1.838 1.844 imax 3.252 3.361 3.205 excite_mean 0.082 0.100 0.069 fracstop 1.000 1.000 1.000 cjmean 3.093 3.091 3.094 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 177.9 175.7 181.2 kozaiamp 180.0 180.0 180.0