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: 19CQ30
# Created Tue Apr 1 01:11:11 2025
# Orbit generated from Bernstein formalism
# Fitting 16 observations of 16
# Arc: 1.05y
# First observation: 2018/03/18
# Last observation: 2019/04/04
Preliminary a, adot, b, bdot, g, gdot:
-0.000060 0.024426 -0.000001 0.000471 0.024276 0.000000
# Chi-squared of fit: 7.02 DOF: 26 RMS: 0.12
# Min/Max residuals: -0.22 0.27
# Exact a, adot, b, bdot, g, gdot:
1.588809E-05 2.438826E-02 3.090163E-07 4.709175E-04 2.447693E-02 -8.352466E-04
# Covariance matrix:
1.4183E-12 2.9452E-12 1.5536E-14 6.1243E-14 3.2247E-12 1.8195E-10
2.9452E-12 1.4241E-11 4.4932E-14 2.3527E-13 1.0603E-11 6.8882E-10
1.5536E-14 4.4932E-14 3.4845E-13 -3.7419E-13 4.6240E-14 2.5217E-12
6.1243E-14 2.3527E-13 -3.7419E-13 5.5357E-13 1.9252E-13 1.2072E-11
3.2247E-12 1.0603E-11 4.6240E-14 1.9252E-13 9.8225E-12 5.7019E-10
1.8195E-10 6.8882E-10 2.5217E-12 1.2072E-11 5.7019E-10 3.5493E-08
# lat0 lon0 xBary yBary zBary JD0
3.286398 178.925446 0.027970 0.057058 -0.992322 2458196.100871
# Heliocentric elements and errors
Epoch: 2458190.5000 = 2018/03/13
Mean Anomaly: 329.38792 +/- 4.711
Argument of Peri: 105.86743 +/- 5.578
Long of Asc Node: 107.95702 +/- 0.029
Inclination: 3.39402 +/- 0.001
Eccentricity: 0.06843303 +/- 0.0047
Semi-Major Axis: 44.40519551 +/- 0.0380
Time of Perihelion: 2467381.0061 +/- 1414.5
Perihelion: 41.36641348 +/- 0.2125
Aphelion: 47.44397754 +/- 0.2134
Period (y) 295.9095 +/- 0.38
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.77504680 +/- 0.0052
Ecliptic Y 0.80436938 +/- 0.0001
Ecliptic Z 2.34212751 +/- 0.0003
Ecliptic XDOT 0.00005148 +/- 0.0000
Ecliptic YDOT -0.00273374 +/- 0.0000
Ecliptic ZDOT 0.00004708 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.84838236 +/- 0.0052
Geocenter to KBO 40.85480090 +/- 0.0052
# Hcoef: 8.31
The following table shows the complete astrometric record for 19CQ30. 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 (19CQ30) followed by the observatory code and reference code for the source of the astrometry.
2018 03 18.600070 12 01 17.50 +03 26 32.4 19CQ30 T09 C~870W 2018 04 24.36552 11 58 43.26 +03 42 31.5 24.1z 19CQ30 T09 C~870W 2018 04 24.38261 11 58 43.20 +03 42 31.9 23.7z 19CQ30 T09 C~870W 2018 04 24.40950 11 58 43.10 +03 42 32.2 23.9z 19CQ30 T09 C~870W 2018 04 24.45326 11 58 42.94 +03 42 33.1 23.9z 19CQ30 T09 C~870W 2019 02 05.53446 12 09 08.46 +02 35 29.0 24.3i 19CQ30 T09 C~83G8 2019 02 05.55162 12 09 08.39 +02 35 29.6 24.4i 19CQ30 T09 C~83G8 2019 02 05.62497 12 09 08.18 +02 35 31.4 24.2i 19CQ30 T09 C~83G8 2019 02 05.66520 12 09 08.07 +02 35 32.1 24.2i 19CQ30 T09 C~83G8 2019 03 03.52297 12 07 35.48 +02 46 55.9 24.3z 19CQ30 T09 C~83G8 2019 03 03.52564 12 07 35.49 +02 46 55.8 24.3z 19CQ30 T09 C~83G8 2019 03 03.56606 12 07 35.30 +02 46 57.1 23.7z 19CQ30 T09 C~83G8 2019 03 03.61973 12 07 35.06 +02 46 58.6 24.0z 19CQ30 T09 C~83G8 2019 04 04.44671 12 05 14.73 +03 02 29.1 26.0g 19CQ30 T09 C~83G8 2019 04 04.45724 12 05 14.67 +03 02 29.2 25.7g 19CQ30 T09 C~83G8 2019 04 04.49094 12 05 14.54 +03 02 30.1 25.9g 19CQ30 T09 C~83G8
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 -0.03 0.00 -0.00
2 0.1007 -2500.17 -0.03 -39.45 0.07
3 0.1007 -2501.15 -0.02 -39.45 0.14
4 0.1008 -2502.65 0.05 -39.77 -0.10
5 0.1009 -2505.20 0.02 -39.89 -0.10
6 0.8869 7694.53 0.27 8.23 -0.05
7 0.8869 7693.33 -0.09 8.36 0.02
8 0.8871 7689.72 -0.10 8.75 0.18
9 0.8872 7687.93 0.07 8.73 0.03
10 0.9580 6141.16 -0.14 80.65 -0.03
11 0.9580 6141.34 0.22 80.62 -0.07
12 0.9582 6138.21 -0.07 80.67 -0.06
13 0.9583 6134.31 -0.22 80.61 -0.20
14 1.0454 3834.03 0.00 93.63 0.19
15 1.0455 3833.16 -0.10 93.36 -0.06
16 1.0456 3831.02 0.17 93.41 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.
19CQ30 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 44.052 44.099 44.021 ecceobj 0.059 0.071 0.056 incobj 3.392 3.392 3.393 qmin 40.862 40.464 40.939 qmax 47.812 48.397 47.669 amean 44.235 44.289 44.202 amin 43.882 43.942 43.855 amax 44.591 44.667 44.569 emean 0.057 0.068 0.055 emin 0.042 0.052 0.039 emax 0.072 0.084 0.070 imean 1.775 1.756 1.784 imin 1.081 1.036 1.091 imax 2.421 2.407 2.430 excite_mean 0.066 0.075 0.063 fracstop 1.000 1.000 1.000 cjmean 3.099 3.098 3.099 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 198.5 194.6 198.3 kozaiamp 180.0 180.0 180.0