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: 19CP31
# Created Mon Apr 28 01:11:13 2025
# Orbit generated from Bernstein formalism
# Fitting 13 observations of 13
# Arc: 1.94y
# First observation: 2019/02/05
# Last observation: 2021/01/12
Preliminary a, adot, b, bdot, g, gdot:
0.000006 0.026978 -0.000000 -0.000848 0.025881 0.000000
# Chi-squared of fit: 5.02 DOF: 20 RMS: 0.11
# Min/Max residuals: -0.18 0.24
# Exact a, adot, b, bdot, g, gdot:
1.712531E-05 2.726462E-02 -2.871151E-07 -8.606823E-04 2.577333E-02 6.757773E-04
# Covariance matrix:
5.1920E-13 4.6374E-11 1.5578E-14 -1.7197E-12 1.1277E-11 8.2673E-10
4.6374E-11 1.2989E-08 5.9466E-12 -4.8149E-10 3.0215E-09 2.3044E-07
1.5578E-14 5.9466E-12 1.6124E-13 -3.1268E-13 1.3695E-12 1.0543E-10
-1.7197E-12 -4.8149E-10 -3.1268E-13 1.8034E-11 -1.1200E-10 -8.5420E-09
1.1277E-11 3.0215E-09 1.3695E-12 -1.1200E-10 7.0397E-10 5.3609E-08
8.2673E-10 2.3044E-07 1.0543E-10 -8.5420E-09 5.3609E-08 4.0882E-06
# lat0 lon0 xBary yBary zBary JD0
3.701581 -177.954774 0.715114 0.044444 -0.685983 2458520.055801
# Heliocentric elements and errors
Epoch: 2458520.5000 = 2019/02/06
Mean Anomaly: 1.68700 +/- 29.908
Argument of Peri: 113.28283 +/- 38.658
Long of Asc Node: 65.50623 +/- 0.075
Inclination: 4.02828 +/- 0.003
Eccentricity: 0.12270397 +/- 0.0120
Semi-Major Axis: 45.01133079 +/- 0.4467
Time of Perihelion: 2458003.6163 +/- 9163.5
Perihelion: 39.48826196 +/- 0.6690
Aphelion: 50.53439962 +/- 0.7386
Period (y) 301.9889 +/- 4.50
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -39.40563189 +/- 0.0398
Ecliptic Y -0.69984419 +/- 0.0014
Ecliptic Z 2.50488328 +/- 0.0026
Ecliptic XDOT 0.00003392 +/- 0.0002
Ecliptic YDOT -0.00289885 +/- 0.0000
Ecliptic ZDOT -0.00008681 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.49136674 +/- 0.0397
Geocenter to KBO 38.79979776 +/- 0.0399
# Hcoef: 8.87
The following table shows the complete astrometric record for 19CP31. 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 (19CP31) followed by the observatory code and reference code for the source of the astrometry.
2019 02 05.55500 12 13 23.72 +02 34 58.7 25.3i 19CP31 T09 C~8Aix 2019 02 05.58442 12 13 23.64 +02 34 59.3 25.1i 19CP31 T09 C~8Aix 2019 02 05.62764 12 13 23.51 +02 35 00.2 24.8i 19CP31 T09 C~8Aix 2019 03 03.52564 12 11 47.80 +02 46 41.1 24.3z 19CP31 T09 C~8Aix 2019 03 03.52832 12 11 47.78 +02 46 41.1 23.9z 19CP31 T09 C~8Aix 2019 03 03.58217 12 11 47.55 +02 46 42.7 24.8z 19CP31 T09 C~8Aix 2019 03 03.62241 12 11 47.37 +02 46 43.6 24.2z 19CP31 T09 C~8Aix 2019 04 04.446698 12 09 19.98 +03 02 39.4 19CP31 T09 C~8Aix 2019 04 05.522392 12 09 15.03 +03 03 09.7 19CP31 T09 C~8Aix 2019 04 05.574759 12 09 14.78 +03 03 11.2 19CP31 T09 C~8Aix 2021 01 11.621188 12 25 20.25 +01 08 44.5 19CP31 T14 C~8Aix 2021 01 11.639535 12 25 20.26 +01 08 44.6 19CP31 T14 C~8Aix 2021 01 12.666235 12 25 19.69 +01 08 53.7 19CP31 T14 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 -0.08 0.00 -0.05
2 0.0001 -1.34 0.05 0.07 -0.07
3 0.0002 -3.48 0.06 0.12 -0.17
4 0.0711 -1598.06 -0.04 72.74 0.20
5 0.0711 -1598.33 -0.12 72.62 0.08
6 0.0713 -1602.13 0.01 72.72 0.11
7 0.0714 -1604.96 0.10 72.47 -0.18
8 0.1585 -4011.43 0.07 72.15 -0.12
9 0.1614 -4091.54 0.03 70.52 0.11
10 0.1616 -4095.57 -0.08 70.41 0.11
11 1.9331 11927.56 -0.06 -461.48 -0.02
12 1.9332 11927.66 0.24 -461.32 0.05
13 1.9360 11916.15 -0.18 -456.39 -0.05
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.
19CP31 quality flag:1 Type: CLASSICAL SCATNEAR CLASSICAL axisobj 44.761 50.123 43.840 ecceobj 0.117 0.286 0.142 incobj 4.031 4.022 4.036 qmin 38.707 33.999 37.175 qmax 51.474 68.964 51.302 amean 44.933 50.496 44.060 amin 44.567 49.433 43.698 amax 45.340 51.787 44.473 emean 0.120 0.300 0.133 emin 0.105 0.274 0.110 emax 0.136 0.332 0.154 imean 2.684 3.866 1.780 imin 1.924 1.953 0.372 imax 3.351 7.048 3.065 excite_mean 0.129 0.308 0.137 fracstop 1.000 1.000 1.000 cjmean 3.092 3.060 3.079 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 179.1 179.1 201.2 kozaiamp 180.0 179.9 180.0