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: 19CM31
# Created Sun Dec 22 02:11:04 2024
# Orbit generated from Bernstein formalism
# Fitting 14 observations of 14
# Arc: 1.05y
# First observation: 2018/03/18
# Last observation: 2019/04/05
Preliminary a, adot, b, bdot, g, gdot:
-0.000009 0.021245 0.000002 -0.001256 0.022191 0.000000
# Chi-squared of fit: 7.56 DOF: 22 RMS: 0.13
# Min/Max residuals: -0.32 0.25
# Exact a, adot, b, bdot, g, gdot:
1.519750E-05 2.113142E-02 -3.393784E-08 -1.249857E-03 2.225827E-02 -6.444748E-03
# Covariance matrix:
7.2812E-13 1.3630E-12 1.9003E-14 -1.4325E-13 1.6363E-12 1.0013E-10
1.3630E-12 1.1223E-11 8.9578E-14 -7.9797E-13 7.0050E-12 5.5911E-10
1.9003E-14 8.9578E-14 2.8329E-13 -3.1565E-13 7.3366E-14 5.0302E-12
-1.4325E-13 -7.9797E-13 -3.1565E-13 5.9682E-13 -5.7717E-13 -4.3017E-11
1.6363E-12 7.0050E-12 7.3366E-14 -5.7717E-13 6.1779E-12 4.0370E-10
1.0013E-10 5.5911E-10 5.0302E-12 -4.3017E-11 4.0370E-10 3.0124E-08
# lat0 lon0 xBary yBary zBary JD0
3.508929 177.635168 0.007593 0.060943 -0.992454 2458195.985663
# Heliocentric elements and errors
Epoch: 2458190.5000 = 2018/03/13
Mean Anomaly: 314.68259 +/- 0.486
Argument of Peri: 214.90558 +/- 0.262
Long of Asc Node: 42.88368 +/- 0.017
Inclination: 4.82828 +/- 0.001
Eccentricity: 0.32814247 +/- 0.0086
Semi-Major Axis: 54.31989919 +/- 0.3486
Time of Perihelion: 2476598.1977 +/- 87.2
Perihelion: 36.49523352 +/- 0.5210
Aphelion: 72.14456487 +/- 0.6565
Period (y) 400.3563 +/- 3.85
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -45.79922242 +/- 0.0050
Ecliptic Y 1.89176427 +/- 0.0002
Ecliptic Z 2.74974345 +/- 0.0003
Ecliptic XDOT 0.00068028 +/- 0.0000
Ecliptic YDOT -0.00263377 +/- 0.0000
Ecliptic ZDOT -0.00020212 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 45.92067764 +/- 0.0050
Geocenter to KBO 44.92711333 +/- 0.0050
# Hcoef: 7.98
The following table shows the complete astrometric record for 19CM31. 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 (19CM31) followed by the observatory code and reference code for the source of the astrometry.
2018 03 18.484862 11 56 54.68 +04 09 34.8 19CM31 T09 C~8Aix 2018 03 18.584036 11 56 54.27 +04 09 37.5 19CM31 T09 C~8Aix 2018 04 24.379218 11 54 32.39 +04 23 34.1 19CM31 T09 C~8Aix 2018 04 24.42024 11 54 32.23 +04 23 35.0 23.9z 19CM31 T09 C~8CPR 2018 04 24.463945 11 54 32.11 +04 23 35.7 19CM31 T09 C~8Aix 2018 04 24.50409 11 54 31.96 +04 23 36.5 24.3z 19CM31 T09 C~8CPR 2019 02 05.54825 12 03 46.99 +03 19 19.0 24.3i 19CM31 T09 C~8Aix 2019 02 05.62229 12 03 46.79 +03 19 20.2 24.3i 19CM31 T09 C~8Aix 2019 02 05.63575 12 03 46.75 +03 19 20.9 24.5i 19CM31 T09 C~8Aix 2019 03 03.57949 12 02 18.54 +03 29 42.2 24.6z 19CM31 T09 C~8Aix 2019 03 03.63045 12 02 18.34 +03 29 43.5 24.7z 19CM31 T09 C~8Aix 2019 03 03.64654 12 02 18.25 +03 29 43.7 24.4z 19CM31 T09 C~8Aix 2019 04 04.488831 12 00 07.68 +03 43 31.9 19CM31 T09 C~8Aix 2019 04 05.551715 12 00 03.41 +03 43 57.3 19CM31 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 -0.04 0.00 -0.18
2 0.0003 -6.70 0.03 0.03 -0.04
3 0.1010 -2286.69 0.20 -77.49 -0.02
4 0.1011 -2289.25 -0.21 -77.62 0.02
5 0.1012 -2291.17 0.15 -77.69 0.11
6 0.1014 -2293.55 -0.14 -77.85 0.11
7 0.8872 6864.87 -0.06 -299.92 0.13
8 0.8874 6861.64 0.18 -300.02 -0.12
9 0.8875 6860.81 -0.02 -299.62 0.25
10 0.9585 5400.44 0.01 -258.63 0.06
11 0.9586 5397.18 0.06 -258.64 0.04
12 0.9587 5395.86 -0.21 -259.00 -0.32
13 1.0459 3272.14 0.03 -280.98 0.01
14 1.0488 3203.38 0.02 -283.21 -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.
19CM31 quality flag:1 Type: 12:5EEEEEE SCATNEAR 7:3EEEE axisobj 53.624 54.523 52.818 ecceobj 0.321 0.344 0.299 incobj 4.843 4.844 4.842 qmin 35.901 35.219 36.514 qmax 73.147 75.672 70.580 amean 53.974 54.746 52.970 amin 53.321 54.011 52.296 amax 54.792 55.773 53.817 emean 0.324 0.341 0.299 emin 0.314 0.326 0.287 emax 0.335 0.357 0.311 imean 4.216 4.130 4.195 imin 3.999 3.616 3.951 imax 4.459 4.767 4.458 excite_mean 0.332 0.349 0.308 fracstop 1.000 1.000 1.000 cjmean 3.084 3.078 3.093 libcent 0 181.2 -180.0 180.9 libamp 0 105.7 -180.0 134.5 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 192.1 184.7 183.1 kozaiamp 180.0 180.0 179.9