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: 19CF30
# Created Sun Apr 27 01:11:11 2025
# Orbit generated from Bernstein formalism
# Fitting 15 observations of 15
# Arc: 58.99d
# First observation: 2019/02/05
# Last observation: 2019/04/05
Preliminary a, adot, b, bdot, g, gdot:
0.000000 0.026034 -0.000001 -0.001739 0.025102 0.000000
# Chi-squared of fit: 9.48 DOF: 24 RMS: 0.14
# Min/Max residuals: -0.31 0.28
# Exact a, adot, b, bdot, g, gdot:
1.567981E-05 2.422166E-02 -9.564483E-07 -1.687576E-03 2.462020E-02 -2.893356E-03
# Covariance matrix:
5.4876E-13 1.0153E-10 -8.8036E-14 -2.6623E-12 2.2842E-11 1.4604E-09
1.0153E-10 1.7496E-07 -1.3966E-10 -4.3789E-09 3.6051E-08 1.7803E-06
-8.8036E-14 -1.3966E-10 4.8767E-13 9.5744E-13 -2.8844E-11 -1.4392E-09
-2.6623E-12 -4.3789E-09 9.5744E-13 1.3276E-10 -9.0314E-10 -4.4770E-08
2.2842E-11 3.6051E-08 -2.8844E-11 -9.0314E-10 7.4471E-09 3.7193E-07
1.4604E-09 1.7803E-06 -1.4392E-09 -4.4770E-08 3.7193E-07 1.9570E-05
# lat0 lon0 xBary yBary zBary JD0
4.583678 -176.610845 0.730656 0.053674 -0.668723 2458520.087891
# Heliocentric elements and errors
Epoch: 2458520.5000 = 2019/02/06
Mean Anomaly: 291.75377 +/- 3.643
Argument of Peri: 215.12486 +/- 20.000
Long of Asc Node: 51.35955 +/- 0.510
Inclination: 5.96680 +/- 0.047
Eccentricity: 0.14237295 +/- 0.1794
Semi-Major Axis: 42.74649241 +/- 1.1549
Time of Perihelion: 2477872.4766 +/- 672.2
Perihelion: 36.66054802 +/- 7.7337
Aphelion: 48.83243680 +/- 7.7826
Period (y) 279.4853 +/- 11.33
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -41.12815740 +/- 0.1417
Ecliptic Y -1.71190803 +/- 0.0084
Ecliptic Z 3.24586050 +/- 0.0114
Ecliptic XDOT 0.00047247 +/- 0.0005
Ecliptic YDOT -0.00267240 +/- 0.0001
Ecliptic ZDOT -0.00021298 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.29154357 +/- 0.1411
Geocenter to KBO 40.61705320 +/- 0.1424
# Hcoef: 8.63
The following table shows the complete astrometric record for 19CF30. 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 (19CF30) followed by the observatory code and reference code for the source of the astrometry.
2019 02 05.58709 12 19 43.51 +02 51 32.8 24.3i 19CF30 T09 C~83G7 2019 02 05.60340 12 19 43.47 +02 51 33.2 24.5i 19CF30 T09 C~83G7 2019 02 05.63031 12 19 43.39 +02 51 33.7 24.2i 19CF30 T09 C~83G7 2019 03 03.58484 12 18 12.14 +03 02 52.0 24.0z 19CF30 T09 C~83G7 2019 03 03.62510 12 18 11.94 +03 02 53.6 24.1z 19CF30 T09 C~83G7 2019 03 03.64387 12 18 11.88 +03 02 54.0 24.3z 19CF30 T09 C~83G7 2019 04 04.45230 12 15 49.11 +03 18 10.9 25.5g 19CF30 T09 C~83G7 2019 04 04.46143 12 15 49.06 +03 18 11.1 25.6g 19CF30 T09 C~83G7 2019 04 04.47203 12 15 48.99 +03 18 11.4 25.4g 19CF30 T09 C~83G7 2019 04 04.49512 12 15 48.89 +03 18 11.9 25.2g 19CF30 T09 C~83G7 2019 04 04.51398 12 15 48.82 +03 18 12.4 25.4g 19CF30 T09 C~83G7 2019 04 05.52450 12 15 44.24 +03 18 39.7 24.8r 19CF30 T09 C~83G7 2019 04 05.53497 12 15 44.20 +03 18 39.9 24.5r 19CF30 T09 C~83G7 2019 04 05.55801 12 15 44.08 +03 18 40.6 25.1r 19CF30 T09 C~83G7 2019 04 05.57686 12 15 44.01 +03 18 40.9 25.1r 19CF30 T09 C~83G7
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 -0.03
2 0.0000 -0.71 0.03 0.13 0.04
3 0.0001 -2.01 0.00 0.11 -0.08
4 0.0712 -1525.95 0.26 79.30 -0.11
5 0.0713 -1529.34 -0.31 79.58 0.12
6 0.0713 -1530.32 0.01 79.59 0.11
7 0.1584 -3857.29 0.28 72.25 0.13
8 0.1585 -3858.05 0.18 72.13 0.04
9 0.1585 -3859.13 -0.11 71.99 -0.07
10 0.1585 -3860.71 0.02 71.86 -0.14
11 0.1586 -3861.87 0.25 71.90 -0.05
12 0.1614 -3935.68 -0.20 69.75 0.06
13 0.1614 -3936.31 -0.06 69.70 0.03
14 0.1615 -3938.24 -0.30 69.63 0.02
15 0.1615 -3939.32 -0.01 69.48 -0.07
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.
19CF30 quality flag:1 Type: SCATNEAR CENTAURR SCATNEAR axisobj 42.447 57.066 41.522 ecceobj 0.137 0.597 0.130 incobj 5.979 6.143 6.004 qmin 34.228 22.363 30.480 qmax 51.562 93.119 58.792 amean 42.614 55.101 41.610 amin 42.166 53.163 39.325 amax 43.060 58.186 45.304 emean 0.151 0.584 0.198 emin 0.118 0.569 0.124 emax 0.199 0.600 0.308 imean 6.851 5.526 8.979 imin 4.508 5.278 5.089 imax 9.142 5.676 12.579 excite_mean 0.195 0.592 0.253 fracstop 1.000 0.019 1.000 cjmean 3.038 2.730 2.997 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 182.8 253.3 182.6 kozaiamp 180.0 17.0 180.0