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: 19CD30
# Created Sun Dec 22 02:11:03 2024
# Orbit generated from Bernstein formalism
# Fitting 20 observations of 20
# Arc: 0.97y
# First observation: 2018/03/18
# Last observation: 2019/03/08
Preliminary a, adot, b, bdot, g, gdot:
-0.000055 0.022095 -0.000003 0.006479 0.023868 0.000000
# Chi-squared of fit: 10.45 DOF: 34 RMS: 0.13
# Min/Max residuals: -0.26 0.40
# Exact a, adot, b, bdot, g, gdot:
1.405456E-05 2.201713E-02 4.162650E-06 6.485800E-03 2.410329E-02 -1.547854E-04
# Covariance matrix:
4.8869E-13 1.1475E-12 -2.2320E-14 4.6757E-13 1.1753E-12 7.2648E-11
1.1475E-12 1.8738E-11 -2.6316E-13 5.1191E-12 8.4531E-12 7.9456E-10
-2.2320E-14 -2.6316E-13 2.1492E-13 -3.0715E-13 -1.2910E-13 -1.1585E-11
4.6757E-13 5.1191E-12 -3.0715E-13 1.8614E-12 2.6149E-12 2.2784E-10
1.1753E-12 8.4531E-12 -1.2910E-13 2.6149E-12 5.5694E-12 4.0610E-10
7.2648E-11 7.9456E-10 -1.1585E-11 2.2784E-10 4.0610E-10 3.5369E-08
# lat0 lon0 xBary yBary zBary JD0
1.809410 175.453636 -0.029881 0.031471 -0.993403 2458195.963881
# Heliocentric elements and errors
Epoch: 2458190.5000 = 2018/03/13
Mean Anomaly: 202.69412 +/- 18.497
Argument of Peri: 164.51494 +/- 18.498
Long of Asc Node: 169.51721 +/- 0.001
Inclination: 16.48096 +/- 0.002
Eccentricity: 0.02292562 +/- 0.0031
Semi-Major Axis: 41.59947329 +/- 0.0102
Time of Perihelion: 2501013.0616 +/- 5035.4
Perihelion: 40.64577974 +/- 0.1279
Aphelion: 42.55316684 +/- 0.1279
Period (y) 268.3119 +/- 0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -42.33146560 +/- 0.0040
Ecliptic Y 3.32886875 +/- 0.0003
Ecliptic Z 1.31017567 +/- 0.0001
Ecliptic XDOT -0.00015116 +/- 0.0000
Ecliptic YDOT -0.00250074 +/- 0.0000
Ecliptic ZDOT 0.00073564 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.48235996 +/- 0.0040
Geocenter to KBO 41.48811115 +/- 0.0041
# Hcoef: 8.30
The following table shows the complete astrometric record for 19CD30. 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 (19CD30) followed by the observatory code and reference code for the source of the astrometry.
2018 03 18.46308 11 46 11.15 +03 28 03.3 24.1i 19CD30 T09 C~83G7 2018 03 18.50571 11 46 10.95 +03 28 04.6 23.9i 19CD30 T09 C~83G7 2018 03 18.57871 11 46 10.62 +03 28 07.1 24.0i 19CD30 T09 C~83G7 2018 04 24.37247 11 43 43.34 +03 45 51.9 23.9z 19CD30 T09 C~83G7 2018 04 24.40148 11 43 43.24 +03 45 52.2 23.4z 19CD30 T09 C~83G7 2018 04 24.44523 11 43 43.08 +03 45 53.0 23.9z 19CD30 T09 C~83G7 2018 04 24.44791 11 43 43.08 +03 45 53.4 24.0z 19CD30 T09 C~83G7 2018 04 24.48803 11 43 42.94 +03 45 54.0 24.1z 19CD30 T09 C~83G7 2019 02 04.56598 11 54 10.23 +02 56 50.5 25.9g 19CD30 T09 C~83G7 2019 02 04.58875 11 54 10.16 +02 56 51.2 25.3g 19CD30 T09 C~83G7 2019 02 04.63313 11 54 10.03 +02 56 52.2 25.3g 19CD30 T09 C~83G7 2019 02 04.66250 11 54 09.95 +02 56 52.8 25.6g 19CD30 T09 C~83G7 2019 03 07.56739 11 52 13.96 +03 12 17.4 24.8y 19CD30 T09 C~83G7 2019 03 07.60751 11 52 13.79 +03 12 18.7 25.2y 19CD30 T09 C~83G7 2019 03 07.62089 11 52 13.72 +03 12 19.1 25.4y 19CD30 T09 C~83G7 2019 03 08.35114 11 52 10.61 +03 12 43.1 24.3r 19CD30 T09 C~83G7 2019 03 08.36022 11 52 10.58 +03 12 43.4 24.3r 19CD30 T09 C~83G7 2019 03 08.37278 11 52 10.52 +03 12 43.9 24.0r 19CD30 T09 C~83G7 2019 03 08.40431 11 52 10.39 +03 12 44.9 24.4r 19CD30 T09 C~83G7 2019 03 08.43604 11 52 10.24 +03 12 45.9 24.3r 19CD30 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 0.08 0.00 0.02
2 0.0001 -3.26 -0.01 0.00 -0.11
3 0.0003 -8.79 -0.10 0.33 -0.01
4 0.1011 -2455.23 -0.01 102.47 0.40
5 0.1011 -2456.73 0.09 102.16 0.04
6 0.1013 -2459.24 -0.02 101.94 -0.24
7 0.1013 -2459.40 -0.03 102.31 0.12
8 0.1014 -2461.56 0.00 102.03 -0.23
9 0.8846 7330.48 -0.05 1139.40 0.06
10 0.8847 7329.24 -0.11 1139.62 0.16
11 0.8848 7327.05 0.01 1139.76 0.07
12 0.8849 7325.71 0.20 1139.83 -0.01
13 0.9695 5361.88 -0.10 1294.66 -0.18
14 0.9696 5359.02 -0.03 1294.84 -0.16
15 0.9696 5357.90 -0.18 1294.79 -0.26
16 0.9716 5305.58 -0.02 1298.23 -0.00
17 0.9717 5305.05 0.12 1298.32 0.06
18 0.9717 5304.02 0.01 1298.42 0.11
19 0.9718 5301.84 0.14 1298.56 0.13
20 0.9719 5299.38 0.01 1298.58 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.
19CD30 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 41.356 41.419 41.315 ecceobj 0.028 0.029 0.035 incobj 16.544 16.544 16.545 qmin 39.668 39.662 39.431 qmax 43.440 43.630 43.633 amean 41.485 41.546 41.447 amin 41.183 41.235 41.137 amax 41.800 41.870 41.759 emean 0.027 0.029 0.032 emin 0.014 0.017 0.020 emax 0.040 0.042 0.045 imean 16.298 16.291 16.310 imin 15.679 15.681 15.678 imax 16.979 16.964 17.003 excite_mean 0.282 0.282 0.283 fracstop 1.000 1.000 1.000 cjmean 2.978 2.979 2.978 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 187.6 185.9 186.3 kozaiamp 180.0 180.0 179.9