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: 19CW30
# Created Sun Nov 24 02:10:55 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 26 observations of 26
# Arc: 15.21y
# First observation: 2003/12/23
# Last observation: 2019/03/08
# Chi-squared of fit: 11.50 DOF: 46 RMS: 0.12
# Min/Max residuals: -0.29 0.32
# Exact a, adot, b, bdot, g, gdot:
1.586993E-05 2.420485E-02 6.774937E-07 4.966892E-04 2.420464E-02 -5.857267E-06
# Covariance matrix:
4.8821E-13 -8.1799E-14 9.2769E-16 -1.0471E-15 -4.9067E-14 -1.2958E-13
-8.1799E-14 3.0107E-13 -1.6038E-15 5.3004E-15 6.8295E-13 7.2612E-13
9.2769E-16 -1.6038E-15 4.4736E-13 -3.0960E-14 -2.3006E-15 -4.0193E-15
-1.0471E-15 5.3004E-15 -3.0960E-14 2.5031E-15 1.1819E-14 1.2913E-14
-4.9067E-14 6.8295E-13 -2.3006E-15 1.1819E-14 1.7022E-12 1.6481E-12
-1.2958E-13 7.2612E-13 -4.0193E-15 1.2913E-14 1.6481E-12 1.7665E-12
# lat0 lon0 xBary yBary zBary JD0
1.186765 156.224333 0.890431 0.008581 -0.410990 2452997.016700
# Heliocentric elements and errors
Epoch: 2452996.5000 = 2003/12/23
Mean Anomaly: 342.87822 +/- 0.019
Argument of Peri: 63.96218 +/- 0.021
Long of Asc Node: 110.62483 +/- 0.004
Inclination: 1.67944 +/- 0.000
Eccentricity: 0.06696480 +/- 0.0001
Semi-Major Axis: 44.57257167 +/- 0.0084
Time of Perihelion: 2458165.9739 +/- 29.7
Perihelion: 41.58777836 +/- 0.0099
Aphelion: 47.55736498 +/- 0.0108
Period (y) 297.5841 +/- 0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -37.82083289 +/- 0.0020
Ecliptic Y 17.63548617 +/- 0.0009
Ecliptic Z 0.85570204 +/- 0.0001
Ecliptic XDOT -0.00110637 +/- 0.0000
Ecliptic YDOT -0.00251257 +/- 0.0000
Ecliptic ZDOT 0.00005631 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 41.73918003 +/- 0.0019
Geocenter to KBO 41.31441753 +/- 0.0022
# Hcoef: 8.20
The following table shows the complete astrometric record for 19CW30. 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 (19CW30) followed by the observatory code and reference code for the source of the astrometry.
2003 12 23.515957 10 33 44.80 +10 19 51.6 19CW30 T14 C~870W 2003 12 23.568292 10 33 44.72 +10 19 52.2 19CW30 T14 C~870W 2003 12 23.619541 10 33 44.65 +10 19 52.8 19CW30 T14 C~870W 2014 06 27.316170 11 18 40.18 +05 59 53.5 19CW30 T09 C~870W 2014 06 27.317386 11 18 40.18 +05 59 53.5 19CW30 T09 C~870W 2014 06 27.318581 11 18 40.18 +05 59 53.5 19CW30 T09 C~870W 2017 03 23.210334 11 36 56.72 +04 09 26.6 19CW30 W84 C~870W 2017 03 24.211438 11 36 52.26 +04 09 55.2 19CW30 W84 C~870W 2018 03 18.459695 11 42 34.75 +03 34 16.1 19CW30 T09 C~870W 2018 03 18.505699 11 42 34.54 +03 34 17.4 19CW30 T09 C~870W 2018 04 24.355370 11 40 04.08 +03 50 05.0 19CW30 T09 C~870W 2018 04 24.485346 11 40 03.64 +03 50 07.7 19CW30 T09 C~870W 2019 02 02.656217 11 50 46.24 +02 41 30.3 19CW30 T09 C~870W 2019 02 04.58665 11 50 40.35 +02 42 12.3 24.9g 19CW30 T09 C~85K8 2019 02 04.63104 11 50 40.22 +02 42 13.0 25.2g 19CW30 T09 C~85K8 2019 02 04.66041 11 50 40.12 +02 42 13.9 25.1g 19CW30 T09 C~85K8 2019 02 04.66250 11 50 40.11 +02 42 13.9 25.8g 19CW30 T09 C~85K8 2019 02 28.531376 11 49 10.36 +02 52 31.8 19CW30 T09 C~870W 2019 03 02.43089 11 49 02.21 +02 53 26.7 23.8y 19CW30 T09 C~85K8 2019 03 02.43427 11 49 02.19 +02 53 26.7 24.4y 19CW30 T09 C~85K8 2019 03 02.53236 11 49 01.77 +02 53 29.3 23.8y 19CW30 T09 C~85K8 2019 03 02.55921 11 49 01.65 +02 53 30.0 23.1y 19CW30 T09 C~85K8 2019 03 02.61357 11 49 01.42 +02 53 31.4 24.0y 19CW30 T09 C~85K8 2019 03 08.34835 11 48 36.27 +02 56 19.6 24.5r 19CW30 T09 C~85K8 2019 03 08.36022 11 48 36.20 +02 56 19.7 23.9r 19CW30 T09 C~85K8 2019 03 08.43394 11 48 35.88 +02 56 21.9 24.1r 19CW30 T09 C~85K8
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 -0.06
2 0.0001 0.00 -0.06 0.00 -0.02
3 0.0003 0.00 0.06 0.00 0.04
4 10.5101 0.00 0.03 0.00 0.03
5 10.5101 0.00 -0.01 0.00 0.05
6 10.5101 0.00 -0.05 0.00 0.07
7 13.2476 0.00 -0.10 0.00 0.10
8 13.2504 0.00 0.03 0.00 0.08
9 14.2339 0.00 0.09 0.00 -0.06
10 14.2341 0.00 0.12 0.00 -0.11
11 14.3349 0.00 0.06 0.00 -0.10
12 14.3353 0.00 0.02 0.00 0.02
13 15.1133 0.00 0.11 0.00 -0.05
14 15.1186 0.00 -0.09 0.00 -0.01
15 15.1187 0.00 0.09 0.00 -0.29
16 15.1188 0.00 -0.01 0.00 -0.04
17 15.1188 0.00 -0.06 0.00 -0.09
18 15.1842 0.00 -0.10 0.00 0.11
19 15.1894 0.00 -0.16 0.00 0.32
20 15.1894 0.00 -0.24 0.00 0.23
21 15.1896 0.00 -0.06 0.00 -0.01
22 15.1897 0.00 -0.09 0.00 -0.09
23 15.1899 0.00 0.04 0.00 -0.26
24 15.2056 0.00 0.20 0.00 0.22
25 15.2056 0.00 -0.05 0.00 -0.03
26 15.2058 0.00 0.16 0.00 -0.00
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.