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: 19CM30
# Created Sun Dec 22 02:11:04 2024
# Orbit generated from Bernstein formalism
# Fitting 17 observations of 17
# Arc: 0.99y
# First observation: 2018/03/10
# Last observation: 2019/03/08
Preliminary a, adot, b, bdot, g, gdot:
-0.000096 0.027512 -0.000000 -0.000358 0.026043 0.000000
# Chi-squared of fit: 5.20 DOF: 28 RMS: 0.10
# Min/Max residuals: -0.16 0.22
# Exact a, adot, b, bdot, g, gdot:
1.622201E-05 2.749844E-02 1.362742E-07 -3.600547E-04 2.641568E-02 3.360598E-03
# Covariance matrix:
9.8761E-13 3.3720E-12 8.2705E-15 -6.5710E-14 2.8431E-12 1.5770E-10
3.3720E-12 3.6814E-11 6.0672E-14 -5.8442E-13 2.0617E-11 1.4021E-09
8.2705E-15 6.0672E-14 4.0737E-13 -4.3030E-13 4.1660E-14 2.4590E-12
-6.5710E-14 -5.8442E-13 -4.3030E-13 5.8515E-13 -3.4900E-13 -2.2870E-11
2.8431E-12 2.0617E-11 4.1660E-14 -3.4900E-13 1.4279E-11 8.3748E-10
1.5770E-10 1.4021E-09 2.4590E-12 -2.2870E-11 8.3748E-10 5.4870E-08
# lat0 lon0 xBary yBary zBary JD0
2.360072 173.150501 0.066545 0.040893 -0.989954 2458188.076744
# Heliocentric elements and errors
Epoch: 2458180.5000 = 2018/03/03
Mean Anomaly: 47.35925 +/- 0.918
Argument of Peri: 46.62403 +/- 1.732
Long of Asc Node: 65.31843 +/- 0.037
Inclination: 2.41464 +/- 0.001
Eccentricity: 0.14432278 +/- 0.0080
Semi-Major Axis: 42.43994809 +/- 0.0973
Time of Perihelion: 2444895.4554 +/- 253.3
Perihelion: 36.31489680 +/- 0.3486
Aphelion: 48.56499939 +/- 0.3564
Period (y) 276.4843 +/- 0.95
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -38.53147813 +/- 0.0054
Ecliptic Y 4.68814632 +/- 0.0007
Ecliptic Z 1.55892213 +/- 0.0002
Ecliptic XDOT -0.00068065 +/- 0.0000
Ecliptic YDOT -0.00279257 +/- 0.0000
Ecliptic ZDOT -0.00002309 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 38.84692730 +/- 0.0053
Geocenter to KBO 37.85629848 +/- 0.0054
# Hcoef: 8.25
The following table shows the complete astrometric record for 19CM30. 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 (19CM30) followed by the observatory code and reference code for the source of the astrometry.
2018 03 10.575943 11 38 35.35 +04 53 11.1 19CM30 T09 C~870W 2018 03 18.586707 11 37 56.59 +04 57 19.6 19CM30 T09 C~870W 2018 04 12.102940 11 36 04.62 +05 08 48.0 19CM30 W84 C~870W 2018 04 13.100658 11 36 00.52 +05 09 12.0 19CM30 W84 C~870W 2019 02 04.57182 11 46 46.20 +03 58 05.4 25.3g 19CM30 T09 C~83G8 2019 02 04.57463 11 46 46.17 +03 58 05.4 25.3g 19CM30 T09 C~83G8 2019 02 04.59733 11 46 46.10 +03 58 06.1 24.7g 19CM30 T09 C~83G8 2019 02 04.63944 11 46 45.97 +03 58 07.1 25.1g 19CM30 T09 C~83G8 2019 03 02.44446 11 45 00.20 +04 10 15.2 23.6y 19CM30 T09 C~83G8 2019 03 02.52968 11 44 59.80 +04 10 17.9 23.2y 19CM30 T09 C~83G8 2019 03 02.54316 11 44 59.73 +04 10 18.4 22.7y 19CM30 T09 C~83G8 2019 03 02.57264 11 44 59.59 +04 10 19.4 23.2y 19CM30 T09 C~83G8 2019 03 08.35394 11 44 32.44 +04 13 18.7 24.2r 19CM30 T09 C~83G8 2019 03 08.36859 11 44 32.36 +04 13 19.1 24.2r 19CM30 T09 C~83G8 2019 03 08.37905 11 44 32.30 +04 13 19.6 24.1r 19CM30 T09 C~83G8 2019 03 08.41061 11 44 32.14 +04 13 20.4 24.0r 19CM30 T09 C~83G8 2019 03 08.41270 11 44 32.13 +04 13 20.6 24.4r 19CM30 T09 C~83G8
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 0.05 0.00 -0.07
2 0.0219 -630.31 -0.07 -1.38 0.03
3 0.0891 -2439.29 -0.06 -31.45 0.10
4 0.0918 -2505.05 0.08 -33.63 -0.06
5 0.9062 8053.97 0.10 -113.80 0.05
6 0.9062 8053.56 -0.15 -113.98 -0.14
7 0.9063 8052.32 -0.09 -113.76 0.05
8 0.9064 8050.13 0.14 -113.62 0.12
9 0.9771 6306.39 0.07 -76.74 -0.14
10 0.9773 6299.82 0.08 -76.64 -0.06
11 0.9773 6298.66 -0.05 -76.60 -0.02
12 0.9774 6296.34 -0.10 -76.52 0.06
13 0.9932 5851.99 0.22 -73.84 0.10
14 0.9933 5850.73 0.12 -73.95 -0.01
15 0.9933 5849.71 -0.08 -73.85 0.10
16 0.9934 5847.19 -0.11 -74.07 -0.12
17 0.9934 5846.97 -0.16 -73.95 0.01
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.
19CM30 quality flag:2 Type: 5:3EE CLASSICAL CLASSICAL axisobj 42.254 42.639 41.917 ecceobj 0.145 0.167 0.124 incobj 2.415 2.414 2.415 qmin 35.693 34.930 36.270 qmax 49.442 50.867 48.093 amean 42.329 42.690 42.015 amin 41.884 42.276 41.653 amax 42.821 43.120 42.383 emean 0.140 0.145 0.093 emin 0.123 0.113 0.060 emax 0.156 0.180 0.135 imean 1.231 2.944 2.322 imin 0.320 1.633 0.755 imax 2.101 4.183 3.487 excite_mean 0.142 0.155 0.104 fracstop 1.000 1.000 1.000 cjmean 3.058 3.057 3.065 libcent 0 181.1 -180.0 -180.0 libamp 0 93.5 -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 181.3 178.7 183.3 kozaiamp 180.0 180.0 180.0