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: 19GT184
# Created Mon Apr 28 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting 19 observations of 19
# Arc: 0.98y
# First observation: 2018/04/13
# Last observation: 2019/04/05
Preliminary a, adot, b, bdot, g, gdot:
-0.000011 0.019529 0.000001 -0.000772 0.021690 0.000000
# Chi-squared of fit: 11.98 DOF: 32 RMS: 0.14
# Min/Max residuals: -0.36 0.29
# Exact a, adot, b, bdot, g, gdot:
1.410213E-05 1.945354E-02 3.334730E-07 -7.722202E-04 2.185591E-02 -4.261469E-04
# Covariance matrix:
1.1170E-12 8.6606E-12 2.4607E-14 -3.7849E-13 7.1440E-12 4.8988E-10
8.6606E-12 2.3487E-10 6.2315E-13 -9.4155E-12 1.7967E-10 1.2172E-08
2.4607E-14 6.2315E-13 7.2214E-13 -7.9881E-13 4.8190E-13 3.2455E-11
-3.7849E-13 -9.4155E-12 -7.9881E-13 1.3098E-12 -7.2390E-12 -4.8997E-10
7.1440E-12 1.7967E-10 4.8190E-13 -7.2390E-12 1.3863E-10 9.3545E-09
4.8988E-10 1.2172E-08 3.2455E-11 -4.8997E-10 9.3545E-09 6.3338E-07
# lat0 lon0 xBary yBary zBary JD0
3.310451 179.702059 -0.388434 0.053254 -0.918896 2458221.637617
# Heliocentric elements and errors
Epoch: 2458220.5000 = 2018/04/12
Mean Anomaly: 196.33744 +/- 35.629
Argument of Peri: 290.67271 +/- 35.615
Long of Asc Node: 54.91696 +/- 0.040
Inclination: 3.97256 +/- 0.002
Eccentricity: 0.06011944 +/- 0.0090
Semi-Major Axis: 44.11909387 +/- 0.1034
Time of Perihelion: 2506881.9599 +/- 10592.1
Perihelion: 41.46667865 +/- 0.4083
Aphelion: 46.77150909 +/- 0.4114
Period (y) 293.0543 +/- 1.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -46.60087335 +/- 0.0246
Ecliptic Y -0.15336760 +/- 0.0002
Ecliptic Z 2.64214654 +/- 0.0014
Ecliptic XDOT 0.00004158 +/- 0.0001
Ecliptic YDOT -0.00244144 +/- 0.0000
Ecliptic ZDOT -0.00009981 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 46.67596659 +/- 0.0246
Geocenter to KBO 45.75422457 +/- 0.0246
# Hcoef: 7.87
The following table shows the complete astrometric record for 19GT184. 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 (19GT184) followed by the observatory code and reference code for the source of the astrometry.
2018 04 13.136816 12 04 10.76 +03 09 19.8 19GT184 W84 C~870j 2018 04 22.367255 12 03 37.49 +03 12 31.8 19GT184 T09 C~870j 2019 02 05.53446 12 12 20.82 +02 12 43.9 24.0i 19GT184 T09 C~83GF 2019 02 05.53784 12 12 20.82 +02 12 44.1 23.8i 19GT184 T09 C~83GF 2019 02 05.58442 12 12 20.70 +02 12 44.8 23.9i 19GT184 T09 C~83GF 2019 02 05.62764 12 12 20.59 +02 12 45.6 23.9i 19GT184 T09 C~83GF 2019 02 28.557380 12 11 07.39 +02 21 32.8 19GT184 T09 C~870j 2019 02 28.610572 12 11 07.17 +02 21 34.0 19GT184 T09 C~870j 2019 04 04.44671 12 08 47.50 +02 36 41.0 24.7g 19GT184 T09 C~83GF 2019 04 04.45724 12 08 47.48 +02 36 41.0 24.9g 19GT184 T09 C~83GF 2019 04 04.45934 12 08 47.46 +02 36 41.0 25.8g 19GT184 T09 C~83GF 2019 04 04.48040 12 08 47.40 +02 36 41.5 25.3g 19GT184 T09 C~83GF 2019 04 04.49303 12 08 47.32 +02 36 42.0 25.3g 19GT184 T09 C~83GF 2019 04 04.51189 12 08 47.25 +02 36 42.3 25.8g 19GT184 T09 C~83GF 2019 04 05.52031 12 08 43.21 +02 37 06.7 24.4r 19GT184 T09 C~83GF 2019 04 05.52240 12 08 43.21 +02 37 06.7 24.2r 19GT184 T09 C~83GF 2019 04 05.54335 12 08 43.12 +02 37 07.5 24.2r 19GT184 T09 C~83GF 2019 04 05.55592 12 08 43.07 +02 37 07.8 24.3r 19GT184 T09 C~83GF 2019 04 05.57477 12 08 43.00 +02 37 08.2 24.7r 19GT184 T09 C~83GF
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 -0.01 0.00 -0.18
2 0.0253 -533.52 0.00 -22.36 0.17
3 0.8170 8092.09 -0.13 -182.57 0.04
4 0.8170 8092.01 -0.06 -182.38 0.21
5 0.8171 8090.08 0.07 -182.46 0.03
6 0.8172 8088.25 0.15 -182.39 0.01
7 0.8800 6870.24 0.10 -137.75 -0.00
8 0.8801 6866.74 -0.11 -137.97 -0.26
9 0.9755 4583.82 -0.36 -142.69 0.20
10 0.9756 4583.54 0.06 -142.81 0.10
11 0.9756 4583.27 -0.07 -142.93 -0.02
12 0.9756 4582.24 0.29 -142.83 0.12
13 0.9757 4580.94 -0.18 -142.85 0.13
14 0.9757 4579.86 -0.02 -142.99 0.02
15 0.9785 4514.58 0.03 -144.79 -0.25
16 0.9785 4514.58 0.17 -144.79 -0.25
17 0.9785 4513.03 -0.02 -144.60 -0.01
18 0.9786 4512.22 -0.01 -144.62 -0.01
19 0.9786 4511.10 0.10 -144.67 -0.03
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.
19GT184 quality flag:2 Type: CLASSICAL 9:5EEEE CLASSICAL axisobj 43.805 44.374 43.778 ecceobj 0.067 0.133 0.066 incobj 3.981 3.984 3.981 qmin 40.273 38.126 40.252 qmax 47.905 51.411 47.894 amean 43.984 44.554 43.952 amin 43.643 44.131 43.608 amax 44.352 45.006 44.315 emean 0.065 0.129 0.065 emin 0.048 0.115 0.048 emax 0.081 0.142 0.081 imean 2.594 2.652 2.597 imin 1.823 1.836 1.830 imax 3.282 3.334 3.283 excite_mean 0.079 0.137 0.080 fracstop 1.000 1.000 1.000 cjmean 3.094 3.085 3.093 libcent 0 -180.0 182.2 -180.0 libamp 0 -180.0 152.6 -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 180.4 176.2 178.0 kozaiamp 180.0 180.0 180.0