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: 19GZ184
# Created Mon Apr 28 01:11:15 2025
# Orbit generated from Bernstein formalism
# Fitting 28 observations of 28
# Arc: 4.19y
# First observation: 2015/01/25
# Last observation: 2019/04/05
Preliminary a, adot, b, bdot, g, gdot:
-0.000271 0.028698 0.000036 0.009979 0.026822 0.000000
# Chi-squared of fit: 22.53 DOF: 50 RMS: 0.16
# Min/Max residuals: -0.41 0.27
# Exact a, adot, b, bdot, g, gdot:
1.647550E-05 2.888520E-02 6.770096E-06 1.008413E-02 2.706022E-02 5.370744E-03
# Covariance matrix:
5.2097E-13 1.2242E-13 -2.3223E-14 7.7254E-14 4.0952E-13 1.8212E-12
1.2242E-13 4.0374E-13 -4.7217E-14 1.6590E-13 3.4713E-13 3.8667E-12
-2.3223E-14 -4.7217E-14 2.1057E-13 -7.2855E-14 -4.4424E-14 -4.7401E-13
7.7254E-14 1.6590E-13 -7.2855E-14 8.9570E-14 1.5147E-13 1.6643E-12
4.0952E-13 3.4713E-13 -4.4424E-14 1.5147E-13 5.8071E-13 3.5523E-12
1.8212E-12 3.8667E-12 -4.7401E-13 1.6643E-12 3.5523E-12 3.8795E-11
# lat0 lon0 xBary yBary zBary JD0
1.401482 176.233855 0.766518 0.015175 -0.614028 2457048.074250
# Heliocentric elements and errors
Epoch: 2457040.5000 = 2015/01/18
Mean Anomaly: 21.37981 +/- 0.017
Argument of Peri: 324.17228 +/- 0.038
Long of Asc Node: 171.10815 +/- 0.000
Inclination: 19.22612 +/- 0.000
Eccentricity: 0.29896656 +/- 0.0002
Semi-Major Axis: 50.71689217 +/- 0.0067
Time of Perihelion: 2449205.6869 +/- 6.0
Perihelion: 35.55423727 +/- 0.0092
Aphelion: 65.87954706 +/- 0.0118
Period (y) 361.1912 +/- 0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -37.42929211 +/- 0.0010
Ecliptic Y 3.23193561 +/- 0.0001
Ecliptic Z 0.90407467 +/- 0.0000
Ecliptic XDOT -0.00071294 +/- 0.0000
Ecliptic YDOT -0.00288755 +/- 0.0000
Ecliptic ZDOT 0.00103336 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 37.57944474 +/- 0.0010
Geocenter to KBO 36.95461761 +/- 0.0010
# Hcoef: 7.39
The following table shows the complete astrometric record for 19GZ184. 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 (19GZ184) followed by the observatory code and reference code for the source of the astrometry.
2015 01 25.573472 11 48 24.22 +02 47 00.1 19GZ184 T09 C~870j 2015 01 25.636988 11 48 24.06 +02 47 01.7 19GZ184 T09 C~870j 2015 04 14.052108 11 42 53.75 +03 31 31.0 22.3Y 19GZ184 W91 C~870j 2015 04 14.067486 11 42 53.67 +03 31 31.3 22.7z 19GZ184 W91 C~870j 2015 04 14.070821 11 42 53.66 +03 31 31.3 22.9z 19GZ184 W91 C~870j 2015 04 14.074148 11 42 53.65 +03 31 31.5 19GZ184 W91 C~870j 2015 04 17.096740 11 42 41.53 +03 33 04.7 23.2r 19GZ184 W84 C~870j 2016 04 08.123763 11 50 19.20 +03 20 48.0 22.9r 19GZ184 W84 C~870j 2018 04 12.140218 12 03 58.46 +03 06 35.5 23.3V 19GZ184 W84 C~870j 2018 04 13.136816 12 03 54.15 +03 07 07.3 23.2V 19GZ184 W84 C~870j 2018 04 22.367255 12 03 16.23 +03 11 44.6 19GZ184 T09 C~870j 2018 05 16.974302 12 02 00.01 +03 20 49.4 23.2r 19GZ184 W84 C~870j 2019 02 05.527701 12 15 26.12 +02 20 17.5 19GZ184 T09 C~870j 2019 02 05.627630 12 15 25.86 +02 20 20.1 19GZ184 T09 C~870j 2019 02 06.306743 12 15 23.96 +02 20 39.9 23.6g 19GZ184 W84 C~870j 2019 03 03.52832 12 13 51.92 +02 34 39.5 23.0z 19GZ184 T09 C~83GG 2019 03 03.56874 12 13 51.73 +02 34 41.1 22.9z 19GZ184 T09 C~83GG 2019 03 03.62241 12 13 51.48 +02 34 43.1 22.8z 19GZ184 T09 C~83GG 2019 03 03.62510 12 13 51.48 +02 34 42.9 22.9z 19GZ184 T09 C~83GG 2019 04 04.44950 12 11 24.61 +02 54 02.3 23.8g 19GZ184 T09 C~83GG 2019 04 04.45934 12 11 24.57 +02 54 02.8 23.8g 19GZ184 T09 C~83GG 2019 04 04.49303 12 11 24.40 +02 54 03.8 23.7g 19GZ184 T09 C~83GG 2019 04 04.51189 12 11 24.30 +02 54 04.5 23.8g 19GZ184 T09 C~83GG 2019 04 04.51398 12 11 24.30 +02 54 04.5 23.7g 19GZ184 T09 C~83GG 2019 04 05.52240 12 11 19.67 +02 54 39.6 23.2r 19GZ184 T09 C~83GG 2019 04 05.55592 12 11 19.53 +02 54 40.8 23.1r 19GZ184 T09 C~83GG 2019 04 05.57477 12 11 19.43 +02 54 41.5 23.4r 19GZ184 T09 C~83GG 2019 04 05.57686 12 11 19.43 +02 54 41.5 23.2r 19GZ184 T09 C~83GG
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 -0.18
2 0.0002 -2.84 0.15 0.52 -0.11
3 0.2149 -5604.38 0.05 487.77 0.27
4 0.2149 -5605.60 -0.10 487.57 0.01
5 0.2149 -5605.74 -0.01 487.51 -0.07
6 0.2149 -5605.95 0.01 487.63 0.05
7 0.2232 -5809.64 -0.10 501.34 0.13
8 1.2007 774.03 -0.04 2545.60 -0.12
9 3.2103 12383.22 0.00 6671.58 0.10
10 3.2130 12311.04 0.08 6674.79 0.05
11 3.2383 11677.14 -0.05 6700.88 -0.06
12 3.3057 10408.80 -0.24 6742.08 -0.09
13 4.0300 23024.36 -0.41 8288.31 0.08
14 4.0303 23019.69 0.06 8289.12 -0.02
15 4.0321 22985.22 0.03 8295.77 -0.08
16 4.1012 21365.33 0.15 8507.79 0.14
17 4.1013 21362.04 -0.08 8508.11 0.19
18 4.1014 21357.76 -0.30 8508.42 0.15
19 4.1014 21357.84 -0.01 8508.24 -0.05
20 4.1886 18851.47 0.18 8681.16 -0.26
21 4.1886 18850.71 0.20 8681.37 -0.07
22 4.1887 18847.95 0.10 8681.26 -0.30
23 4.1887 18846.29 -0.08 8681.30 -0.32
24 4.1887 18846.29 0.08 8681.30 -0.33
25 4.1915 18767.96 -0.02 8685.43 0.13
26 4.1916 18765.54 0.17 8685.68 0.27
27 4.1917 18763.87 -0.03 8685.72 0.25
28 4.1917 18763.87 0.14 8685.72 0.24
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.
19GZ184 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 50.237 50.258 50.216 ecceobj 0.293 0.294 0.293 incobj 19.295 19.295 19.295 qmin 35.053 34.870 34.110 qmax 66.571 66.751 67.637 amean 50.415 50.415 50.429 amin 49.870 49.904 49.857 amax 51.076 51.073 51.146 emean 0.294 0.295 0.298 emin 0.284 0.282 0.280 emax 0.305 0.308 0.324 imean 18.747 18.676 18.573 imin 18.411 18.365 17.430 imax 19.031 19.102 19.257 excite_mean 0.435 0.435 0.436 fracstop 1.000 1.000 1.000 cjmean 2.940 2.940 2.939 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 170.6 161.1 171.6 kozaiamp 180.0 180.0 180.0