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: 19UZ173
# Created Tue May 7 01:17:40 2024
# Orbit generated from Bernstein formalism
# Fitting 23 observations of 23
# Arc: 3.33y
# First observation: 2016/08/01
# Last observation: 2019/12/01
Preliminary a, adot, b, bdot, g, gdot:
0.000035 0.012864 -0.000004 -0.004260 0.018258 0.000000
# Chi-squared of fit: 12.48 DOF: 40 RMS: 0.13
# Min/Max residuals: -0.39 0.28
# Exact a, adot, b, bdot, g, gdot:
1.121603E-05 1.273786E-02 -4.464787E-06 -4.244700E-03 1.800959E-02 -2.544235E-03
# Covariance matrix:
3.6719E-13 6.0987E-13 7.6146E-16 -2.5900E-13 9.8076E-13 1.8343E-11
6.0987E-13 3.1931E-12 2.6721E-14 -1.5752E-12 3.7817E-12 1.1018E-10
7.6146E-16 2.6721E-14 1.8801E-13 -7.9680E-14 9.1940E-15 1.5320E-12
-2.5900E-13 -1.5752E-12 -7.9680E-14 9.4503E-13 -1.5410E-12 -6.3828E-11
9.8076E-13 3.7817E-12 9.1940E-15 -1.5410E-12 5.3743E-12 1.0884E-10
1.8343E-11 1.1018E-10 1.5320E-12 -6.3828E-11 1.0884E-10 4.4369E-09
# lat0 lon0 xBary yBary zBary JD0
4.982408 -8.476266 0.677065 0.065796 -0.753420 2457601.990399
# Heliocentric elements and errors
Epoch: 2457600.5000 = 2016/07/31
Mean Anomaly: 237.39472 +/- 0.771
Argument of Peri: 308.77556 +/- 0.669
Long of Asc Node: 185.19976 +/- 0.001
Inclination: 19.11099 +/- 0.001
Eccentricity: 0.26706642 +/- 0.0024
Semi-Major Axis: 47.51772479 +/- 0.0645
Time of Perihelion: 2498346.8352 +/- 242.5
Perihelion: 34.82733611 +/- 0.1228
Aphelion: 60.20811347 +/- 0.1398
Period (y) 327.5606 +/- 0.67
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 55.35660720 +/- 0.0070
Ecliptic Y -8.93701465 +/- 0.0011
Ecliptic Z 4.82222656 +/- 0.0006
Ecliptic XDOT -0.00003897 +/- 0.0000
Ecliptic YDOT 0.00195681 +/- 0.0000
Ecliptic ZDOT -0.00067646 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 56.28035235 +/- 0.0069
Geocenter to KBO 55.52598264 +/- 0.0071
# Hcoef: 6.78
The following table shows the complete astrometric record for 19UZ173. 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 (19UZ173) followed by the observatory code and reference code for the source of the astrometry.
2016 08 01.48961 23 21 00.54 +01 13 08.1 24.1z 19UZ173 T09 C~7wP8 2016 08 01.51402 23 21 00.48 +01 13 07.6 24.2z 19UZ173 T09 C~7wP8 2016 08 01.54663 23 21 00.39 +01 13 07.2 24.3z 19UZ173 T09 C~7wP8 2016 08 01.57101 23 21 00.35 +01 13 06.7 24.1z 19UZ173 T09 C~7wP8 2016 08 30.35300 23 19 34.83 +01 04 01.3 23.9i 19UZ173 T09 C~7wP8 2016 08 30.35569 23 19 34.83 +01 04 01.3 24.1i 19UZ173 T09 C~7wP8 2016 08 30.36379 23 19 34.80 +01 04 01.0 23.9i 19UZ173 T09 C~7wP8 2016 08 30.40500 23 19 34.65 +01 04 00.3 23.9i 19UZ173 T09 C~7wP8 2019 10 27.21084 23 25 52.34 +00 52 26.3 24.4r 19UZ173 T09 C~7wP8 2019 10 27.22075 23 25 52.31 +00 52 26.0 24.3r 19UZ173 T09 C~7wP8 2019 10 27.24037 23 25 52.26 +00 52 25.5 24.3r 19UZ173 T09 C~7wP8 2019 10 27.24524 23 25 52.25 +00 52 25.1 24.5r 19UZ173 T09 C~7wP8 2019 11 01.21232 23 25 41.06 +00 50 41.7 24.4g 19UZ173 T09 C~7wP8 2019 11 01.29000 23 25 40.89 +00 50 40.3 24.6g 19UZ173 T09 C~7wP8 2019 11 01.37860 23 25 40.69 +00 50 38.6 24.4g 19UZ173 T09 C~7wP8 2019 11 01.45822 23 25 40.52 +00 50 37.1 24.2g 19UZ173 T09 C~7wP8 2019 11 29.20334 23 25 04.29 +00 43 27.7 24.5r 19UZ173 T09 C~7wP8 2019 11 29.21333 23 25 04.27 +00 43 27.6 24.3r 19UZ173 T09 C~7wP8 2019 11 29.24183 23 25 04.25 +00 43 27.4 24.4r 19UZ173 T09 C~7wP8 2019 12 01.21144 23 25 03.58 +00 43 08.1 24.2i 19UZ173 T09 C~7wP8 2019 12 01.22561 23 25 03.58 +00 43 07.9 24.0i 19UZ173 T09 C~7wP8 2019 12 01.23967 23 25 03.56 +00 43 07.7 24.0i 19UZ173 T09 C~7wP8 2019 12 01.25018 23 25 03.56 +00 43 07.6 23.9i 19UZ173 T09 C~7wP8
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 0.15
2 0.0001 -1.02 -0.04 -0.11 0.01
3 0.0002 -2.42 -0.11 0.06 0.12
4 0.0002 -3.17 0.14 -0.17 -0.14
5 0.0790 -1396.88 -0.05 3.24 -0.06
6 0.0790 -1396.88 0.09 3.24 -0.06
7 0.0791 -1397.41 0.01 3.14 -0.15
8 0.0792 -1399.76 -0.04 3.38 0.13
9 3.2354 3535.65 0.16 -2863.50 0.28
10 3.2354 3535.12 0.04 -2863.60 0.24
11 3.2355 3534.23 -0.02 -2863.76 0.18
12 3.2355 3533.94 -0.11 -2864.07 -0.11
13 3.2491 3338.90 -0.04 -2893.15 -0.39
14 3.2493 3336.00 0.02 -2893.43 -0.24
15 3.2495 3332.57 -0.03 -2893.81 -0.13
16 3.2497 3329.64 0.03 -2894.19 -0.05
17 3.3257 2660.97 0.03 -3075.31 -0.06
18 3.3257 2660.66 -0.18 -3075.29 0.03
19 3.3258 2660.30 -0.22 -3075.35 0.16
20 3.3312 2643.47 0.15 -3089.15 0.08
21 3.3312 2643.39 0.20 -3089.33 -0.01
22 3.3313 2643.04 -0.04 -3089.40 0.02
23 3.3313 2643.00 0.01 -3089.49 -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.
19UZ173 quality flag:3 Type: 2:1E 2:1E 2:1E axisobj 47.906 48.097 47.727 ecceobj 0.262 0.269 0.255 incobj 18.978 18.978 18.979 qmin 33.072 34.227 32.683 qmax 63.059 62.117 63.879 amean 47.797 47.796 47.795 amin 47.299 47.247 47.148 amax 48.415 48.437 48.594 emean 0.263 0.226 0.280 emin 0.207 0.176 0.237 emax 0.305 0.283 0.317 imean 19.507 20.596 18.011 imin 18.051 18.698 16.586 imax 21.063 22.063 19.548 excite_mean 0.426 0.419 0.418 fracstop 1.000 1.000 1.000 cjmean 2.921 2.926 2.929 libcent 0 284.5 275.5 262.6 libamp 0 25.9 47.1 70.6 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 191.4 193.2 167.0 kozaiamp 180.0 180.0 180.0