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 Sun Dec 22 02:11:10 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 30 observations of 30
# Arc: 8.24y
# First observation: 2016/07/07
# Last observation: 2024/10/01
# Chi-squared of fit: 13.95 DOF: 54 RMS: 0.12
# Min/Max residuals: -0.37 0.32
# Exact a, adot, b, bdot, g, gdot:
1.117929E-05 1.266530E-02 -3.277009E-06 -4.222476E-03 1.789654E-02 -2.494738E-03
# Covariance matrix:
2.0676E-13 8.8519E-14 1.6653E-14 -2.6218E-14 2.7461E-13 8.5279E-13
8.8519E-14 2.2837E-13 4.4090E-14 -6.2953E-14 4.3426E-13 2.0390E-12
1.6653E-14 4.4090E-14 1.0842E-13 -3.2984E-14 8.1134E-14 4.2141E-13
-2.6218E-14 -6.2953E-14 -3.2984E-14 2.6147E-14 -1.1859E-13 -5.9495E-13
2.7461E-13 4.3426E-13 8.1134E-14 -1.1859E-13 9.2352E-13 3.8451E-12
8.5279E-13 2.0390E-12 4.2141E-13 -5.9495E-13 3.8451E-12 1.9260E-11
# lat0 lon0 xBary yBary zBary JD0
4.968663 -8.270571 0.926816 0.035971 -0.412594 2457576.995399
# Heliocentric elements and errors
Epoch: 2457576.5000 = 2016/07/07
Mean Anomaly: 237.85542 +/- 0.073
Argument of Peri: 308.47969 +/- 0.054
Long of Asc Node: 185.19995 +/- 0.000
Inclination: 19.11082 +/- 0.000
Eccentricity: 0.26815002 +/- 0.0001
Semi-Major Axis: 47.54647784 +/- 0.0092
Time of Perihelion: 2498206.5783 +/- 33.4
Perihelion: 34.79688885 +/- 0.0090
Aphelion: 60.29606684 +/- 0.0131
Period (y) 327.8580 +/- 0.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 55.36071470 +/- 0.0030
Ecliptic Y -8.98640077 +/- 0.0004
Ecliptic Z 4.83941076 +/- 0.0003
Ecliptic XDOT -0.00004117 +/- 0.0000
Ecliptic YDOT 0.00195704 +/- 0.0000
Ecliptic ZDOT -0.00067660 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 56.29386225 +/- 0.0029
Geocenter to KBO 55.87685228 +/- 0.0030
# 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 07 07.49461 23 21 47.06 +01 17 13.0 24.9g 19UZ173 T09 C~89WX 2016 07 07.57490 23 21 46.96 +01 17 12.8 24.7g 19UZ173 T09 C~89WX 2016 07 07.58554 23 21 46.95 +01 17 12.6 25.1g 19UZ173 T09 C~89WX 2016 07 07.59400 23 21 46.93 +01 17 12.6 24.8g 19UZ173 T09 C~89WX 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 2024 10 01.263240 23 42 59.073 +01 21 52.71 23.6G 19UZ173 G37 C~8HVO 2024 10 01.302900 23 42 58.928 +01 21 51.59 19UZ173 G37 C~8HVO 2024 10 01.341380 23 42 58.799 +01 21 50.53 19UZ173 G37 C~8HVO
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 -0.09
2 0.0002 0.00 0.03 0.00 0.10
3 0.0002 0.00 0.08 0.00 -0.05
4 0.0003 0.00 -0.06 0.00 -0.01
5 0.0684 0.00 -0.03 0.00 0.15
6 0.0685 0.00 -0.00 0.00 0.00
7 0.0686 0.00 -0.11 0.00 0.08
8 0.0687 0.00 0.22 0.00 -0.06
9 0.1475 0.00 -0.06 0.00 -0.09
10 0.1475 0.00 0.08 0.00 -0.03
11 0.1475 0.00 0.04 0.00 -0.15
12 0.1476 0.00 -0.12 0.00 0.08
13 3.3038 0.00 0.02 0.00 0.32
14 3.3038 0.00 -0.07 0.00 0.23
15 3.3039 0.00 -0.11 0.00 0.15
16 3.3039 0.00 -0.08 0.00 -0.14
17 3.3175 0.00 0.11 0.00 -0.37
18 3.3177 0.00 0.11 0.00 -0.21
19 3.3180 0.00 0.01 0.00 -0.13
20 3.3182 0.00 0.04 0.00 -0.03
21 3.3941 0.00 0.06 0.00 -0.02
22 3.3942 0.00 -0.17 0.00 -0.02
23 3.3942 0.00 -0.26 0.00 0.08
24 3.3996 0.00 0.11 0.00 0.16
25 3.3997 0.00 0.19 0.00 0.09
26 3.3997 0.00 -0.04 0.00 0.02
27 3.3997 0.00 0.02 0.00 0.02
28 8.2348 0.00 0.07 0.00 0.07
29 8.2349 0.00 -0.06 0.00 -0.04
30 8.2350 0.00 -0.02 0.00 -0.11
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 47.936 47.936 47.936 ecceobj 0.263 0.263 0.263 incobj 18.979 18.979 18.979 qmin 33.579 33.579 33.579 qmax 62.588 62.581 62.594 amean 47.797 47.797 47.797 amin 47.301 47.301 47.301 amax 48.387 48.388 48.389 emean 0.257 0.257 0.257 emin 0.209 0.209 0.209 emax 0.295 0.295 0.295 imean 19.671 19.671 19.670 imin 18.377 18.376 18.377 imax 20.979 20.979 20.979 excite_mean 0.424 0.424 0.424 fracstop 1.000 1.000 1.000 cjmean 2.923 2.923 2.923 libcent 0 285.8 285.8 285.8 libamp 0 23.1 23.1 23.0 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 190.5 190.5 190.5 kozaiamp 179.9 179.9 180.0