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: 19VZ50
# Created Mon Apr 28 01:11:19 2025
# Orbit generated from Bernstein formalism
# Fitting 22 observations of 22
# Arc: 2.43y
# First observation: 2017/06/24
# Last observation: 2019/11/29
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.027480 0.000001 0.001990 0.026660 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# Chi-squared of fit: 25.05 DOF: 38 RMS: 0.19
# Min/Max residuals: -0.47 0.37
# Exact a, adot, b, bdot, g, gdot:
1.609440E-05 2.682527E-02 1.092985E-06 2.010151E-03 2.574609E-02 6.643841E-03
# Covariance matrix:
4.9967E-13 1.5012E-11 -2.9228E-15 1.2615E-12 1.4083E-11 2.6470E-10
1.5012E-11 2.2630E-08 -4.4903E-12 1.8673E-09 2.0980E-08 3.9203E-07
-2.9228E-15 -4.4903E-12 4.8958E-13 -5.7560E-13 -4.1661E-12 -7.7654E-11
1.2615E-12 1.8673E-09 -5.7560E-13 1.5423E-10 1.7310E-09 3.2358E-08
1.4083E-11 2.0980E-08 -4.1661E-12 1.7310E-09 1.9451E-08 3.6341E-07
2.6470E-10 3.9203E-07 -7.7654E-11 3.2358E-08 3.6341E-07 6.7931E-06
# lat0 lon0 xBary yBary zBary JD0
3.068431 -9.028862 0.988979 0.011452 -0.212297 2457929.002491
# Heliocentric elements and errors
Epoch: 2457920.5000 = 2017/06/16
Mean Anomaly: 43.99661 +/- 3.179
Argument of Peri: 325.36041 +/- 7.868
Long of Asc Node: 314.48023 +/- 0.045
Inclination: 5.30507 +/- 0.005
Eccentricity: 0.25822330 +/- 0.0964
Semi-Major Axis: 45.58904799 +/- 2.1825
Time of Perihelion: 2444179.8922 +/- 108.8
Perihelion: 33.81689363 +/- 4.6846
Aphelion: 57.36120235 +/- 5.1832
Period (y) 307.8215 +/- 22.10
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 38.35668209 +/- 0.2075
Ecliptic Y -7.10117402 +/- 0.0330
Ecliptic Z 2.07921048 +/- 0.0113
Ecliptic XDOT 0.00113749 +/- 0.0003
Ecliptic YDOT 0.00270229 +/- 0.0000
Ecliptic ZDOT 0.00025117 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 39.06385606 +/- 0.2038
Geocenter to KBO 38.84084442 +/- 0.2104
# Hcoef: 8.57
The following table shows the complete astrometric record for 19VZ50. 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 (19VZ50) followed by the observatory code and reference code for the source of the astrometry.
2017 06 24.50169 23 21 59.51 -00 45 27.5 24.3i 19VZ50 T09 C~7xXH 2017 06 24.58263 23 21 59.47 -00 45 27.2 24.1i 19VZ50 T09 C~7xXH 2017 06 24.60432 23 21 59.46 -00 45 27.2 23.8i 19VZ50 T09 C~7xXH 2019 10 27.21084 23 25 42.23 -00 01 26.0 24.9r 19VZ50 T09 C~7xXH 2019 10 27.22075 23 25 42.20 -00 01 26.2 24.6r 19VZ50 T09 C~7xXH 2019 10 27.23054 23 25 42.17 -00 01 26.4 24.6r 19VZ50 T09 C~7xXH 2019 10 27.24037 23 25 42.13 -00 01 26.7 24.4r 19VZ50 T09 C~7xXH 2019 10 27.24524 23 25 42.11 -00 01 26.7 24.7r 19VZ50 T09 C~7xXH 2019 11 01.21232 23 25 27.13 -00 03 18.1 25.0g 19VZ50 T09 C~7xXH 2019 11 01.29000 23 25 26.92 -00 03 19.8 25.2g 19VZ50 T09 C~7xXH 2019 11 01.29495 23 25 26.89 -00 03 20.1 24.6g 19VZ50 T09 C~7xXH 2019 11 01.37860 23 25 26.64 -00 03 21.8 24.9g 19VZ50 T09 C~7xXH 2019 11 01.45822 23 25 26.42 -00 03 23.5 25.1g 19VZ50 T09 C~7xXH 2019 11 02.20667 23 25 24.34 -00 03 38.6 24.1i 19VZ50 T09 C~7xXH 2019 11 02.22066 23 25 24.32 -00 03 38.7 24.6i 19VZ50 T09 C~7xXH 2019 11 02.23475 23 25 24.28 -00 03 39.2 23.5i 19VZ50 T09 C~7xXH 2019 11 29.20828 23 24 40.21 -00 10 07.6 24.6r 19VZ50 T09 C~7xXH 2019 11 29.21333 23 24 40.20 -00 10 07.8 24.9r 19VZ50 T09 C~7xXH 2019 11 29.21828 23 24 40.20 -00 10 07.8 24.9r 19VZ50 T09 C~7xXH 2019 11 29.22334 23 24 40.20 -00 10 07.8 25.2r 19VZ50 T09 C~7xXH 2019 11 29.24183 23 24 40.19 -00 10 07.9 24.6r 19VZ50 T09 C~7xXH 2019 11 29.24675 23 24 40.19 -00 10 07.9 24.6r 19VZ50 T09 C~7xXH
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 0.03
2 0.0002 -0.43 -0.01 0.51 0.04
3 0.0003 -0.57 -0.05 0.57 -0.04
4 2.3401 4110.53 0.10 1116.45 0.07
5 2.3401 4110.04 0.15 1116.44 0.09
6 2.3401 4109.55 0.19 1116.44 0.10
7 2.3401 4108.88 0.05 1116.40 0.08
8 2.3402 4108.60 0.04 1116.51 0.21
9 2.3538 3858.11 -0.10 1102.36 -0.25
10 2.3540 3854.54 0.12 1102.04 -0.39
11 2.3540 3854.01 -0.17 1101.94 -0.47
12 2.3542 3849.89 -0.23 1101.85 -0.36
13 2.3544 3846.19 -0.10 1101.58 -0.42
14 2.3565 3811.55 0.02 1099.96 0.27
15 2.3565 3811.23 0.37 1099.98 0.33
16 2.3566 3810.49 0.29 1099.76 0.15
17 2.4304 3049.76 0.12 1002.33 0.17
18 2.4304 3049.55 -0.05 1002.21 0.06
19 2.4304 3049.55 -0.00 1002.21 0.08
20 2.4304 3049.55 0.05 1002.21 0.10
21 2.4305 3049.37 0.05 1002.18 0.13
22 2.4305 3049.37 0.10 1002.18 0.15
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.
19VZ50 quality flag:1 Type: SCATNEAR CENTAURR SCATNEAR axisobj 45.857 57.739 42.432 ecceobj 0.259 0.501 0.049 incobj 5.305 5.288 5.322 qmin 33.219 28.500 37.360 qmax 60.358 86.673 47.616 amean 45.687 57.152 42.328 amin 44.892 56.631 41.928 amax 47.182 57.739 42.786 emean 0.248 0.496 0.069 emin 0.203 0.489 0.032 emax 0.282 0.502 0.116 imean 5.577 6.820 6.551 imin 3.303 6.717 4.858 imax 7.487 6.893 8.166 excite_mean 0.267 0.510 0.135 fracstop 1.000 0.001 1.000 cjmean 3.033 2.900 3.060 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 178.9 325.1 158.9 kozaiamp 180.0 1.8 179.8