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: 22UY172
# Created Tue Sep 2 01:12:13 2025
# Orbit generated from Bernstein formalism
# Fitting 6 observations of 6
# Arc: 21.77d
# First observation: 2022/10/29
# Last observation: 2022/11/20
Preliminary a, adot, b, bdot, g, gdot:
-0.000000 0.014826 0.000000 -0.003583 0.016842 0.000000
# WARNING Fitting with energy constraint
# Chi-squared of fit: 2.55 DOF: 7 RMS: 0.12
# Min/Max residuals: -0.15 0.23
# Exact a, adot, b, bdot, g, gdot:
1.157423E-05 1.245660E-02 -3.171430E-06 -3.757454E-03 1.644878E-02 -4.082850E-03
# Covariance matrix:
1.9936E-12 1.1511E-09 3.6907E-14 8.0026E-11 2.1031E-10 -1.1540E-09
1.1511E-09 1.0494E-06 3.2957E-11 7.2199E-08 1.8912E-07 -1.4729E-06
3.6907E-14 3.2957E-11 6.9909E-13 -1.1054E-11 5.9811E-12 5.0149E-12
8.0026E-11 7.2199E-08 -1.1054E-11 5.3659E-09 1.3002E-08 -1.2110E-07
2.1031E-10 1.8912E-07 5.9811E-12 1.3002E-08 3.4142E-08 -2.0596E-07
-1.1540E-09 -1.4729E-06 5.0149E-12 -1.2110E-07 -2.0596E-07 7.9623E-05
# lat0 lon0 xBary yBary zBary JD0
7.191915 17.670451 -0.307407 0.117157 -0.929995 2459881.757931
# Heliocentric elements and errors
Epoch: 2459880.5000 = 2022/10/28
Mean Anomaly: 302.35137 +/- 60.632
Argument of Peri: 248.73815 +/- 24.918
Long of Asc Node: 220.20253 +/- 2.013
Inclination: 18.16654 +/- 1.458
Eccentricity: 0.30252893 +/- 0.6767
Semi-Major Axis: 67.22495481 +/- 32.7743
Time of Perihelion: 2492119.4372 +/- 24369.8
Perihelion: 46.88746144 +/- 50.9134
Aphelion: 87.56244817 +/- 62.3861
Period (y) 551.1934 +/- 403.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X 58.27935160 +/- 0.6456
Ecliptic Y 18.88600305 +/- 0.2056
Ecliptic Z 7.61089434 +/- 0.0855
Ecliptic XDOT -0.00119731 +/- 0.0014
Ecliptic YDOT 0.00180371 +/- 0.0004
Ecliptic ZDOT -0.00070565 +/- 0.0002
# Distances at JD0 (AU)
Heliocenter to KBO 61.73402342 +/- 0.6128
Geocenter to KBO 60.79479845 +/- 0.6829
# Hcoef: 7.20
The following table shows the complete astrometric record for 22UY172. 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 (22UY172) followed by the observatory code and reference code for the source of the astrometry.
2022 10 29.25713 00 53 53.842 +13 34 16.54 24.8r 22UY172 T09 C~90JZ 2022 10 29.46481 00 53 53.204 +13 34 11.80 25.0r 22UY172 T09 C~90JZ 2022 11 15.24420 00 53 07.999 +13 27 52.79 22UY172 G37 C~90JZ 2022 11 15.25144 00 53 08.003 +13 27 52.55 22UY172 G37 C~90JZ 2022 11 19.02517 00 52 59.242 +13 26 31.24 25.1r 22UY172 269 C~90JZ 2022 11 20.02792 00 52 57.027 +13 26 10.18 25.2r 22UY172 269 C~90JZ
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 -0.09
2 0.0006 -10.41 -0.09 -0.74 0.04
3 0.0465 -765.34 -0.09 -92.40 0.23
4 0.0465 -765.38 0.17 -92.64 0.03
5 0.0569 -914.80 -0.11 -117.56 -0.15
6 0.0596 -952.78 0.05 -124.32 -0.07
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.
22UY172 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0