Orbit Fit and Astrometric record for 14UZ228

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: 14UZ228   
# Created Tue Nov 30 02:12:53 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     34 observations of     34
# Arc:   6.21y
# First observation: 2013/08/09
#  Last observation: 2019/10/26
# Chi-squared of fit:    11.09 DOF:     62 RMS:  0.10
# Min/Max residuals:    -0.44    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.882894E-05  3.643401E-02  4.921658E-07  2.915736E-04  3.080753E-02 -3.625962E-03
# Covariance matrix:
  2.4959E-13 -1.5109E-13  4.8643E-16 -2.0102E-15  6.9891E-14 -5.8130E-13
 -1.5109E-13  2.1127E-13 -2.0390E-15  2.5950E-15  3.0544E-14  8.9398E-13
  4.8643E-16 -2.0390E-15  7.5672E-14 -2.6813E-14 -1.1499E-15 -9.6252E-15
 -2.0102E-15  2.5950E-15 -2.6813E-14  2.1293E-14  1.1375E-16  1.2197E-14
  6.9891E-14  3.0544E-14 -1.1499E-15  1.1375E-16  9.2101E-14  1.4711E-13
 -5.8130E-13  8.9398E-13 -9.6252E-15  1.2197E-14  1.4711E-13  4.2061E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.620496   28.939116    0.966702    0.014266   -0.310978  2456514.012218
# Heliocentric elements and errors
Epoch:              2456514.5000  =  2013/08/10
Mean Anomaly:          331.18911 +/-     0.010
Argument of Peri:      122.50282 +/-     0.018
Long of Asc Node:      309.03219 +/-     0.005
Inclination:             2.65023 +/-     0.000
Eccentricity:         0.21692032 +/-    0.0000
Semi-Major Axis:     39.74878272 +/-    0.0021
Time of Perihelion: 2463840.0194 +/-       7.1
Perihelion:          31.12646419 +/-    0.0022
Aphelion:            48.37110125 +/-    0.0030
Period (y)              250.6074 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.11661287 +/-    0.0003
Ecliptic Y           14.99780020 +/-    0.0001
Ecliptic Z            1.48411949 +/-    0.0000
Ecliptic XDOT        -0.00185570 +/-    0.0000
Ecliptic YDOT         0.00267635 +/-    0.0000
Ecliptic ZDOT         0.00001129 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.78595656 +/-    0.0003
Geocenter to KBO     32.45967807 +/-    0.0003
# Hcoef:  8.82

The following table shows the complete astrometric record for 14UZ228. 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 (14UZ228) followed by the observatory code and reference code for the source of the astrometry.

2013 08  09.51144  01 43 46.209  +13 32 44.91  24.1r 14UZ228   568  C~2SDi      
2013 08  09.55415  01 43 46.168  +13 32 45.11  24.3r 14UZ228   568  C~2SDi      
2013 10  08.50929  01 40 00.135  +13 15 13.04  23.6r 14UZ228   568  C~2SDi      
2013 11  01.50542  01 37 41.663  +13 02 12.75  23.8r 14UZ228   568  C~2SDi      
2013 11  28.29208  01 35 27.871  +12 48 30.02  23.5r 14UZ228   568  C~2SDi      
2013 11  29.24926  01 35 23.981  +12 48 04.36  23.8r 14UZ228   568  C~2SDi      
2013 12  29.26359  01 34 08.092  +12 38 39.87  24.5r 14UZ228   568  C~2SDi      
2014 01  02.24545  01 34 05.587  +12 38 05.50  23.8r 14UZ228   568  C~2SDi      
2014 01  03.21549  01 34 05.256  +12 37 58.75  24.0r 14UZ228   568  C~2SDi      
2014 01  03.25792  01 34 05.252  +12 37 58.42  24.1r 14UZ228   568  C~2SDi      
2014 01  03.32340  01 34 05.237  +12 37 57.85  23.8r 14UZ228   568  C~2SDi      
2014 07  26.53763  01 51 48.516  +14 16 53.98  24.0r 14UZ228   568  C~2SDi      
2014 07  26.58079  01 51 48.551  +14 16 54.49  23.9r 14UZ228   568  C~2SDi      
2014 08  24.47811  01 51 26.402  +14 17 23.33  23.8r 14UZ228   568  C~2SDi      
2014 08  24.54804  01 51 26.225  +14 17 22.72  24.2r 14UZ228   568  C~2SDi      
2014 08  30.45339  01 51 10.405  +14 16 23.71  23.8r 14UZ228   568  C~2SDi      
2014 08  30.55998  01 51 10.042  +14 16 22.33  23.5r 14UZ228   568  C~2SDi      
2014 09  18.47852  01 49 57.359  +14 10 58.48  23.9r 14UZ228   568  C~2SDi      
2014 09  18.52126  01 49 57.158  +14 10 57.52  23.8r 14UZ228   568  C~2SDi      
2014 09  23.51956  01 49 33.209  +14 09 01.42  24.0r 14UZ228   568  C~2SDi      
2014 10  22.30273  01 46 52.899  +13 55 02.32  23.6r 14UZ228   568  C~2SDi      
2014 10  22.34832  01 46 52.635  +13 55 00.80  24.0r 14UZ228   568  C~2SDi      
2014 10  22.39209  01 46 52.369  +13 54 59.38  24.1r 14UZ228   568  C~2SDi      
2014 10  25.50750  01 46 34.011  +13 53 17.78  24.2r 14UZ228   568  C~2SDi      
2014 11  20.23887  01 44 11.953  +13 39 31.53  23.8r 14UZ228   568  C~2SDi      
2014 11  20.37921  01 44 11.250  +13 39 27.34  24.0r 14UZ228   568  C~2SDi      
2014 11  21.28243  01 44 06.850  +13 39 00.48  24.1r 14UZ228   568  C~2SDi      
2014 11  21.43749  01 44 06.085  +13 38 55.75  24.0r 14UZ228   568  C~2SDi      
2015 01  24.25093  01 42 17.770  +13 24 02.62  24.0r 14UZ228   568  C~2SDi      
2015 01  24.31671  01 42 17.884  +13 24 02.98  24.4r 14UZ228   568  C~2SDi      
2015 02  19.26459  01 43 49.194  +13 30 28.84  23.8r 14UZ228   568  C~2SDi      
2015 12  07.41198  01 51 10.873  +14 18 14.20  24.0w 14UZ228   568  C~2SDi      
2019 10  26.378030 02 29 19.914  +17 36 40.76  23.8G 14UZ228   G37  C~3coM      
2019 10  26.454950 02 29 19.414  +17 36 38.66        14UZ228   G37  C~3coM      

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     0.00       0.00    -0.08
     2   0.0001      0.00     0.08       0.00     0.13
     3   0.1643      0.00     0.17       0.00    -0.16
     4   0.2300      0.00     0.03       0.00     0.03
     5   0.3033      0.00    -0.01       0.00     0.21
     6   0.3059      0.00    -0.09       0.00     0.05
     7   0.3881      0.00    -0.12       0.00    -0.00
     8   0.3990      0.00    -0.00       0.00     0.02
     9   0.4017      0.00    -0.18       0.00     0.04
    10   0.4018      0.00    -0.00       0.00    -0.01
    11   0.4019      0.00     0.13       0.00    -0.13
    12   0.9611      0.00     0.01       0.00    -0.04
    13   0.9612      0.00     0.01       0.00     0.02
    14   1.0403      0.00     0.05       0.00     0.02
    15   1.0405      0.00    -0.01       0.00    -0.03
    16   1.0567      0.00     0.07       0.00     0.02
    17   1.0569      0.00    -0.44       0.00    -0.11
    18   1.1087      0.00    -0.05       0.00     0.01
    19   1.1089      0.00    -0.03       0.00    -0.01
    20   1.1225      0.00    -0.03       0.00    -0.03
    21   1.2013      0.00     0.09       0.00     0.04
    22   1.2015      0.00     0.22       0.00    -0.01
    23   1.2016      0.00     0.17       0.00    -0.02
    24   1.2101      0.00    -0.01       0.00    -0.10
    25   1.2806      0.00    -0.04       0.00    -0.07
    26   1.2810      0.00    -0.00       0.00    -0.05
    27   1.2834      0.00     0.03       0.00     0.12
    28   1.2838      0.00     0.09       0.00     0.01
    29   1.4586      0.00     0.02       0.00     0.06
    30   1.4587      0.00    -0.19       0.00     0.03
    31   1.5298      0.00    -0.02       0.00    -0.00
    32   2.3269      0.00     0.10       0.00     0.03
    33   6.2118      0.00     0.16       0.00    -0.05
    34   6.2120      0.00    -0.16       0.00     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.

14UZ228    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.934    39.934    39.934
ecceobj         0.218     0.218     0.218
incobj          2.649     2.649     2.649
qmin           30.646    30.643    30.646
qmax           48.918    48.944    48.921
amean          39.457    39.457    39.457
amin           38.937    38.937    38.938
amax           40.041    40.031    40.042
emean           0.206     0.206     0.206
emin            0.188     0.188     0.188
emax            0.224     0.224     0.224
imean           4.097     4.097     4.097
imin            3.522     3.522     3.522
imax            4.725     4.725     4.726
excite_mean     0.218     0.218     0.218
fracstop        1.000     1.000     1.000
cjmean          2.997     2.997     2.997

libcent 0       179.8     179.7     180.0
libamp  0       108.9     109.4     108.9
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       191.7     191.7     191.7
kozaiamp        180.0     180.0     180.0