Orbit Fit and Astrometric record for 14UH228

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: 14UH228   
# Created Sat Nov 27 02:12:53 2021
# Orbit generated from Bernstein formalism
# Fitting     42 observations of     43
# Arc:   4.06y
# First observation: 2013/08/09
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000176   0.039151   0.000009  -0.000520   0.030999   0.000000
# Chi-squared of fit:    20.38 DOF:     78 RMS:  0.12
# Min/Max residuals:    -0.33    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.860763E-05  3.896896E-02  3.232309E-07 -5.195894E-04  3.103986E-02  4.431597E-03
# Covariance matrix:
  2.0011E-13 -1.1629E-13 -1.4841E-15  3.5107E-16  7.3635E-14 -4.8037E-13
 -1.1629E-13  1.9693E-13  6.0992E-16 -1.5380E-15  3.0951E-14  1.3492E-12
 -1.4841E-15  6.0992E-16  8.4427E-14 -4.4928E-14 -1.1520E-15  3.3010E-15
  3.5107E-16 -1.5380E-15 -4.4928E-14  4.0494E-14 -6.7413E-16 -1.3832E-14
  7.3635E-14  3.0951E-14 -1.1520E-15 -6.7413E-16  9.8737E-14  4.0944E-13
 -4.8037E-13  1.3492E-12  3.3010E-15 -1.3832E-14  4.0944E-13  1.1854E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.071333   26.754725    0.954258    0.018655   -0.347102  2456513.992098
# Heliocentric elements and errors
Epoch:              2456510.5000  =  2013/08/06
Mean Anomaly:            9.25539 +/-     0.008
Argument of Peri:       83.05720 +/-     0.019
Long of Asc Node:      282.79144 +/-     0.005
Inclination:             3.10833 +/-     0.000
Eccentricity:         0.32817061 +/-    0.0001
Semi-Major Axis:     47.82515483 +/-    0.0042
Time of Perihelion: 2453404.6874 +/-       2.8
Perihelion:          32.13034438 +/-    0.0043
Aphelion:            63.51996528 +/-    0.0064
Period (y)              330.7446 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.46586985 +/-    0.0003
Ecliptic Y           13.78962310 +/-    0.0001
Ecliptic Z            1.72619397 +/-    0.0000
Ecliptic XDOT        -0.00120284 +/-    0.0000
Ecliptic YDOT         0.00324518 +/-    0.0000
Ecliptic ZDOT        -0.00002468 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.57868838 +/-    0.0003
Geocenter to KBO     32.21664337 +/-    0.0003
# Hcoef:  9.40

The following table shows the complete astrometric record for 14UH228. 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 (14UH228) followed by the observatory code and reference code for the source of the astrometry.

2013 08  09.49132  01 34 44.223  +13 10 39.08  25.0r 14UH228   568  C~2SDf      
2013 08  09.53475  01 34 44.143  +13 10 39.03  25.1r 14UH228   568  C~2SDf      
2013 09  03.47542  01 33 42.462  +13 06 49.48  24.8r 14UH228   568  C~2SDf      
2013 10  07.36662  01 30 59.059  +12 52 39.45  24.6r 14UH228   568  C~2SDf      
2013 10  08.48584  01 30 52.741  +12 52 04.41  24.3r 14UH228   568  C~2SDf      
2013 10  30.40389  01 28 48.373  +12 39 53.65  23.3r 14UH228   568  C~2SDf      
2013 10  30.48253  01 28 47.902  +12 39 51.22  24.5r 14UH228   568  C~2SDf      
2013 11  01.48006  01 28 36.944  +12 38 43.68  24.0r 14UH228   568  C~2SDf      
2013 11  28.23576  01 26 29.793  +12 24 52.67  24.2r 14UH228   568  C~2SDf      
2013 12  04.37826  01 26 08.137  +12 22 16.02  24.9r 14UH228   568  C~2SDf      
2013 12  29.23912  01 25 20.706  +12 15 12.74  24.3r 14UH228   568  C~2SDf      
2013 12  30.33025  01 25 20.250  +12 15 03.30  24.6r 14UH228   568  C~2SDf      
2014 01  02.22590  01 25 19.698  +12 14 41.44  24.6r 14UH228   568  C~2SDf      
2014 01  02.27308  01 25 19.710  +12 14 40.97  24.7r 14UH228   568  C~2SDf      
2014 01  02.35211  01 25 19.726  +12 14 40.62  24.3r 14UH228   568  C~2SDf      
2014 01  03.23161  01 25 19.748  +12 14 35.05  25.0r 14UH228   568  C~2SDf      
2014 07  26.51805  01 43 20.482  +13 55 57.82  24.8r 14UH228   568  C~2SDf      
2014 07  26.56107  01 43 20.512  +13 55 58.31  24.4r 14UH228   568  C~2SDf      
2014 07  26.60436  01 43 20.528  +13 55 58.57  24.7r 14UH228   568  C~2SDf      
2014 08  24.45388  01 42 53.574  +13 56 03.85  24.7r 14UH228   568  C~2SDf      
2014 08  24.52781  01 42 53.389  +13 56 03.15  24.3r 14UH228   568  C~2SDf      
2014 08  30.43216  01 42 36.829  +13 54 58.28  24.8r 14UH228   568  C~2SDf      
2014 08  30.54047  01 42 36.482  +13 54 56.90  24.9r 14UH228   568  C~2SDf      
2014 09  18.45910  01 41 22.361  +13 49 13.77  24.3r 14UH228   568  C~2SDf      
2014 09  18.50183  01 41 22.166  +13 49 12.88  24.4r 14UH228   568  C~2SDf      
2014 09  23.50009  01 40 58.100  +13 47 11.77  24.4r 14UH228   568  C~2SDf      
2014 10  22.28248  01 38 19.694  +13 32 47.97  23.7r 14UH228   568  C~2SDf      
2014 10  22.32723  01 38 19.435  +13 32 46.50  24.3r 14UH228   568  C~2SDf      
2014 10  22.37167  01 38 19.181  +13 32 45.01  24.1r 14UH228   568  C~2SDf      
2014 10  23.46633  01 38 12.888  +13 32 08.60  24.1r 14UH228   568  C~2SDf      
2014 10  25.48228  01 38 01.312  +13 31 01.60  25.8r 14UH228   568  C~2SDf      
2014 11  20.21348  01 35 45.006  +13 17 05.75  25.1r 14UH228   568  C~2SDf      
2014 11  20.35396  01 35 44.352  +13 17 01.55  24.3r 14UH228   568  C~2SDf      
2014 11  21.25141  01 35 40.232  +13 16 34.33  24.2r 14UH228   568  C~2SDf      
2014 11  21.41785  01 35 39.433  +13 16 29.80  24.2r 14UH228   568  C~2SDf      
2015 02  18.26839  01 35 46.728  +13 08 35.75  25.2r 14UH228   568  C~2SDf      
2015 10  09.42762  01 48 17.748  +14 26 13.78  24.7w 14UH228   568  C~2SDf      
2015 10  09.47042  01 48 17.503  +14 26 12.52  24.3w 14UH228   568  C~2SDf      
2015 12  07.42022  01 43 14.672  +13 56 08.71  24.9w 14UH228   568  C~2SDf      
2016 09  05.56240  01 59 31.389  +15 22 58.18  24.6w 14UH228   568  C~2SDf      
2016 09  06.51122  01 59 28.208  +15 22 45.07  24.9w 14UH228   568  C~2SDf      
2016 09  06.55374  01 59 28.063  +15 22 44.54  24.8w 14UH228   568  C~2SDf      
2017 08  30.58559  02 08 24.897  +16 06 19.67  24.9w 14UH228   568  C~2SDf      

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     0.26       0.00    -0.12
     2   0.0001     -1.11    -0.09       0.38     0.00
     3   0.0684   -923.67     0.01     115.79     0.02
     4   0.1612  -3457.57     0.01     201.57    -0.33
     5   0.1643  -3556.39    -0.01     203.02     0.03
     6   0.2243  -5518.02     0.03     195.75    -0.24
     7   0.2245  -5525.32    -0.26     196.04     0.13
     8   0.2299  -5699.44     0.21     192.69    -0.06
     9   0.3032  -7738.91    -0.04     112.32     0.02
    10   0.3200  -8092.21    -0.03      85.05    -0.08
    11   0.3881  -8896.37    -0.05     -48.65     0.02
    12   0.3911  -8906.12     0.30     -54.92     0.18
    13   0.3990  -8921.81    -0.07     -72.20     0.27
    14   0.3991  -8921.82     0.10     -72.70     0.03
    15   0.3993  -8921.74 (   0.48)    -73.11 (   0.07)
    16   0.4018  -8923.52    -0.16     -78.40     0.12
    17   0.9611   8005.97     0.08    -180.08    -0.10
    18   0.9612   8006.56     0.14    -179.77    -0.05
    19   0.9613   8006.87    -0.05    -179.61    -0.15
    20   1.0403   7641.64    -0.07     -34.56    -0.00
    21   1.0405   7638.87     0.01     -34.25    -0.08
    22   1.0566   7390.18    -0.14      -8.71    -0.07
    23   1.0569   7384.96    -0.16      -8.20    -0.07
    24   1.1087   6253.01     0.00      57.75    -0.05
    25   1.1089   6250.03     0.15      57.94    -0.01
    26   1.1225   5879.04     0.01      70.63     0.04
    27   1.2013   3412.78    -0.05      96.34     0.11
    28   1.2015   3408.73    -0.02      96.34     0.10
    29   1.2016   3404.73     0.05      96.29     0.04
    30   1.2046   3305.98     0.03      95.51    -0.08
    31   1.2101   3124.31    -0.32      94.09     0.13
    32   1.2806    967.42    -0.12      36.74     0.09
    33   1.2809    957.00     0.06      36.30     0.05
    34   1.2834    891.07    -0.02      32.83    -0.21
    35   1.2839    878.56    -0.15      32.86     0.32
    36   1.5271    805.28     0.04    -447.46     0.08
    37   2.1655  12703.93     0.07     -12.48     0.08
    38   2.1656  12700.14     0.05     -12.41     0.09
    39   2.3270   7930.72     0.23    -139.70    -0.02
    40   3.0748  23123.13    -0.04    -195.32    -0.05
    41   3.0774  23074.81    -0.02    -191.99    -0.10
    42   3.0775  23072.63     0.07    -191.77    -0.07
    43   4.0578  31394.88    -0.05    -325.34    -0.01

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.

14UH228    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.174    48.189    48.160
ecceobj         0.334     0.334     0.333
incobj          3.110     3.110     3.110
qmin           31.393    31.423    31.354
qmax           65.250    65.154    65.068
amean          47.797    47.797    47.797
amin           47.238    47.217    47.188
amax           48.569    48.526    48.533
emean           0.324     0.325     0.321
emin            0.306     0.306     0.296
emax            0.344     0.343     0.343
imean           5.665     5.551     6.186
imin            4.241     4.132     4.033
imax            7.177     7.058     8.183
excite_mean     0.339     0.339     0.340
fracstop        1.000     1.000     1.000
cjmean          3.001     3.001     3.001

libcent 0        74.7      74.5      76.5
libamp  0        32.4      31.2      35.9
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       216.4     216.4     213.6
kozaiamp        179.9     180.0     179.9