Orbit Fit and Astrometric record for 14UL229

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: 14UL229   
# Created Wed Dec 25 02:10:03 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     21 observations of     21
# Arc:   5.17y
# First observation: 2014/08/23
#  Last observation: 2019/10/26
# Chi-squared of fit:     4.47 DOF:     36 RMS:  0.08
# Min/Max residuals:    -0.18    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.539822E-05  2.246700E-02 -8.840110E-07 -7.137124E-04  2.363347E-02  2.684328E-03
# Covariance matrix:
  2.2329E-13  2.7492E-14 -8.4155E-16 -1.2865E-15  1.9946E-13  3.8256E-13
  2.7492E-14  4.1935E-13  2.0185E-15 -1.3561E-14  2.5561E-13  4.0935E-12
 -8.4155E-16  2.0185E-15  9.2834E-14 -2.6678E-14 -1.6935E-16  2.2953E-14
 -1.2865E-15 -1.3561E-14 -2.6678E-14  3.0946E-14 -8.1140E-15 -1.4366E-13
  1.9946E-13  2.5561E-13 -1.6935E-16 -8.1140E-15  3.8650E-13  2.4416E-12
  3.8256E-13  4.0935E-12  2.2953E-14 -1.4366E-13  2.4416E-12  4.3374E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.896587   26.695802    0.846249    0.018582   -0.558238  2456893.041668
# Heliocentric elements and errors
Epoch:              2456892.5000  =  2014/08/23
Mean Anomaly:           87.56078 +/-     0.065
Argument of Peri:       34.74300 +/-     0.052
Long of Asc Node:      252.15221 +/-     0.007
Inclination:             2.57574 +/-     0.000
Eccentricity:         0.09689765 +/-    0.0003
Semi-Major Axis:     42.65407938 +/-    0.0043
Time of Perihelion: 2432144.1408 +/-      18.7
Perihelion:          38.52099917 +/-    0.0125
Aphelion:            46.78715959 +/-    0.0128
Period (y)              278.5794 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.65842238 +/-    0.0010
Ecliptic Y           18.49574389 +/-    0.0005
Ecliptic Z            1.40036096 +/-    0.0000
Ecliptic XDOT        -0.00089403 +/-    0.0000
Ecliptic YDOT         0.00246181 +/-    0.0000
Ecliptic ZDOT        -0.00007223 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.87798827 +/-    0.0009
Geocenter to KBO     42.31282272 +/-    0.0011
# Hcoef:  7.94

The following table shows the complete astrometric record for 14UL229. 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 (14UL229) followed by the observatory code and reference code for the source of the astrometry.

2014 08  23.54089  01 36 15.932  +12 03 43.10  24.6r 14UL229   568  C~2SDj      
2014 08  23.58776  01 36 15.833  +12 03 42.65  24.3r 14UL229   568  C~2SDj      
2014 08  27.43321  01 36 06.820  +12 02 58.40  24.1r 14UL229   568  C~2SDk      
2014 08  27.52904  01 36 06.586  +12 02 57.35  24.3r 14UL229   568  C~2SDk      
2014 09  18.36363  01 34 56.707  +11 56 49.87  24.1r 14UL229   568  C~2SDk      
2014 09  18.40832  01 34 56.541  +11 56 48.86  24.4r 14UL229   568  C~2SDk      
2014 09  23.44649  01 34 36.701  +11 54 59.96  24.5r 14UL229   568  C~2SDk      
2014 10  22.40934  01 32 28.934  +11 42 47.49  24.0r 14UL229   568  C~2SDk      
2014 10  22.44880  01 32 28.748  +11 42 46.28  24.4r 14UL229   568  C~2SDk      
2014 10  22.48819  01 32 28.567  +11 42 45.27  24.1r 14UL229   568  C~2SDk      
2014 10  25.26507  01 32 15.968  +11 41 30.42  24.2r 14UL229   568  C~2SDk      
2014 11  19.21279  01 30 31.014  +11 30 46.88  24.1r 14UL229   568  C~2SDk      
2014 11  19.34560  01 30 30.522  +11 30 43.70  24.4r 14UL229   568  C~2SDk      
2014 11  21.36159  01 30 23.137  +11 29 56.64  24.3r 14UL229   568  C~2SDk      
2015 02  18.23136  01 30 16.690  +11 24 50.77  24.2r 14UL229   568  C~2SDk      
2015 10  09.44415  01 38 29.135  +12 14 37.72  24.0w 14UL229   568  C~2SDk      
2015 10  09.48680  01 38 28.937  +12 14 36.62  24.2w 14UL229   568  C~2SDk      
2015 12  07.44916  01 34 31.055  +11 50 36.16  24.4w 14UL229   568  C~2SDk      
2017 01  31.22024  01 39 04.716  +12 11 13.45  24.6w 14UL229   568  C~2SDk      
2019 10  26.261690 01 57 08.405  +13 46 58.16  23.7G 14UL229   G37  C~3coM      
2019 10  26.353910 01 57 07.978  +13 46 55.41        14UL229   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    -0.10       0.00     0.05
     2   0.0001      0.00     0.02       0.00     0.10
     3   0.0107      0.00    -0.09       0.00    -0.07
     4   0.0109      0.00     0.08       0.00     0.05
     5   0.0707      0.00    -0.10       0.00     0.01
     6   0.0708      0.00     0.01       0.00    -0.07
     7   0.0846      0.00    -0.04       0.00     0.03
     8   0.1639      0.00     0.12       0.00     0.08
     9   0.1640      0.00     0.08       0.00    -0.07
    10   0.1641      0.00     0.10       0.00    -0.01
    11   0.1717      0.00     0.02       0.00    -0.01
    12   0.2400      0.00    -0.11       0.00     0.03
    13   0.2404      0.00     0.07       0.00    -0.03
    14   0.2459      0.00     0.07       0.00    -0.02
    15   0.4892      0.00    -0.12       0.00     0.05
    16   1.1277      0.00     0.09       0.00    -0.02
    17   1.1278      0.00     0.04       0.00    -0.04
    18   1.2893      0.00    -0.13       0.00    -0.03
    19   2.4413      0.00     0.10       0.00    -0.06
    20   5.1738      0.00    -0.04       0.00     0.23
    21   5.1740      0.00     0.02       0.00    -0.18

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.

14UL229    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.008    43.008    43.008
ecceobj         0.100     0.100     0.100
incobj          2.575     2.575     2.575
qmin           37.252    37.209    37.199
qmax           48.545    48.512    48.450
amean          42.732    42.732    42.732
amin           42.386    42.380    42.372
amax           43.100    43.106    43.108
emean           0.098     0.098     0.098
emin            0.071     0.070     0.070
emax            0.126     0.126     0.125
imean           5.449     5.449     5.449
imin            3.968     3.968     3.968
imax            7.046     7.052     7.047
excite_mean     0.137     0.137     0.137
fracstop        1.000     1.000     1.000
cjmean          3.064     3.064     3.064

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       179.9     180.1     179.9
kozaiamp        180.0     180.0     180.0