Orbit Fit and Astrometric record for 14UG229

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: 14UG229   
# Created Mon Dec  6 02:12:48 2021
# Orbit generated from Bernstein formalism
# Fitting     16 observations of     16
# Arc:   1.94y
# First observation: 2013/10/30
#  Last observation: 2015/10/09
Preliminary a, adot, b, bdot, g, gdot:
   0.000998   0.081010   0.000126   0.017393   0.056400   0.000000
# Chi-squared of fit:     8.14 DOF:     26 RMS:  0.13
# Min/Max residuals:    -0.33    0.34
# Exact a, adot, b, bdot, g, gdot:
  2.347463E-05  8.548449E-02  4.348620E-06  1.824722E-02  5.547087E-02  2.850914E-02
# Covariance matrix:
  3.6171E-13 -4.9123E-13  1.2317E-14 -5.5918E-14 -6.2849E-14 -1.7648E-12
 -4.9123E-13  1.7644E-12 -7.1634E-14  3.3602E-13  1.2442E-12  1.0511E-11
  1.2317E-14 -7.1634E-14  2.9909E-13 -2.2950E-13 -6.4679E-14 -4.9622E-13
 -5.5918E-14  3.3602E-13 -2.2950E-13  3.0487E-13  3.2255E-13  2.3438E-12
 -6.2849E-14  1.2442E-12 -6.4679E-14  3.2255E-13  2.6780E-12  9.9295E-12
 -1.7648E-12  1.0511E-11 -4.9622E-13  2.3438E-12  9.9295E-12  7.3182E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.947644   25.062620   -0.201814    0.033107   -0.970782  2456595.896878
# Heliocentric elements and errors
Epoch:              2456590.5000  =  2013/10/25
Mean Anomaly:           25.82680 +/-     0.006
Argument of Peri:      303.94985 +/-     0.013
Long of Asc Node:       17.12865 +/-     0.000
Inclination:            12.24326 +/-     0.000
Eccentricity:         0.44092678 +/-    0.0001
Semi-Major Axis:     28.01344022 +/-    0.0042
Time of Perihelion: 2452705.2744 +/-       0.4
Perihelion:          15.66156436 +/-    0.0034
Aphelion:            40.36531608 +/-    0.0065
Period (y)              148.2716 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           17.11428972 +/-    0.0005
Ecliptic Y            8.22924813 +/-    0.0002
Ecliptic Z            0.61275406 +/-    0.0000
Ecliptic XDOT        -0.00054730 +/-    0.0000
Ecliptic YDOT         0.00440310 +/-    0.0000
Ecliptic ZDOT         0.00094806 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   18.99986592 +/-    0.0004
Geocenter to KBO     18.02747870 +/-    0.0005
# Hcoef: 11.63

The following table shows the complete astrometric record for 14UG229. 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 (14UG229) followed by the observatory code and reference code for the source of the astrometry.

2013 10  30.39610  01 29 58.873  +11 30 45.95  24.1r 14UG229   568  C~2SDj      
2013 11  01.33687  01 29 40.732  +11 29 18.32  24.4r 14UG229   568  C~2SDj      
2013 11  01.47502  01 29 39.420  +11 29 12.31  24.6r 14UG229   568  C~2SDj      
2013 11  05.44310  01 29 03.127  +11 26 16.47  24.1r 14UG229   568  C~2SDj      
2014 10  22.30668  01 48 01.640  +14 16 38.78  24.5r 14UG229   568  C~2SDj      
2014 10  22.35220  01 48 01.177  +14 16 36.92  24.4r 14UG229   568  C~2SDj      
2014 10  22.40142  01 48 00.693  +14 16 34.83  24.3r 14UG229   568  C~2SDj      
2014 10  23.49660  01 47 50.103  +14 15 47.43  24.6r 14UG229   568  C~2SDj      
2014 10  25.51256  01 47 30.570  +14 14 19.94  24.4r 14UG229   568  C~2SDj      
2014 11  20.37921  01 43 37.380  +13 55 53.10  24.2r 14UG229   568  C~2SDj      
2014 11  21.28243  01 43 30.293  +13 55 17.43  24.5r 14UG229   568  C~2SDj      
2014 11  21.43749  01 43 29.050  +13 55 11.63  24.6r 14UG229   568  C~2SDj      
2015 02  19.26866  01 43 36.758  +13 57 01.77  24.4r 14UG229   568  C~2SDj      
2015 10  09.42350  02 06 10.841  +16 50 58.18  24.9w 14UG229   568  C~2SDj      
2015 10  09.46604  02 06 10.448  +16 50 56.87  24.7w 14UG229   568  C~2SDj      
2015 10  09.49960  02 06 10.133  +16 50 55.63  24.9w 14UG229   568  C~2SDj      

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     0.18       0.00     0.18
     2   0.0053   -280.19    -0.08      16.60    -0.09
     3   0.0057   -300.33    -0.05      18.11     0.11
     4   0.0166   -861.14    -0.08      51.09    -0.04
     5   0.9772  18401.41     0.02    3599.71    -0.07
     6   0.9773  18394.40    -0.15    3600.33     0.09
     7   0.9774  18387.02    -0.12    3600.84     0.10
     8   0.9804  18224.95     0.34    3610.48    -0.16
     9   0.9859  17926.03     0.03    3628.28     0.13
    10   1.0568  14338.81    -0.16    3790.88    -0.00
    11   1.0592  14229.14    -0.03    3794.17    -0.33
    12   1.0597  14210.08     0.04    3795.17    -0.09
    13   1.3056  14354.88     0.10    3858.48    -0.07
    14   1.9412  36698.19     0.00    6990.00     0.04
    15   1.9413  36692.25     0.03    6990.63     0.14
    16   1.9414  36687.42    -0.08    6990.95     0.05

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.

14UG229    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        28.070    28.099    28.041
ecceobj         0.443     0.444     0.442
incobj         12.230    12.230    12.230
qmin           14.930    15.089    14.749
qmax           41.664    41.317    41.700
amean          27.940    27.831    27.916
amin           27.331    26.794    27.404
amax           28.475    28.341    28.324
emean           0.450     0.442     0.453
emin            0.432     0.425     0.432
emax            0.467     0.460     0.473
imean          11.350    12.633    11.494
imin           10.266    11.227    10.269
imax           13.209    15.282    14.131
excite_mean     0.491     0.494     0.495
fracstop        0.017     0.022     0.018
cjmean          2.762     2.763     2.759

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       189.9     154.1     168.4
kozaiamp        179.4     179.4     179.6