Orbit Fit and Astrometric record for 14UA229

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: 14UA229   
# Created Sat Dec  4 02:12:52 2021
# Orbit generated from Bernstein formalism
# Fitting     14 observations of     14
# Arc:   2.94y
# First observation: 2014/09/23
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000655   0.064656  -0.000025   0.038768   0.046283   0.000000
# Chi-squared of fit:     9.12 DOF:     22 RMS:  0.14
# Min/Max residuals:    -0.37    0.32
# Exact a, adot, b, bdot, g, gdot:
  2.079103E-05  6.398998E-02  1.254248E-05  3.866737E-02  4.750450E-02 -1.493431E-03
# Covariance matrix:
  6.0695E-13 -4.1028E-13  1.4054E-14 -6.7168E-14  6.5280E-13 -6.8256E-13
 -4.1028E-13  1.1315E-12 -1.1552E-13  5.4275E-13 -1.3562E-13  4.8642E-12
  1.4054E-14 -1.1552E-13  1.7685E-13 -1.4789E-13 -2.6817E-14 -6.1119E-13
 -6.7168E-14  5.4275E-13 -1.4789E-13  4.3166E-13  1.2394E-13  2.8685E-12
  6.5280E-13 -1.3562E-13 -2.6817E-14  1.2394E-13  1.1164E-12  9.6537E-13
 -6.8256E-13  4.8642E-12 -6.1119E-13  2.8685E-12  9.6537E-13  2.5495E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.187644   30.805250    0.513187    0.033149   -0.864520  2456924.020338
# Heliocentric elements and errors
Epoch:              2456920.5000  =  2014/09/20
Mean Anomaly:          356.28015 +/-     0.006
Argument of Peri:       12.87444 +/-     0.015
Long of Asc Node:       26.00889 +/-     0.000
Inclination:            31.29118 +/-     0.000
Eccentricity:         0.37732091 +/-    0.0001
Semi-Major Axis:     35.08813071 +/-    0.0064
Time of Perihelion: 2457704.9436 +/-       1.3
Perihelion:          21.84864530 +/-    0.0053
Aphelion:            48.32761612 +/-    0.0095
Period (y)              207.8493 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           19.07075063 +/-    0.0004
Ecliptic Y           10.77662550 +/-    0.0002
Ecliptic Z            0.80381841 +/-    0.0000
Ecliptic XDOT        -0.00204029 +/-    0.0000
Ecliptic YDOT         0.00307545 +/-    0.0000
Ecliptic ZDOT         0.00222374 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   21.91974705 +/-    0.0004
Geocenter to KBO     21.05063668 +/-    0.0005
# Hcoef: 11.34

The following table shows the complete astrometric record for 14UA229. 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 (14UA229) followed by the observatory code and reference code for the source of the astrometry.

2014 09  23.51956  01 51 34.702  +13 48 10.78  24.6r 14UA229   568  C~2SDi      
2014 10  22.30273  01 47 26.218  +13 37 29.75  24.7r 14UA229   568  C~2SDi      
2014 10  22.34832  01 47 25.788  +13 37 28.59  24.6r 14UA229   568  C~2SDi      
2014 10  22.39209  01 47 25.377  +13 37 27.46  24.3r 14UA229   568  C~2SDi      
2014 10  23.49156  01 47 15.278  +13 36 57.48  24.4r 14UA229   568  C~2SDi      
2014 10  25.50750  01 46 56.889  +13 36 02.40  24.6r 14UA229   568  C~2SDi      
2014 11  20.22362  01 43 16.394  +13 24 41.65  25.0r 14UA229   568  C~2SDi      
2014 11  20.36407  01 43 15.305  +13 24 38.57  24.8r 14UA229   568  C~2SDi      
2015 02  19.25614  01 42 24.125  +13 43 14.16  24.9r 14UA229   568  C~2SDi      
2015 10  09.44000  02 00 32.002  +17 05 33.55  24.7w 14UA229   568  C~2SDi      
2015 10  09.48270  02 00 31.621  +17 05 32.73  24.8w 14UA229   568  C~2SDi      
2015 10  09.51194  02 00 31.357  +17 05 32.16  24.8w 14UA229   568  C~2SDi      
2017 08  25.55259  02 28 34.031  +23 33 29.27  25.4w 14UA229   568  C~2SDi      
2017 08  30.57505  02 28 19.162  +23 36 07.20  25.0w 14UA229   568  C~2SDi      

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     0.07
     2   0.0788  -3613.96     0.24     681.71    -0.15
     3   0.0789  -3620.23     0.16     682.85    -0.06
     4   0.0790  -3626.23     0.13     683.93     0.00
     5   0.0821  -3774.54    -0.37     708.32     0.04
     6   0.0876  -4044.77    -0.02     752.35    -0.05
     7   0.1580  -7293.85    -0.31    1268.62    -0.05
     8   0.1584  -7309.81    -0.16    1271.46     0.07
     9   0.4072  -7604.70     0.32    2582.02     0.23
    10   1.0429  11412.90    -0.06    8423.49    -0.01
    11   1.0430  11407.47    -0.01    8424.59    -0.04
    12   1.0431  11403.70    -0.02    8425.34    -0.05
    13   2.9214  42036.67    -0.01   23177.52    -0.02
    14   2.9351  41885.15     0.02   23395.27     0.04

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.

14UA229    quality flag:2

Type:       CENTAURR  CENTAURS  CENTAURS

axisobj        35.330    35.351    35.309
ecceobj         0.381     0.381     0.381
incobj         31.221    31.221    31.222
qmin           21.673    21.671    21.672
qmax           48.791    48.831    48.750
amean          34.701    34.287    34.789
amin           34.141    33.867    34.128
amax           35.330    35.351    35.451
emean           0.286     0.272     0.286
emin            0.161     0.170     0.173
emax            0.381     0.381     0.381
imean          33.264    33.108    32.817
imin           31.024    30.593    30.544
imax           35.910    35.768    35.965
excite_mean     0.622     0.613     0.615
fracstop        0.089     1.000     1.000
cjmean          2.571     2.595     2.594

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        34.2     178.4     178.9
kozaiamp         17.0     180.0     180.0