Orbit Fit and Astrometric record for 14GA54

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: 14GA54    
# Created Sat Oct 21 01:38:22 2017
# Orbit generated from Bernstein formalism
# Fitting   40 observations of   40
# Arc:   3.06y
# First observation: 2012/06/13
#  Last observation: 2015/07/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000653   0.038498   0.000097  -0.003318   0.031436   0.000000
# Chi-squared of fit:    17.74 DOF:   74 RMS:  0.12
# Min/Max residuals:    -0.31    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.943659E-05  3.771175E-02 -1.741203E-06 -3.243940E-03  3.159869E-02 -5.641393E-03
# Covariance matrix:
  3.3919E-13 -3.0585E-13 -1.7162E-14  2.1499E-14 -1.3952E-13 -1.7046E-12
 -3.0585E-13  4.5723E-13  2.4770E-14 -3.9198E-14  1.3702E-13  3.1784E-12
 -1.7162E-14  2.4770E-14  1.6642E-13 -7.1127E-14  1.2946E-14  1.8046E-13
  2.1499E-14 -3.9198E-14 -7.1127E-14  4.0555E-14 -1.1862E-14 -2.9768E-13
 -1.3952E-13  1.3702E-13  1.2946E-14 -1.1862E-14  1.3953E-13  9.0288E-13
 -1.7046E-12  3.1784E-12  1.8046E-13 -2.9768E-13  9.0288E-13  2.4220E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   15.330074 -122.812366   -0.433835    0.243420   -0.888099  2456091.832676
# Heliocentric elements and errors
Epoch:              2456090.5000  =  2012/06/12
Mean Anomaly:          334.84972 +/-     0.016
Argument of Peri:      149.88498 +/-     0.030
Long of Asc Node:      128.55402 +/-     0.001
Inclination:            15.75745 +/-     0.000
Eccentricity:         0.24279143 +/-    0.0001
Semi-Major Axis:     40.89612103 +/-    0.0027
Time of Perihelion: 2462764.1277 +/-       4.3
Perihelion:          30.96689334 +/-    0.0044
Aphelion:            50.82534871 +/-    0.0051
Period (y)              261.5359 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.67035648 +/-    0.0002
Ecliptic Y          -26.65863014 +/-    0.0003
Ecliptic Z            8.36678106 +/-    0.0001
Ecliptic XDOT         0.00295614 +/-    0.0000
Ecliptic YDOT        -0.00143362 +/-    0.0000
Ecliptic ZDOT        -0.00040019 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.53592431 +/-    0.0003
Geocenter to KBO     31.64688491 +/-    0.0004
# Hcoef:  7.05

The following table shows the complete astrometric record for 14GA54. 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 (14GA54) followed by the observatory code and reference code for the source of the astrometry.

2012 06  13.33191  15 53 31.207  -04 34 48.46  22.1w 14GA54    F51  C~1vXN      
2012 06  13.34665  15 53 31.145  -04 34 48.29  22.5w 14GA54    F51  C~1vXN      
2012 06  13.36137  15 53 31.046  -04 34 48.47  22.3w 14GA54    F51  C~1vXN      
2012 06  13.37611  15 53 30.994  -04 34 48.22  22.3w 14GA54    F51  C~1vXN      
2013 02  14.62659  16 08 26.844  -05 57 56.24  22.3w 14GA54    F51  C~1vXN      
2013 02  14.63120  16 08 26.856  -05 57 56.13  22.3w 14GA54    F51  C~1vXN      
2013 02  14.63581  16 08 26.861  -05 57 56.14  22.4w 14GA54    F51  C~1vXN      
2013 02  14.64041  16 08 26.874  -05 57 56.20  22.2w 14GA54    F51  C~1vXN      
2013 05  12.44511  16 04 58.969  -05 20 15.33  22.2w 14GA54    F51  C~1vXN      
2013 05  12.45837  16 04 58.885  -05 20 15.19  22.2w 14GA54    F51  C~1vXN      
2013 05  12.47159  16 04 58.808  -05 20 14.88  22.0w 14GA54    F51  C~1vXN      
2013 05  12.48482  16 04 58.734  -05 20 14.63  22.1w 14GA54    F51  C~1vXN      
2014 04  05.56588  16 16 23.026  -06 14 34.73  22.7w 14GA54    F51  C~1vXN      
2014 04  05.57815  16 16 22.999  -06 14 34.20  22.4w 14GA54    F51  C~1vXN      
2014 04  05.59043  16 16 22.944  -06 14 34.03  22.3w 14GA54    F51  C~1vXN      
2014 04  05.60275  16 16 22.887  -06 14 33.60  22.5w 14GA54    F51  C~1vXN      
2014 05  07.44458  16 13 57.647  -06 00 52.46  21.9w 14GA54    F51  C~1vXN      
2014 05  07.45680  16 13 57.582  -06 00 52.26  22.0w 14GA54    F51  C~1vXN      
2014 05  07.46901  16 13 57.502  -06 00 51.99  22.1w 14GA54    F51  C~1vXN      
2014 05  07.48124  16 13 57.426  -06 00 51.68  22.0w 14GA54    F51  C~1vXN      
2014 06  02.35817  16 11 25.273  -05 53 54.00  22.0w 14GA54    F51  C~1vXN      
2014 06  02.36940  16 11 25.199  -05 53 53.81  22.1w 14GA54    F51  C~1vXN      
2014 06  02.38064  16 11 25.129  -05 53 53.75  22.2w 14GA54    F51  C~1vXN      
2014 06  02.39191  16 11 25.056  -05 53 53.78  22.1w 14GA54    F51  C~1vXN      
2014 07  29.30872  16 07 14.324  -05 59 52.06  22.5w 14GA54    F51  C~1vXN      
2014 07  29.32082  16 07 14.280  -05 59 52.22  22.5w 14GA54    F51  C~1vXN      
2014 07  29.33289  16 07 14.248  -05 59 52.54  22.3w 14GA54    F51  C~1vXN      
2015 03  28.58733  16 25 15.345  -06 56 28.30  22.4w 14GA54    F51  C~1vXN      
2015 03  28.59843  16 25 15.311  -06 56 28.02  22.1w 14GA54    F51  C~1vXN      
2015 03  28.60948  16 25 15.288  -06 56 27.67  22.3w 14GA54    F51  C~1vXN      
2015 05  19.42887  16 21 25.212  -06 35 49.17  22.2w 14GA54    F51  C~1vXN      
2015 05  19.45018  16 21 25.051  -06 35 48.65  22.1w 14GA54    F51  C~1vXN      
2015 05  19.46092  16 21 24.999  -06 35 48.72  22.3w 14GA54    F51  C~1vXN      
2015 07  06.29235  16 16 58.090  -06 32 23.72  22.6w 14GA54    F51  C~1vXN      
2015 07  06.31319  16 16 58.006  -06 32 23.92  22.3w 14GA54    F51  C~1vXN      
2015 07  06.32362  16 16 57.961  -06 32 24.40  22.2w 14GA54    F51  C~1vXN      
2015 07  07.27230  16 16 53.789  -06 32 33.02  22.4w 14GA54    F51  C~1vXN      
2015 07  07.28296  16 16 53.749  -06 32 33.05  22.3w 14GA54    F51  C~1vXN      
2015 07  07.29364  16 16 53.704  -06 32 33.06  22.0w 14GA54    F51  C~1vXN      
2015 07  07.30434  16 16 53.660  -06 32 33.23  22.2w 14GA54    F51  C~1vXN      

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    -0.12       0.00     0.02
  2   0.0000     -0.94     0.13      -0.03     0.20
  3   0.0001     -2.35    -0.10      -0.53    -0.08
  4   0.0001     -3.16     0.27      -0.45     0.21
  5   0.6743  14156.31    -0.02   -2020.71     0.06
  6   0.6743  14156.46    -0.01   -2020.56     0.09
  7   0.6743  14156.53    -0.08   -2020.56    -0.03
  8   0.6744  14156.74    -0.02   -2020.57    -0.16
  9   0.9120  10632.69    -0.08    -462.67     0.02
 10   0.9121  10631.43    -0.14    -462.80    -0.12
 11   0.9121  10630.24    -0.13    -462.74    -0.07
 12   0.9121  10629.10    -0.07    -462.73    -0.07
 13   1.8104  21364.33     0.07   -1515.45    -0.11
 14   1.8104  21363.82     0.24   -1515.01     0.11
 15   1.8104  21362.97     0.07   -1515.02    -0.11
 16   1.8105  21362.04    -0.18   -1514.77    -0.07
 17   1.8976  19050.46     0.08   -1158.81     0.00
 18   1.8977  19049.46     0.16   -1158.82    -0.05
 19   1.8977  19048.22     0.00   -1158.80    -0.07
 20   1.8977  19047.04    -0.10   -1158.74    -0.05
 21   1.9686  16722.49     0.22   -1223.74    -0.01
 22   1.9686  16721.37     0.11   -1223.79     0.05
 23   1.9686  16720.33     0.09   -1223.95    -0.01
 24   1.9687  16719.26     0.05   -1224.20    -0.16
 25   2.1245  13118.63     0.14   -2362.22     0.03
 26   2.1245  13118.02    -0.16   -2362.51     0.08
 27   2.1246  13117.62    -0.25   -2362.93     0.00
 28   2.7878  29772.13     0.07   -2362.09    -0.04
 29   2.7879  29771.56    -0.06   -2361.92    -0.08
 30   2.7879  29771.15    -0.04   -2361.64    -0.03
 31   2.9298  26096.88     0.20   -1839.72     0.06
 32   2.9298  26094.38    -0.31   -1839.70     0.13
 33   2.9299  26093.63    -0.07   -1839.93    -0.08
 34   3.0608  22105.43    -0.13   -2458.90     0.19
 35   3.0609  22104.23     0.03   -2459.36     0.21
 36   3.0609  22103.67     0.14   -2459.97    -0.16
 37   3.0635  22043.95    -0.10   -2481.33    -0.08
 38   3.0635  22043.36    -0.00   -2481.49     0.01
 39   3.0636  22042.70     0.02   -2481.63     0.11
 40   3.0636  22042.09     0.09   -2481.94     0.06

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.

14GA54    quality flag:2

Type:         8:5EEE  CENTAURR  CENTAURR

axisobj        40.787    40.793    40.781
ecceobj         0.242     0.242     0.242
incobj         15.757    15.757    15.757
qmin           30.385    28.687    29.510
qmax           52.523    58.094    59.193
amean          41.190    41.210    41.915
amin           40.696    40.322    40.709
amax           41.749    44.369    45.228
emean           0.224     0.247     0.262
emin            0.143     0.225     0.234
emax            0.262     0.313     0.327
imean          15.453    14.521    13.396
imin           13.495    12.174    10.616
imax           18.173    15.437    14.328
excite_mean     0.350     0.353     0.351
fracstop        1.000     0.531     0.196
cjmean          2.927     2.924     2.937

libcent 0       175.8    -180.0    -180.0
libamp  0       125.0    -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       182.5     189.4     204.4
kozaiamp        180.0     179.8     179.7