Orbit Fit and Astrometric record for 14GD54

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: 14GD54    
# Created Tue Dec 12 02:38:04 2017
# Orbit generated from Bernstein formalism
# Fitting   39 observations of   40
# Arc:   3.06y
# First observation: 2012/02/27
#  Last observation: 2015/03/21
Preliminary a, adot, b, bdot, g, gdot:
  -0.000115   0.040113  -0.000002   0.001557   0.029519   0.000000
# Chi-squared of fit:    16.62 DOF:   72 RMS:  0.12
# Min/Max residuals:    -0.31    0.33
# Exact a, adot, b, bdot, g, gdot:
  2.136337E-05  3.996089E-02  5.768578E-07  1.555977E-03  2.953480E-02 -8.309113E-04
# Covariance matrix:
  1.8506E-13 -5.3058E-14  4.9938E-16 -1.8838E-16  8.1341E-14  3.4367E-14
 -5.3058E-14  4.9266E-13 -4.7660E-15  1.8433E-14  4.1331E-13  4.0196E-12
  4.9938E-16 -4.7660E-15  1.3919E-13 -5.6257E-14 -3.3572E-15 -4.1393E-14
 -1.8838E-16  1.8433E-14 -5.6257E-14  3.1642E-14  1.5970E-14  1.6040E-13
  8.1341E-14  4.1331E-13 -3.3572E-15  1.5970E-14  5.0470E-13  3.6120E-12
  3.4367E-14  4.0196E-12 -4.1393E-14  1.6040E-13  3.6120E-12  3.4992E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.334040 -168.696752    0.541259   -0.062865   -0.829544  2455984.978236
# Heliocentric elements and errors
Epoch:              2455980.5000  =  2012/02/23
Mean Anomaly:          358.95798 +/-     0.004
Argument of Peri:      302.52106 +/-     0.022
Long of Asc Node:      253.15580 +/-     0.003
Inclination:             4.75584 +/-     0.000
Eccentricity:         0.60801682 +/-    0.0001
Semi-Major Axis:     88.35023702 +/-    0.0202
Time of Perihelion: 2456858.4808 +/-       3.6
Perihelion:          34.63180672 +/-    0.0109
Aphelion:           142.06866731 +/-    0.0334
Period (y)              830.4620 +/-      0.29
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.02543915 +/-    0.0008
Ecliptic Y           -6.24874376 +/-    0.0002
Ecliptic Z           -2.55869465 +/-    0.0001
Ecliptic XDOT         0.00078596 +/-    0.0000
Ecliptic YDOT        -0.00361544 +/-    0.0000
Ecliptic ZDOT         0.00014974 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.68896404 +/-    0.0008
Geocenter to KBO     33.85836298 +/-    0.0008
# Hcoef:  6.56

The following table shows the complete astrometric record for 14GD54. 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 (14GD54) followed by the observatory code and reference code for the source of the astrometry.

2012 02  27.47747  12 34 42.902  -08 27 27.31  21.9w 14GD54    F51  C~1vXN      
2012 02  27.49226  12 34 42.837  -08 27 27.02  22.1w 14GD54    F51  C~1vXN      
2012 02  27.50704  12 34 42.777  -08 27 26.72  21.6w 14GD54    F51  C~1vXN      
2012 02  27.52179  12 34 42.717  -08 27 26.38  22.1w 14GD54    F51  C~1vXN      
2012 04  14.34248  12 30 55.124  -08 03 40.87  21.8w 14GD54    F51  C~1vXN      
2012 04  14.35734  12 30 55.044  -08 03 40.41  21.9w 14GD54    F51  C~1vXN      
2012 04  14.37217  12 30 54.977  -08 03 39.84  22.0w 14GD54    F51  C~1vXN      
2012 04  14.38700  12 30 54.900  -08 03 39.38  22.0w 14GD54    F51  C~1vXN      
2013 03  13.47040  12 42 17.948  -09 10 13.32  22.0w 14GD54    F51  C~1vXN      
2013 03  13.48464  12 42 17.858  -09 10 13.03  22.0w 14GD54    F51  C~1vXN      
2013 03  13.49886  12 42 17.791  -09 10 12.95  22.0w 14GD54    F51  C~1vXN      
2013 03  13.51312  12 42 17.737  -09 10 12.51  22.0w 14GD54    F51  C~1vXO      
2013 04  19.41515  12 39 13.148  -08 50 22.69  21.4i 14GD54    F51  C~1vXO      
2013 04  19.42741  12 39 13.116  -08 50 22.32  21.6i 14GD54    F51  C~1vXO      
2013 04  19.43946  12 39 13.034  -08 50 22.02  21.6r 14GD54    F51  C~1vXO      
2013 04  19.45036  12 39 13.003  -08 50 21.40  21.7r 14GD54    F51  C~1vXO      
2014 04  05.38232  12 49 09.782  -09 47 08.46  21.9w 14GD54    F51  C~1vXO      
2014 04  05.39353  12 49 09.727  -09 47 08.17  21.8w 14GD54    F51  C~1vXO      
2014 04  05.40476  12 49 09.663  -09 47 07.77  21.9w 14GD54    F51  C~1vXO      
2014 04  05.41598  12 49 09.612  -09 47 07.49  21.7w 14GD54    F51  C~1vXO      
2014 05  25.28585  12 45 38.720  -09 21 30.77  21.9w 14GD54    F51  C~1vXO      
2014 05  25.29793  12 45 38.695  -09 21 30.49  22.1w 14GD54    F51  C~1vXO      
2014 05  25.31003  12 45 38.662  -09 21 30.16  22.4w 14GD54    F51  C~1vXO      
2014 05  25.32212  12 45 38.631  -09 21 29.85  22.0w 14GD54    F51  C~1vXO      
2014 06  02.27027  12 45 20.582  -09 18 37.77  22.1w 14GD54    F51  C~1vXO      
2014 06  02.28238  12 45 20.546  -09 18 37.56  22.0w 14GD54    F51  C~1vXO      
2014 06  02.29447  12 45 20.514  -09 18 36.96  22.5w 14GD54    F51  C~1vXO      
2014 06  02.30658  12 45 20.504  -09 18 36.89  22.1w 14GD54    F51  C~1vXO      
2015 01  24.60311  13 02 06.261  -10 56 16.38  22.1w 14GD54    F51  C~1vXO      
2015 01  24.61533  13 02 06.263  -10 56 16.27  22.5w 14GD54    F51  C~1vXO      
2015 01  24.62749  13 02 06.253  -10 56 16.25  22.2w 14GD54    F51  C~1vXO      
2015 01  24.63970  13 02 06.245  -10 56 16.32  22.1w 14GD54    F51  C~1vXO      
2015 03  20.48581  12 59 20.144  -10 43 22.08  21.8w 14GD54    F51  C~1vXO      
2015 03  20.49638  12 59 20.100  -10 43 21.71  21.8w 14GD54    F51  C~1vXO      
2015 03  20.50699  12 59 20.052  -10 43 21.45  21.9w 14GD54    F51  C~1vXO      
2015 03  20.54366  12 59 19.866  -10 43 20.42  22.0w 14GD54    F51  C~1vXO      
2015 03  21.43630  12 59 15.516  -10 42 55.01  22.0w 14GD54    F51  C~1vXO      
2015 03  21.44685  12 59 15.459  -10 42 54.64  22.0w 14GD54    F51  C~1vXO      
2015 03  21.45738  12 59 15.415  -10 42 54.23  22.0w 14GD54    F51  C~1vXO      
2015 03  21.46791  12 59 15.359  -10 42 53.97  22.0w 14GD54    F51  C~1vXO      

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     0.01       0.00     0.05
  2   0.0000     -1.00    -0.01      -0.11     0.00
  3   0.0001     -1.94     0.04      -0.19    -0.01
  4   0.0001     -2.89     0.07      -0.23     0.01
  5   0.1283  -3670.08    -0.01     -26.95    -0.03
  6   0.1284  -3671.36    -0.08     -27.00    -0.11
  7   0.1284  -3672.50    -0.03     -26.87    -0.01
  8   0.1284  -3673.73    -0.06     -26.90    -0.07
  9   1.0404   7214.00 (   0.01)    283.93 (   0.55)
 10   1.0404   7212.66    -0.23     283.68     0.33
 11   1.0404   7211.71    -0.07     283.36     0.05
 12   1.0405   7210.80     0.12     283.46     0.18
 13   1.1415   4226.25    -0.10     310.32    -0.12
 14   1.1415   4225.67     0.29     310.47    -0.00
 15   1.1416   4224.43     0.01     310.27    -0.23
 16   1.1416   4223.76     0.21     310.67     0.13
 17   2.1024  13706.69     0.02     603.33     0.10
 18   2.1024  13705.82     0.10     603.28     0.05
 19   2.1025  13704.79     0.01     603.28     0.04
 20   2.1025  13703.98     0.15     603.25     0.01
 21   2.2390  10221.39    -0.12     815.49    -0.04
 22   2.2391  10220.94    -0.01     815.60     0.00
 23   2.2391  10220.36    -0.03     815.72     0.04
 24   2.2391  10219.82    -0.01     815.82     0.08
 25   2.2609   9906.11     0.08     870.92    -0.21
 26   2.2609   9905.53    -0.07     870.91    -0.30
 27   2.2610   9904.86    -0.31     871.28    -0.01
 28   2.2610   9904.70    -0.05     871.28    -0.08
 29   2.9079  25996.59    -0.16    1132.36    -0.12
 30   2.9080  25996.57    -0.09    1132.47     0.07
 31   2.9080  25996.43    -0.16    1132.44     0.12
 32   2.9080  25996.34    -0.15    1132.33     0.09
 33   3.0582  23401.03    -0.00     925.22    -0.05
 34   3.0582  23400.28     0.09     925.32     0.06
 35   3.0583  23399.52     0.17     925.29     0.05
 36   3.0584  23396.55     0.12     925.21     0.01
 37   3.0608  23326.71     0.09     924.48    -0.11
 38   3.0608  23325.78     0.01     924.51    -0.07
 39   3.0609  23325.01     0.09     924.64     0.08
 40   3.0609  23324.14     0.06     924.57     0.02

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.

14GD54    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        87.960    88.009    87.912
ecceobj         0.606     0.606     0.606
incobj          4.753     4.753     4.753
qmin           33.819    33.869    33.983
qmax          155.306   153.977   158.089
amean          89.198    88.865    90.748
amin           86.027    86.067    87.577
amax           95.127    94.363    96.588
emean           0.610     0.608     0.614
emin            0.592     0.592     0.598
emax            0.635     0.632     0.637
imean           6.689     6.546     7.470
imin            5.872     5.911     6.096
imax            7.775     7.594     8.607
excite_mean     0.621     0.619     0.628
fracstop        1.000     1.000     1.000
cjmean          3.047     3.048     3.047

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       170.4     165.5     165.9
kozaiamp        180.0     180.0     180.0