Orbit Fit and Astrometric record for 14GJ54

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: 14GJ54    
# Created Mon Oct 23 01:38:24 2017
# Orbit generated from Bernstein formalism
# Fitting   28 observations of   28
# Arc:   3.47y
# First observation: 2012/01/30
#  Last observation: 2015/07/19
Preliminary a, adot, b, bdot, g, gdot:
   0.000225   0.039926   0.000066   0.012127   0.034020   0.000000
# Chi-squared of fit:    13.11 DOF:   50 RMS:  0.12
# Min/Max residuals:    -0.22    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.855469E-05  3.817547E-02  5.576966E-06  1.165998E-02  3.231354E-02 -5.672155E-03
# Covariance matrix:
  1.9095E-13 -8.2230E-14  9.5304E-15 -2.3762E-14  4.0641E-14 -5.8530E-13
 -8.2230E-14  4.7752E-13 -4.7433E-14  1.6609E-13  3.2590E-13  4.1790E-12
  9.5304E-15 -4.7433E-14  1.7857E-13 -8.3532E-14 -1.3063E-14 -5.8554E-13
 -2.3762E-14  1.6609E-13 -8.3532E-14  1.0385E-13  7.4426E-14  1.8590E-12
  4.0641E-14  3.2590E-13 -1.3063E-14  7.4426E-14  4.0654E-13  1.9102E-12
 -5.8530E-13  4.1790E-12 -5.8554E-13  1.8590E-12  1.9102E-12  4.6523E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.248155 -135.655504    0.983336    0.004085    0.071866  2455957.134566
# Heliocentric elements and errors
Epoch:              2455950.5000  =  2012/01/24
Mean Anomaly:          331.54545 +/-     0.015
Argument of Peri:       37.89879 +/-     0.032
Long of Asc Node:      233.04050 +/-     0.000
Inclination:            17.29659 +/-     0.000
Eccentricity:         0.27126246 +/-    0.0001
Semi-Major Axis:     39.28528177 +/-    0.0043
Time of Perihelion: 2463059.2380 +/-       3.6
Perihelion:          28.62865942 +/-    0.0065
Aphelion:            49.94190413 +/-    0.0078
Period (y)              246.2368 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.72837820 +/-    0.0004
Ecliptic Y          -20.84155370 +/-    0.0004
Ecliptic Z           -1.75329492 +/-    0.0000
Ecliptic XDOT         0.00255942 +/-    0.0000
Ecliptic YDOT        -0.00201252 +/-    0.0000
Ecliptic ZDOT         0.00101366 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.88727213 +/-    0.0004
Geocenter to KBO     30.94677941 +/-    0.0006
# Hcoef:  7.41

The following table shows the complete astrometric record for 14GJ54. 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 (14GJ54) followed by the observatory code and reference code for the source of the astrometry.

2012 01  30.63380  14 43 27.605  -19 14 34.32  22.4w 14GJ54    F51  C~1vXO      
2012 01  30.63846  14 43 27.620  -19 14 34.46  22.4w 14GJ54    F51  C~1vXO      
2012 01  30.64309  14 43 27.624  -19 14 34.38  22.6w 14GJ54    F51  C~1vXO      
2012 01  30.64772  14 43 27.640  -19 14 34.60  22.5w 14GJ54    F51  C~1vXO      
2012 04  15.42968  14 40 16.934  -18 58 12.40  22.1w 14GJ54    F51  C~1vXO      
2012 04  15.44357  14 40 16.837  -18 58 11.89  22.3w 14GJ54    F51  C~1vXO      
2012 04  15.45741  14 40 16.760  -18 58 11.74  21.9w 14GJ54    F51  C~1vXO      
2012 04  15.47135  14 40 16.666  -18 58 11.06  22.0w 14GJ54    F51  C~1vXO      
2014 04  05.48179  15 01 28.400  -19 02 45.60  22.2w 14GJ54    F51  C~1vXO      
2014 04  05.49368  15 01 28.348  -19 02 45.33  22.6w 14GJ54    F51  C~1vXO      
2014 04  05.50558  15 01 28.273  -19 02 44.82  22.4w 14GJ54    F51  C~1vXO      
2014 04  05.51748  15 01 28.229  -19 02 44.62  22.4w 14GJ54    F51  C~1vXO      
2014 05  23.31985  14 56 38.624  -18 37 13.31  22.6w 14GJ54    F51  C~1vXO      
2014 05  23.33112  14 56 38.568  -18 37 12.89  22.4w 14GJ54    F51  C~1vXO      
2014 05  23.34239  14 56 38.492  -18 37 12.23  22.4w 14GJ54    F51  C~1vXO      
2014 05  23.35367  14 56 38.435  -18 37 11.94  22.5w 14GJ54    F51  C~1vXO      
2014 06  30.27751  14 53 34.557  -18 18 15.03  22.4w 14GJ54    F51  C~1vXO      
2014 06  30.28938  14 53 34.535  -18 18 14.98  22.5w 14GJ54    F51  C~1vXO      
2014 06  30.30126  14 53 34.475  -18 18 14.66  22.4w 14GJ54    F51  C~1vXO      
2014 06  30.31315  14 53 34.447  -18 18 14.51  22.6w 14GJ54    F51  C~1vXO      
2015 07  19.27338  15 02 59.161  -18 10 17.49  22.5w 14GJ54    F51  C~1vXO      
2015 07  19.27402  15 02 59.146  -18 10 17.11  22.4w 14GJ54    F51  C~1vXO      
2015 07  19.28405  15 02 59.150  -18 10 17.04  22.6w 14GJ54    F51  C~1vXO      
2015 07  19.28489  15 02 59.152  -18 10 17.11  22.2w 14GJ54    F51  C~1vXO      
2015 07  19.29532  15 02 59.116  -18 10 16.95  22.3w 14GJ54    F51  C~1vXO      
2015 07  19.29596  15 02 59.128  -18 10 16.97  22.5w 14GJ54    F51  C~1vXO      
2015 07  19.30599  15 02 59.109  -18 10 16.94  22.2w 14GJ54    F51  C~1vXO      
2015 07  19.30694  15 02 59.118  -18 10 17.03  22.5w 14GJ54    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     0.03       0.00     0.03
  2   0.0000      0.24     0.13      -0.07    -0.04
  3   0.0000      0.27     0.02       0.02     0.06
  4   0.0000      0.56     0.17      -0.12    -0.08
  5   0.2075  -2873.23     0.06     115.48     0.02
  6   0.2076  -2874.69    -0.14     115.55     0.03
  7   0.2076  -2875.78     0.04     115.36    -0.22
  8   0.2076  -2877.26    -0.16     115.60    -0.03
  9   2.1789  14483.46    -0.11    5113.31     0.08
 10   2.1789  14482.67     0.04    5113.36     0.08
 11   2.1790  14481.50    -0.19    5113.56     0.22
 12   2.1790  14480.84     0.09    5113.58     0.19
 13   2.3099  10088.16    -0.15    5429.63    -0.19
 14   2.3099  10087.28     0.03    5429.81    -0.10
 15   2.3099  10086.05    -0.13    5430.13     0.14
 16   2.3100  10085.19     0.07    5430.18     0.11
 17   2.4138   7247.36    -0.14    5771.49     0.19
 18   2.4138   7247.04     0.16    5771.45     0.03
 19   2.4139   7246.13    -0.14    5771.51    -0.02
 20   2.4139   7245.70     0.05    5771.54    -0.10
 21   3.4651  14861.24     0.12    8507.93    -0.20
 22   3.4651  14860.93    -0.18    8508.24     0.10
 23   3.4652  14860.97     0.09    8508.32     0.10
 24   3.4652  14861.02     0.16    8508.26     0.03
 25   3.4652  14860.48    -0.14    8508.27    -0.04
 26   3.4652  14860.65     0.05    8508.30    -0.02
 27   3.4652  14860.38     0.01    8508.25    -0.15
 28   3.4652  14860.52     0.18    8508.20    -0.21

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.

14GJ54    quality flag:3

Type:           3:2E      3:2E      3:2E
Type:          6:4II     6:4II     6:4II

axisobj        39.191    39.200    39.182
ecceobj         0.271     0.271     0.271
incobj         17.305    17.305    17.305
qmin           26.512    26.529    26.497
qmax           52.855    52.789    52.898
amean          39.454    39.454    39.454
amin           39.064    39.068    39.082
amax           39.891    39.924    39.915
emean           0.269     0.268     0.269
emin            0.176     0.178     0.176
emax            0.327     0.326     0.328
imean          18.572    18.597    18.562
imin           15.894    15.925    15.872
imax           22.053    22.076    22.054
excite_mean     0.420     0.420     0.420
fracstop        1.000     1.000     1.000
cjmean          2.850     2.850     2.850

libcent 0       179.0     179.0     179.5
libamp  0        39.2      43.9      38.9
libcent 1       181.3     182.2     182.3
libamp  1       166.8     174.2     165.3
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        91.0      90.9      91.0
kozaiamp         56.2      56.4      56.2