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 Fri Dec  3 02:12:23 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     67 observations of     67
# Arc:  10.12y
# First observation: 2010/05/10
#  Last observation: 2020/06/24
# Chi-squared of fit:    55.44 DOF:    128 RMS:  0.16
# Min/Max residuals:    -0.42    0.59
# Exact a, adot, b, bdot, g, gdot:
  1.903628E-05  3.837548E-02  5.208128E-06  1.149942E-02  3.302650E-02 -7.704518E-03
# Covariance matrix:
  2.5428E-13 -8.5206E-14  3.9179E-14 -1.9270E-14 -5.3450E-14 -1.5261E-13
 -8.5206E-14  3.5437E-14 -1.8811E-14  9.2939E-15  1.9834E-14  7.3756E-14
  3.9179E-14 -1.8811E-14  1.2300E-13 -2.4332E-14 -1.0194E-14 -4.4260E-14
 -1.9270E-14  9.2939E-15 -2.4332E-14  6.6054E-15  4.6662E-15  2.1947E-14
 -5.3450E-14  1.9834E-14 -1.0194E-14  4.6662E-15  6.1985E-14  3.5717E-14
 -1.5261E-13  7.3756E-14 -4.4260E-14  2.1947E-14  3.5717E-14  1.7445E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.524307 -141.559235   -0.189211   -0.078375   -0.989820  2455326.897516
# Heliocentric elements and errors
Epoch:              2455326.5000  =  2010/05/10
Mean Anomaly:          329.26148 +/-     0.003
Argument of Peri:       37.85403 +/-     0.004
Long of Asc Node:      233.05833 +/-     0.000
Inclination:            17.27434 +/-     0.000
Eccentricity:         0.27406283 +/-    0.0000
Semi-Major Axis:     39.41359151 +/-    0.0015
Time of Perihelion: 2463043.4882 +/-       4.8
Perihelion:          28.61179124 +/-    0.0013
Aphelion:            50.21539178 +/-    0.0021
Period (y)              247.4442 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -24.29761325 +/-    0.0002
Ecliptic Y          -19.53391612 +/-    0.0001
Ecliptic Z           -2.38824910 +/-    0.0000
Ecliptic XDOT         0.00241935 +/-    0.0000
Ecliptic YDOT        -0.00213667 +/-    0.0000
Ecliptic ZDOT         0.00100065 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.26752933 +/-    0.0002
Geocenter to KBO     30.27886338 +/-    0.0002
# Hcoef:  7.47

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.

2010 05  10.39675  14 18 07.320  -18 35 47.61  22.5G 14GJ54    F51  C~2r7S      
2010 05  11.38665  14 18 01.453  -18 35 10.36  22.0G 14GJ54    F51  C~2r7S      
2011 04  13.44670  14 30 38.513  -18 56 52.21  21.7G 14GJ54    F51  C~2r7S      
2011 04  13.45703  14 30 38.427  -18 56 51.89  22.1G 14GJ54    F51  C~2r7S      
2011 04  14.49402  14 30 32.352  -18 56 18.94  21.9G 14GJ54    F51  C~2r7S      
2011 04  14.50564  14 30 32.251  -18 56 18.63  22.1G 14GJ54    F51  C~2r7S      
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 03  12.61181  15 03 03.387  -19 11 02.25  22.3G 14GJ54    F51  C~2r7S      
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  04.30393  14 55 29.088  -18 30 34.45  22.4G 14GJ54    F51  C~2r7S      
2014 06  20.33391  14 54 11.223  -18 22 31.02  22.2G 14GJ54    F51  C~2r7S      
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 03  30.54643  15 12 15.169  -19 01 49.70  22.6G 14GJ54    F51  C~2r7S      
2015 05  24.42896  15 06 51.817  -18 34 09.53  22.2G 14GJ54    F51  C~2r7S      
2015 06  08.42336  15 05 24.064  -18 26 11.70  22.5G 14GJ54    F51  C~2r7S      
2015 06  11.32672  15 05 08.648  -18 24 44.08  22.2G 14GJ54    F51  C~2r7S      
2015 06  11.33793  15 05 08.585  -18 24 44.23  23.2G 14GJ54    F51  C~2r7S      
2015 06  11.34914  15 05 08.538  -18 24 43.46  22.1G 14GJ54    F51  C~2r7S      
2015 07  18.32047  15 03 00.429  -18 10 30.89  23.2G 14GJ54    F51  C~2r7S      
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      
2016 03  07.61254  15 23 43.340  -19 02 36.79  23.1G 14GJ54    F51  C~2r7S      
2016 03  07.62355  15 23 43.318  -19 02 36.71  22.2G 14GJ54    F51  C~2r7S      
2016 04  01.59216  15 22 27.194  -18 55 08.88  21.5G 14GJ54    F51  C~2r7S      
2016 05  07.45067  15 19 03.062  -18 38 07.29  21.9G 14GJ54    F51  C~2r7S      
2016 05  07.46178  15 19 02.994  -18 38 06.92  22.4G 14GJ54    F51  C~2r7S      
2016 05  07.47286  15 19 02.915  -18 38 06.36  21.8G 14GJ54    F51  C~2r7S      
2017 02  05.65732  15 33 39.731  -18 57 04.37  22.2G 14GJ54    F51  C~2r7S      
2017 03  27.60138  15 33 18.936  -18 49 14.73  22.2G 14GJ54    F51  C~2r7S      
2017 03  27.61128  15 33 18.908  -18 49 14.44  21.9G 14GJ54    F51  C~2r7S      
2017 03  27.62130  15 33 18.869  -18 49 14.06  23.0G 14GJ54    F51  C~2r7S      
2017 03  27.63133  15 33 18.837  -18 49 13.99  22.8G 14GJ54    F51  C~2r7S      
2017 04  26.49051  15 30 48.850  -18 36 30.45  22.3G 14GJ54    F51  C~2r7S      
2017 04  26.50172  15 30 48.788  -18 36 30.06  22.3G 14GJ54    F51  C~2r7S      
2017 04  26.51293  15 30 48.707  -18 36 29.71  22.1G 14GJ54    F51  C~2r7S      
2017 04  26.52414  15 30 48.670  -18 36 29.53  22.9G 14GJ54    F51  C~2r7S      
2017 05  19.41408  15 28 21.948  -18 24 50.45  20.8G 14GJ54    F51  C~2r7S      
2017 05  19.42547  15 28 21.856  -18 24 49.87  22.4G 14GJ54    F51  C~2r7S      
2017 05  19.43685  15 28 21.783  -18 24 49.73  21.6G 14GJ54    F51  C~2r7S      
2017 05  19.44828  15 28 21.706  -18 24 49.21  22.0G 14GJ54    F51  C~2r7S      
2017 09  04.25106  15 24 26.104  -17 58 39.98  21.7G 14GJ54    F51  C~2r7S      
2020 06  24.34855  15 56 55.409  -17 34 53.49  22.2w 14GJ54    F51  C~3yMg      
2020 06  24.35996  15 56 55.362  -17 34 53.49  22.1w 14GJ54    F51  C~3yMg      
2020 06  24.37140  15 56 55.307  -17 34 53.28  22.3w 14GJ54    F51  C~3yMg      

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    -0.11       0.00     0.10
     2   0.0027      0.00     0.18       0.00    -0.38
     3   0.9255      0.00     0.13       0.00     0.12
     4   0.9256      0.00    -0.23       0.00     0.11
     5   0.9284      0.00     0.22       0.00    -0.20
     6   0.9284      0.00    -0.24       0.00    -0.26
     7   1.7255      0.00     0.08       0.00     0.06
     8   1.7255      0.00     0.17       0.00    -0.03
     9   1.7255      0.00     0.09       0.00     0.09
    10   1.7255      0.00     0.19       0.00    -0.09
    11   1.9330      0.00     0.08       0.00     0.05
    12   1.9331      0.00    -0.11       0.00     0.12
    13   1.9331      0.00    -0.01       0.00    -0.17
    14   1.9331      0.00    -0.16       0.00     0.07
    15   3.8391      0.00    -0.03       0.00     0.10
    16   3.9044      0.00    -0.04       0.00     0.13
    17   3.9044      0.00     0.11       0.00     0.09
    18   3.9045      0.00    -0.09       0.00     0.29
    19   3.9045      0.00     0.19       0.00     0.17
    20   4.0354      0.00    -0.21       0.00    -0.11
    21   4.0354      0.00    -0.00       0.00    -0.07
    22   4.0354      0.00    -0.09       0.00     0.20
    23   4.0355      0.00     0.10       0.00     0.11
    24   4.0682      0.00    -0.23       0.00    -0.16
    25   4.1121      0.00     0.17       0.00     0.12
    26   4.1393      0.00    -0.12       0.00     0.25
    27   4.1393      0.00     0.14       0.00     0.02
    28   4.1394      0.00    -0.18       0.00     0.06
    29   4.1394      0.00    -0.01       0.00    -0.07
    30   4.8875      0.00    -0.03       0.00     0.18
    31   5.0377      0.00     0.19       0.00     0.04
    32   5.0788      0.00    -0.40       0.00    -0.13
    33   5.0867      0.00     0.03       0.00     0.06
    34   5.0868      0.00    -0.02       0.00    -0.42
    35   5.0868      0.00     0.17       0.00     0.01
    36   5.1880      0.00    -0.01       0.00     0.31
    37   5.1906      0.00     0.04       0.00    -0.20
    38   5.1906      0.00    -0.17       0.00     0.17
    39   5.1907      0.00     0.10       0.00     0.09
    40   5.1907      0.00     0.15       0.00     0.01
    41   5.1907      0.00    -0.17       0.00     0.02
    42   5.1907      0.00     0.02       0.00    -0.01
    43   5.1907      0.00    -0.06       0.00    -0.12
    44   5.1907      0.00     0.10       0.00    -0.23
    45   5.8267      0.00    -0.10       0.00     0.00
    46   5.8268      0.00    -0.16       0.00    -0.05
    47   5.8951      0.00    -0.07       0.00    -0.20
    48   5.9933      0.00    -0.01       0.00    -0.13
    49   5.9933      0.00     0.07       0.00    -0.12
    50   5.9934      0.00    -0.02       0.00     0.09
    51   6.7440      0.00     0.08       0.00     0.13
    52   6.8808      0.00    -0.07       0.00    -0.10
    53   6.8808      0.00     0.07       0.00    -0.01
    54   6.8808      0.00     0.05       0.00     0.16
    55   6.8809      0.00     0.14       0.00     0.02
    56   6.9626      0.00    -0.26       0.00    -0.17
    57   6.9626      0.00    -0.14       0.00    -0.11
    58   6.9627      0.00    -0.31       0.00    -0.09
    59   6.9627      0.00     0.18       0.00    -0.24
    60   7.0254      0.00     0.23       0.00    -0.14
    61   7.0254      0.00    -0.01       0.00     0.08
    62   7.0254      0.00     0.03       0.00    -0.13
    63   7.0255      0.00     0.01       0.00     0.04
    64   7.3206      0.00     0.48       0.00     0.59
    65  10.1244      0.00    -0.24       0.00     0.14
    66  10.1245      0.00    -0.01       0.00    -0.09
    67  10.1245      0.00     0.11       0.00    -0.11

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        39.193    39.192    39.193
ecceobj         0.271     0.271     0.271
incobj         17.305    17.305    17.305
qmin           26.511    26.511    26.512
qmax           52.852    52.854    52.851
amean          39.453    39.453    39.453
amin           39.062    39.062    39.062
amax           39.934    39.933    39.932
emean           0.268     0.269     0.268
emin            0.176     0.176     0.176
emax            0.327     0.327     0.327
imean          18.575    18.574    18.575
imin           15.899    15.898    15.900
imax           22.053    22.052    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       179.3     178.9     179.2
libamp  0        40.5      40.3      40.3
libcent 1       181.2     181.6     180.9
libamp  1       168.4     167.7     169.0
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        91.0      91.0      91.0
kozaiamp         56.2      56.2      56.2