Orbit Fit and Astrometric record for 14GK54

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: 14GK54    
# Created Sun Oct 21 01:09:28 2018
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:   3.10y
# First observation: 2012/04/15
#  Last observation: 2015/05/22
Preliminary a, adot, b, bdot, g, gdot:
  -0.000217   0.047832  -0.000097   0.020460   0.037633   0.000000
# Chi-squared of fit:     9.54 DOF:   34 RMS:  0.12
# Min/Max residuals:    -0.26    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.996792E-05  4.725157E-02  8.836618E-06  2.018655E-02  3.776363E-02 -6.057008E-03
# Covariance matrix:
  3.5897E-13 -2.7409E-13  1.6112E-14 -6.2367E-14 -9.4297E-14 -1.0464E-12
 -2.7409E-13  7.6491E-13 -7.6369E-14  2.9440E-13  6.0526E-13  4.9543E-12
  1.6112E-14 -7.6369E-14  3.3280E-13 -1.6158E-13 -6.4189E-14 -5.4277E-13
 -6.2367E-14  2.9440E-13 -1.6158E-13  1.9068E-13  2.4567E-13  2.0935E-12
 -9.4297E-14  6.0526E-13 -6.4189E-14  2.4567E-13  7.3787E-13  4.1563E-12
 -1.0464E-12  4.9543E-12 -5.4277E-13  2.0935E-12  4.1563E-12  3.5216E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -6.902827 -140.532358    0.239613   -0.117533   -0.970672  2456032.927766
# Heliocentric elements and errors
Epoch:              2456030.5000  =  2012/04/13
Mean Anomaly:          345.43103 +/-     0.010
Argument of Peri:       12.92336 +/-     0.022
Long of Asc Node:      234.12656 +/-     0.000
Inclination:            24.05179 +/-     0.000
Eccentricity:         0.32338991 +/-    0.0001
Semi-Major Axis:     39.28779970 +/-    0.0053
Time of Perihelion: 2459670.5845 +/-       2.5
Perihelion:          26.58252169 +/-    0.0055
Aphelion:            51.99307770 +/-    0.0082
Period (y)              246.2605 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -21.19839807 +/-    0.0005
Ecliptic Y          -17.14530537 +/-    0.0004
Ecliptic Z           -3.18231756 +/-    0.0001
Ecliptic XDOT         0.00237334 +/-    0.0000
Ecliptic YDOT        -0.00247561 +/-    0.0000
Ecliptic ZDOT         0.00150579 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   27.44923901 +/-    0.0004
Geocenter to KBO     26.48050488 +/-    0.0006
# Hcoef:  7.98

The following table shows the complete astrometric record for 14GK54. 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 (14GK54) followed by the observatory code and reference code for the source of the astrometry.

2012 04  15.42700  14 18 53.866  -21 10 43.68  22.3w 14GK54    F51  C~1vXO      
2012 04  15.44093  14 18 53.771  -21 10 42.97  22.4w 14GK54    F51  C~1vXO      
2012 04  15.45478  14 18 53.697  -21 10 42.51  22.5w 14GK54    F51  C~1vXO      
2012 04  15.46871  14 18 53.570  -21 10 41.75  22.2w 14GK54    F51  C~1vXO      
2014 04  05.49499  14 45 22.374  -20 45 22.36  22.4w 14GK54    F51  C~1vXO      
2014 04  05.50690  14 45 22.295  -20 45 22.21  22.5w 14GK54    F51  C~1vXO      
2014 04  05.51879  14 45 22.220  -20 45 21.87  22.1w 14GK54    F51  C~1vXO      
2014 05  23.32122  14 40 00.362  -20 12 29.61  22.4w 14GK54    F51  C~1vXO      
2014 05  23.33248  14 40 00.282  -20 12 29.10  22.5w 14GK54    F51  C~1vXO      
2014 05  23.34376  14 40 00.216  -20 12 28.58  22.4w 14GK54    F51  C~1vXO      
2014 05  23.35505  14 40 00.139  -20 12 28.07  22.1w 14GK54    F51  C~1vXO      
2014 06  30.27420  14 36 54.599  -19 46 41.90  22.5w 14GK54    F51  C~1vXO      
2014 06  30.29797  14 36 54.510  -19 46 41.15  22.4w 14GK54    F51  C~1vXO      
2014 06  30.30985  14 36 54.475  -19 46 40.77  22.5w 14GK54    F51  C~1vXO      
2015 02  24.63458  15 00 25.762  -20 37 18.44  22.5w 14GK54    F51  C~1vXO      
2015 02  24.64556  15 00 25.742  -20 37 18.56  22.6w 14GK54    F51  C~1vXO      
2015 02  24.65104  15 00 25.753  -20 37 18.42  22.4w 14GK54    F51  C~1vXO      
2015 05  19.98851  14 53 12.64   -19 54 54.4         14GK54    W84  C~2i4l      
2015 05  20.99505  14 53 05.78   -19 54 10.8   22.9V 14GK54    W84  C~2i4l      
2015 05  22.00117  14 52 58.94   -19 53 27.3         14GK54    W84  C~2i4l      

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    -0.04       0.00    -0.08
  2   0.0000     -1.49    -0.07       0.23     0.06
  3   0.0001     -2.62     0.24       0.33     0.06
  4   0.0001     -4.54    -0.23       0.46     0.10
  5   1.9714  20764.68    -0.03    8368.10     0.24
  6   1.9715  20763.56    -0.05    8367.92    -0.01
  7   1.9715  20762.44    -0.08    8367.94    -0.08
  8   2.1024  15817.69     0.06    8916.33    -0.10
  9   2.1024  15816.45    -0.01    8916.48    -0.12
 10   2.1024  15815.40     0.10    8916.69    -0.07
 11   2.1025  15814.21     0.07    8916.86    -0.07
 12   2.2063  12838.63     0.23    9603.07    -0.02
 13   2.2064  12837.20    -0.01    9603.41    -0.15
 14   2.2064  12836.61     0.00    9603.62    -0.17
 15   2.8616  33040.98     0.10   12451.35     0.12
 16   2.8617  33040.73    -0.01   12451.16    -0.11
 17   2.8617  33040.85     0.18   12451.34     0.05
 18   3.0926  26337.69    -0.14   13214.00     0.19
 19   3.0953  26230.76    -0.05   13228.59     0.16
 20   3.0981  26124.13    -0.26   13243.15    -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.

14GK54    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.190    39.201    39.179
ecceobj         0.322     0.322     0.322
incobj         24.055    24.055    24.055
qmin           24.360    24.363    24.320
qmax           55.142    55.096    55.176
amean          39.453    39.453    39.452
amin           39.061    39.048    39.069
amax           39.965    39.961    39.961
emean           0.351     0.350     0.350
emin            0.319     0.318     0.317
emax            0.382     0.381     0.382
imean          23.962    23.976    23.957
imin           22.612    22.581    22.497
imax           25.162    25.181    25.164
excite_mean     0.537     0.537     0.537
fracstop        1.000     1.000     1.000
cjmean          2.722     2.722     2.722

libcent 0       179.4     181.2     179.1
libamp  0        46.8      45.9      40.0
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       165.9     166.4     167.4
kozaiamp        180.0     179.9     180.0