Orbit Fit and Astrometric record for 14GL54

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: 14GL54    
# Created Thu Dec 14 02:38:01 2017
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   23
# Arc:   3.21y
# First observation: 2012/04/27
#  Last observation: 2015/07/12
Preliminary a, adot, b, bdot, g, gdot:
   0.000079   0.031953  -0.000043  -0.009351   0.027909   0.000000
# Chi-squared of fit:     6.08 DOF:   40 RMS:  0.09
# Min/Max residuals:    -0.18    0.17
# Exact a, adot, b, bdot, g, gdot:
  1.845980E-05  3.193813E-02 -6.027594E-06 -9.393492E-03  2.768213E-02 -1.551170E-03
# Covariance matrix:
  1.7655E-13 -1.3244E-13 -6.7187E-15  2.6474E-14 -9.3460E-15 -8.8268E-13
 -1.3244E-13  7.5852E-13  7.5632E-14 -2.9964E-13  1.3094E-13  1.0027E-11
 -6.7187E-15  7.5632E-14  1.8028E-13 -1.0503E-13 -8.0950E-15  1.1322E-12
  2.6474E-14 -2.9964E-13 -1.0503E-13  1.7995E-13  3.3478E-15 -4.3965E-12
 -9.3460E-15  1.3094E-13 -8.0950E-15  3.3478E-15  4.4326E-13  5.4530E-13
 -8.8268E-13  1.0027E-11  1.1322E-12 -4.3965E-12  5.4530E-13  1.4509E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   26.033323 -130.154700    0.215778    0.433001   -0.886563  2456045.064606
# Heliocentric elements and errors
Epoch:              2456040.5000  =  2012/04/23
Mean Anomaly:          355.26572 +/-     0.035
Argument of Peri:      131.26264 +/-     0.079
Long of Asc Node:      105.16406 +/-     0.001
Inclination:            29.85437 +/-     0.000
Eccentricity:         0.35696732 +/-    0.0001
Semi-Major Axis:     57.29709472 +/-    0.0093
Time of Perihelion: 2458123.7852 +/-      15.3
Perihelion:          36.84390411 +/-    0.0079
Aphelion:            77.75028534 +/-    0.0137
Period (y)              433.7177 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -21.72943990 +/-    0.0005
Ecliptic Y          -25.42238686 +/-    0.0006
Ecliptic Z           15.85462509 +/-    0.0004
Ecliptic XDOT         0.00223523 +/-    0.0000
Ecliptic YDOT        -0.00223964 +/-    0.0000
Ecliptic ZDOT        -0.00090201 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.01128813 +/-    0.0005
Geocenter to KBO     36.12438665 +/-    0.0009
# Hcoef:  6.26

The following table shows the complete astrometric record for 14GL54. 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 (14GL54) followed by the observatory code and reference code for the source of the astrometry.

2012 04  27.56384  15 36 58.357  +07 26 26.57  21.7r 14GL54    F51  C~1vXO      
2012 04  27.57427  15 36 58.315  +07 26 26.70  21.8r 14GL54    F51  C~1vXO      
2012 04  27.58665  15 36 58.243  +07 26 26.94  21.2i 14GL54    F51  C~1vXO      
2012 04  27.59791  15 36 58.192  +07 26 27.36  21.5i 14GL54    F51  C~1vXO      
2012 05  14.35762  15 35 32.050  +07 31 41.85  21.7w 14GL54    F51  C~1vXO      
2012 05  14.37021  15 35 31.987  +07 31 41.94  22.0w 14GL54    F51  C~1vXO      
2012 05  14.38282  15 35 31.925  +07 31 42.20  21.8w 14GL54    F51  C~1vXO      
2012 05  14.39550  15 35 31.859  +07 31 42.31  22.0w 14GL54    F51  C~1vXO      
2014 04  08.49980  15 51 28.119  +05 17 00.43  22.2w 14GL54    F51  C~1vXO      
2014 04  08.51245  15 51 28.073  +05 17 00.82  22.0w 14GL54    F51  C~1vXO      
2014 04  08.52516  15 51 28.039  +05 17 01.16  22.2w 14GL54    F51  C~1vXO      
2014 04  08.53795  15 51 27.977  +05 17 01.64  21.8w 14GL54    F51  C~1vXO      
2014 05  10.38803  15 49 02.406  +05 30 28.68  21.5i 14GL54    F51  C~1vXO      
2014 05  10.40006  15 49 02.344  +05 30 28.81  21.3i 14GL54    F51  C~1vXO      
2014 05  10.41212  15 49 02.280  +05 30 29.25  21.5i 14GL54    F51  C~1vXO      
2014 05  28.33397  15 47 27.948  +05 33 34.30  21.8w 14GL54    F51  C~1vXO      
2014 05  28.34619  15 47 27.866  +05 33 34.57  21.7w 14GL54    F51  C~1vXO      
2014 05  28.35835  15 47 27.820  +05 33 34.58  21.6w 14GL54    F51  C~1vXO      
2014 05  28.37050  15 47 27.744  +05 33 34.52  21.7w 14GL54    F51  C~1vXO      
2015 07  12.30507  15 50 44.742  +04 23 49.56  21.9w 14GL54    F51  C~1vXO      
2015 07  12.31756  15 50 44.695  +04 23 49.29  21.9w 14GL54    F51  C~1vXO      
2015 07  12.33022  15 50 44.664  +04 23 48.82  21.7w 14GL54    F51  C~1vXO      
2015 07  12.34290  15 50 44.636  +04 23 48.49  21.7w 14GL54    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    -0.04       0.00     0.14
  2   0.0000     -0.64     0.13      -0.04     0.06
  3   0.0001     -1.73     0.00      -0.08    -0.04
  4   0.0001     -2.57     0.04       0.13     0.13
  5   0.0460  -1321.47    -0.14     -26.96    -0.09
  6   0.0460  -1322.40    -0.05     -27.11    -0.14
  7   0.0460  -1323.36     0.00     -27.10    -0.03
  8   0.0461  -1324.33     0.05     -27.24    -0.07
  9   1.9464  14574.30    -0.07   -4101.29     0.11
 10   1.9465  14573.53    -0.05   -4101.10     0.10
 11   1.9465  14572.95     0.17   -4100.90     0.08
 12   1.9465  14571.93    -0.06   -4100.69     0.09
 13   2.0337  12251.55    -0.02   -3896.47    -0.12
 14   2.0338  12250.62     0.02   -3896.59    -0.18
 15   2.0338  12249.58    -0.05   -3896.42     0.05
 16   2.0829  10837.75     0.14   -4089.44    -0.10
 17   2.0829  10836.49    -0.16   -4089.50     0.04
 18   2.0829  10835.82     0.12   -4089.67     0.08
 19   2.0830  10834.74    -0.02   -4090.03    -0.07
 20   3.2053  14799.36    -0.01   -7360.89    -0.02
 21   3.2053  14798.75    -0.15   -7361.34     0.02
 22   3.2054  14798.43    -0.00   -7361.92    -0.05
 23   3.2054  14798.11     0.15   -7362.35     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.

14GL54    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        57.064    57.093    57.035
ecceobj         0.355     0.355     0.354
incobj         29.845    29.845    29.845
qmin           35.793    35.789    35.785
qmax           80.464    80.491    80.359
amean          57.613    57.638    57.583
amin           56.989    57.005    56.978
amax           58.438    58.433    58.392
emean           0.357     0.357     0.357
emin            0.339     0.339     0.339
emax            0.378     0.378     0.377
imean          28.334    28.332    28.340
imin           27.727    27.721    27.737
imax           29.026    29.026    29.013
excite_mean     0.594     0.594     0.594
fracstop        1.000     1.000     1.000
cjmean          2.798     2.798     2.798

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       185.9     187.2     184.8
kozaiamp        179.9     180.0     180.0