Orbit Fit and Astrometric record for 13FA28

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: 13FA28    
# Created Thu Oct 19 01:38:13 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   27
# Arc:  15.03y
# First observation: 2000/03/03
#  Last observation: 2015/03/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.002587   0.021484   0.000031  -0.000248   0.023543   0.000000
# Chi-squared of fit:    27.00 DOF:   44 RMS:  0.18
# Min/Max residuals:    -0.53    0.41
# Exact a, adot, b, bdot, g, gdot:
  1.471182E-05  2.059635E-02  9.665019E-07 -2.361806E-04  2.243608E-02 -4.353175E-04
# Covariance matrix:
  4.7212E-13 -1.0765E-13 -1.8192E-15  9.5191E-16 -7.1090E-14 -2.5315E-13
 -1.0765E-13  4.5733E-14  8.5571E-16 -4.8524E-16  5.6492E-14  1.3052E-13
 -1.8192E-15  8.5571E-16  3.0948E-13 -2.5010E-14 -2.9735E-16  2.7297E-15
  9.5191E-16 -4.8524E-16 -2.5010E-14  2.4641E-15 -4.4107E-16 -1.4838E-15
 -7.1090E-14  5.6492E-14 -2.9735E-16 -4.4107E-16  3.5534E-13  1.4077E-13
 -2.5315E-13  1.3052E-13  2.7297E-15 -1.4838E-15  1.4077E-13  3.9678E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.413393 -173.901839    0.383854   -0.022929   -0.919985  2451606.941976
# Heliocentric elements and errors
Epoch:              2451600.5000  =  2000/02/26
Mean Anomaly:          220.37710 +/-     0.075
Argument of Peri:       27.09818 +/-     0.068
Long of Asc Node:      301.26161 +/-     0.005
Inclination:             1.53619 +/-     0.000
Eccentricity:         0.04405602 +/-    0.0001
Semi-Major Axis:     43.97605195 +/-    0.0041
Time of Perihelion: 2492912.5667 +/-      21.5
Perihelion:          42.03864202 +/-    0.0046
Aphelion:            45.91346188 +/-    0.0049
Period (y)              291.6302 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -45.25434614 +/-    0.0012
Ecliptic Y           -4.44693130 +/-    0.0001
Ecliptic Z           -1.09931022 +/-    0.0000
Ecliptic XDOT         0.00031461 +/-    0.0000
Ecliptic YDOT        -0.00248648 +/-    0.0000
Ecliptic ZDOT        -0.00002739 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.48559690 +/-    0.0012
Geocenter to KBO     44.57105691 +/-    0.0012
# Hcoef:  5.94

The following table shows the complete astrometric record for 13FA28. 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 (13FA28) followed by the observatory code and reference code for the source of the astrometry.

2000 03  03.441233 12 20 09.03   -03 43 10.7   22.1V 13FA28    645  C~1pQU      
2000 03  03.442062 12 20 09.03   -03 43 10.7   21.6V 13FA28    645  C~1pQU      
2000 03  03.444550 12 20 09.03   -03 43 10.7   23.0V 13FA28    645  C~1pQU      
2006 01  31.470719 12 47 41.70   -06 42 49.0   22.7V 13FA28    645  C~1pQU      
2006 01  31.471548 12 47 41.70   -06 42 49.0   22.2V 13FA28    645  C~1pQU      
2006 01  31.474036 12 47 41.69   -06 42 48.9   23.7V 13FA28    645  C~1pQU      
2006 05  01.280849 12 42 23.66   -06 10 24.1   22.7V 13FA28    645  C~1pQU      
2006 05  01.281678 12 42 23.66   -06 10 24.1   21.9V 13FA28    645  C~1pQU      
2006 05  01.284166 12 42 23.64   -06 10 24.0   23.5V 13FA28    645  C~1pQU      
2013 03  16.25367  13 16 37.139  -09 45 36.46        13FA28    807  C~14Qh      
2013 03  16.25367  13 16 37.12   -09 45 36.9   22.6r 13FA28    W84  C~2J9e      
2013 03  16.30082  13 16 36.955  -09 45 35.54  22.1r 13FA28    807  C~14Qh      
2013 03  16.30082  13 16 36.93   -09 45 35.8         13FA28    W84  C~2J9e      
2013 03  16.35904  13 16 36.728  -09 45 34.00        13FA28    807  C~14Qh      
2013 03  16.35905  13 16 36.71   -09 45 34.6         13FA28    W84  C~2J9e      
2013 04  16.26314  13 14 28.17   -09 32 57.4   22.6V 13FA28    W84  C~1UFp      
2013 04  16.26722  13 14 28.15   -09 32 57.4         13FA28    W84  C~1UFp      
2013 04  16.30402  13 14 27.99   -09 32 56.5         13FA28    W84  C~1UFp      
2013 04  16.30816  13 14 27.98   -09 32 56.3         13FA28    W84  C~1UFp      
2013 04  16.31253  13 14 27.95   -09 32 56.2         13FA28    W84  C~1UFp      
2013 04  16.31668  13 14 27.95   -09 32 56.1         13FA28    W84  C~1UFp      
2013 05  09.06799  13 12 56.466  -09 23 31.46  22.2r 13FA28    807  C~14Qh      
2013 05  10.12071  13 12 52.628  -09 23 07.23        13FA28    807  C~14Qh      
2014 05  01.26761  13 17 57.923  -09 54 12.13  22.0r 13FA28    304  C~14Qh      
2014 05  02.27997  13 17 53.866  -09 53 47.13        13FA28    304  C~14Qh      
2015 03  16.40848  13 25 41.79   -10 40 08.5   22.4R 13FA28    G37  C~1N7m      
2015 03  16.46245  13 25 41.56   -10 40 06.8         13FA28    G37  C~1N7m      

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    -0.23
  2   0.0000      0.00     0.01       0.00    -0.23
  3   0.0000      0.00     0.17       0.00    -0.23
  4   5.9138  27087.95     0.05    -246.14     0.21
  5   5.9138  27087.95     0.07    -246.14     0.21
  6   5.9138  27087.77    -0.04    -246.11     0.25
  7   6.1597  21891.74    -0.13    -289.98     0.22
  8   6.1597  21891.74    -0.08    -289.98     0.22
  9   6.1597  21891.43    -0.25    -290.01     0.19
 10  13.0344  56264.36     0.01    -665.42    -0.26
 11  13.0344  56264.46     0.12    -664.89     0.27
 12  13.0345  56261.12    -0.12    -665.43    -0.23
 13  13.0345  56261.38     0.15    -665.04     0.16
 14  13.0347  56257.42     0.02    -664.84     0.41
 15  13.0347  56257.39    -0.00    -665.52    -0.27
 16  13.1193  54064.98    -0.02    -664.92     0.02
 17  13.1193  54064.68    -0.01    -665.03    -0.10
 18  13.1194  54061.98    -0.01    -665.07    -0.15
 19  13.1194  54061.75     0.07    -664.94    -0.02
 20  13.1194  54061.27    -0.09    -665.01    -0.10
 21  13.1194  54061.23     0.18    -664.92    -0.00
 22  13.1817  52496.92     0.22    -642.12    -0.18
 23  13.1846  52431.19     0.17    -640.69    -0.18
 24  14.1597  57663.63 (   1.01)   -705.64 (  -0.11)
 25  14.1625  57593.61 (   0.68)   -704.42 (  -0.06)
 26  15.0334  65704.24     0.10    -773.59    -0.19
 27  15.0336  65700.08    -0.53    -773.22     0.24

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.

13FA28    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.964    43.976    43.952
ecceobj         0.044     0.044     0.045
incobj          1.536     1.536     1.536
qmin           41.645    41.652    41.637
qmax           47.074    47.073    47.077
amean          44.249    44.261    44.237
amin           43.903    43.925    43.891
amax           44.609    44.624    44.592
emean           0.041     0.041     0.041
emin            0.025     0.026     0.026
emax            0.055     0.055     0.056
imean           3.218     3.218     3.218
imin            2.579     2.580     2.575
imax            3.728     3.725     3.730
excite_mean     0.070     0.069     0.070
fracstop        1.000     1.000     1.000
cjmean          3.099     3.099     3.098

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       181.9     182.1     181.8
kozaiamp        180.0     180.0     180.0