Orbit Fit and Astrometric record for 13EM149

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: 13EM149   
# Created Tue Oct 24 01:38:12 2017
# Orbit generated from Bernstein formalism
# Fitting   40 observations of   40
# Arc:   9.96y
# First observation: 2005/05/04
#  Last observation: 2015/04/21
Preliminary a, adot, b, bdot, g, gdot:
  -0.000124   0.023631  -0.000006   0.000883   0.024598   0.000000
# Chi-squared of fit:     7.13 DOF:   74 RMS:  0.07
# Min/Max residuals:    -0.24    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.529158E-05  2.354123E-02  5.503425E-07  8.763643E-04  2.388468E-02  2.806224E-04
# Covariance matrix:
  3.6683E-13 -8.1769E-14  5.4399E-16 -1.4998E-15 -3.8465E-14 -1.8995E-13
 -8.1769E-14  1.1376E-13 -1.4547E-15  4.0100E-15  9.4711E-14  5.0892E-13
  5.4399E-16 -1.4547E-15  3.5176E-13 -4.1518E-14 -1.3655E-15 -6.8517E-15
 -1.4998E-15  4.0100E-15 -4.1518E-14  5.5948E-15  3.7723E-15  1.8889E-14
 -3.8465E-14  9.4711E-14 -1.3655E-15  3.7723E-15  1.9485E-13  4.6517E-13
 -1.8995E-13  5.0892E-13 -6.8517E-15  1.8889E-14  4.6517E-13  2.3948E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.596847 -154.789127   -0.324373    0.026591   -0.950794  2453494.843703
# Heliocentric elements and errors
Epoch:              2453490.5000  =  2005/04/30
Mean Anomaly:           17.31717 +/-     0.055
Argument of Peri:       16.74960 +/-     0.063
Long of Asc Node:      169.23010 +/-     0.003
Inclination:             2.62887 +/-     0.000
Eccentricity:         0.06395453 +/-    0.0000
Semi-Major Axis:     45.58907336 +/-    0.0029
Time of Perihelion: 2448082.1598 +/-      17.1
Perihelion:          42.67344550 +/-    0.0034
Aphelion:            48.50470123 +/-    0.0037
Period (y)              307.8218 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -38.59148372 +/-    0.0007
Ecliptic Y          -18.52651286 +/-    0.0003
Ecliptic Z            1.16676512 +/-    0.0000
Ecliptic XDOT         0.00112347 +/-    0.0000
Ecliptic YDOT        -0.00246102 +/-    0.0000
Ecliptic ZDOT         0.00010137 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.82400770 +/-    0.0006
Geocenter to KBO     41.86784577 +/-    0.0008
# Hcoef:  6.80

The following table shows the complete astrometric record for 13EM149. 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 (13EM149) followed by the observatory code and reference code for the source of the astrometry.

2005 05  04.34296  13 35 48.23   -08 16 04.2   23.0r 13EM149   568  C~1XRT      
2005 05  04.37717  13 35 48.08   -08 16 03.3   23.2r 13EM149   568  C~1XRT      
2005 05  04.41844  13 35 47.91   -08 16 02.4   23.1r 13EM149   568  C~1XRT      
2005 05  05.38801  13 35 43.85   -08 15 39.1   23.2r 13EM149   568  C~1XRT      
2013 03  07.54156  14 21 05.364  -11 59 58.50  23.2r 13EM149   568  C~1XRT      
2013 03  07.59862  14 21 05.208  -11 59 57.53  22.9r 13EM149   568  C~1XRT      
2013 03  13.41329  14 20 49.24   -11 58 21.5   22.4R 13EM149   695  C~0uf3      
2013 03  13.48923  14 20 48.99   -11 58 20.2         13EM149   695  C~0uf3      
2013 03  14.48443  14 20 46.04   -11 58 02.5         13EM149   695  C~0uf3      
2013 04  04.54263  14 19 29.666  -11 50 52.03  22.8r 13EM149   568  C~1XRT      
2013 04  07.40318  14 19 17.738  -11 49 46.86  22.9r 13EM149   568  C~1XRT      
2013 04  07.44689  14 19 17.549  -11 49 45.98  22.9r 13EM149   568  C~1XRT      
2013 04  08.43552  14 19 13.361  -11 49 23.30  23.0r 13EM149   568  C~1XRT      
2013 04  08.48075  14 19 13.162  -11 49 22.24  22.9r 13EM149   568  C~1XRT      
2013 04  09.38210  14 19 09.315  -11 49 01.35  22.9r 13EM149   568  C~1XRT      
2013 04  09.42533  14 19 09.131  -11 49 00.40  23.0r 13EM149   568  C~1XRT      
2013 04  09.46848  14 19 08.934  -11 48 59.39  23.1r 13EM149   568  C~1XRT      
2013 05  11.47017  14 16 45.930  -11 36 33.07  22.8r 13EM149   568  C~1XRT      
2013 05  12.47149  14 16 41.560  -11 36 11.07  22.9r 13EM149   568  C~1XRT      
2013 06  12.36752  14 14 46.437  -11 26 51.99  23.1r 13EM149   568  C~1XRT      
2013 06  12.41250  14 14 46.306  -11 26 51.51  23.0r 13EM149   568  C~1XRT      
2013 07  04.32702  14 14 00.195  -11 23 37.34  23.1r 13EM149   568  C~1XRT      
2013 07  06.33482  14 13 57.843  -11 23 29.87  23.1r 13EM149   568  C~1XRT      
2013 08  05.26320  14 14 03.966  -11 25 14.21  23.2r 13EM149   568  C~1XRT      
2014 02  01.65794  14 26 50.112  -12 27 53.66  23.5r 13EM149   568  C~1XRT      
2014 02  03.57011  14 26 51.027  -12 27 51.37  23.2r 13EM149   568  C~1XRT      
2014 02  04.65008  14 26 51.376  -12 27 49.56  23.0r 13EM149   568  C~1XRT      
2014 02  04.65538  14 26 51.374  -12 27 49.58  23.1r 13EM149   568  C~1XRT      
2014 02  24.58174  14 26 38.680  -12 25 40.88  23.0r 13EM149   568  C~1XRT      
2014 02  25.55135  14 26 37.159  -12 25 30.27  23.0r 13EM149   568  C~1XRT      
2014 02  28.51276  14 26 32.021  -12 24 55.75  23.0r 13EM149   568  C~1XRT      
2014 03  28.45338  14 25 11.431  -12 17 04.39  23.0r 13EM149   568  C~1XRT      
2014 03  28.49795  14 25 11.256  -12 17 03.51  22.9r 13EM149   568  C~1XRT      
2014 04  05.41760  14 24 40.040  -12 14 13.71  22.9r 13EM149   568  C~1XRT      
2014 04  05.42769  14 24 40.002  -12 14 13.47  22.9r 13EM149   568  C~1XRT      
2014 05  22.41340  14 21 13.318  -11 56 38.59  22.9r 13EM149   568  C~1XRT      
2014 05  28.38556  14 20 49.601  -11 54 44.62  22.9r 13EM149   568  C~1XRT      
2014 07  18.29220  14 18 57.775  -11 46 57.37  23.1r 13EM149   568  C~1XRT      
2015 04  21.42104  14 28 45.860  -12 31 34.14  22.8r 13EM149   568  C~2KOF      
2015 04  21.48737  14 28 45.552  -12 31 32.57  22.7r 13EM149   568  C~2KOF      

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     0.06       0.00     0.01
  2   0.0001     -2.40    -0.02       0.03     0.06
  3   0.0002     -5.08     0.10      -0.05     0.01
  4   0.0029    -69.69    -0.14      -0.27     0.01
  5   7.8417  42881.64     0.12    1401.84    -0.11
  6   7.8419  42879.05    -0.01    1402.00    -0.07
  7   7.8578  42615.31     0.13    1415.14    -0.11
  8   7.8580  42611.26    -0.15    1415.15    -0.24
  9   7.8608  42562.56     0.20    1417.53     0.03
 10   7.9184  41312.65    -0.06    1451.53    -0.03
 11   7.9262  41118.37    -0.02    1454.71     0.14
 12   7.9264  41115.34     0.01    1454.62     0.02
 13   7.9291  41047.21     0.09    1455.53     0.01
 14   7.9292  41043.98     0.05    1455.56     0.02
 15   7.9317  40981.38    -0.02    1456.45     0.07
 16   7.9318  40978.41     0.06    1456.44     0.05
 17   7.9319  40975.22    -0.07    1456.43     0.02
 18   8.0195  38663.03     0.02    1457.67    -0.06
 19   8.0223  38592.78    -0.06    1456.85    -0.11
 20   8.1068  36751.75    -0.07    1413.96    -0.01
 21   8.1070  36749.71     0.01    1413.76    -0.12
 22   8.1670  36024.00    -0.02    1367.25     0.04
 23   8.1725  35987.85    -0.01    1362.54    -0.04
 24   8.2544  36111.40    -0.02    1293.67    -0.03
 25   8.7483  48466.75    -0.04    1485.50    -0.08
 26   8.7535  48479.34    -0.01    1492.22     0.15
 27   8.7565  48483.82     0.01    1495.70     0.03
 28   8.7565  48483.80    -0.03    1495.67    -0.01
 29   8.8111  48254.14    -0.04    1558.19     0.04
 30   8.8137  48228.28    -0.08    1561.01     0.08
 31   8.8218  48141.38    -0.06    1569.24     0.06
 32   8.8983  46804.03    -0.02    1629.19    -0.04
 33   8.8984  46801.18    -0.06    1629.18    -0.10
 34   8.9201  46288.39    -0.04    1639.50    -0.06
 35   8.9201  46287.75     0.02    1639.54    -0.02
 36   9.0488  42927.70    -0.02    1634.02     0.03
 37   9.0651  42545.78     0.03    1625.84    -0.01
 38   9.2045  40772.49     0.05    1518.02     0.14
 39   9.9633  50237.71     0.10    1839.41     0.09
 40   9.9634  50232.66     0.02    1839.42     0.12

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.

13EM149    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.987    44.996    44.979
ecceobj         0.052     0.052     0.052
incobj          2.640     2.640     2.640
qmin           42.041    42.022    42.033
qmax           48.817    48.825    48.792
amean          45.322    45.331    45.314
amin           44.955    44.975    44.962
amax           45.706    45.714    45.681
emean           0.055     0.055     0.055
emin            0.042     0.042     0.042
emax            0.069     0.069     0.068
imean           2.767     2.766     2.767
imin            2.284     2.284     2.285
imax            3.186     3.186     3.188
excite_mean     0.073     0.073     0.073
fracstop        1.000     1.000     1.000
cjmean          3.111     3.111     3.111

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       175.6     175.4     175.4
kozaiamp        180.0     180.0     180.0