Orbit Fit and Astrometric record for 05GX186

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: 05GX186   
# Created Sun Oct 22 01:37:36 2017
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   23
# Arc:  12.06y
# First observation: 2001/02/20
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.001917   0.023236  -0.000165   0.001520   0.025154   0.000000
# Chi-squared of fit:    15.69 DOF:   40 RMS:  0.15
# Min/Max residuals:    -0.32    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.530688E-05  2.245226E-02  1.864343E-06  1.467573E-03  2.349366E-02 -2.283502E-04
# Covariance matrix:
  4.8063E-13 -1.2777E-13  1.5604E-14 -6.8755E-15  1.1060E-14 -3.2518E-13
 -1.2777E-13  5.9409E-14 -8.3124E-15  3.7144E-15  8.0757E-14  1.7656E-13
  1.5604E-14 -8.3124E-15  2.3437E-13 -2.5110E-14 -1.1299E-14 -2.6256E-14
 -6.8755E-15  3.7144E-15 -2.5110E-14  3.7657E-15  5.3221E-15  1.1734E-14
  1.1060E-14  8.0757E-14 -1.1299E-14  5.3221E-15  5.6782E-13  2.5759E-13
 -3.2518E-13  1.7656E-13 -2.6256E-14  1.1734E-14  2.5759E-13  5.5778E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.545207  167.348853    0.258681    0.008925   -0.955843  2451960.923034
# Heliocentric elements and errors
Epoch:              2451960.5000  =  2001/02/20
Mean Anomaly:          308.89045 +/-     0.228
Argument of Peri:       60.69141 +/-     0.237
Long of Asc Node:      158.91189 +/-     0.001
Inclination:             3.78511 +/-     0.000
Eccentricity:         0.01634288 +/-    0.0001
Semi-Major Axis:     43.96219186 +/-    0.0053
Time of Perihelion: 2467075.8082 +/-      67.5
Perihelion:          43.24372290 +/-    0.0060
Aphelion:            44.68066082 +/-    0.0061
Period (y)              291.4924 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -42.40134256 +/-    0.0013
Ecliptic Y            9.78807540 +/-    0.0003
Ecliptic Z            0.40512933 +/-    0.0000
Ecliptic XDOT        -0.00055380 +/-    0.0000
Ecliptic YDOT        -0.00255587 +/-    0.0000
Ecliptic ZDOT         0.00017095 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.51832259 +/-    0.0013
Geocenter to KBO     42.56467764 +/-    0.0014
# Hcoef:  7.28

The following table shows the complete astrometric record for 05GX186. 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 (05GX186) followed by the observatory code and reference code for the source of the astrometry.

2001 02  20.422291 11 14 18.36   +05 29 59.9   23.0V 05GX186   645  C~1DLx      
2001 02  20.423120 11 14 18.36   +05 29 59.9   22.3V 05GX186   645  C~1DLx      
2001 02  20.425608 11 14 18.35   +05 30 00.0   24.3V 05GX186   645  C~1DLx      
2005 04  10.21298  11 30 28.62   +04 09 21.2   23.3R 05GX186   695  Cn3379      
2005 04  11.21598  11 30 24.89   +04 09 45.3         05GX186   695  Cn3379      
2005 04  11.30781  11 30 24.55   +04 09 47.5         05GX186   695  Cn3379      
2006 03  02.39898  11 38 06.18   +03 25 11.4   22.7R 05GX186   695  Cr3594      
2006 03  02.45107  11 38 05.95   +03 25 13.0         05GX186   695  Cr3594      
2006 03  02.50340  11 38 05.73   +03 25 14.5         05GX186   695  Cr3594      
2006 04  26.05300  11 34 28.71   +03 49 02.4   22.1R 05GX186   807  Cr3594      
2006 04  26.13648  11 34 28.45   +03 49 04.0         05GX186   807  Cr3594      
2006 04  28.04040  11 34 22.89   +03 49 39.7         05GX186   807  Cr3594      
2007 02  15.28762  11 44 00.45   +02 51 59.8         05GX186   304  Cu1516      
2007 02  15.32606  11 44 00.28   +02 52 00.8         05GX186   304  Cu1516      
2007 02  15.36483  11 44 00.15   +02 52 01.7         05GX186   304  Cu1516      
2013 03  07.276203 12 11 53.80   +00 22 50.7   23.9r 05GX186   309  C~2HNs      
2013 03  07.280879 12 11 53.78   +00 22 50.8   23.9r 05GX186   309  C~2HNs      
2013 03  07.285567 12 11 53.76   +00 22 50.9   24.3r 05GX186   309  C~2HNs      
2013 03  07.290254 12 11 53.74   +00 22 51.0   24.3r 05GX186   309  C~2HNs      
2013 03  07.294953 12 11 53.72   +00 22 51.2   24.3r 05GX186   309  C~2HNs      
2013 03  14.28531  12 11 24.36   +00 26 11.8   23.2R 05GX186   695  C~0udF      
2013 03  14.39492  12 11 23.88   +00 26 14.9         05GX186   695  C~0udF      
2013 03  14.45549  12 11 23.64   +00 26 16.9         05GX186   695  C~0udF      

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    -0.18
  2   0.0000      0.00     0.02       0.00    -0.18
  3   0.0000     -0.18     0.01       0.03    -0.15
  4   4.1336  15264.93     0.09    1248.46    -0.09
  5   4.1363  15203.81    -0.03    1248.52    -0.16
  6   4.1366  15198.24     0.04    1248.53    -0.13
  7   5.0266  22665.69     0.21    1533.90     0.14
  8   5.0268  22661.85     0.07    1534.00     0.20
  9   5.0269  22658.18     0.12    1534.06     0.24
 10   5.1763  19073.01    -0.02    1553.89     0.24
 11   5.1765  19068.76    -0.09    1553.81     0.22
 12   5.1817  18977.44    -0.10    1553.56     0.34
 13   5.9846  28413.48     0.05    1823.71     0.07
 14   5.9847  28410.69    -0.32    1823.61    -0.07
 15   5.9848  28408.51    -0.07    1823.66    -0.06
 16  12.0407  56140.55    -0.03    3753.52    -0.11
 17  12.0407  56140.21    -0.02    3753.49    -0.14
 18  12.0407  56139.87    -0.01    3753.46    -0.18
 19  12.0407  56139.53     0.00    3753.43    -0.21
 20  12.0407  56139.15    -0.03    3753.49    -0.15
 21  12.0599  55619.70    -0.01    3759.26     0.07
 22  12.0602  55611.29    -0.04    3759.18    -0.03
 23  12.0603  55606.89     0.19    3759.57     0.34

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.

05GX186    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.803    43.819    43.787
ecceobj         0.015     0.015     0.015
incobj          3.790     3.790     3.790
qmin           42.633    42.642    42.597
qmax           45.589    45.569    45.549
amean          44.021    44.037    44.006
amin           43.686    43.702    43.671
amax           44.367    44.372    44.346
emean           0.014     0.014     0.014
emin            0.000     0.000     0.000
emax            0.028     0.027     0.027
imean           3.561     3.558     3.564
imin            3.003     3.003     3.002
imax            4.187     4.183     4.197
excite_mean     0.064     0.064     0.064
fracstop        1.000     1.000     1.000
cjmean          3.097     3.097     3.097

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       176.2     177.9     176.1
kozaiamp        180.0     180.0     180.0