Orbit Fit and Astrometric record for 04MT8

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: 04MT8     
# Created Tue Dec 12 02:37:25 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc:  10.97y
# First observation: 2004/06/24
#  Last observation: 2015/06/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.000350   0.021259   0.000019  -0.000785   0.021301   0.000000
# Chi-squared of fit:    16.00 DOF:   26 RMS:  0.18
# Min/Max residuals:    -0.46    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.394868E-05  2.090037E-02  1.177841E-06 -7.728950E-04  2.277387E-02  2.616625E-04
# Covariance matrix:
  3.0483E-13 -1.8347E-13 -5.5091E-15  5.9721E-15  2.7300E-14 -6.5501E-13
 -1.8347E-13  2.1382E-13  7.0394E-15 -7.3947E-15 -2.7912E-13  8.1398E-13
 -5.5091E-15  7.0394E-15  1.5831E-13 -1.8154E-14 -1.0219E-14  2.7366E-14
  5.9721E-15 -7.3947E-15 -1.8154E-14  5.0393E-15  8.4423E-15 -2.8870E-14
  2.7300E-14 -2.7912E-13 -1.0219E-14  8.4423E-15  2.7757E-12 -9.5864E-13
 -6.5501E-13  8.1398E-13  2.7366E-14 -2.8870E-14 -9.5864E-13  3.1763E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.731073  -73.865623    0.223889   -0.012629   -0.993399  2453180.965493
# Heliocentric elements and errors
Epoch:              2453180.5000  =  2004/06/24
Mean Anomaly:          166.70576 +/-     0.165
Argument of Peri:       30.80483 +/-     0.144
Long of Asc Node:       87.22625 +/-     0.002
Inclination:             2.23788 +/-     0.000
Eccentricity:         0.04483042 +/-    0.0002
Semi-Major Axis:     43.02001423 +/-    0.0125
Time of Perihelion: 2508518.1433 +/-      42.3
Perihelion:          41.09140895 +/-    0.0151
Aphelion:            44.94861951 +/-    0.0160
Period (y)              282.1721 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.25878615 +/-    0.0009
Ecliptic Y          -43.19177549 +/-    0.0031
Ecliptic Z           -0.56017055 +/-    0.0000
Ecliptic XDOT         0.00241970 +/-    0.0000
Ecliptic YDOT         0.00066217 +/-    0.0000
Ecliptic ZDOT        -0.00009319 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.90123716 +/-    0.0030
Geocenter to KBO     43.90996442 +/-    0.0032
# Hcoef:  6.58

The following table shows the complete astrometric record for 04MT8. 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 (04MT8) followed by the observatory code and reference code for the source of the astrometry.

2004 06  24.46475  19 10 22.89   -23 11 24.8         04MT8     568  C~0VDq      
2004 06  25.46094  19 10 18.16   -23 11 32.7   23.3g 04MT8     568  C~0VDq      
2004 06  25.48385  19 10 18.05   -23 11 32.9   23.2g 04MT8     568  C~0VDq      
2004 06  25.50238  19 10 17.99   -23 11 33.5   23.3g 04MT8     568  C~0VDq      
2005 06  12.51114  19 16 28.80   -23 03 16.8         04MT8     568  C~0VDq      
2005 06  12.55080  19 16 28.65   -23 03 17.4   23.3R 04MT8     568  C~0VDq      
2005 06  13.49081  19 16 24.64   -23 03 25.2         04MT8     568  C~0VDq      
2006 07  03.44757  19 20 04.82   -22 59 30.0         04MT8     568  C~0VDq      
2006 07  03.46882  19 20 04.73   -22 59 30.4         04MT8     568  C~0VDq      
2006 07  03.48992  19 20 04.62   -22 59 30.6         04MT8     568  C~0VDq      
2007 05  16.40383  19 28 20.01   -22 44 49.8         04MT8     675  C~0VDq      
2007 05  16.43916  19 28 19.93   -22 44 50.0         04MT8     675  C~0VDq      
2015 06  12.36711  20 07 38.45   -21 25 18.5   21.8R 04MT8     695  C~1hTc      
2015 06  12.39269  20 07 38.35   -21 25 19.0         04MT8     695  C~1hTc      
2015 06  12.41872  20 07 38.26   -21 25 19.1         04MT8     695  C~1hTc      
2015 06  12.43624  20 07 38.19   -21 25 19.3         04MT8     695  C~1hTc      

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     0.12       0.00    -0.35
  2   0.0027    -65.69    -0.03      -0.00     0.30
  3   0.0028    -67.22    -0.02      -0.02     0.29
  4   0.0028    -68.12     0.33      -0.52    -0.19
  5   0.9666   5070.07    -0.46    -149.10     0.10
  6   0.9667   5067.94    -0.19    -149.43    -0.20
  7   0.9693   5012.02    -0.01    -149.93     0.13
  8   2.0232   8058.90    -0.07    -323.12     0.22
  9   2.0233   8057.62     0.09    -323.35    -0.00
 10   2.0233   8056.08    -0.00    -323.34     0.01
 11   2.8910  14980.44     0.10    -435.73    -0.18
 12   2.8911  14979.31     0.16    -435.77    -0.17
 13  10.9648  48937.88     0.12   -1768.54     0.03
 14  10.9649  48936.33    -0.06   -1768.73    -0.14
 15  10.9650  48935.01     0.02   -1768.56     0.06
 16  10.9650  48933.96    -0.09   -1768.54     0.10

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.

04MT8    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.026    43.063    42.989
ecceobj         0.044     0.043     0.044
incobj          2.242     2.242     2.242
qmin           39.906    39.955    39.791
qmax           46.611    46.613    46.682
amean          43.160    43.198    43.126
amin           42.839    42.866    42.787
amax           43.519    43.549    43.474
emean           0.052     0.052     0.053
emin            0.033     0.032     0.033
emax            0.072     0.071     0.074
imean           0.951     0.939     0.966
imin            0.282     0.271     0.281
imax            1.549     1.538     1.604
excite_mean     0.055     0.054     0.056
fracstop        1.000     1.000     1.000
cjmean          3.088     3.088     3.087

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       176.5     175.2     172.8
kozaiamp        179.9     179.9     180.0