Orbit Fit and Astrometric record for 04MW8

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: 04MW8     
# Created Fri Dec 15 02:37:19 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   19
# Arc:  13.03y
# First observation: 2004/06/24
#  Last observation: 2017/07/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.019385   0.047353  -0.002795   0.006794   0.032572   0.000000
# Chi-squared of fit:    43.46 DOF:   32 RMS:  0.27
# Min/Max residuals:    -0.68    0.44
# Exact a, adot, b, bdot, g, gdot:
  1.735689E-05  3.573889E-02  1.481813E-06  5.125009E-03  3.293321E-02 -1.224377E-02
# Covariance matrix:
  2.4391E-13 -8.5617E-14  1.6523E-14 -1.0296E-14  2.1702E-14 -1.1001E-13
 -8.5617E-14  4.7859E-14 -1.0286E-14  6.4162E-15  3.3095E-15  6.8580E-14
  1.6523E-14 -1.0286E-14  1.3058E-13 -1.6039E-14  8.5597E-19 -1.5898E-14
 -1.0296E-14  6.4162E-15 -1.6039E-14  4.3971E-15  1.5037E-16  9.9153E-15
  2.1702E-14  3.3095E-15  8.5597E-19  1.5037E-16  3.7586E-13  2.1189E-15
 -1.1001E-13  6.8580E-14 -1.5898E-14  9.9153E-15  2.1189E-15  1.0598E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.640737  -74.359111    0.215810   -0.011083   -0.995201  2453180.936473
# Heliocentric elements and errors
Epoch:              2453180.5000  =  2004/06/24
Mean Anomaly:          299.19154 +/-     0.008
Argument of Peri:       94.75328 +/-     0.010
Long of Asc Node:      289.53902 +/-     0.000
Inclination:             8.22065 +/-     0.000
Eccentricity:         0.33129137 +/-    0.0000
Semi-Major Axis:     33.37903614 +/-    0.0027
Time of Perihelion: 2465078.4093 +/-       0.5
Perihelion:          22.32084949 +/-    0.0018
Aphelion:            44.43722279 +/-    0.0036
Period (y)              192.8497 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            8.24298310 +/-    0.0002
Ecliptic Y          -30.25307078 +/-    0.0005
Ecliptic Z           -0.33947556 +/-    0.0000
Ecliptic XDOT         0.00258559 +/-    0.0000
Ecliptic YDOT         0.00176957 +/-    0.0000
Ecliptic ZDOT         0.00043753 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.35777903 +/-    0.0005
Geocenter to KBO     30.36448406 +/-    0.0006
# Hcoef:  8.64

The following table shows the complete astrometric record for 04MW8. 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 (04MW8) followed by the observatory code and reference code for the source of the astrometry.

2004 06  24.43573  19 08 12.18   -23 09 32.3         04MW8     568  C~0X5X      
2004 06  24.46335  19 08 11.97   -23 09 32.7         04MW8     568  C~0X5X      
2004 06  25.45953  19 08 05.34   -23 09 40.7   23.4g 04MW8     568  C~0X5X      
2004 06  25.48243  19 08 05.19   -23 09 40.8   23.4g 04MW8     568  C~0X5X      
2004 06  25.50096  19 08 05.08   -23 09 41.1   23.6g 04MW8     568  C~0X5X      
2006 07  03.43985  19 24 56.39   -22 02 06.1   23.8r 04MW8     568  C~0X5X      
2006 07  03.46415  19 24 56.21   -22 02 06.5   23.6r 04MW8     568  C~0X5X      
2006 07  03.48530  19 24 56.07   -22 02 07.1   23.1r 04MW8     568  C~0X5X      
2006 07  04.43936  19 24 49.54   -22 02 17.3         04MW8     568  C~0X5X      
2006 10  23.12298  19 18 35.52   -22 08 52.0         04MW8     675  C~0X5X      
2007 05  15.44840  19 38 16.75   -21 16 44.7         04MW8     675  C~0X5X      
2007 05  15.45289  19 38 16.74   -21 16 44.6         04MW8     675  C~0X5X      
2007 05  16.42809  19 38 13.99   -21 16 47.7         04MW8     675  C~0X5X      
2007 09  16.17086  19 27 08.02   -21 35 00.4         04MW8     675  C~0X5X      
2009 06  20.45959  19 54 02.32   -19 55 08.2         04MW8     695  C~0X5X      
2009 06  21.37745  19 53 56.85   -19 55 18.8         04MW8     695  C~0X5X      
2009 06  21.43962  19 53 56.44   -19 55 20.0         04MW8     695  C~0X5X      
2017 07  04.37266  21 13 39.46   -12 05 40.0   22.3R 04MW8     G37  C~2IX9      
2017 07  04.42724  21 13 39.14   -12 05 40.9         04MW8     G37  C~2IX9      

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     0.20
  2   0.0001     -2.92    -0.37      -0.06     0.07
  3   0.0028    -94.67    -0.22       2.65     0.16
  4   0.0029    -96.73    -0.13       2.79     0.24
  5   0.0029    -98.28     0.08       2.67     0.07
  6   2.0233  14339.11     0.13    2197.46     0.40
  7   2.0233  14336.56    -0.05    2197.42     0.28
  8   2.0234  14334.54    -0.00    2197.11    -0.10
  9   2.0260  14242.78    -0.17    2200.10    -0.01
 10   2.3291   9023.03     0.42    2531.41     0.25
 11   2.8885  25897.25     0.34    3166.03    -0.43
 12   2.8885  25897.13     0.40    3166.16    -0.32
 13   2.8911  25858.11     0.44    3169.46    -0.43
 14   3.2272  16402.46     0.07    3542.84    -0.09
 15   4.9884  40202.64    -0.68    5681.64    -0.39
 16   4.9909  40121.92     0.15    5685.71     0.06
 17   4.9911  40115.79    -0.31    5685.61    -0.31
 18  13.0265 126487.11     0.07   18304.54     0.13
 19  13.0267 126480.56    -0.07   18304.95     0.17

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.

04MW8    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        33.479    33.487    33.471
ecceobj         0.336     0.336     0.336
incobj          8.215     8.215     8.215
qmin           21.873    21.875    21.872
qmax           44.713    44.723    44.702
amean          33.230    33.230    33.230
amin           32.983    32.979    32.991
amax           33.479    33.487    33.471
emean           0.334     0.334     0.334
emin            0.332     0.331     0.332
emax            0.337     0.337     0.337
imean           9.807     9.808     9.806
imin            9.786     9.787     9.786
imax            9.832     9.833     9.830
excite_mean     0.375     0.375     0.375
fracstop        0.000     0.000     0.000
cjmean          2.857     2.857     2.857

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        94.5      94.5      94.6
kozaiamp          0.5       0.5       0.5