Orbit Fit and Astrometric record for 99CH119

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: 99CH119   
# Created Sun Oct 22 01:37:00 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:  14.08y
# First observation: 1999/02/11
#  Last observation: 2013/03/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.000413   0.018414  -0.000232   0.006705   0.021024   0.000000
# Chi-squared of fit:    63.66 DOF:   34 RMS:  0.32
# Min/Max residuals:    -0.66    0.54
# Exact a, adot, b, bdot, g, gdot:
  1.145578E-05  1.801858E-02  7.325741E-06  6.543128E-03  2.178374E-02 -4.163123E-04
# Covariance matrix:
  1.6513E-13 -6.6449E-14  2.1850E-14 -2.0094E-14  1.2999E-14 -2.2101E-13
 -6.6449E-14  6.6764E-14 -2.5757E-14  2.3605E-14 -6.0146E-14  2.6054E-13
  2.1850E-14 -2.5757E-14  1.2331E-13 -2.2338E-14  2.6175E-14 -1.0706E-13
 -2.0094E-14  2.3605E-14 -2.2338E-14  1.2911E-14 -2.3557E-14  9.8084E-14
  1.2999E-14 -6.0146E-14  2.6175E-14 -2.3557E-14  2.9541E-13 -2.6483E-13
 -2.2101E-13  2.6054E-13 -1.0706E-13  9.8084E-14 -2.6483E-13  1.0829E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.442084  123.150045   -0.327568    0.007018   -0.937888  2451220.785643
# Heliocentric elements and errors
Epoch:              2451220.5000  =  1999/02/11
Mean Anomaly:          188.72423 +/-     0.038
Argument of Peri:      173.86902 +/-     0.029
Long of Asc Node:      122.35021 +/-     0.000
Inclination:            19.98408 +/-     0.000
Eccentricity:         0.08420244 +/-    0.0001
Semi-Major Axis:     43.23563300 +/-    0.0043
Time of Perihelion: 2500623.6425 +/-       8.1
Perihelion:          39.59508708 +/-    0.0054
Aphelion:            46.87617892 +/-    0.0060
Period (y)              284.2961 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.88136118 +/-    0.0006
Ecliptic Y           39.03900606 +/-    0.0010
Ecliptic Z            0.35453050 +/-    0.0000
Ecliptic XDOT        -0.00186565 +/-    0.0000
Ecliptic YDOT        -0.00127848 +/-    0.0000
Ecliptic ZDOT         0.00082193 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.84030895 +/-    0.0009
Geocenter to KBO     45.90578953 +/-    0.0011
# Hcoef:  7.23

The following table shows the complete astrometric record for 99CH119. 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 (99CH119) followed by the observatory code and reference code for the source of the astrometry.

1999 02  11.28490  08 22 13.14   +19 52 59.7   23.6R 99CH119   568  Ca4178      
1999 02  11.32683  08 22 12.96   +19 53 00.4   23.6R 99CH119   568  Ca4178      
1999 02  19.22921  08 21 39.54   +19 55 20.7   23.6R 99CH119   568  Ca4178      
1999 02  19.24081  08 21 39.49   +19 55 20.8   23.6R 99CH119   568  Ca4178      
1999 04  08.31256  08 19 37.27   +20 04 43.6   23.5R 99CH119   568  Ca4506      
1999 04  09.30819  08 19 36.66   +20 04 48.7   23.5R 99CH119   568  Ca4506      
2000 01  02.57599  08 29 52.41   +19 47 16.9         99CH119   568  Ca8502      
2000 01  02.61670  08 29 52.25   +19 47 17.9   23.2R 99CH119   568  Ca8502      
2000 01  02.64248  08 29 52.13   +19 47 18.3         99CH119   568  Ca8502      
2000 01  06.59699  08 29 35.25   +19 48 34.4         99CH119   568  Ca8502      
2000 01  06.62799  08 29 35.16   +19 48 34.7         99CH119   568  Ca8502      
2001 03  25.14839  08 29 07.65   +20 17 37.5   25.2R 99CH119   695  Cc9919      
2001 03  25.23714  08 29 07.41   +20 17 38.6         99CH119   695  Cc9919      
2002 02  06.44509  08 36 32.82   +20 12 05.8   22.8R 99CH119   568  Cf1463      
2002 02  06.49764  08 36 32.60   +20 12 06.9         99CH119   568  Cf1463      
2004 12  15.344777 08 54 15.40   +20 09 38.2         99CH119   645  C~1cF2      
2004 12  15.345606 08 54 15.40   +20 09 38.2         99CH119   645  C~1cF2      
2004 12  15.348094 08 54 15.39   +20 09 38.2         99CH119   645  C~1cF2      
2013 03  12.13951  09 26 06.44   +21 03 45.9   23.6R 99CH119   G37  C~0qSP      
2013 03  12.27776  09 26 05.90   +21 03 48.4         99CH119   G37  C~0qSP      

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     0.33       0.00    -0.53
  2   0.0001     -2.63     0.44       0.09    -0.58
  3   0.0218   -493.65     0.18      27.77    -0.24
  4   0.0218   -494.36     0.18      27.70    -0.35
  5   0.1534  -2300.29    -0.18     181.01    -0.52
  6   0.1561  -2309.82    -0.14     184.02    -0.50
  7   0.8906   6379.23    -0.12    1202.02     0.27
  8   0.8907   6376.79    -0.00    1202.44     0.54
  9   0.8908   6375.05    -0.13    1202.42     0.42
 10   0.9016   6125.25    -0.50    1218.56     0.52
 11   0.9017   6123.95     0.20    1218.54     0.39
 12   2.1160   5326.23     0.19    2816.70     0.36
 13   2.1162   5322.68    -0.66    2816.95     0.44
 14   2.9874  11491.21    -0.07    4044.61    -0.02
 15   2.9876  11487.92     0.23    4044.89     0.12
 16   5.8427  26092.98    -0.03    7905.01    -0.01
 17   5.8427  26092.98     0.01    7905.01    -0.02
 18   5.8427  26092.85    -0.02    7904.97    -0.07
 19  14.0804  51725.80     0.18   19505.63    -0.17
 20  14.0807  51717.30    -0.09   19505.44    -0.04

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.

99CH119    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.349    43.362    43.336
ecceobj         0.081     0.081     0.082
incobj         19.954    19.954    19.954
qmin           38.918    38.953    38.933
qmax           47.990    48.004    47.985
amean          43.360    43.373    43.346
amin           43.015    43.028    43.009
amax           43.724    43.726    43.699
emean           0.085     0.085     0.085
emin            0.073     0.073     0.074
emax            0.098     0.098     0.098
imean          18.409    18.411    18.407
imin           17.969    17.966    17.969
imax           18.862    18.864    18.873
excite_mean     0.327     0.327     0.327
fracstop        1.000     1.000     1.000
cjmean          2.963     2.963     2.963

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       180.6     180.5     180.2
kozaiamp        180.0     180.0     180.0