Orbit Fit and Astrometric record for 00OB51

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: 00OB51    
# Created Thu Oct 19 01:37:07 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:   5.08y
# First observation: 1999/07/20
#  Last observation: 2004/08/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.000211   0.029817   0.000018  -0.002309   0.027750   0.000000
# Chi-squared of fit:    14.84 DOF:   30 RMS:  0.16
# Min/Max residuals:    -0.37    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.725643E-05  2.959652E-02  5.027225E-07 -2.287760E-03  2.808798E-02 -8.730713E-05
# Covariance matrix:
  4.5560E-13 -3.6310E-13 -2.1527E-14  3.0265E-14  5.2860E-13 -2.3974E-12
 -3.6310E-13  5.1256E-13  2.7667E-14 -3.8514E-14  3.4911E-13  3.0515E-12
 -2.1527E-14  2.7667E-14  1.7892E-13 -5.6856E-14 -1.5388E-14  1.9606E-13
  3.0265E-14 -3.8514E-14 -5.6856E-14  3.4248E-14  2.4210E-14 -2.7456E-13
  5.2860E-13  3.4911E-13 -1.5388E-14  2.4210E-14  7.2733E-12 -1.9139E-12
 -2.3974E-12  3.0515E-12  1.9606E-13 -2.7456E-13 -1.9139E-12  2.1751E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.557739  -45.694664    0.303834   -0.009656   -0.967300  2451379.938273
# Heliocentric elements and errors
Epoch:              2451370.5000  =  1999/07/11
Mean Anomaly:          340.26598 +/-     0.276
Argument of Peri:      208.31847 +/-     0.300
Long of Asc Node:      126.85323 +/-     0.001
Inclination:             4.45334 +/-     0.000
Eccentricity:         0.03988403 +/-    0.0003
Semi-Major Axis:     37.99484764 +/-    0.0150
Time of Perihelion: 2456059.6975 +/-      65.5
Perihelion:          36.47946013 +/-    0.0175
Aphelion:            39.51023515 +/-    0.0185
Period (y)              234.2045 +/-      0.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.33302602 +/-    0.0024
Ecliptic Y          -26.37945632 +/-    0.0025
Ecliptic Z           -0.34652222 +/-    0.0000
Ecliptic XDOT         0.00205361 +/-    0.0000
Ecliptic YDOT         0.00203120 +/-    0.0000
Ecliptic ZDOT        -0.00022286 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.57537424 +/-    0.0024
Geocenter to KBO     35.60241697 +/-    0.0034
# Hcoef:  8.08

The following table shows the complete astrometric record for 00OB51. 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 (00OB51) followed by the observatory code and reference code for the source of the astrometry.

1999 07  20.43753  21 07 45.71   -17 04 20.2   23.5R 00OB51    568  Cd3308      
1999 07  20.47712  21 07 45.51   -17 04 20.9         00OB51    568  Cd3308      
1999 07  20.50501  21 07 45.37   -17 04 21.6         00OB51    568  Cd3308      
2000 07  25.17661  21 14 14.02   -16 44 04.7   23.8R 00OB51    809  Cb7915      
2000 07  25.24538  21 14 13.65   -16 44 06.2         00OB51    809  Cb7915      
2000 07  25.31988  21 14 13.26   -16 44 08.3   23.8R 00OB51    809  Cb7915      
2000 08  03.15032  21 13 26.36   -16 47 51.7   23.5R 00OB51    809  Cb7915      
2000 08  03.22707  21 13 25.92   -16 47 53.6         00OB51    809  Cb7915      
2000 08  07.16484  21 13 04.70   -16 49 34.4         00OB51    809  Cc2361      
2000 08  07.23651  21 13 04.29   -16 49 36.4   23.3R 00OB51    809  Cc2361      
2000 08  07.28726  21 13 04.01   -16 49 37.5   23.5R 00OB51    809  Cc2361      
2001 07  24.47458  21 21 13.66   -16 20 22.5   22.8R 00OB51    568  Cd3308      
2001 07  24.52511  21 21 13.39   -16 20 23.9   23.1R 00OB51    568  Cd3308      
2001 07  24.56739  21 21 13.16   -16 20 24.8   22.8R 00OB51    568  Cd3308      
2001 07  25.53502  21 21 08.22   -16 20 49.4         00OB51    568  Cd3308      
2004 08  19.37071  21 39 31.06   -15 17 37.0   23.6g 00OB51    568  C74769      
2004 08  19.39699  21 39 30.91   -15 17 37.7   23.5g 00OB51    568  C74769      
2004 08  19.42797  21 39 30.75   -15 17 38.4   23.7g 00OB51    568  C74769      

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    -0.37
  2   0.0001     -2.95     0.04       0.16    -0.16
  3   0.0002     -5.07     0.11       0.08    -0.21
  4   1.0150   5685.19    -0.10    -480.29    -0.02
  5   1.0152   5679.67    -0.10    -480.14     0.21
  6   1.0154   5673.69    -0.10    -480.47    -0.04
  7   1.0396   4963.65     0.13    -492.96     0.21
  8   1.0398   4957.05    -0.12    -492.90     0.35
  9   1.0506   4635.99     0.20    -498.54    -0.11
 10   1.0508   4629.77    -0.07    -498.70    -0.21
 11   1.0509   4625.61    -0.03    -498.55    -0.03
 12   2.0124  11878.56     0.10    -951.99     0.16
 13   2.0126  11874.42    -0.02    -952.13     0.07
 14   2.0127  11870.98    -0.10    -951.97     0.28
 15   2.0153  11795.51     0.24    -953.56     0.23
 16   5.0840  28255.08    -0.00   -2419.40    -0.20
 17   5.0841  28252.76    -0.10   -2419.35    -0.14
 18   5.0842  28250.29     0.06   -2419.25    -0.03

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.

00OB51    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        37.931    37.976    37.887
ecceobj         0.038     0.039     0.038
incobj          4.456     4.456     4.456
qmin           35.378    35.361    35.369
qmax           40.649    40.730    40.538
amean          37.900    37.943    37.856
amin           37.611    37.646    37.566
amax           38.195    38.232    38.163
emean           0.042     0.044     0.041
emin            0.018     0.020     0.018
emax            0.064     0.066     0.063
imean           2.906     2.906     2.908
imin            1.453     1.496     1.498
imax            4.125     4.158     4.094
excite_mean     0.067     0.068     0.066
fracstop        1.000     1.000     1.000
cjmean          3.033     3.034     3.033

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       180.0     178.0     177.6
kozaiamp        180.0     180.0     180.0