Orbit Fit and Astrometric record for 66452

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: 66452     
# Created Sun Oct 22 01:36:24 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   64 observations of   65
# Arc:   8.16y
# First observation: 1999/07/21
#  Last observation: 2007/09/18
# Chi-squared of fit:   123.78 DOF:  122 RMS:  0.25
# Min/Max residuals:    -0.79    0.98
# Exact a, adot, b, bdot, g, gdot:
  1.491483E-05  2.124873E-02  1.672384E-06 -9.867875E-04  2.273766E-02  1.535936E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.083225  -43.449141    0.323775   -0.001627   -0.960617  2451381.041183
# Heliocentric elements and errors
Epoch:              2451380.5000  =  1999/07/21
Mean Anomaly:           82.61451 +/-     0.000
Argument of Peri:       92.06514 +/-     0.000
Long of Asc Node:      134.39318 +/-     0.000
Inclination:             2.65496 +/-     0.000
Eccentricity:         0.06179252 +/-    0.0000
Semi-Major Axis:     45.13364725 +/-    0.0000
Time of Perihelion: 2425964.7527 +/-       0.0
Perihelion:          42.34472561 +/-    0.0000
Aphelion:            47.92256890 +/-    0.0000
Period (y)              303.2207 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.41176692 +/-    0.0000
Ecliptic Y          -31.13912876 +/-    0.0000
Ecliptic Z           -0.06379523 +/-    0.0000
Ecliptic XDOT         0.00189024 +/-    0.0000
Ecliptic YDOT         0.00173892 +/-    0.0000
Ecliptic ZDOT        -0.00011904 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.94628389 +/-    0.0000
Geocenter to KBO     43.97987470 +/-    0.0000
# Hcoef:  6.95

The following table shows the complete astrometric record for 66452. 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 (66452) followed by the observatory code and reference code for the source of the astrometry.

1999 07  21.54044  21 16 07.61   -15 57 19.2   23.1R 66452     568  Ca6755      
1999 07  21.56743  21 16 07.49   -15 57 19.8         66452     568  Ca6755      
1999 07  21.59867  21 16 07.36   -15 57 20.3         66452     568  Ca6755      
1999 08  06.22700  21 14 59.34   -16 02 37.0         66452     807  Ca6755      
1999 08  06.23268  21 14 59.29   -16 02 37.2         66452     807  Ca6755      
1999 08  06.23836  21 14 59.27   -16 02 37.2         66452     807  Ca6755      
1999 08  07.14731  21 14 55.24   -16 02 56.6         66452     807  Ca6755      
1999 08  07.15300  21 14 55.20   -16 02 56.6         66452     807  Ca6755      
1999 08  07.15868  21 14 55.20   -16 02 56.6         66452     807  Ca6755      
1999 08  07.33004  21 14 54.39   -16 03 00.0         66452     807  Ca6755      
1999 08  07.33572  21 14 54.38   -16 03 00.1         66452     807  Ca6755      
1999 08  07.34140  21 14 54.35   -16 03 00.3         66452     807  Ca6755      
2000 08  05.45662  21 19 53.50   -15 43 46.9         66452     568  Cb7609      
2000 08  05.49787  21 19 53.30   -15 43 47.8   22.7R 66452     568  Cb7609      
2000 08  05.53971  21 19 53.12   -15 43 48.7         66452     568  Cb7609      
2000 08  06.44478  21 19 49.11   -15 44 08.0   23.0R 66452     568  Cb7609      
2000 08  06.48713  21 19 48.92   -15 44 08.8   22.9R 66452     568  Cb7609      
2000 08  06.52918  21 19 48.72   -15 44 09.6   22.6R 66452     568  Cb7609      
2000 09  23.27096  21 16 38.99   -15 59 03.4   22.8R 66452     568  Cb9102      
2000 09  23.31927  21 16 38.85   -15 59 04.0   22.9R 66452     568  Cb9102      
2000 09  23.36754  21 16 38.71   -15 59 04.9         66452     568  Cb9102      
2000 09  24.26500  21 16 36.07   -15 59 17.4   23.2R 66452     568  Cc0831      
2000 09  24.31434  21 16 35.93   -15 59 18.1   23.4R 66452     568  Cc0831      
2000 09  24.37352  21 16 35.75   -15 59 18.9   23.4R 66452     568  Cc0831      
2001 07  23.37997  21 25 42.646  -15 19 58.91        66452     568  Cl5519      
2001 07  23.44797  21 25 42.380  -15 20 00.00        66452     568  Cl5519      
2001 07  25.52128  21 25 33.69   -15 20 42.5   22.9R 66452     568  Cd2765      
2001 07  25.55535  21 25 33.54   -15 20 43.2   23.6R 66452     568  Cd2765      
2001 07  25.59235  21 25 33.38   -15 20 44.0   23.0R 66452     568  Cd2765      
2001 07  26.54551  21 25 29.45   -15 21 05.7         66452     568  Cd2765      
2001 09  19.27339  21 21 43.12   -15 39 12.7   22.9R 66452     675  Ce0165      
2001 09  19.31108  21 21 43.01   -15 39 12.9         66452     675  Ce0165      
2002 07  06.37425  21 31 36.86   -14 55 00.9   23.6R 66452     695  Cf8736      
2002 07  06.41674  21 31 36.71   -14 55 01.6   23.6R 66452     695  Cf8736      
2002 07  06.45235  21 31 36.59   -14 55 02.3   23.7R 66452     695  Cf8736      
2003 08  24.17568  21 33 04.58   -14 51 57.4   22.0R 66452     807  Ci3189      
2003 08  25.10841  21 33 00.56   -14 52 17.2         66452     807  Ci3189      
2003 08  25.18963  21 33 00.23   -14 52 19.2         66452     807  Ci3189      
2004 08  19.37236  21 38 08.78   -14 30 27.7   23.2g 66452     568  C~0VDs      
2004 08  19.39863  21 38 08.70   -14 30 27.9   23.1g 66452     568  C~0VDs      
2004 08  19.42961  21 38 08.56   -14 30 29.1   23.3g 66452     568  C~0VDs      
2004 08  20.40721  21 38 04.30   -14 30 50.6   23.3g 66452     568  C~0VDs      
2004 10  13.26576  21 35 00.57   -14 46 14.4   22.6i 66452     568  C~0VDs      
2006 07  20.44487  21 49 43.98   -13 38 13.2         66452     568  C~0VDs      
2006 07  20.44677  21 49 43.96   -13 38 13.4   23.8r 66452     568  C~0VDs      
2006 07  20.47127  21 49 43.87   -13 38 13.9   23.5r 66452     568  C~0VDs      
2006 07  20.47316  21 49 43.85   -13 38 13.9   23.8r 66452     568  C~0VDs      
2006 07  20.49778  21 49 43.78   -13 38 14.3   23.5r 66452     568  C~0VDs      
2006 07  20.49965  21 49 43.75   -13 38 14.3   23.9r 66452     568  C~0VDs      
2006 07  26.38253  21 49 21.12   -13 40 16.8   23.8r 66452     568  C~0VDs      
2006 07  26.38437  21 49 21.11   -13 40 17.0   23.5r 66452     568  C~0VDs      
2006 07  26.40846  21 49 21.02   -13 40 17.5   24.4r 66452     568  C~0VDs      
2006 07  26.41034  21 49 21.02   -13 40 17.9   23.7r 66452     568  C~0VDs      
2006 07  26.43447  21 49 20.91   -13 40 18.1   23.9r 66452     568  C~0VDs      
2006 07  26.43633  21 49 20.90   -13 40 18.1   23.7r 66452     568  C~0VDs      
2007 06  29.34267  21 55 31.78   -13 10 56.3   23.2R 66452     250  S~06Fl      
2007 06  29.34962  21 55 31.76   -13 10 56.5         66452     250  S~06Fl      
2007 06  29.40934  21 55 31.62   -13 10 57.3         66452     250  S~06Fl      
2007 06  29.41698  21 55 31.60   -13 10 57.4         66452     250  S~06Fl      
2007 09  11.27911  21 50 47.67   -13 36 41.5   22.4r 66452     695  C~0VDs      
2007 09  11.33774  21 50 47.45   -13 36 42.6   22.3r 66452     695  C~0VDs      
2007 09  12.28307  21 50 43.76   -13 37 01.8   22.7r 66452     695  C~0VDs      
2007 09  16.25823  21 50 28.62   -13 38 21.9         66452     675  C~0VDs      
2007 09  18.26364  21 50 21.20   -13 39 00.4         66452     675  C~0VDs      
2007 09  18.26899  21 50 21.19   -13 39 00.3         66452     675  C~0VDs      

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    -0.15       0.00    -0.79
  2   0.0001      0.00     0.10       0.00    -0.53
  3   0.0002      0.00     0.14       0.00    -0.42
  4   0.0429      0.00     0.21       0.00     0.37
  5   0.0430      0.00    -0.15       0.00     0.29
  6   0.0430      0.00    -0.07       0.00     0.41
  7   0.0455      0.00     0.19       0.00    -0.15
  8   0.0455      0.00    -0.02       0.00    -0.03
  9   0.0455      0.00     0.36       0.00     0.09
 10   0.0460      0.00    -0.14       0.00     0.23
 11   0.0460      0.00     0.10       0.00     0.25
 12   0.0460      0.00     0.03       0.00     0.16
 13   1.0429      0.00     0.33       0.00     0.23
 14   1.0430      0.00     0.13       0.00     0.20
 15   1.0431      0.00     0.25       0.00     0.18
 16   1.0456      0.00     0.22       0.00    -0.04
 17   1.0457      0.00     0.24       0.00     0.05
 18   1.0458      0.00     0.08       0.00     0.13
 19   1.1765      0.00     0.05       0.00     0.12
 20   1.1767      0.00     0.15       0.00     0.19
 21   1.1768      0.00     0.24       0.00    -0.05
 22   1.1793      0.00    -0.20       0.00    -0.25
 23   1.1794      0.00    -0.11       0.00    -0.28
 24   1.1796      0.00    -0.18       0.00    -0.29
 25   2.0064      0.00    -0.24       0.00    -0.19
 26   2.0066      0.00     0.08       0.00     0.11
 27   2.0123      0.00    -0.09       0.00     0.03
 28   2.0124      0.00    -0.15       0.00     0.02
 29   2.0125      0.00    -0.17       0.00    -0.02
 30   2.0151      0.00 (   1.22)      0.00 (  -2.04)
 31   2.1649      0.00    -0.63       0.00     0.60
 32   2.1650      0.00    -0.40       0.00     0.98
 33   2.9592      0.00     0.06       0.00    -0.32
 34   2.9593      0.00     0.00       0.00    -0.29
 35   2.9594      0.00     0.04       0.00    -0.38
 36   4.0921      0.00     0.08       0.00    -0.33
 37   4.0946      0.00     0.06       0.00    -0.06
 38   4.0949      0.00     0.45       0.00    -0.31
 39   5.0810      0.00    -0.22       0.00    -0.02
 40   5.0811      0.00     0.33       0.00     0.37
 41   5.0811      0.00     0.29       0.00    -0.14
 42   5.0838      0.00     0.26       0.00     0.05
 43   5.2313      0.00     0.08       0.00    -0.31
 44   6.9977      0.00     0.24       0.00     0.14
 45   6.9977      0.00     0.05       0.00    -0.02
 46   6.9978      0.00     0.10       0.00    -0.02
 47   6.9978      0.00    -0.09       0.00     0.02
 48   6.9978      0.00     0.26       0.00     0.12
 49   6.9978      0.00    -0.08       0.00     0.16
 50   7.0139      0.00     0.20       0.00     0.10
 51   7.0139      0.00     0.16       0.00    -0.06
 52   7.0140      0.00     0.27       0.00    -0.04
 53   7.0140      0.00     0.38       0.00    -0.40
 54   7.0141      0.00     0.19       0.00    -0.08
 55   7.0141      0.00     0.15       0.00    -0.04
 56   7.9392      0.00    -0.21       0.00     0.30
 57   7.9392      0.00    -0.25       0.00     0.20
 58   7.9394      0.00    -0.12       0.00     0.25
 59   7.9394      0.00    -0.13       0.00     0.26
 60   8.1417      0.00     0.04       0.00    -0.18
 61   8.1418      0.00     0.25       0.00    -0.08
 62   8.1444      0.00     0.18       0.00     0.16
 63   8.1553      0.00     0.19       0.00    -0.31
 64   8.1608      0.00    -0.23       0.00    -0.03
 65   8.1608      0.00    -0.08       0.00     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.

66452    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.057    45.057    45.057
ecceobj         0.061     0.062     0.061
incobj          2.656     2.656     2.656
qmin           41.521    41.527    41.532
qmax           48.692    48.698    48.726
amean          45.015    45.015    45.016
amin           44.659    44.659    44.659
amax           45.381    45.390    45.393
emean           0.060     0.060     0.060
emin            0.046     0.046     0.046
emax            0.073     0.074     0.074
imean           1.799     1.799     1.799
imin            1.293     1.293     1.296
imax            2.291     2.292     2.291
excite_mean     0.068     0.068     0.068
fracstop        1.000     1.000     1.000
cjmean          3.108     3.108     3.108

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       184.0     183.8     183.6
kozaiamp        180.0     180.0     179.9