Orbit Fit and Astrometric record for 02CB225

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: 02CB225   
# Created Mon Oct 23 01:37:17 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   25
# Arc:  13.12y
# First observation: 2002/02/07
#  Last observation: 2015/03/23
Preliminary a, adot, b, bdot, g, gdot:
  -0.003303   0.025131  -0.000123   0.000901   0.020311   0.000000
# Chi-squared of fit:     8.73 DOF:   38 RMS:  0.11
# Min/Max residuals:    -0.25    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.511385E-05  2.405645E-02  5.127798E-07  8.577605E-04  2.432376E-02 -1.401851E-03
# Covariance matrix:
  3.2946E-13 -1.2643E-13  8.0384E-15 -4.2586E-15  2.3966E-13 -3.7961E-13
 -1.2643E-13  8.6428E-14 -4.6690E-15  3.1314E-15 -1.0452E-13  2.8146E-13
  8.0384E-15 -4.6690E-15  1.2642E-13 -1.2292E-14  9.2439E-15 -1.5523E-14
 -4.2586E-15  3.1314E-15 -1.2292E-14  2.5139E-15 -3.8923E-15  1.0489E-14
  2.3966E-13 -1.0452E-13  9.2439E-15 -3.8923E-15  3.2857E-13 -3.4340E-13
 -3.7961E-13  2.8146E-13 -1.5523E-14  1.0489E-14 -3.4340E-13  9.4296E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.241616  157.857783    0.323646    0.052438   -0.927337  2452312.848143
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:          311.56287 +/-     0.055
Argument of Peri:      112.80760 +/-     0.066
Long of Asc Node:      100.40641 +/-     0.002
Inclination:             3.77794 +/-     0.000
Eccentricity:         0.07994327 +/-    0.0000
Semi-Major Axis:     44.21592420 +/-    0.0051
Time of Perihelion: 2466759.6519 +/-      16.1
Perihelion:          40.68115852 +/-    0.0050
Aphelion:            47.75068987 +/-    0.0057
Period (y)              294.0196 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -38.75651515 +/-    0.0009
Ecliptic Y           16.12547734 +/-    0.0004
Ecliptic Z            2.32478191 +/-    0.0001
Ecliptic XDOT        -0.00087810 +/-    0.0000
Ecliptic YDOT        -0.00257020 +/-    0.0000
Ecliptic ZDOT         0.00008769 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.04168285 +/-    0.0008
Geocenter to KBO     41.11206344 +/-    0.0010
# Hcoef:  7.19

The following table shows the complete astrometric record for 02CB225. 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 (02CB225) followed by the observatory code and reference code for the source of the astrometry.

2002 02  07.34740  10 43 02.45   +11 37 42.7   22.6R 02CB225   695  Cf0409      
2002 02  07.44282  10 43 02.03   +11 37 45.7         02CB225   695  Cf0409      
2002 02  08.38954  10 42 57.97   +11 38 11.8         02CB225   695  Cf0409      
2002 03  09.41141  10 40 45.81   +11 51 44.9   22.5R 02CB225   568  Cf2752      
2002 03  09.48148  10 40 45.47   +11 51 46.7         02CB225   568  Cf2752      
2002 05  11.91582  10 37 33.63   +12 07 44.5         02CB225   950  Cf7296      
2002 05  11.96296  10 37 33.59   +12 07 44.4         02CB225   950  Cf7296      
2002 05  12.91539  10 37 32.93   +12 07 44.3         02CB225   950  Cf7296      
2002 05  12.97708  10 37 32.88   +12 07 44.1         02CB225   950  Cf7296      
2003 03  05.31613  10 46 24.48   +11 21 14.6   22.8R 02CB225   662  Ch6137      
2003 03  05.39992  10 46 24.07   +11 21 16.9         02CB225   662  Ch6137      
2003 03  06.23876  10 46 20.21   +11 21 39.6   22.4R 02CB225   662  Ch6137      
2003 03  06.34313  10 46 19.73   +11 21 42.5         02CB225   662  Ch6137      
2004 03  20.24115  10 50 32.85   +10 59 12.1   22.8R 02CB225   662  Ck2152      
2004 03  20.36851  10 50 32.24   +10 59 15.1         02CB225   662  Ck2152      
2008 11  28.19958  11 21 24.93   +07 54 03.4   25.3R 02CB225   250  S~06AT      
2008 11  28.20583  11 21 24.94   +07 54 03.4         02CB225   250  S~06AT      
2008 11  28.21277  11 21 24.96   +07 54 03.3         02CB225   250  S~06AT      
2008 11  28.21902  11 21 24.97   +07 54 03.3         02CB225   250  S~06AT      
2013 03  13.35725  11 38 47.94   +06 18 40.4   23.0R 02CB225   695  C~0ucs      
2013 03  14.33406  11 38 43.46   +06 19 09.4         02CB225   695  C~0ucs      
2013 03  14.44273  11 38 42.95   +06 19 12.6         02CB225   695  C~0ucs      
2015 03  23.18015  11 48 43.99   +05 17 56.9   22.9R 02CB225   695  C~1Q3B      
2015 03  23.24427  11 48 43.69   +05 17 58.6         02CB225   695  C~1Q3B      
2015 03  23.30353  11 48 43.41   +05 18 00.2         02CB225   695  C~1Q3B      

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     0.11       0.00     0.01
  2   0.0003     -6.85    -0.09       0.46     0.30
  3   0.0029    -71.93    -0.00       2.21     0.01
  4   0.0823  -2176.16     0.16      27.70     0.17
  5   0.0825  -2181.46    -0.02      27.50     0.03
  6   0.2562  -5151.34     0.04    -133.59    -0.09
  7   0.2563  -5151.84     0.05    -133.90    -0.19
  8   0.2589  -5160.80    -0.02    -137.59    -0.07
  9   0.2591  -5161.41    -0.04    -138.05    -0.25
 10   1.0704   3123.21 (  -0.16)    206.17 (   0.57)
 11   1.0706   3116.76 (  -0.38)    206.01 (   0.45)
 12   1.0729   3055.61    -0.21     205.51    -0.07
 13   1.0732   3047.98    -0.11     205.52    -0.02
 14   2.1133   7008.93 (   0.71)    373.98 (   0.59)
 15   2.1137   6999.47     0.10     373.32     0.15
 16   6.8059  36956.14     0.01     931.54    -0.01
 17   6.8059  36956.28    -0.04     931.60     0.01
 18   6.8059  36956.60     0.06     931.63     0.00
 19   6.8059  36956.75     0.01     931.69     0.03
 20  11.0938  54282.68     0.18    2062.43     0.18
 21  11.0965  54204.83    -0.05    2061.27    -0.03
 22  11.0968  54196.01    -0.12    2061.04    -0.09
 23  13.1193  64689.53     0.00    2450.93     0.16
 24  13.1195  64684.28     0.01    2450.59    -0.03
 25  13.1197  64679.37    -0.03    2450.29    -0.19

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.

02CB225    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.907    43.922    43.892
ecceobj         0.076     0.076     0.076
incobj          3.780     3.780     3.780
qmin           39.993    40.064    40.037
qmax           48.370    48.432    48.366
amean          44.096    44.111    44.081
amin           43.746    43.758    43.731
amax           44.460    44.491    44.449
emean           0.073     0.073     0.073
emin            0.057     0.057     0.056
emax            0.088     0.089     0.089
imean           2.040     2.040     2.040
imin            1.323     1.328     1.317
imax            2.726     2.723     2.727
excite_mean     0.082     0.082     0.081
fracstop        1.000     1.000     1.000
cjmean          3.095     3.095     3.094

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       190.9     190.6     190.8
kozaiamp        180.0     180.0     180.0