Orbit Fit and Astrometric record for 02CT154

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: 02CT154   
# Created Sat Dec 16 02:37:11 2017
# Orbit generated from Bernstein formalism
# Fitting   22 observations of   22
# Arc:  11.97y
# First observation: 2001/03/25
#  Last observation: 2013/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.000660   0.025583  -0.000042   0.001578   0.024784   0.000000
# Chi-squared of fit:    75.49 DOF:   38 RMS:  0.33
# Min/Max residuals:    -0.76    0.73
# Exact a, adot, b, bdot, g, gdot:
  1.547579E-05  2.502458E-02  3.267458E-06  1.542024E-03  2.449446E-02  6.103521E-04
# Covariance matrix:
  7.6086E-13 -7.0049E-13  3.9389E-14 -4.1919E-14 -2.1572E-13 -2.0634E-12
 -7.0049E-13  7.2132E-13 -4.1004E-14  4.3617E-14  1.9907E-13  2.1467E-12
  3.9389E-14 -4.1004E-14  9.9908E-14 -1.4248E-14 -1.1296E-14 -1.2279E-13
 -4.1919E-14  4.3617E-14 -1.4248E-14  7.1089E-15  1.2325E-14  1.3062E-13
 -2.1572E-13  1.9907E-13 -1.1296E-14  1.2325E-14  4.3165E-13  6.1014E-13
 -2.0634E-12  2.1467E-12 -1.2279E-13  1.3062E-13  6.1014E-13  6.4290E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.261429  163.109000   -0.371239    0.004091   -0.930401  2451993.689923
# Heliocentric elements and errors
Epoch:              2451990.5000  =  2001/03/22
Mean Anomaly:           16.24339 +/-     0.036
Argument of Peri:      343.64451 +/-     0.047
Long of Asc Node:      159.46952 +/-     0.000
Inclination:             3.53776 +/-     0.000
Eccentricity:         0.11456305 +/-    0.0001
Semi-Major Axis:     46.85074415 +/-    0.0059
Time of Perihelion: 2446705.4711 +/-      11.8
Perihelion:          41.48338007 +/-    0.0074
Aphelion:            52.21810822 +/-    0.0084
Period (y)              320.6882 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -40.05828246 +/-    0.0011
Ecliptic Y           11.78153191 +/-    0.0003
Ecliptic Z            0.18642630 +/-    0.0000
Ecliptic XDOT        -0.00088557 +/-    0.0000
Ecliptic YDOT        -0.00265395 +/-    0.0000
Ecliptic ZDOT         0.00017286 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.75530197 +/-    0.0010
Geocenter to KBO     40.82556248 +/-    0.0011
# Hcoef:  7.13

The following table shows the complete astrometric record for 02CT154. 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 (02CT154) followed by the observatory code and reference code for the source of the astrometry.

2001 03  25.18918  10 58 08.00   +06 52 41.7   24.6R 02CT154   695  Cj8745      
2002 02  06.40649  11 07 00.61   +06 02 25.2   22.7R 02CT154   695  Cf0336      
2002 02  06.49976  11 07 00.24   +06 02 27.8         02CT154   695  Cf0336      
2002 02  07.51447  11 06 56.30   +06 02 53.7         02CT154   695  Cf0336      
2002 03  05.229242 11 05 05.29   +06 14 55.2         02CT154   645  C~1GH1      
2002 03  05.230071 11 05 05.28   +06 14 55.2         02CT154   645  C~1GH1      
2002 03  05.232559 11 05 05.27   +06 14 55.4         02CT154   645  C~1GH1      
2002 03  14.19060  11 04 24.93   +06 19 16.2         02CT154   696  Cf5529      
2002 03  14.20528  11 04 24.88   +06 19 16.8         02CT154   696  Cf5529      
2002 03  14.22060  11 04 24.82   +06 19 16.8         02CT154   696  Cf5529      
2002 03  20.22230  11 03 58.27   +06 22 07.3   22.3R 02CT154   695  Cf5529      
2002 03  20.34667  11 03 57.73   +06 22 11.2         02CT154   695  Cf5529      
2002 05  11.89376  11 01 17.34   +06 39 19.9         02CT154   950  Cf4730      
2002 05  11.94093  11 01 17.24   +06 39 20.4         02CT154   950  Cf4730      
2002 05  11.98899  11 01 17.14   +06 39 21.3         02CT154   950  Cf4730      
2002 05  12.89319  11 01 16.10   +06 39 27.9         02CT154   950  Cf4730      
2002 05  12.95582  11 01 16.02   +06 39 28.4         02CT154   950  Cf4730      
2003 03  30.20052  11 08 44.40   +05 58 07.9   22.4R 02CT154   695  Cj8745      
2003 03  30.29729  11 08 43.98   +05 58 10.0         02CT154   695  Cj8745      
2013 03  12.26660  12 03 27.03   +01 01 20.6   23.0R 02CT154   695  C~0ucs      
2013 03  12.31846  12 03 26.81   +01 01 22.5         02CT154   695  C~0ucs      
2013 03  13.28932  12 03 22.61   +01 01 50.8         02CT154   695  C~0ucs      

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     0.14       0.00    -0.47
  2   0.8712   8492.46    -0.22     276.42    -0.13
  3   0.8715   8486.36    -0.34     276.67     0.06
  4   0.8743   8422.03    -0.06     277.78     0.07
  5   0.9447   6613.83    -0.00     302.38    -0.67
  6   0.9447   6613.70    -0.08     302.32    -0.73
  7   0.9447   6613.48    -0.11     302.45    -0.60
  8   0.9692   5957.35     0.27     310.55     0.11
  9   0.9692   5956.43     0.43     310.82     0.36
 10   0.9693   5955.60     0.73     310.47     0.01
 11   0.9857   5524.32    -0.14     314.88    -0.13
 12   0.9861   5515.38    -0.17     315.37     0.33
 13   1.1299   2912.13     0.52     343.10     0.33
 14   1.1301   2910.56    -0.05     342.99     0.22
 15   1.1302   2908.84    -0.76     343.25     0.49
 16   1.1327   2891.99    -0.12     343.38     0.23
 17   1.1328   2890.70    -0.17     343.38     0.24
 18   2.0124  10022.50     0.09     640.09     0.46
 19   2.0126  10015.90     0.02     639.59    -0.06
 20  11.9646  64142.29    -0.12    3889.26    -0.25
 21  11.9648  64138.14    -0.15    3889.68     0.16
 22  11.9674  64062.41     0.27    3890.13    -0.01

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.

02CT154    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.635    46.653    46.618
ecceobj         0.111     0.111     0.110
incobj          3.542     3.542     3.542
qmin           40.799    40.804    40.787
qmax           53.278    53.264    53.248
amean          46.857    46.875    46.840
amin           46.456    46.478    46.448
amax           47.290    47.290    47.269
emean           0.114     0.114     0.113
emin            0.101     0.101     0.101
emax            0.127     0.127     0.127
imean           3.115     3.114     3.117
imin            2.705     2.705     2.706
imax            3.486     3.484     3.486
excite_mean     0.126     0.126     0.126
fracstop        1.000     1.000     1.000
cjmean          3.117     3.118     3.117

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       174.6     174.5     174.7
kozaiamp        179.9     180.0     180.0