Orbit Fit and Astrometric record for 02CZ154

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: 02CZ154   
# Created Wed Oct 18 01:37:17 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   19
# Arc:  13.03y
# First observation: 2002/02/06
#  Last observation: 2015/02/18
Preliminary a, adot, b, bdot, g, gdot:
   0.000914   0.025750  -0.000143   0.004421   0.029359   0.000000
# Chi-squared of fit:    25.77 DOF:   32 RMS:  0.21
# Min/Max residuals:    -0.43    0.42
# Exact a, adot, b, bdot, g, gdot:
  1.723257E-05  2.489042E-02  1.839603E-06  4.283588E-03  2.497347E-02  4.677258E-05
# Covariance matrix:
  2.2482E-13 -3.1986E-14  2.3836E-15 -3.5731E-15  1.3276E-13 -6.4395E-14
 -3.1986E-14  1.1497E-13 -1.6549E-14  1.9668E-14  1.9576E-13  3.4720E-13
  2.3836E-15 -1.6549E-14  1.5880E-13 -1.7095E-14 -2.9372E-14 -5.1035E-14
 -3.5731E-15  1.9668E-14 -1.7095E-14  5.9026E-15  3.3062E-14  6.0761E-14
  1.3276E-13  1.9576E-13 -2.9372E-14  3.3062E-14  7.4886E-13  5.8034E-13
 -6.4395E-14  3.4720E-13 -5.1035E-14  6.0761E-14  5.8034E-13  1.0728E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.431807  167.130460    0.483007    0.036254   -0.855786  2452311.926883
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:          353.82067 +/-     0.032
Argument of Peri:       20.75360 +/-     0.036
Long of Asc Node:      152.89893 +/-     0.000
Inclination:            10.06482 +/-     0.000
Eccentricity:         0.06202993 +/-    0.0001
Semi-Major Axis:     43.58713710 +/-    0.0057
Time of Perihelion: 2454114.6581 +/-       9.3
Perihelion:          40.88343026 +/-    0.0068
Aphelion:            46.29084395 +/-    0.0074
Period (y)              287.7701 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -39.72784046 +/-    0.0014
Ecliptic Y            9.57726353 +/-    0.0003
Ecliptic Z            1.69910396 +/-    0.0001
Ecliptic XDOT        -0.00060185 +/-    0.0000
Ecliptic YDOT        -0.00266418 +/-    0.0000
Ecliptic ZDOT         0.00046962 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.90124984 +/-    0.0013
Geocenter to KBO     40.04249491 +/-    0.0014
# Hcoef:  7.49

The following table shows the complete astrometric record for 02CZ154. 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 (02CZ154) followed by the observatory code and reference code for the source of the astrometry.

2002 02  06.42614  11 16 27.71   +07 19 19.5   22.9R 02CZ154   695  Cf0336      
2002 02  06.51965  11 16 27.37   +07 19 22.3         02CZ154   695  Cf0336      
2002 02  07.52844  11 16 23.50   +07 19 51.4         02CZ154   695  Cf0336      
2002 03  13.32916  11 13 54.92   +07 37 26.3         02CZ154   696  Cf5529      
2002 03  20.23066  11 13 23.52   +07 40 57.6   22.7R 02CZ154   695  Cf5529      
2002 03  20.35602  11 13 22.96   +07 41 01.7         02CZ154   695  Cf5529      
2004 02  26.37420  11 26 30.25   +06 48 47.6   23.4R 02CZ154   695  Ck0860      
2004 02  26.45335  11 26 29.89   +06 48 50.3         02CZ154   695  Ck0860      
2004 02  27.36964  11 26 25.83   +06 49 19.2         02CZ154   695  Ck0860      
2004 03  16.22871  11 25 04.52   +06 58 50.2   23.6R 02CZ154   695  Ck4262      
2004 03  16.28462  11 25 04.26   +06 58 51.8         02CZ154   695  Ck4262      
2013 03  12.27912  12 16 22.41   +03 44 23.8   23.2R 02CZ154   695  C~0ucs      
2013 03  12.33289  12 16 22.16   +03 44 25.2         02CZ154   695  C~0ucs      
2013 03  13.30200  12 16 17.89   +03 44 57.3         02CZ154   695  C~0ucs      
2013 05  14.17025  12 12 11.48   +04 11 11.3   23.7R 02CZ154   G37  C~0snX      
2013 05  14.24821  12 12 11.27   +04 11 12.2         02CZ154   G37  C~0snX      
2015 02  18.31502  12 29 05.49   +02 48 03.1   23.3R 02CZ154   695  C~1M63      
2015 02  18.40867  12 29 05.21   +02 48 05.9         02CZ154   695  C~1M63      
2015 02  18.49728  12 29 04.90   +02 48 08.6         02CZ154   695  C~1M63      

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    -0.30       0.00     0.18
  2   0.0003     -5.75    -0.02       0.60     0.42
  3   0.0030    -70.12     0.20       4.87     0.36
  4   0.0956  -2516.46     0.38     113.66     0.02
  5   0.1145  -3028.79    -0.11     126.46    -0.30
  6   0.1148  -3038.06    -0.08     126.99     0.08
  7   2.0532   8972.55    -0.02    1846.39    -0.12
  8   2.0535   8966.55    -0.13    1846.75     0.01
  9   2.0560   8899.45     0.08    1849.34    -0.43
 10   2.1049   7559.34    -0.06    1894.57    -0.07
 11   2.1050   7555.15    -0.01    1894.51    -0.21
 12  11.0934  55630.17     0.15   10116.51    -0.00
 13  11.0935  55625.89     0.18   10116.19    -0.40
 14  11.0962  55549.16     0.19   10118.56     0.02
 15  11.2656  51266.95    -0.08    9996.67     0.03
 16  11.2658  51263.51    -0.10    9996.16    -0.06
 17  13.0319  68530.78    -0.40   11966.64    -0.06
 18  13.0321  68525.24     0.15   11967.43     0.25
 19  13.0324  68519.30    -0.02   11967.93     0.28

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.

02CZ154    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.287    43.303    43.270
ecceobj         0.056     0.056     0.055
incobj         10.093    10.093    10.093
qmin           40.232    40.246    40.252
qmax           46.952    47.006    46.930
amean          43.498    43.515    43.481
amin           43.166    43.174    43.135
amax           43.853    43.876    43.832
emean           0.057     0.057     0.057
emin            0.043     0.044     0.043
emax            0.072     0.072     0.072
imean           9.359     9.356     9.363
imin            8.809     8.807     8.816
imax           10.044    10.041    10.050
excite_mean     0.172     0.172     0.172
fracstop        1.000     1.000     1.000
cjmean          3.060     3.060     3.060

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       177.6     178.0     178.1
kozaiamp        180.0     180.0     179.9