Orbit Fit and Astrometric record for 02CP154

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: 02CP154   
# Created Tue Oct 23 01:07:57 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    8 observations of    8
# Arc:  11.10y
# First observation: 2002/02/06
#  Last observation: 2013/03/14
# Chi-squared of fit:    12.60 DOF:   10 RMS:  0.22
# Min/Max residuals:    -0.37    0.38
# Exact a, adot, b, bdot, g, gdot:
  1.628919E-05  2.512627E-02  1.166940E-06  2.305005E-04  2.402322E-02  1.746910E-03
# Covariance matrix:
  5.1461E-13  1.3626E-11  4.9694E-16  1.2688E-13  3.3891E-12  5.1044E-11
  1.3626E-11  1.5850E-08 -1.0975E-12  1.4732E-10  2.7439E-09  5.9434E-08
  4.9694E-16 -1.0975E-12  2.9648E-13 -3.7034E-14 -1.8282E-13 -4.1163E-12
  1.2688E-13  1.4732E-10 -3.7034E-14  1.3756E-12  2.5504E-11  5.5243E-10
  3.3891E-12  2.7439E-09 -1.8282E-13  2.5504E-11  4.8010E-10  1.0288E-08
  5.1044E-11  5.9434E-08 -4.1163E-12  5.5243E-10  1.0288E-08  2.2286E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.405258  135.591056   -0.032544    0.024025   -0.982463  2452311.708613
# Heliocentric elements and errors
Epoch:              2452312.5000  =  2002/02/07
Mean Anomaly:           16.09135 +/-     4.427
Argument of Peri:       44.34617 +/-     6.522
Long of Asc Node:       66.64635 +/-     0.025
Inclination:             1.47062 +/-     0.000
Eccentricity:         0.20476301 +/-    0.0135
Semi-Major Axis:     52.75444884 +/-    0.5824
Time of Perihelion: 2446056.7837 +/-    1724.3
Perihelion:          41.95228921 +/-    0.8505
Aphelion:            63.55660846 +/-    1.0006
Period (y)              383.1747 +/-      6.35
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.45149925 +/-    0.0272
Ecliptic Y           29.78989802 +/-    0.0267
Ecliptic Z            1.02089246 +/-    0.0009
Ecliptic XDOT        -0.00215407 +/-    0.0000
Ecliptic YDOT        -0.00190748 +/-    0.0000
Ecliptic ZDOT         0.00003136 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.61185084 +/-    0.0269
Geocenter to KBO     41.62638644 +/-    0.0381
# Hcoef:  6.63

The following table shows the complete astrometric record for 02CP154. 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 (02CP154) followed by the observatory code and reference code for the source of the astrometry.

2002 02  06.20787  09 13 57.22   +17 30 14.1   21.9R 02CP154   695  Cf0336      
2002 02  06.30231  09 13 56.76   +17 30 16.2         02CP154   695  Cf0336      
2002 02  07.25891  09 13 52.14   +17 30 36.7         02CP154   695  Cf0336      
2002 03  08.38502  09 11 41.15   +17 40 04.7   22.2R 02CP154   568  Cf2717      
2002 03  08.46280  09 11 40.83   +17 40 05.9         02CP154   568  Cf2717      
2013 03  13.25556  10 12 03.22   +12 43 43.3   23.7R 02CP154   695  C~0xPv      
2013 03  14.21369  10 11 59.29   +12 44 04.8         02CP154   695  C~0xPv      
2013 03  14.36419  10 11 58.67   +12 44 08.3         02CP154   695  C~0xPv      

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    -0.01       0.00    -0.22
  2   0.0003      0.00     0.01       0.00    -0.17
  3   0.0029      0.00    -0.24       0.00    -0.29
  4   0.0826      0.00     0.16       0.00     0.38
  5   0.0828      0.00     0.05       0.00     0.32
  6  11.0966      0.00    -0.10       0.00    -0.37
  7  11.0993      0.00    -0.00       0.00     0.07
  8  11.0997      0.00     0.09       0.00     0.29

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.

02CP154    quality flag:2

Type:      CLASSICAL  SCATNEAR  SCATNEAR

axisobj        52.345    52.345    52.345
ecceobj         0.199     0.199     0.199
incobj          1.470     1.470     1.470
qmin           41.248    41.225    41.256
qmax           63.978    63.975    64.005
amean          52.358    52.358    52.357
amin           51.886    51.880    51.869
amax           52.914    52.929    52.920
emean           0.199     0.199     0.199
emin            0.189     0.189     0.189
emax            0.210     0.209     0.210
imean           0.959     0.959     0.959
imin            0.767     0.767     0.767
imax            1.142     1.142     1.143
excite_mean     0.200     0.200     0.200
fracstop        1.000     1.000     1.000
cjmean          3.159     3.159     3.159

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       125.5     125.5     125.6
kozaiamp        180.0     180.0     179.9