Orbit Fit and Astrometric record for 02CZ248

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: 02CZ248   
# Created Tue Dec 12 02:37:14 2017
# Orbit generated from Bernstein formalism
# Fitting   23 observations of   24
# Arc:  11.10y
# First observation: 2002/02/06
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
   0.002107   0.032807   0.000204   0.003130   0.028504   0.000000
# Chi-squared of fit:    20.09 DOF:   40 RMS:  0.17
# Min/Max residuals:    -0.49    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.886843E-05  3.459775E-02  4.698822E-07  3.302582E-03  2.910133E-02  7.447136E-03
# Covariance matrix:
  3.6586E-13 -1.2866E-13  1.7707E-14 -1.0075E-14  5.8441E-14 -2.8456E-13
 -1.2866E-13  6.3774E-14 -1.0013E-14  5.6967E-15 -1.5712E-14  1.6060E-13
  1.7707E-14 -1.0013E-14  1.8990E-13 -2.9914E-14  4.3786E-15 -2.8424E-14
 -1.0075E-14  5.6967E-15 -2.9914E-14  7.4741E-15 -2.4977E-15  1.6172E-14
  5.8441E-14 -1.5712E-14  4.3786E-15 -2.4977E-15  3.4893E-13 -7.6491E-14
 -2.8456E-13  1.6060E-13 -2.8424E-14  1.6172E-14 -7.6491E-14  4.5648E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.364243  131.309303   -0.105178   -0.006290   -0.977619  2452311.671653
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:           18.90640 +/-     0.005
Argument of Peri:      311.37967 +/-     0.006
Long of Asc Node:      135.18108 +/-     0.000
Inclination:             5.45935 +/-     0.000
Eccentricity:         0.39626496 +/-    0.0001
Semi-Major Axis:     53.69705418 +/-    0.0083
Time of Perihelion: 2444762.5232 +/-       0.9
Perihelion:          32.41879312 +/-    0.0065
Aphelion:            74.97531523 +/-    0.0123
Period (y)              393.4902 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -23.40679199 +/-    0.0005
Ecliptic Y           26.48132866 +/-    0.0005
Ecliptic Z           -0.21843270 +/-    0.0000
Ecliptic XDOT        -0.00291728 +/-    0.0000
Ecliptic YDOT        -0.00162160 +/-    0.0000
Ecliptic ZDOT         0.00030646 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.34383103 +/-    0.0005
Geocenter to KBO     34.36269161 +/-    0.0007
# Hcoef:  8.29

The following table shows the complete astrometric record for 02CZ248. 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 (02CZ248) followed by the observatory code and reference code for the source of the astrometry.

2002 02  06.17091  08 54 38.84   +17 02 05.7   22.7R 02CZ248   695  Cf2784      
2002 02  06.26085  08 54 38.31   +17 02 08.1         02CZ248   695  Cf2784      
2002 02  07.19196  08 54 33.08   +17 02 30.8         02CZ248   695  Cf2784      
2002 03  08.33434  08 52 04.78   +17 13 37.8   22.6R 02CZ248   568  Cf2784      
2002 03  08.41149  08 52 04.39   +17 13 39.2         02CZ248   568  Cf2784      
2005 02  10.31064  09 18 10.53   +15 54 56.4   23.9g 02CZ248   568  C~0Wz6      
2005 02  10.39362  09 18 10.07   +15 54 58.6   23.9g 02CZ248   568  C~0Wz6      
2005 02  10.43316  09 18 09.85   +15 54 59.6   24.1g 02CZ248   568  C~0Wz6      
2005 04  12.25869  09 14 09.04   +16 14 52.8   23.9i 02CZ248   568  C~0Wz6      
2005 04  12.33944  09 14 08.92   +16 14 53.5   24.5i 02CZ248   568  C~0Wz6      
2005 04  12.36705  09 14 08.87   +16 14 53.7   24.0i 02CZ248   568  C~0Wz6      
2006 02  03.47935  09 26 28.57   +15 27 19.1         02CZ248   568  C85019      
2006 02  06.33077  09 26 13.16   +15 28 37.0   23.0r 02CZ248   568  C85019      
2006 02  06.37156  09 26 12.95   +15 28 38.6   22.8r 02CZ248   568  C85019      
2006 02  06.40970  09 26 12.73   +15 28 39.5   23.4r 02CZ248   568  C85019      
2006 11  23.53862  09 37 48.70   +14 40 30.9         02CZ248   695  C~0Wz6      
2006 11  25.48772  09 37 48.73   +14 40 36.2         02CZ248   695  C~0Wz6      
2007 02  14.48383  09 33 00.64   +15 07 21.4   23.3r 02CZ248   568  C~0Wz6      
2007 02  14.51775  09 33 00.45   +15 07 22.2   23.5r 02CZ248   568  C~0Wz6      
2007 02  14.55049  09 33 00.27   +15 07 23.2   23.6r 02CZ248   568  C~0Wz6      
2007 02  15.49488  09 32 55.24   +15 07 49.3   23.3r 02CZ248   568  C~0Wz6      
2013 03  13.25556  10 12 37.61   +12 43 25.1   23.9R 02CZ248   695  C~0ucs      
2013 03  14.21369  10 12 33.25   +12 43 49.7         02CZ248   695  C~0ucs      
2013 03  14.36419  10 12 32.56   +12 43 53.7         02CZ248   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    -0.01       0.00     0.27
  2   0.0002     -7.97    -0.26       0.22     0.33
  3   0.0028    -86.32     0.05       1.45    -0.24
  4   0.0826  -2313.53 (   0.87)     62.81 (   0.27)
  5   0.0828  -2319.29     0.17      62.64    -0.03
  6   3.0120  20672.76     0.15    2012.85     0.08
  7   3.0122  20665.70     0.18    2012.94     0.04
  8   3.0124  20662.34     0.20    2012.93    -0.02
  9   3.1789  16962.68    -0.15    2107.65     0.12
 10   3.1791  16960.81    -0.08    2107.81     0.20
 11   3.1792  16960.06    -0.17    2107.78     0.15
 12   3.9926  28131.01    -0.24    2654.74     0.10
 13   4.0004  27890.68     0.03    2659.16    -0.49
 14   4.0005  27887.23     0.08    2659.74     0.02
 15   4.0007  27883.87    -0.00    2659.60    -0.17
 16   4.7950  38635.42    -0.11    3142.03    -0.09
 17   4.8003  38634.07    -0.10    3147.27     0.12
 18   5.0221  34024.54     0.10    3321.46    -0.10
 19   5.0222  34021.60     0.06    3321.34    -0.25
 20   5.0223  34018.73    -0.00    3321.45    -0.17
 21   5.0248  33939.27     0.15    3322.87    -0.23
 22  11.0967  71943.78    -0.14    7183.92     0.21
 23  11.0994  71867.06     0.04    7183.61     0.00
 24  11.0998  71854.88     0.07    7183.67     0.16

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.

02CZ248    quality flag:3

Type:        7:3EEEE   7:3EEEE   7:3EEEE

axisobj        53.278    53.302    53.253
ecceobj         0.393     0.393     0.393
incobj          5.470     5.470     5.470
qmin           31.910    31.912    31.905
qmax           75.237    75.284    75.231
amean          52.969    52.969    52.969
amin           52.285    52.270    52.318
amax           53.853    53.835    53.795
emean           0.387     0.387     0.387
emin            0.376     0.376     0.377
emax            0.398     0.399     0.398
imean           4.092     4.087     4.053
imin            3.871     3.805     3.786
imax            4.426     4.365     4.366
excite_mean     0.393     0.393     0.393
fracstop        1.000     1.000     1.000
cjmean          3.008     3.008     3.008

libcent 0       180.0     180.1     179.4
libamp  0        87.6     104.5      75.5
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       187.0     204.9     179.8
kozaiamp        180.0     180.0     180.0