Orbit Fit and Astrometric record for 02CZ224

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: 02CZ224   
# Created Tue Dec 12 02:37:14 2017
# Orbit generated from Bernstein formalism
# Fitting   29 observations of   31
# Arc:  11.10y
# First observation: 2002/02/07
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000466   0.019015  -0.000010   0.000212   0.020909   0.000000
# Chi-squared of fit:    56.16 DOF:   52 RMS:  0.25
# Min/Max residuals:    -0.54    0.51
# Exact a, adot, b, bdot, g, gdot:
  1.569208E-05  1.891871E-02 -1.775635E-06  2.097380E-04  2.142561E-02  3.672696E-04
# Covariance matrix:
  2.6916E-13 -1.0303E-13  1.8384E-15 -8.8963E-16  6.4370E-14 -4.0887E-13
 -1.0303E-13  5.4211E-14 -1.0366E-15  5.2968E-16 -2.4282E-14  2.4092E-13
  1.8384E-15 -1.0366E-15  1.2811E-13 -2.1095E-14  1.3123E-15 -5.2040E-15
 -8.8963E-16  5.2968E-16 -2.1095E-14  5.7550E-15 -2.0981E-16  2.6296E-15
  6.4370E-14 -2.4282E-14  1.3123E-15 -2.0981E-16  2.2780E-13 -1.3458E-13
 -4.0887E-13  2.4092E-13 -5.2040E-15  2.6296E-15 -1.3458E-13  1.1986E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.596793  134.367977   -0.071067    0.027259   -0.980601  2452312.716373
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:          155.28025 +/-     0.074
Argument of Peri:      270.06593 +/-     0.069
Long of Asc Node:       66.50468 +/-     0.007
Inclination:             1.68713 +/-     0.000
Eccentricity:         0.05784740 +/-    0.0001
Semi-Major Axis:     45.25428760 +/-    0.0041
Time of Perihelion: 2404348.0085 +/-      21.9
Perihelion:          42.63644474 +/-    0.0046
Aphelion:            47.87213045 +/-    0.0050
Period (y)              304.4373 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -33.36021605 +/-    0.0007
Ecliptic Y           34.00858406 +/-    0.0007
Ecliptic Z            1.30049749 +/-    0.0000
Ecliptic XDOT        -0.00176897 +/-    0.0000
Ecliptic YDOT        -0.00165817 +/-    0.0000
Ecliptic ZDOT         0.00002831 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.65688930 +/-    0.0007
Geocenter to KBO     46.67310669 +/-    0.0010
# Hcoef:  7.14

The following table shows the complete astrometric record for 02CZ224. 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 (02CZ224) followed by the observatory code and reference code for the source of the astrometry.

2002 02  07.21563  09 09 17.06   +18 02 52.5   22.9R 02CZ224   695  Cf0409      
2002 02  08.18356  09 09 12.75   +18 03 10.4         02CZ224   695  Cf0409      
2002 02  08.27432  09 09 12.36   +18 03 12.3         02CZ224   695  Cf0409      
2002 03  08.34630  09 07 16.63   +18 11 19.0   22.9R 02CZ224   568  Cf2752      
2002 03  08.43474  09 07 16.30   +18 11 20.0         02CZ224   568  Cf2752      
2002 03  13.37748  09 06 59.12   +18 12 28.6         02CZ224   696  Cf5586      
2005 02  10.31228  09 22 07.40   +17 07 16.1   23.9g 02CZ224   568  C~0VDX      
2005 02  10.39529  09 22 07.03   +17 07 17.8   24.3g 02CZ224   568  C~0VDX      
2005 02  10.43481  09 22 06.85   +17 07 18.7   24.3g 02CZ224   568  C~0VDX      
2005 02  15.33591  09 21 45.44   +17 08 57.0   23.5g 02CZ224   568  C~0VDX      
2005 03  09.24738  09 20 16.32   +17 15 32.4   23.2R 02CZ224   695  Cn3092      
2005 03  09.33718  09 20 15.98   +17 15 34.3         02CZ224   695  Cn3092      
2005 03  10.24763  09 20 12.67   +17 15 48.4         02CZ224   695  Cn3092      
2005 04  11.14899  09 18 47.55   +17 21 29.0   23.2R 02CZ224   695  Cn3092      
2005 04  12.14827  09 18 46.05   +17 21 34.0         02CZ224   695  Cn3092      
2005 04  12.26135  09 18 45.91   +17 21 35.4   24.7i 02CZ224   568  C~0VDX      
2005 04  12.36980  09 18 45.74   +17 21 36.1   24.0i 02CZ224   568  C~0VDX      
2005 04  13.14863  09 18 44.59   +17 21 38.3         02CZ224   695  Cn3092      
2006 01  11.35083  09 28 33.06   +16 37 26.0   23.3R 02CZ224   250  S~06AT      
2006 01  11.35522  09 28 33.04   +16 37 26.1         02CZ224   250  S~06AT      
2006 01  11.35962  09 28 33.02   +16 37 26.2         02CZ224   250  S~06AT      
2006 01  11.36402  09 28 33.01   +16 37 26.2         02CZ224   250  S~06AT      
2006 02  03.47735  09 26 57.62   +16 45 15.6         02CZ224   568  C~0VDX      
2006 02  06.32831  09 26 45.17   +16 46 15.5   23.1r 02CZ224   568  C~0VDX      
2006 02  06.36908  09 26 44.99   +16 46 16.2   23.3r 02CZ224   568  C~0VDX      
2006 02  06.40731  09 26 44.85   +16 46 17.1   23.8r 02CZ224   568  C~0VDX      
2006 11  23.50414  09 34 33.23   +16 07 33.6         02CZ224   695  C~0VDX      
2006 11  24.50685  09 34 32.97   +16 07 37.1         02CZ224   695  C~0VDX      
2013 03  13.23507  09 54 00.49   +14 33 40.6   23.5R 02CZ224   695  C~0ucs      
2013 03  14.18899  09 53 56.92   +14 33 58.2         02CZ224   695  C~0ucs      
2013 03  14.34016  09 53 56.35   +14 34 01.2         02CZ224   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    -0.36       0.00     0.40
  2   0.0027    -64.02    -0.32      -0.86    -0.44
  3   0.0029    -69.89    -0.11      -0.67    -0.24
  4   0.0798  -1790.01     0.15     -15.49     0.28
  5   0.0800  -1794.80     0.17     -15.90    -0.00
  6   0.0935  -2049.01     0.43     -21.17     0.20
  7   3.0092  11520.30     0.04     130.41     0.21
  8   3.0094  11514.71     0.05     130.39     0.21
  9   3.0095  11511.97    -0.03     130.45     0.29
 10   3.0229  11188.75     0.02     129.29     0.23
 11   3.0829   9848.56     0.06     113.05    -0.32
 12   3.0832   9843.33    -0.15     113.36     0.13
 13   3.0856   9793.76    -0.03     112.26    -0.01
 14   3.1730   8526.52    -0.16      64.17    -0.08
 15   3.1757   8504.50     0.00      62.39    -0.05
 16   3.1760   8502.17 (   0.10)     63.11 (   0.84)
 17   3.1763   8499.63 (  -0.01)     63.03 (   1.01)
 18   3.1785   8483.25    -0.25      60.11    -0.49
 19   3.9264  17367.21     0.50     160.62    -0.05
 20   3.9265  17366.90     0.45     160.62    -0.05
 21   3.9265  17366.60     0.39     160.62    -0.05
 22   3.9265  17366.46     0.51     160.58    -0.10
 23   3.9898  15908.36    -0.25     173.62    -0.40
 24   3.9976  15718.67    -0.26     174.25    -0.03
 25   3.9977  15715.98    -0.19     174.10    -0.17
 26   3.9978  15713.77     0.19     174.33     0.06
 27   4.7920  22904.18    -0.37     120.73     0.23
 28   4.7948  22899.44    -0.54     122.85     0.15
 29  11.0938  41139.19    -0.01     461.06     0.05
 30  11.0964  41082.30     0.04     459.68    -0.09
 31  11.0969  41073.15     0.00     459.64     0.13

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.

02CZ224    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.996    45.008    44.984
ecceobj         0.064     0.064     0.064
incobj          1.686     1.686     1.686
qmin           41.422    41.487    41.412
qmax           48.857    48.847    48.840
amean          45.032    45.044    45.021
amin           44.666    44.689    44.670
amax           45.410    45.417    45.401
emean           0.063     0.063     0.063
emin            0.048     0.048     0.048
emax            0.076     0.076     0.076
imean           0.788     0.788     0.788
imin            0.180     0.185     0.176
imax            1.210     1.209     1.209
excite_mean     0.064     0.064     0.065
fracstop        1.000     1.000     1.000
cjmean          3.109     3.109     3.109

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       203.9     204.0     203.8
kozaiamp        180.0     179.9     180.0