Orbit Fit and Astrometric record for 02CA225

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: 02CA225   
# Created Tue Dec 19 02:37:10 2017
# Orbit generated from Bernstein formalism
# Fitting    6 observations of    6
# Arc:  34.00d
# First observation: 2002/02/07
#  Last observation: 2002/03/13
Preliminary a, adot, b, bdot, g, gdot:
   0.000000   0.036826  -0.000001  -0.002169   0.027080   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit:     2.70 DOF:    7 RMS:  0.12
# Min/Max residuals:    -0.19    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.602107E-05  2.479902E-02 -1.808037E-06 -2.192362E-03  2.518752E-02  3.108383E-03
# Covariance matrix:
  3.1701E-11  5.7820E-08 -4.6795E-13  1.5103E-10  8.7097E-09 -3.1564E-07
  5.7820E-08  1.0742E-04 -8.7060E-10  2.8167E-07  1.6169E-05 -5.9201E-04
 -4.6795E-13 -8.7060E-10  5.0789E-13 -8.2201E-12 -1.3099E-10  4.8281E-09
  1.5103E-10  2.8167E-07 -8.2201E-12  8.8126E-10  4.2350E-08 -1.5780E-06
  8.7097E-09  1.6169E-05 -1.3099E-10  4.2350E-08  2.4342E-06 -8.8866E-05
 -3.1564E-07 -5.9201E-04  4.8281E-09 -1.5780E-06 -8.8866E-05  3.3937E-03
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.779554  147.296267    0.148561    0.013148   -0.972209  2452312.811233
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:           70.61980 +/-   121.704
Argument of Peri:       86.62691 +/-    21.011
Long of Asc Node:      335.65522 +/-     3.461
Inclination:             5.08933 +/-     2.043
Eccentricity:         0.12526876 +/-    2.2693
Semi-Major Axis:     41.79751806 +/-    4.9175
Time of Perihelion: 2432948.5923 +/-   33192.2
Perihelion:          36.56159463 +/-   94.9505
Aphelion:            47.03344150 +/-   95.0143
Period (y)              270.2302 +/-     47.69
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.14236057 +/-    2.0691
Ecliptic Y           22.10429618 +/-    1.3288
Ecliptic Z            0.54009748 +/-    0.0335
Ecliptic XDOT        -0.00175195 +/-    0.0048
Ecliptic YDOT        -0.00208470 +/-    0.0042
Ecliptic ZDOT        -0.00023347 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   40.67668128 +/-    1.8809
Geocenter to KBO     39.70219859 +/-    2.4593
# Hcoef:  7.18

The following table shows the complete astrometric record for 02CA225. 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 (02CA225) followed by the observatory code and reference code for the source of the astrometry.

2002 02  07.31049  09 59 05.31   +13 08 34.3   23.1R 02CA225   695  Cf0409      
2002 02  08.22033  09 59 00.89   +13 08 56.7         02CA225   695  Cf0409      
2002 02  08.31382  09 59 00.42   +13 08 59.3         02CA225   695  Cf0409      
2002 03  09.30762  09 56 40.07   +13 20 44.4   22.7R 02CA225   568  Cf2752      
2002 03  09.36872  09 56 39.77   +13 20 45.7         02CA225   568  Cf2752      
2002 03  13.31383  09 56 22.19   +13 22 12.1         02CA225   696  Cf5586      

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    -0.09       0.00     0.09
  2   0.0025    -68.33     0.14      -1.15    -0.13
  3   0.0027    -75.67    -0.04      -1.07     0.07
  4   0.0821  -2242.53     0.10     -40.60    -0.04
  5   0.0823  -2247.09    -0.12     -40.87    -0.19
  6   0.0931  -2517.78     0.02     -47.23     0.21

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.

02CA225    quality flag:0

Type:      ERR2LARGE ERR2LARGE ERR2LARGE

axisobj         0.000     0.000     0.000
ecceobj        -1.000    -1.000    -1.000
incobj         -1.000    -1.000    -1.000
qmin            0.000     0.000     0.000
qmax            0.000     0.000     0.000
amean           0.000     0.000     0.000
amin            0.000     0.000     0.000
amax            0.000     0.000     0.000
emean           0.000     0.000     0.000
emin            0.000     0.000     0.000
emax            0.000     0.000     0.000
imean           0.000     0.000     0.000
imin            0.000     0.000     0.000
imax            0.000     0.000     0.000
excite_mean     0.000     0.000     0.000
fracstop        0.000     0.000     0.000
cjmean          0.000     0.000     0.000

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         0.0       0.0       0.0
kozaiamp          0.0       0.0       0.0