Orbit Fit and Astrometric record for 02CR154

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: 02CR154   
# Created Mon Dec 11 02:37:13 2017
# Orbit generated from Bernstein formalism
# Fitting    5 observations of    5
# Arc:  31.07d
# First observation: 2002/02/06
#  Last observation: 2002/03/09
Preliminary a, adot, b, bdot, g, gdot:
  -0.000001   0.033717  -0.000000   0.001139   0.025714   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit:     1.59 DOF:    5 RMS:  0.10
# Min/Max residuals:    -0.20    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.616469E-05  2.550621E-02  5.352132E-07  1.178161E-03  2.437740E-02 -1.535401E-03
# Covariance matrix:
  1.9075E-11  2.9940E-08 -6.0016E-13 -1.4401E-10  4.8506E-09  3.8734E-08
  2.9940E-08  4.8380E-05 -9.6774E-10 -2.3344E-07  7.8247E-06  5.5728E-05
 -6.0016E-13 -9.6774E-10  5.1390E-13 -1.2502E-12 -1.5670E-10 -1.2227E-09
 -1.4401E-10 -2.3344E-07 -1.2502E-12  1.3051E-09 -3.7677E-08 -2.2388E-07
  4.8506E-09  7.8247E-06 -1.5670E-10 -3.7677E-08  1.2667E-06  9.6997E-06
  3.8734E-08  5.5728E-05 -1.2227E-09 -2.2388E-07  9.6997E-06  4.6069E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.588883  156.969265    0.325565    0.058000   -0.926067  2452311.851783
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:          343.28717 +/-   203.271
Argument of Peri:       77.33858 +/-   301.138
Long of Asc Node:      103.71783 +/-     8.038
Inclination:             4.40273 +/-     0.470
Eccentricity:         0.18443536 +/-    0.4692
Semi-Major Axis:     50.71808924 +/-   25.1400
Time of Perihelion: 2458435.2755 +/-   74353.8
Perihelion:          41.36388035 +/-   31.4119
Aphelion:            60.07229812 +/-   38.1179
Period (y)              361.2040 +/-    268.56
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -38.40352636 +/-    1.7395
Ecliptic Y           16.68478433 +/-    0.7396
Ecliptic Z            2.56785487 +/-    0.1186
Ecliptic XDOT        -0.00096320 +/-    0.0023
Ecliptic YDOT        -0.00270756 +/-    0.0009
Ecliptic ZDOT         0.00012148 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   41.95005058 +/-    1.6194
Geocenter to KBO     41.02159826 +/-    1.8939
# Hcoef:  7.09

The following table shows the complete astrometric record for 02CR154. 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 (02CR154) followed by the observatory code and reference code for the source of the astrometry.

2002 02  06.35104  10 40 12.76   +12 17 00.1   23.1R 02CR154   695  Cf0336      
2002 02  06.44639  10 40 12.33   +12 17 02.6         02CR154   695  Cf0336      
2002 02  07.43437  10 40 08.15   +12 17 30.4         02CR154   695  Cf0336      
2002 03  09.34221  10 37 52.86   +12 31 22.8   22.8R 02CR154   568  Cf2717      
2002 03  09.42213  10 37 52.49   +12 31 24.8         02CR154   568  Cf2717      

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     0.08       0.00     0.05
  2   0.0003     -6.78    -0.13      -0.04    -0.20
  3   0.0030    -74.00     0.05       2.78     0.15
  4   0.0848  -2223.51    -0.00      34.44     0.05
  5   0.0851  -2229.28     0.00      34.28    -0.05

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.

02CR154    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