Orbit Fit and Astrometric record for 02CQ154

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: 02CQ154   
# Created Tue Oct 17 01:37:15 2017
# Orbit generated from Bernstein formalism
# Fitting    9 observations of    9
# Arc:  41.96d
# First observation: 2002/02/06
#  Last observation: 2002/03/20
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.037981   0.000001   0.001248   0.026155   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit:    16.51 DOF:   13 RMS:  0.24
# Min/Max residuals:    -0.41    0.48
# Exact a, adot, b, bdot, g, gdot:
  1.548056E-05  2.245097E-02  1.672315E-06  1.247402E-03  2.367174E-02  4.554723E-03
# Covariance matrix:
  1.5110E-11  2.4592E-08 -1.8069E-13 -9.4771E-12  3.7577E-09 -9.0856E-08
  2.4592E-08  4.1432E-05 -3.0412E-10 -1.6155E-08  6.3265E-06 -1.5447E-04
 -1.8069E-13 -3.0412E-10  4.9221E-13 -4.5881E-12 -4.6453E-11  1.1268E-09
 -9.4771E-12 -1.6155E-08 -4.5881E-12  7.4837E-11 -2.4549E-09  6.5833E-08
  3.7577E-09  6.3265E-06 -4.6453E-11 -2.4549E-09  9.6623E-07 -2.3499E-05
 -9.0856E-08 -1.5447E-04  1.1268E-09  6.5833E-08 -2.3499E-05  6.1795E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.929131  155.876946    0.308013    0.015061   -0.933730  2452311.840043
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:           69.60028 +/-    27.427
Argument of Peri:      283.88997 +/-   118.422
Long of Asc Node:      139.53920 +/-     4.330
Inclination:             3.31039 +/-     0.875
Eccentricity:         0.19630000 +/-    1.0816
Semi-Major Axis:     44.59451536 +/-    5.5094
Time of Perihelion: 2431280.9942 +/-    7313.6
Perihelion:          35.84061218 +/-   48.4353
Aphelion:            53.34841853 +/-   48.6807
Period (y)              297.8039 +/-     55.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -39.27562334 +/-    1.6007
Ecliptic Y           17.93069674 +/-    0.7170
Ecliptic Z            0.68510161 +/-    0.0285
Ecliptic XDOT        -0.00154834 +/-    0.0024
Ecliptic YDOT        -0.00215626 +/-    0.0018
Ecliptic ZDOT         0.00015301 +/-    0.0001
# Distances at JD0 (AU)
Heliocenter to KBO   43.18047983 +/-    1.4861
Geocenter to KBO     42.24445761 +/-    1.7542
# Hcoef:  6.40

The following table shows the complete astrometric record for 02CQ154. 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 (02CQ154) followed by the observatory code and reference code for the source of the astrometry.

2002 02  06.33930  10 32 02.86   +10 13 11.7   22.4R 02CQ154   695  Cf0336      
2002 02  06.43463  10 32 02.45   +10 13 14.4         02CQ154   695  Cf0336      
2002 02  07.34349  10 31 58.62   +10 13 38.2         02CQ154   695  Cf0336      
2002 03  15.07305  10 29 19.90   +10 29 31.5         02CQ154   950  Cf2717      
2002 03  15.11090  10 29 19.73   +10 29 32.6         02CQ154   950  Cf2717      
2002 03  15.29130  10 29 18.95   +10 29 37.3   22.0R 02CQ154   662  Cf2717      
2002 03  15.36235  10 29 18.67   +10 29 38.7         02CQ154   662  Cf2717      
2002 03  18.27326  10 29 06.50   +10 30 50.8   22.8R 02CQ154   695  Ch1599      
2002 03  20.29641  10 28 58.16   +10 31 40.0         02CQ154   695  Ch1599      

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    -0.10       0.00    -0.17
  2   0.0003     -6.62    -0.16       0.28     0.03
  3   0.0027    -67.95     0.28       1.54     0.23
  4   0.1006  -2596.54     0.11      26.42    -0.26
  5   0.1007  -2599.28    -0.04      26.53    -0.15
  6   0.1012  -2611.70    -0.41      26.68    -0.07
  7   0.1014  -2616.06     0.09      26.46    -0.27
  8   0.1093  -2809.52     0.42      27.70     0.19
  9   0.1149  -2942.02    -0.19      28.37     0.48

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.

02CQ154    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