Orbit Fit and Astrometric record for 02CO154

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: 02CO154   
# Created Tue Dec 12 02:37:14 2017
# Orbit generated from Bernstein formalism
# Fitting    9 observations of    9
# Arc:  37.02d
# First observation: 2002/02/06
#  Last observation: 2002/03/15
Preliminary a, adot, b, bdot, g, gdot:
   0.000001   0.030256   0.000001   0.001287   0.025103   0.000000
# WARNING MRQMIN stopped after  13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit:    29.03 DOF:   13 RMS:  0.32
# Min/Max residuals:    -0.45    0.87
# Exact a, adot, b, bdot, g, gdot:
  1.604370E-05  2.330980E-02  1.399677E-06  1.282442E-03  2.401305E-02 -4.748161E-03
# Covariance matrix:
  1.4970E-12  1.5958E-09 -1.8709E-17  2.7759E-13  2.3815E-10 -1.7365E-08
  1.5958E-09  2.5943E-06  1.9498E-13  2.7353E-10  3.8308E-07 -2.9599E-05
 -1.8709E-17  1.9498E-13  4.8648E-13 -5.2181E-12  1.8073E-14 -7.7767E-12
  2.7759E-13  2.7353E-10 -5.2181E-12  8.4991E-11  4.8781E-11  1.2250E-09
  2.3815E-10  3.8308E-07  1.8073E-14  4.8781E-11  5.6703E-08 -4.3012E-06
 -1.7365E-08 -2.9599E-05 -7.7767E-12  1.2250E-09 -4.3012E-06  3.7369E-04
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.240809  135.503142   -0.033982    0.004055   -0.982698  2452311.704643
# Heliocentric elements and errors
Epoch:              2452310.5000  =  2002/02/05
Mean Anomaly:          300.08607 +/-    65.678
Argument of Peri:       87.10369 +/-     8.917
Long of Asc Node:      131.26686 +/-     0.302
Inclination:             3.15265 +/-     0.222
Eccentricity:         0.20687898 +/-    0.8618
Semi-Major Axis:     45.68727378 +/-   21.4161
Time of Perihelion: 2471082.7604 +/-   15787.5
Perihelion:          36.23553719 +/-   42.8797
Aphelion:            55.13901036 +/-   47.0979
Period (y)              308.8169 +/-    217.14
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.42796315 +/-    0.2945
Ecliptic Y           29.85640078 +/-    0.2895
Ecliptic Z            0.17508502 +/-    0.0017
Ecliptic XDOT        -0.00148460 +/-    0.0015
Ecliptic YDOT        -0.00227622 +/-    0.0016
Ecliptic ZDOT         0.00014416 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.62975796 +/-    0.2920
Geocenter to KBO     41.64402007 +/-    0.4130
# Hcoef:  6.55

The following table shows the complete astrometric record for 02CO154. 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 (02CO154) followed by the observatory code and reference code for the source of the astrometry.

2002 02  06.20390  09 12 09.42   +16 25 05.0   23.0R 02CO154   695  Cf0336      
2002 02  06.29277  09 12 08.99   +16 25 06.8         02CO154   695  Cf0336      
2002 02  07.21956  09 12 04.53   +16 25 28.1         02CO154   695  Cf0336      
2002 03  08.42300  09 09 52.53   +16 35 31.5   22.1R 02CO154   568  Cf2717      
2002 03  08.48527  09 09 52.33   +16 35 32.2         02CO154   568  Cf2717      
2002 03  13.29216  09 09 33.99   +16 36 55.2         02CO154   696  Cf5529      
2002 03  13.37979  09 09 33.66   +16 36 56.6         02CO154   696  Cf5529      
2002 03  15.16343  09 09 27.24   +16 37 26.1   22.4R 02CO154   662  Cf2717      
2002 03  15.22242  09 09 27.04   +16 37 28.1         02CO154   662  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    -0.14       0.00    -0.11
  2   0.0002     -6.44     0.01      -0.11    -0.27
  3   0.0028    -74.04     0.14       1.26     0.42
  4   0.0827  -2066.00    -0.45      19.05     0.13
  5   0.0829  -2068.96     0.36      18.87    -0.04
  6   0.0961  -2345.36     0.13      21.02    -0.38
  7   0.0963  -2350.31     0.09      20.97    -0.43
  8   0.1012  -2447.19    -0.01      22.17    -0.19
  9   0.1014  -2450.53    -0.13      23.24     0.87

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.

02CO154    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