Orbit Fit and Astrometric record for 02CS154

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: 02CS154   
# Created Fri Oct 19 01:08:04 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   21 observations of   21
# Arc:  16.17y
# First observation: 2002/02/06
#  Last observation: 2018/04/10
# Chi-squared of fit:    46.65 DOF:   36 RMS:  0.26
# Min/Max residuals:    -0.54    0.77
# Exact a, adot, b, bdot, g, gdot:
  1.536660E-05  2.360728E-02 -1.319370E-06  1.358923E-04  2.418080E-02 -8.466472E-04
# Covariance matrix:
  3.9106E-13 -5.5312E-14 -1.8503E-16 -3.3568E-16  5.1752E-13 -1.7673E-13
 -5.5312E-14  5.2948E-14 -1.8419E-16  3.1738E-16 -2.3547E-14  1.5950E-13
 -1.8503E-16 -1.8419E-16  1.2266E-13 -1.0125E-14 -6.7235E-16 -5.2221E-16
 -3.3568E-16  3.1738E-16 -1.0125E-14  1.9610E-15 -2.6490E-16  1.0012E-15
  5.1752E-13 -2.3547E-14 -6.7235E-16 -2.6490E-16  1.0910E-12 -1.5059E-13
 -1.7673E-13  1.5950E-13 -5.2221E-16  1.0012E-15 -1.5059E-13  5.0441E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.152746  160.753436    0.385837    0.018112   -0.904303  2452311.867653
# Heliocentric elements and errors
Epoch:              2452312.5000  =  2002/02/07
Mean Anomaly:          302.23626 +/-     0.129
Argument of Peri:      135.83401 +/-     0.145
Long of Asc Node:       87.01539 +/-     0.005
Inclination:             1.17817 +/-     0.000
Eccentricity:         0.04854406 +/-    0.0001
Semi-Major Axis:     43.30737681 +/-    0.0078
Time of Perihelion: 2469015.4827 +/-      44.1
Perihelion:          41.20506100 +/-    0.0079
Aphelion:            45.40969262 +/-    0.0086
Period (y)              285.0040 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -39.76156072 +/-    0.0017
Ecliptic Y           14.29669088 +/-    0.0006
Ecliptic Z            0.83193208 +/-    0.0000
Ecliptic XDOT        -0.00079881 +/-    0.0000
Ecliptic YDOT        -0.00255590 +/-    0.0000
Ecliptic ZDOT         0.00001367 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.26193870 +/-    0.0016
Geocenter to KBO     41.35517612 +/-    0.0018
# Hcoef:  7.04

The following table shows the complete astrometric record for 02CS154. 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 (02CS154) followed by the observatory code and reference code for the source of the astrometry.

2002 02  06.36691  10 50 43.06   +08 36 03.5   22.5R 02CS154   695  Cf0336      
2002 02  06.46381  10 50 42.65   +08 36 06.3         02CS154   695  Cf0336      
2002 02  08.46680  10 50 34.35   +08 36 58.3         02CS154   695  Cf0336      
2002 03  12.235388 10 48 11.98   +08 51 31.0   22.8V 02CS154   645  C~2Jx6      
2002 03  12.236217 10 48 11.98   +08 51 31.1   22.4V 02CS154   645  C~2Jx6      
2002 03  12.238705 10 48 11.98   +08 51 31.0   23.1V 02CS154   645  C~2Jx6      
2002 03  15.30630  10 47 58.32   +08 52 53.5   23.4R 02CS154   662  Cf2717      
2002 03  15.37741  10 47 57.95   +08 52 54.5         02CS154   662  Cf2717      
2003 03  30.21411  10 52 02.05   +08 28 33.5   23.0R 02CS154   695  Ch8254      
2003 03  30.30970  10 52 01.68   +08 28 35.8         02CS154   695  Ch8254      
2003 03  31.20634  10 51 58.14   +08 28 56.6         02CS154   695  Ch8254      
2004 02  22.34411  10 59 46.98   +07 41 30.7   23.4R 02CS154   695  Ck0860      
2004 02  22.39589  10 59 46.75   +07 41 32.2         02CS154   695  Ck0860      
2013 03  12.25518  11 44 07.78   +03 01 56.0   22.7R 02CS154   695  C~0ucs      
2013 03  12.30559  11 44 07.54   +03 01 57.2         02CS154   695  C~0ucs      
2013 03  13.27792  11 44 03.16   +03 02 26.1         02CS154   695  C~0ucs      
2015 03  23.18333  11 53 33.37   +02 00 48.1   23.3R 02CS154   695  C~1Q3B      
2015 03  23.24690  11 53 33.10   +02 00 49.9         02CS154   695  C~1Q3B      
2015 03  23.30617  11 53 32.82   +02 00 51.6         02CS154   695  C~1Q3B      
2018 04  10.18050  12 07 35.376  +00 29 12.37  23.6R 02CS154   G37  C~2bGQ      
2018 04  10.23253  12 07 35.135  +00 29 12.85        02CS154   G37  C~2bGQ      

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     0.17       0.00     0.24
  2   0.0003      0.00     0.10       0.00     0.54
  3   0.0057      0.00     0.30       0.00     0.30
  4   0.0927      0.00    -0.10       0.00    -0.21
  5   0.0927      0.00    -0.04       0.00    -0.13
  6   0.0927      0.00     0.13       0.00    -0.29
  7   0.1011      0.00     0.22       0.00     0.37
  8   0.1013      0.00    -0.54       0.00    -0.51
  9   1.1413      0.00     0.06       0.00    -0.01
 10   1.1415      0.00     0.29       0.00     0.06
 11   1.1440      0.00     0.04       0.00     0.02
 12   2.0424      0.00    -0.03       0.00    -0.27
 13   2.0425      0.00     0.05       0.00    -0.22
 14  11.0935      0.00     0.14       0.00    -0.01
 15  11.0936      0.00     0.01       0.00    -0.29
 16  11.0963      0.00     0.06       0.00     0.07
 17  13.1220      0.00    -0.31       0.00    -0.17
 18  13.1222      0.00    -0.00       0.00    -0.23
 19  13.1224      0.00    -0.13       0.00    -0.25
 20  16.1720      0.00     0.39       0.00     0.77
 21  16.1721      0.00     0.15       0.00    -0.16

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.

02CS154    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.015    43.015    43.015
ecceobj         0.046     0.046     0.046
incobj          1.178     1.178     1.178
qmin           40.487    40.476    40.480
qmax           46.143    46.150    46.125
amean          43.200    43.199    43.200
amin           42.864    42.866    42.867
amax           43.557    43.557    43.546
emean           0.040     0.040     0.040
emin            0.021     0.021     0.021
emax            0.059     0.060     0.060
imean           1.114     1.114     1.114
imin            0.071     0.071     0.071
imax            1.695     1.695     1.695
excite_mean     0.045     0.045     0.045
fracstop        1.000     1.000     1.000
cjmean          3.090     3.090     3.090

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       168.4     168.4     168.5
kozaiamp        180.0     180.0     180.0