Orbit Fit and Astrometric record for 02PG153

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: 02PG153   
# Created Fri Dec 15 02:37:11 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    5 observations of    5
# Arc:   2.33d
# First observation: 2002/08/13
#  Last observation: 2002/08/15
# Chi-squared of fit:    33.80 DOF:    4 RMS:  0.46
# Min/Max residuals:    -0.76    0.82
# Exact a, adot, b, bdot, g, gdot:
  1.405617E-05  2.490746E-02  2.838848E-07  3.972908E-04  2.475231E-02 -2.365255E-05
# Covariance matrix:
  5.4053E-11  6.1176E-07 -3.1785E-14  1.0647E-09  1.0087E-07  4.0927E-10
  6.1176E-07  7.0260E-03 -3.6496E-10  1.2225E-05  1.1582E-03 -1.7281E-05
 -3.1785E-14 -3.6496E-10  7.6393E-13 -1.3171E-10 -6.0165E-11 -7.3524E-12
  1.0647E-09  1.2225E-05 -1.3171E-10  5.7855E-08  2.0153E-06 -3.7620E-09
  1.0087E-07  1.1582E-03 -6.0165E-11  2.0153E-06  1.9094E-04 -1.4570E-06
  4.0927E-10 -1.7281E-05 -7.3524E-12 -3.7620E-09 -1.4570E-06  1.0925E-02
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.511129  -50.511417   -0.183126    0.008893   -1.000172  2452499.518433
# Heliocentric elements and errors
Epoch:              2452500.5000  =  2002/08/14
Mean Anomaly:            2.40922 +/-   159.137
Argument of Peri:       25.79837 +/-     8.753
Long of Asc Node:      281.25588 +/-     1.745
Inclination:             1.04564 +/-     0.006
Eccentricity:         0.05625500 +/-    0.2060
Semi-Major Axis:     43.86161412 +/-    0.0347
Time of Perihelion: 2451790.4321 +/-   46902.3
Perihelion:          41.39417911 +/-    9.0348
Aphelion:            46.32904913 +/-    9.0349
Period (y)              290.4926 +/-      0.34
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           26.46801683 +/-    0.2514
Ecliptic Y          -31.82757327 +/-    0.3051
Ecliptic Z            0.36040903 +/-    0.0035
Ecliptic XDOT         0.00211653 +/-    0.0010
Ecliptic YDOT         0.00175166 +/-    0.0012
Ecliptic ZDOT         0.00004413 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.39661939 +/-    0.2831
Geocenter to KBO     40.40030434 +/-    0.3954
# Hcoef:  9.11

The following table shows the complete astrometric record for 02PG153. 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 (02PG153) followed by the observatory code and reference code for the source of the astrometry.

2002 08  13.01769  20 47 08.41   -17 23 05.4         02PG153   807  Cg3360      
2002 08  13.17629  20 47 07.58   -17 23 08.6         02PG153   807  Cg3360      
2002 08  15.04597  20 46 58.77   -17 23 43.3         02PG153   807  Cg3360      
2002 08  15.20558  20 46 57.96   -17 23 46.4   24.9R 02PG153   807  Cg3360      
2002 08  15.34750  20 46 57.22   -17 23 49.0         02PG153   807  Cg3360      

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    -0.20       0.00    -0.76
  2   0.0004      0.00    -0.46       0.00    -0.09
  3   0.0056      0.00     0.82       0.00     0.10
  4   0.0060      0.00     0.20       0.00    -0.02
  5   0.0064      0.00    -0.69       0.00    -0.02

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.

02PG153    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.153    44.153    44.153
ecceobj         0.062     0.062     0.062
incobj          1.042     1.042     1.042
qmin           40.746    40.746    40.746
qmax           47.733    47.741    47.717
amean          44.152    44.152    44.152
amin           43.798    43.797    43.798
amax           44.521    44.520    44.522
emean           0.058     0.058     0.058
emin            0.043     0.043     0.043
emax            0.073     0.073     0.073
imean           2.882     2.882     2.882
imin            2.205     2.205     2.205
imax            3.440     3.440     3.441
excite_mean     0.077     0.077     0.077
fracstop        1.000     1.000     1.000
cjmean          3.096     3.096     3.096

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       176.9     176.8     176.9
kozaiamp        180.0     180.0     180.0