Orbit Fit and Astrometric record for 02PG150

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: 02PG150   
# Created Sun Dec  5 02:09:20 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     20 observations of     20
# Arc:  16.16y
# First observation: 2002/08/11
#  Last observation: 2018/10/10
# Chi-squared of fit:    29.22 DOF:     34 RMS:  0.21
# Min/Max residuals:    -0.59    0.62
# Exact a, adot, b, bdot, g, gdot:
  1.673350E-05  2.965157E-02  1.959035E-06  2.092292E-05  2.716811E-02  1.682958E-04
# Covariance matrix:
  4.8839E-13 -6.8708E-14 -3.5874E-17 -7.9270E-18 -2.4018E-14 -7.7112E-14
 -6.8708E-14  1.0385E-13 -1.1693E-15  3.1585E-17  2.3702E-13  1.9314E-13
 -3.5874E-17 -1.1693E-15  4.5974E-13 -3.1536E-14 -4.6834E-15 -2.0370E-15
 -7.9270E-18  3.1585E-17 -3.1536E-14  2.5633E-15  8.9257E-17  5.8710E-17
 -2.4018E-14  2.3702E-13 -4.6834E-15  8.9257E-17  8.1832E-13  4.2588E-13
 -7.7112E-14  1.9314E-13 -2.0370E-15  5.8710E-17  4.2588E-13  3.7088E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.676072  -12.775730    0.491627   -0.088083   -0.886149  2452497.903973
# Heliocentric elements and errors
Epoch:              2452498.5000  =  2002/08/12
Mean Anomaly:          356.51367 +/-     0.006
Argument of Peri:      274.19209 +/-     0.008
Long of Asc Node:       76.90563 +/-     0.001
Inclination:             5.54203 +/-     0.000
Eccentricity:         0.13452660 +/-    0.0001
Semi-Major Axis:     43.53840143 +/-    0.0061
Time of Perihelion: 2453514.6861 +/-      21.9
Perihelion:          37.68132847 +/-    0.0067
Aphelion:            49.39547439 +/-    0.0080
Period (y)              287.2876 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           36.48021733 +/-    0.0012
Ecliptic Y           -8.77014106 +/-    0.0003
Ecliptic Z           -3.64040667 +/-    0.0001
Ecliptic XDOT         0.00066969 +/-    0.0000
Ecliptic YDOT         0.00290774 +/-    0.0000
Ecliptic ZDOT         0.00000063 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.69581735 +/-    0.0012
Geocenter to KBO     36.80788723 +/-    0.0012
# Hcoef:  7.86

The following table shows the complete astrometric record for 02PG150. 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 (02PG150) followed by the observatory code and reference code for the source of the astrometry.

2002 08  11.40323  23 21 57.91   -10 16 09.3   22.9R 02PG150   807  Cg3358      
2002 08  12.30876  23 21 54.21   -10 16 36.8         02PG150   807  Cg3358      
2002 08  12.38688  23 21 53.91   -10 16 39.4         02PG150   807  Cg3358      
2002 09  10.39573  23 19 38.92   -10 31 57.1   23.2R 02PG150   662  Cg3358      
2002 09  10.45384  23 19 38.62   -10 31 58.9         02PG150   662  Cg3358      
2013 10  13.17502  00 25 41.261  -03 06 22.88  23.6i 02PG150   W84  C~553O      
2013 11  23.10450  00 23 06.835  -03 18 46.77  22.9r 02PG150   W84  C~553O      
2014 10  28.19972  00 30 40.827  -02 29 37.83  23.7r 02PG150   W84  C~553O      
2016 09  09.27780  00 46 37.421  -00 40 26.36  23.9r 02PG150   W84  C~553O      
2016 11  05.19800  00 42 13.223  -01 07 02.60  23.3r 02PG150   W84  C~553O      
2016 11  05.19938  00 42 13.206  -01 07 02.60  23.4i 02PG150   W84  C~553O      
2016 11  08.15510  00 42 01.632  -01 07 58.40  23.3i 02PG150   W84  C~553O      
2017 08  28.35579  00 53 27.362  +00 08 08.58  23.2i 02PG150   W84  C~553O      
2017 08  28.35716  00 53 27.346  +00 08 08.24  23.6r 02PG150   W84  C~553O      
2017 09  18.25527  00 52 01.368  -00 02 05.22  23.6i 02PG150   W84  C~553O      
2017 09  18.25664  00 52 01.371  -00 02 05.33  24.0r 02PG150   W84  C~553O      
2017 09  27.22126  00 51 19.131  -00 06 42.79  24.1r 02PG150   W84  C~553O      
2018 09  09.34683  00 58 43.247  +00 45 12.26  22.9z 02PG150   W84  C~553O      
2018 10  10.26648  00 56 19.373  +00 29 37.48  23.7i 02PG150   W84  C~553O      
2018 10  10.26785  00 56 19.372  +00 29 37.50  23.6r 02PG150   W84  C~553O      

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     0.26       0.00    -0.33
     2   0.0025      0.00     0.21       0.00    -0.07
     3   0.0027      0.00     0.62       0.00    -0.28
     4   0.0821      0.00    -0.46       0.00     0.35
     5   0.0823      0.00    -0.59       0.00     0.34
     6  11.1725      0.00    -0.16       0.00    -0.12
     7  11.2846      0.00     0.09       0.00     0.13
     8  12.2130      0.00     0.09       0.00    -0.03
     9  14.0804      0.00    -0.12       0.00    -0.12
    10  14.2363      0.00     0.10       0.00     0.05
    11  14.2363      0.00    -0.07       0.00     0.07
    12  14.2444      0.00     0.12       0.00     0.00
    13  15.0471      0.00     0.02       0.00     0.17
    14  15.0471      0.00    -0.15       0.00    -0.13
    15  15.1043      0.00    -0.08       0.00     0.12
    16  15.1043      0.00     0.06       0.00     0.06
    17  15.1289      0.00    -0.05       0.00    -0.01
    18  16.0792      0.00     0.02       0.00    -0.18
    19  16.1639      0.00     0.06       0.00    -0.02
    20  16.1639      0.00     0.15       0.00     0.04

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.

02PG150    quality flag:3

Type:         7:4EEE    7:4EEE    7:4EEE

axisobj        43.939    43.939    43.939
ecceobj         0.142     0.142     0.142
incobj          5.542     5.542     5.542
qmin           36.839    36.839    36.839
qmax           51.021    51.021    51.021
amean          43.727    43.727    43.727
amin           43.317    43.317    43.313
amax           44.181    44.181    44.181
emean           0.132     0.132     0.132
emin            0.102     0.103     0.102
emax            0.155     0.155     0.155
imean           4.395     4.402     4.405
imin            2.970     2.970     2.970
imax            6.734     6.732     6.737
excite_mean     0.154     0.154     0.154
fracstop        1.000     1.000     1.000
cjmean          3.070     3.070     3.070

libcent 0       176.1     176.1     177.9
libamp  0        88.5      88.9      89.4
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       267.2     267.2     267.1
kozaiamp         45.0      44.9      45.0