Orbit Fit and Astrometric record for 02GL32

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: 02GL32    
# Created Mon Oct 23 01:37:19 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:  10.99y
# First observation: 2002/03/18
#  Last observation: 2013/03/13
Preliminary a, adot, b, bdot, g, gdot:
  -0.001150   0.035041   0.000072  -0.004277   0.028212   0.000000
# Chi-squared of fit:    45.29 DOF:   24 RMS:  0.31
# Min/Max residuals:    -0.68    0.56
# Exact a, adot, b, bdot, g, gdot:
  1.602406E-05  3.355530E-02 -4.033509E-06 -4.109890E-03  2.977378E-02  1.222419E-04
# Covariance matrix:
  4.6077E-13 -2.8441E-13 -1.1110E-14  2.9112E-14  7.3897E-13 -6.1617E-13
 -2.8441E-13  3.8015E-13  1.7084E-14 -4.3376E-14 -3.8887E-13  9.1318E-13
 -1.1110E-14  1.7084E-14  1.2533E-13 -1.5873E-14 -1.3656E-14  4.2194E-14
  2.9112E-14 -4.3376E-14 -1.5873E-14  1.1842E-14  3.7621E-14 -1.0684E-13
  7.3897E-13 -3.8887E-13 -1.3656E-14  3.7621E-14  1.8959E-12 -8.0274E-13
 -6.1617E-13  9.1318E-13  4.2194E-14 -1.0684E-13 -8.0274E-13  2.2481E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.112069 -159.522327    0.380715   -0.017964   -0.920274  2452351.995953
# Heliocentric elements and errors
Epoch:              2452350.5000  =  2002/03/17
Mean Anomaly:          358.07214 +/-     0.019
Argument of Peri:      191.31728 +/-     0.025
Long of Asc Node:       11.08081 +/-     0.000
Inclination:             7.07527 +/-     0.000
Eccentricity:         0.12562512 +/-    0.0002
Semi-Major Axis:     39.45973982 +/-    0.0098
Time of Perihelion: 2452835.3459 +/-       4.8
Perihelion:          34.50260533 +/-    0.0110
Aphelion:            44.41687431 +/-    0.0130
Period (y)              247.8789 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -32.45267811 +/-    0.0015
Ecliptic Y          -11.70812103 +/-    0.0005
Ecliptic Z           -0.65195122 +/-    0.0000
Ecliptic XDOT         0.00106739 +/-    0.0000
Ecliptic YDOT        -0.00289310 +/-    0.0000
Ecliptic ZDOT        -0.00037785 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   34.50625241 +/-    0.0014
Geocenter to KBO     33.58659319 +/-    0.0016
# Hcoef:  7.85

The following table shows the complete astrometric record for 02GL32. 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 (02GL32) followed by the observatory code and reference code for the source of the astrometry.

2002 03  18.49521  13 13 57.37   -09 01 45.5   23.4R 02GL32    695  Ch1599      
2002 03  20.44437  13 13 47.54   -09 00 52.6         02GL32    695  Ch1599      
2002 04  06.17214  13 12 18.78   -08 52 47.1   22.5R 02GL32    807  Cf5154      
2002 04  06.30697  13 12 18.03   -08 52 43.3         02GL32    807  Cf5154      
2002 04  07.19384  13 12 13.22   -08 52 16.1         02GL32    807  Cf5154      
2002 04  10.47212  13 11 55.26   -08 50 35.5   22.0R 02GL32    568  Cf5154      
2002 04  10.55017  13 11 54.82   -08 50 33.2         02GL32    568  Cf5154      
2002 05  08.35609  13 09 30.69   -08 36 53.4   22.7R 02GL32    568  Cf7381      
2002 05  08.45816  13 09 30.18   -08 36 50.5         02GL32    568  Cf7381      
2003 04  01.36673  13 19 39.09   -09 51 52.4   23.0R 02GL32    695  Ck4262      
2003 04  01.43720  13 19 38.69   -09 51 50.2         02GL32    695  Ck4262      
2004 03  16.36037  13 27 52.34   -10 54 36.7   23.5R 02GL32    695  Ck4262      
2004 03  16.45633  13 27 51.88   -10 54 34.5         02GL32    695  Ck4262      
2013 03  13.41391  14 32 09.47   -18 41 25.6         02GL32    G37  C~0qSS      
2013 03  13.46955  14 32 09.27   -18 41 26.2         02GL32    G37  C~0qSS      

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     0.37       0.00     0.38
  2   0.0053   -154.82    -0.57      -5.97     0.47
  3   0.0511  -1555.99    -0.15     -53.46    -0.39
  4   0.0515  -1567.72    -0.04     -54.15    -0.68
  5   0.0539  -1644.00     0.29     -55.95    -0.31
  6   0.0629  -1928.49     0.05     -63.58     0.23
  7   0.0631  -1935.39     0.02     -63.92     0.11
  8   0.1392  -4224.10     0.13    -116.02    -0.10
  9   0.1395  -4232.20    -0.29    -116.21    -0.10
 10   1.0373   5816.86     0.32    -888.77     0.24
 11   1.0375   5810.54     0.07    -888.93     0.30
 12   1.9955  13991.22    -0.14   -1690.30    -0.04
 13   1.9958  13984.08    -0.06   -1690.75    -0.10
 14  10.9868  79708.37    -0.17   -9683.36     0.56
 15  10.9869  79705.47     0.17   -9684.86    -0.58

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.

02GL32    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.229    39.258    39.201
ecceobj         0.121     0.121     0.120
incobj          7.095     7.095     7.095
qmin           33.664    33.633    33.661
qmax           45.717    45.659    45.636
amean          39.458    39.458    39.458
amin           39.074    39.055    39.086
amax           39.893    39.899    39.867
emean           0.126     0.126     0.126
emin            0.107     0.106     0.108
emax            0.146     0.145     0.147
imean           7.150     7.073     7.188
imin            6.481     6.390     6.505
imax            7.835     7.791     7.856
excite_mean     0.177     0.176     0.178
fracstop        1.000     1.000     1.000
cjmean          3.016     3.017     3.016

libcent 0       179.9     179.7     179.5
libamp  0        62.3      74.6      55.4
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       177.9     179.9     176.9
kozaiamp        180.0     180.0     180.0