Orbit Fit and Astrometric record for 02GE32

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: 02GE32    
# Created Sat Dec 16 02:37:13 2017
# Orbit generated from Bernstein formalism
# Fitting   12 observations of   15
# Arc:   7.05y
# First observation: 2002/04/08
#  Last observation: 2009/04/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000412   0.024738  -0.000403   0.006919   0.028548   0.000000
# Chi-squared of fit:    10.91 DOF:   18 RMS:  0.17
# Min/Max residuals:    -0.39    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.527071E-05  2.359732E-02  5.032802E-06  6.619513E-03  2.559805E-02 -5.749294E-03
# Covariance matrix:
  4.8664E-13 -1.5777E-13  2.2195E-14 -2.4188E-14  1.6577E-13 -5.6501E-13
 -1.5777E-13  2.7086E-13 -5.9130E-14  6.4396E-14  5.0352E-13  1.5008E-12
  2.2195E-14 -5.9130E-14  3.6289E-13 -9.9789E-14 -1.1290E-13 -3.7297E-13
 -2.4188E-14  6.4396E-14 -9.9789E-14  4.8075E-14  1.2291E-13  4.0620E-13
  1.6577E-13  5.0352E-13 -1.1290E-13  1.2291E-13  1.9456E-12  2.8608E-12
 -5.6501E-13  1.5008E-12 -3.7297E-13  4.0620E-13  2.8608E-12  9.4677E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.895154 -159.305531    0.040797   -0.015710   -1.002732  2452372.622093
# Heliocentric elements and errors
Epoch:              2452370.5000  =  2002/04/06
Mean Anomaly:          277.69160 +/-     0.068
Argument of Peri:      105.00978 +/-     0.038
Long of Asc Node:      203.73202 +/-     0.000
Inclination:            15.71877 +/-     0.000
Eccentricity:         0.22744870 +/-    0.0001
Semi-Major Axis:     39.24474716 +/-    0.0085
Time of Perihelion: 2472901.6090 +/-      15.6
Perihelion:          30.31858035 +/-    0.0079
Aphelion:            48.17091398 +/-    0.0113
Period (y)              245.8558 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -37.49208157 +/-    0.0020
Ecliptic Y          -14.11472696 +/-    0.0007
Ecliptic Z           -0.61013150 +/-    0.0000
Ecliptic XDOT         0.00144836 +/-    0.0000
Ecliptic YDOT        -0.00214903 +/-    0.0000
Ecliptic ZDOT         0.00071773 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.06562065 +/-    0.0019
Geocenter to KBO     39.06547552 +/-    0.0021
# Hcoef:  7.13

The following table shows the complete astrometric record for 02GE32. 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 (02GE32) followed by the observatory code and reference code for the source of the astrometry.

2002 04  08.12135  13 15 06.02   -08 54 36.4   22.4R 02GE32    807  Cf5154      
2002 04  08.17047  13 15 05.80   -08 54 34.5         02GE32    807  Cf5154      
2002 04  09.21058  13 15 00.88   -08 54 00.9         02GE32    807  Cf5154      
2004 07  15.06709  13 22 02.45   -08 39 32.2   22.9R 02GE32    807  Cl0718      
2004 07  16.99059  13 22 04.15   -08 39 39.9         02GE32    807  Cl0718      
2004 07  17.08946  13 22 04.26   -08 39 40.4         02GE32    807  Cl0718      
2005 05  09.16897  13 29 56.76   -09 05 43.4   22.6R 02GE32    807  Cn5324      
2005 05  10.16326  13 29 52.53   -09 05 14.3         02GE32    807  Cn5324      
2005 05  10.24777  13 29 52.15   -09 05 11.8         02GE32    807  Cn5324      
2005 05  11.05675  13 29 48.76   -09 04 48.7         02GE32    807  Cn5324      
2006 04  27.11801  13 36 46.78   -09 20 43.7   22.1R 02GE32    807  Cr3565      
2006 04  27.18995  13 36 46.43   -09 20 41.3         02GE32    807  Cr3565      
2006 04  28.07173  13 36 42.25   -09 20 10.5         02GE32    807  Cr3565      
2009 04  27.20331  13 54 55.49   -09 45 03.4   23.6R 02GE32    688  C~06fZ      
2009 04  27.28524  13 54 55.18   -09 45 01.7         02GE32    688  C~06fZ      

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    -0.19
  2   0.0001     -3.74    -0.03       0.53     0.18
  3   0.0030    -83.93     0.20       4.19     0.05
  4   2.2695   5386.93 (   4.59)   3151.23 (   5.18)
  5   2.2748   5413.22     0.06    3153.48     0.13
  6   2.2751   5414.92     0.12    3153.62    -0.07
  7   3.0857  12514.74    -0.39    4295.45    -0.32
  8   3.0884  12445.52    -0.08    4299.47     0.06
  9   3.0886  12439.34    -0.29    4299.73     0.03
 10   3.0909  12383.94     0.12    4302.74     0.01
 11   4.0520  18532.67     0.28    5683.28    -0.00
 12   4.0522  18526.92     0.21    5683.63     0.12
 13   4.0546  18457.52 (  -0.94)   5689.83 (   3.04)
 14   7.0529  34384.87    -0.07   10144.91     0.01
 15   7.0532  34379.84 (   1.67)  10144.88 (  -0.26)

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.

02GE32    quality flag:3

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

axisobj        39.087    39.112    39.062
ecceobj         0.230     0.231     0.230
incobj         15.757    15.757    15.757
qmin           29.041    28.990    29.125
qmax           50.406    50.501    50.328
amean          39.455    39.455    39.455
amin           38.976    39.000    38.960
amax           39.994    39.977    40.012
emean           0.242     0.244     0.240
emin            0.220     0.218     0.219
emax            0.262     0.265     0.260
imean          15.756    15.640    15.897
imin           15.162    14.914    15.425
imax           16.189    16.165    16.273
excite_mean     0.364     0.363     0.364
fracstop        1.000     1.000     1.000
cjmean          2.901     2.901     2.900

libcent 0       180.0     179.4     179.6
libamp  0        90.7      83.3      98.5
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        89.2      89.2      89.2
kozaiamp         15.1      15.7      14.9