Orbit Fit and Astrometric record for 02GV32

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: 02GV32    
# Created Thu Oct 19 01:37:18 2017
# Orbit generated from Bernstein formalism
# Fitting   30 observations of   30
# Arc:   6.11y
# First observation: 2002/04/08
#  Last observation: 2008/05/19
Preliminary a, adot, b, bdot, g, gdot:
  -0.000592   0.038855   0.000043  -0.003096   0.031618   0.000000
# Chi-squared of fit:    59.47 DOF:   54 RMS:  0.25
# Min/Max residuals:    -0.72    0.51
# Exact a, adot, b, bdot, g, gdot:
  1.965410E-05  3.774465E-02 -2.368004E-06 -3.007253E-03  3.166976E-02 -2.179892E-03
# Covariance matrix:
  3.6365E-13 -9.6260E-14 -2.2906E-15  5.5674E-15  3.0822E-13 -3.1932E-13
 -9.6260E-14  1.4421E-13  5.0247E-15 -1.1545E-14 -1.6766E-14  6.3353E-13
 -2.2906E-15  5.0247E-15  7.9820E-14 -1.8066E-14  1.8788E-16  2.3833E-14
  5.5674E-15 -1.1545E-14 -1.8066E-14  1.0845E-14 -5.0103E-17 -5.4695E-14
  3.0822E-13 -1.6766E-14  1.8788E-16 -5.0103E-17  3.7624E-13 -1.4563E-14
 -3.1932E-13  6.3353E-13  2.3833E-14 -5.4695E-14 -1.4563E-14  2.9984E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.002194 -132.827524    0.480804    0.046089   -0.879896  2452372.810473
# Heliocentric elements and errors
Epoch:              2452370.5000  =  2002/04/06
Mean Anomaly:          342.40366 +/-     0.013
Argument of Peri:      173.07103 +/-     0.019
Long of Asc Node:       79.06309 +/-     0.001
Inclination:             5.38836 +/-     0.000
Eccentricity:         0.18825963 +/-    0.0001
Semi-Major Axis:     39.34405888 +/-    0.0041
Time of Perihelion: 2456776.4238 +/-       3.2
Perihelion:          31.93716080 +/-    0.0042
Aphelion:            46.75095695 +/-    0.0055
Period (y)              246.7897 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.38604001 +/-    0.0004
Ecliptic Y          -23.44033421 +/-    0.0004
Ecliptic Z            1.65368340 +/-    0.0000
Ecliptic XDOT         0.00250343 +/-    0.0000
Ecliptic YDOT        -0.00209153 +/-    0.0000
Ecliptic ZDOT        -0.00026927 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.45487211 +/-    0.0004
Geocenter to KBO     31.57586717 +/-    0.0006
# Hcoef:  7.40

The following table shows the complete astrometric record for 02GV32. 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 (02GV32) followed by the observatory code and reference code for the source of the astrometry.

2002 04  08.30973  15 02 19.68   -14 04 48.4   21.3R 02GV32    807  Cf5154      
2002 04  09.27375  15 02 14.82   -14 04 27.6         02GV32    807  Cf5154      
2002 04  09.33708  15 02 14.50   -14 04 25.9         02GV32    807  Cf5154      
2002 06  07.40052  14 56 39.93   -13 42 19.7         02GV32    568  Cf8973      
2002 06  07.40410  14 56 39.89   -13 42 19.8         02GV32    568  Cf8973      
2002 06  07.41079  14 56 39.86   -13 42 19.8         02GV32    568  Cf8973      
2002 06  07.41865  14 56 39.82   -13 42 19.6         02GV32    568  Cf8973      
2002 06  07.42379  14 56 39.80   -13 42 19.5         02GV32    568  Cf8973      
2002 06  07.42757  14 56 39.77   -13 42 19.5         02GV32    568  Cf8973      
2002 06  07.43121  14 56 39.76   -13 42 19.5         02GV32    568  Cf8973      
2002 06  07.43791  14 56 39.73   -13 42 19.4         02GV32    568  Cf8973      
2002 06  07.44578  14 56 39.68   -13 42 19.3         02GV32    568  Cf8973      
2002 06  18.16894  14 55 50.37   -13 39 40.3   22.0R 02GV32    695  Ck7379      
2002 06  18.21021  14 55 50.21   -13 39 39.7   22.0R 02GV32    695  Ck7379      
2002 06  19.17359  14 55 46.23   -13 39 27.9         02GV32    695  Ck7379      
2002 06  19.23787  14 55 45.96   -13 39 26.8         02GV32    695  Ck7379      
2003 06  03.03922  15 05 26.33   -14 30 02.8         02GV32    309  Ck7379      
2003 06  03.08677  15 05 26.06   -14 30 01.8         02GV32    309  Ck7379      
2004 04  16.45950  15 18 30.81   -15 32 11.0         02GV32    675  Ck7379      
2004 04  16.48162  15 18 30.68   -15 32 10.6         02GV32    675  Ck7379      
2004 05  11.39352  15 16 05.34   -15 23 02.2   22.0R 02GV32    568  Ck9583      
2004 05  11.48510  15 16 04.79   -15 23 00.4         02GV32    568  Ck9583      
2004 06  19.19102  15 12 30.40   -15 11 09.2   22.2R 02GV32    688  Ck9821      
2004 06  19.25970  15 12 30.14   -15 11 08.4         02GV32    688  Ck9821      
2007 05  13.33082  15 42 11.86   -17 32 10.9   22.6R 02GV32    688  Cv0116      
2007 05  13.39172  15 42 11.52   -17 32 09.9         02GV32    688  Cv0116      
2008 05  19.21421  15 50 26.90   -18 10 50.2   22.9R 02GV32    250  S~06AU      
2008 05  19.22115  15 50 26.86   -18 10 50.1         02GV32    250  S~06AU      
2008 05  19.22740  15 50 26.82   -18 10 50.0         02GV32    250  S~06AU      
2008 05  19.23365  15 50 26.78   -18 10 49.8         02GV32    250  S~06AU      

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     0.18
  2   0.0026    -73.71    -0.15       0.26    -0.72
  3   0.0028    -78.65    -0.13       0.59    -0.43
  4   0.1645  -5127.79     0.04     -99.25     0.36
  5   0.1645  -5128.32    -0.22     -99.51     0.11
  6   0.1645  -5128.74    -0.13     -99.63     0.02
  7   0.1646  -5129.36    -0.15     -99.61     0.08
  8   0.1646  -5129.67    -0.06     -99.60     0.12
  9   0.1646  -5130.09    -0.20     -99.72     0.01
 10   0.1646  -5130.23    -0.06     -99.76    -0.01
 11   0.1646  -5130.68    -0.00     -99.79    -0.01
 12   0.1646  -5131.40    -0.13     -99.90    -0.08
 13   0.1940  -5866.10     0.10    -152.25     0.11
 14   0.1941  -5868.51     0.31    -152.34     0.26
 15   0.1968  -5927.52     0.48    -157.59     0.14
 16   0.1969  -5931.61     0.39    -157.66     0.44
 17   1.1519   3026.79     0.27    -703.09    -0.08
 18   1.1520   3022.75     0.12    -703.21     0.02
 19   2.0237  15001.84     0.47   -1243.88     0.07
 20   2.0237  14999.91     0.35   -1243.99    -0.04
 21   2.0919  12818.51    -0.48   -1266.54    -0.16
 22   2.0922  12810.33    -0.18   -1266.90    -0.31
 23   2.1982   9621.31    -0.70   -1406.28    -0.15
 24   2.1984   9617.46     0.07   -1406.52    -0.03
 25   5.0952  36944.03    -0.14   -3195.44    -0.22
 26   5.0954  36938.90     0.51   -3195.59    -0.23
 27   6.1134  44646.86    -0.08   -3871.50     0.13
 28   6.1134  44646.25    -0.03   -3871.52     0.12
 29   6.1134  44645.65    -0.04   -3871.55     0.11
 30   6.1134  44645.02    -0.07   -3871.48     0.19

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.

02GV32    quality flag:3

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

axisobj        39.220    39.232    39.208
ecceobj         0.187     0.187     0.187
incobj          5.388     5.388     5.388
qmin           31.167    31.174    31.160
qmax           48.211    48.199    48.247
amean          39.456    39.456    39.456
amin           39.072    39.057    39.089
amax           39.910    39.915    39.893
emean           0.193     0.193     0.193
emin            0.175     0.176     0.176
emax            0.209     0.209     0.209
imean           4.210     4.195     4.224
imin            3.754     3.735     3.762
imax            4.932     4.907     4.951
excite_mean     0.206     0.206     0.206
fracstop        1.000     1.000     1.000
cjmean          3.003     3.004     3.003

libcent 0       179.6     179.9     179.7
libamp  0        49.1      56.4      43.5
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       176.0     175.8     176.0
kozaiamp        180.0     180.0     180.0