Orbit Fit and Astrometric record for 02GS32

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: 02GS32    
# Created Sat Oct 21 01:37:18 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   21
# Arc:  12.14y
# First observation: 2002/04/08
#  Last observation: 2014/05/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000511   0.030136  -0.000058   0.001900   0.027202   0.000000
# Chi-squared of fit:    42.84 DOF:   36 RMS:  0.25
# Min/Max residuals:    -0.49    0.61
# Exact a, adot, b, bdot, g, gdot:
  1.458499E-05  2.927266E-02  7.762827E-07  1.847088E-03  2.720085E-02  7.947077E-04
# Covariance matrix:
  4.7249E-13 -1.2280E-13  1.5654E-15 -6.3477E-15  2.7447E-13 -2.9138E-13
 -1.2280E-13  2.3518E-13 -1.1915E-14  1.5486E-14  8.1302E-14  6.7010E-13
  1.5654E-15 -1.1915E-14  1.4535E-13 -1.4397E-14 -8.7100E-15 -3.4633E-14
 -6.3477E-15  1.5486E-14 -1.4397E-14  3.4364E-15  6.4453E-15  4.4654E-14
  2.7447E-13  8.1302E-14 -8.7100E-15  6.4453E-15  3.8174E-13  2.6003E-13
 -2.9138E-13  6.7010E-13 -3.4633E-14  4.4654E-14  2.6003E-13  1.9309E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.448877 -132.510437    0.488123   -0.037518   -0.876205  2452372.647603
# Heliocentric elements and errors
Epoch:              2452370.5000  =  2002/04/06
Mean Anomaly:            7.85073 +/-     0.021
Argument of Peri:      316.52645 +/-     0.027
Long of Asc Node:      260.35334 +/-     0.001
Inclination:             4.31528 +/-     0.000
Eccentricity:         0.10691439 +/-    0.0001
Semi-Major Axis:     42.08502942 +/-    0.0043
Time of Perihelion: 2450195.8107 +/-       5.9
Perihelion:          37.58553435 +/-    0.0050
Aphelion:            46.58452450 +/-    0.0058
Period (y)              273.0233 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -25.77067745 +/-    0.0006
Ecliptic Y          -27.38716905 +/-    0.0006
Ecliptic Z           -1.57081894 +/-    0.0000
Ecliptic XDOT         0.00210421 +/-    0.0000
Ecliptic YDOT        -0.00205709 +/-    0.0000
Ecliptic ZDOT         0.00018255 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.63844201 +/-    0.0006
Geocenter to KBO     36.76355794 +/-    0.0008
# Hcoef:  7.53

The following table shows the complete astrometric record for 02GS32. 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 (02GS32) followed by the observatory code and reference code for the source of the astrometry.

2002 04  08.14686  14 57 10.98   -19 23 59.2   22.6R 02GS32    807  Cf5154      
2002 04  09.26285  14 57 05.81   -19 23 38.4         02GS32    807  Cf5154      
2002 04  09.32608  14 57 05.54   -19 23 37.8         02GS32    807  Cf5154      
2002 08  09.05873  14 50 14.41   -18 48 32.8   22.8R 02GS32    807  Cg3254      
2002 08  10.05638  14 50 15.77   -18 48 33.6         02GS32    807  Cg3254      
2002 08  11.06067  14 50 17.24   -18 48 34.8         02GS32    807  Cg3254      
2003 06  02.36154  14 59 26.91   -19 26 02.8   23.2R 02GS32    568  Ci2679      
2003 06  02.42876  14 59 26.59   -19 26 01.2         02GS32    568  Ci2679      
2003 07  06.28921  14 57 21.73   -19 15 17.3   23.0R 02GS32    568  Ci2679      
2003 07  06.37190  14 57 21.56   -19 15 16.0         02GS32    568  Ci2679      
2004 06  09.30961  15 05 49.29   -19 45 03.8   23.0R 02GS32    568  Ck9027      
2004 06  09.37749  15 05 48.98   -19 45 02.5         02GS32    568  Ck9027      
2013 05  08.26404  16 12 16.276  -22 20 58.67  24.1r 02GS32    807  C~2KVM      
2013 05  08.26404  16 12 16.25   -22 20 58.4   23.4r 02GS32    W84  C~2J8o      
2013 05  08.33315  16 12 15.880  -22 20 57.50        02GS32    807  C~2KVM      
2013 05  08.33315  16 12 15.88   -22 20 57.5         02GS32    W84  C~2J8o      
2013 05  08.38256  16 12 15.606  -22 20 56.51        02GS32    807  C~2KVM      
2013 05  08.38256  16 12 15.62   -22 20 56.8         02GS32    W84  C~2J8o      
2014 05  30.24781  16 17 23.69   -22 26 02.9   22.1R 02GS32    695  C~1LJ7      
2014 05  30.37785  16 17 22.92   -22 26 00.6         02GS32    695  C~1LJ7      
2014 05  30.41523  16 17 22.69   -22 25 59.7         02GS32    695  C~1LJ7      

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     0.50       0.00     0.06
  2   0.0031    -76.04    -0.46      -0.91     0.33
  3   0.0032    -79.88     0.07      -1.43    -0.11
  4   0.3365  -6269.12     0.03     324.54    -0.30
  5   0.3392  -6250.41     0.13     329.46    -0.22
  6   0.3420  -6230.09     0.14     334.46    -0.09
  7   1.1505   1879.23    -0.27     426.44     0.10
  8   1.1507   1874.44    -0.19     426.70     0.21
  9   1.2434     -2.80    -0.49     543.62     0.06
 10   1.2436     -5.48    -0.11     544.18     0.29
 11   2.1716   7390.43     0.32     829.16    -0.11
 12   2.1717   7385.86     0.38     829.22    -0.23
 13  11.0831  65979.40    -0.07    4293.90     0.00
 14  11.0831  65979.84     0.37    4293.69    -0.21
 15  11.0833  65973.66    -0.09    4293.90    -0.07
 16  11.0833  65973.66    -0.09    4293.90    -0.07
 17  11.0835  65969.61    -0.06    4293.97    -0.07
 18  11.0835  65969.34    -0.32    4294.23     0.20
 19  12.1426  70704.30     0.61    4740.58    -0.24
 20  12.1430  70692.11    -0.02    4741.10     0.07
 21  12.1431  70688.44    -0.39    4741.48     0.38

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.

02GS32    quality flag:2

Type:       SCATNEAR     5:3EE     5:3EE

axisobj        41.936    41.948    41.923
ecceobj         0.103     0.104     0.103
incobj          4.312     4.312     4.312
qmin           36.555    36.314    36.408
qmax           48.456    48.644    48.657
amean          42.327    42.329    42.328
amin           41.905    41.912    41.900
amax           42.780    42.784    42.805
emean           0.068     0.110     0.104
emin            0.012     0.083     0.061
emax            0.134     0.140     0.139
imean           7.825     6.446     6.595
imin            5.553     5.089     5.524
imax            9.234     7.868     8.102
excite_mean     0.154     0.158     0.156
fracstop        1.000     1.000     1.000
cjmean          3.053     3.052     3.053

libcent 0      -180.0     181.4     181.6
libamp  0      -180.0     103.2     142.2
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       219.5     179.2     265.1
kozaiamp        179.9     180.0      52.9