Orbit Fit and Astrometric record for 02GY32

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: 02GY32    
# Created Sun Dec  5 02:09:19 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     68 observations of     68
# Arc:  16.31y
# First observation: 2001/03/25
#  Last observation: 2017/07/15
# Chi-squared of fit:   187.57 DOF:    130 RMS:  0.29
# Min/Max residuals:    -0.86    1.39
# Exact a, adot, b, bdot, g, gdot:
  1.865659E-05  3.114269E-02  2.057335E-06  9.571083E-04  2.850366E-02  8.458738E-04
# Covariance matrix:
  1.6629E-13 -2.8492E-14  1.2412E-15 -6.4973E-16  1.1070E-14 -3.9097E-14
 -2.8492E-14  1.4109E-14 -8.2526E-16  4.1651E-16  1.4805E-14  2.4842E-14
  1.2412E-15 -8.2526E-16  1.2158E-13 -8.8168E-15 -8.6642E-16 -1.5394E-15
 -6.4973E-16  4.1651E-16 -8.8168E-15  7.7360E-16  3.8844E-16  7.8055E-16
  1.1070E-14  1.4805E-14 -8.6642E-16  3.8844E-16  8.5516E-14  2.2443E-14
 -3.9097E-14  2.4842E-14 -1.5394E-15  7.8055E-16  2.2443E-14  4.6607E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.421121 -146.839260    0.471920   -0.006666   -0.883677  2451993.886383
# Heliocentric elements and errors
Epoch:              2451994.5000  =  2001/03/26
Mean Anomaly:            9.70314 +/-     0.005
Argument of Peri:      335.33005 +/-     0.006
Long of Asc Node:      225.51689 +/-     0.000
Inclination:             1.80979 +/-     0.000
Eccentricity:         0.08585407 +/-    0.0000
Semi-Major Axis:     39.27846829 +/-    0.0017
Time of Perihelion: 2449571.0157 +/-       1.3
Perihelion:          35.90625195 +/-    0.0019
Aphelion:            42.65068464 +/-    0.0022
Period (y)              246.1728 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -30.36236324 +/-    0.0003
Ecliptic Y          -19.27329578 +/-    0.0002
Ecliptic Z           -0.25775406 +/-    0.0000
Ecliptic XDOT         0.00155931 +/-    0.0000
Ecliptic YDOT        -0.00254609 +/-    0.0000
Ecliptic ZDOT         0.00009152 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.96385381 +/-    0.0003
Geocenter to KBO     35.08322546 +/-    0.0004
# Hcoef:  7.41

The following table shows the complete astrometric record for 02GY32. 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 (02GY32) followed by the observatory code and reference code for the source of the astrometry.

2001 03  25.38564  14 03 10.72   -12 57 45.9   24.3R 02GY32    695  Cj8745      
2001 03  25.48509  14 03 10.28   -12 57 43.3         02GY32    695  Cj8745      
2002 04  06.19153  14 09 13.26   -13 25 58.8   21.4R 02GY32    807  Cf5154      
2002 04  06.33003  14 09 12.56   -13 25 55.5         02GY32    807  Cf5154      
2002 04  07.25776  14 09 07.88   -13 25 30.4         02GY32    807  Cf5154      
2002 04  11.41567  14 08 46.61   -13 23 38.1   21.6R 02GY32    568  Cf5154      
2002 04  11.49657  14 08 46.18   -13 23 35.9         02GY32    568  Cf5154      
2002 08  09.01499  14 03 31.29   -12 54 05.2   22.1R 02GY32    807  Ch1599      
2002 08  10.01380  14 03 34.04   -12 54 18.6         02GY32    807  Ch1599      
2002 08  11.01712  14 03 36.68   -12 54 31.3         02GY32    807  Ch1599      
2002 08  12.01394  14 03 39.50   -12 54 44.9         02GY32    807  Ch1599      
2003 03  06.49622  14 18 18.65   -14 09 09.4   22.2R 02GY32    662  Ch8265      
2003 03  06.53066  14 18 18.53   -14 09 08.4         02GY32    662  Ch8265      
2003 04  21.15961  14 14 56.93   -13 51 52.6   20.4R 02GY32    304  Ch8265      
2003 04  21.24663  14 14 56.47   -13 51 50.2         02GY32    304  Ch8265      
2008 04  05.37669  14 51 38.47   -16 28 43.3   22.8R 02GY32    688  Cy5685      
2008 04  05.46970  14 51 38.02   -16 28 41.1         02GY32    688  Cy5685      
2011 06  02.33078  15 08 04.641  -17 26 56.22  22.4G 02GY32    F51  C~343h      
2011 06  02.34406  15 08 04.581  -17 26 56.30  22.0G 02GY32    F51  C~343h      
2012 05  20.39072  15 16 19.176  -17 56 05.89  22.2G 02GY32    F51  C~343h      
2012 05  20.40528  15 16 19.097  -17 56 05.55  22.2G 02GY32    F51  C~343h      
2012 05  20.41989  15 16 19.035  -17 56 05.13  22.2G 02GY32    F51  C~343h      
2013 04  16.52939  15 26 33.443  -18 31 19.43  23.4G 02GY32    F51  C~343h      
2013 05  08.43671  15 24 38.491  -18 24 05.07  22.5G 02GY32    F51  C~343h      
2013 05  08.45081  15 24 38.418  -18 24 04.91  22.5G 02GY32    F51  C~343h      
2013 05  08.46490  15 24 38.348  -18 24 04.48  22.2G 02GY32    F51  C~343h      
2013 05  08.47903  15 24 38.262  -18 24 04.14  22.6G 02GY32    F51  C~343h      
2014 04  30.48465  15 32 35.879  -18 49 15.78  22.8G 02GY32    F51  C~343h      
2014 05  08.47781  15 31 52.346  -18 46 38.58  22.7G 02GY32    F51  C~343h      
2014 05  08.50205  15 31 52.225  -18 46 38.20  23.1G 02GY32    F51  C~343h      
2014 05  08.51415  15 31 52.156  -18 46 38.06  23.0G 02GY32    F51  C~343h      
2014 05  20.38302  15 30 45.985  -18 42 38.42  23.0G 02GY32    F51  C~343h      
2014 05  20.39434  15 30 45.942  -18 42 37.93  23.6G 02GY32    F51  C~343h      
2014 05  20.40563  15 30 45.872  -18 42 38.04  23.3G 02GY32    F51  C~343h      
2014 05  20.41691  15 30 45.792  -18 42 37.49  22.7G 02GY32    F51  C~343h      
2014 07  01.32039  15 27 23.934  -18 30 23.80  23.0G 02GY32    F51  C~343h      
2014 07  01.33166  15 27 23.921  -18 30 23.88  22.7G 02GY32    F51  C~343h      
2014 07  01.34293  15 27 23.857  -18 30 23.43  23.2G 02GY32    F51  C~343h      
2014 07  01.35420  15 27 23.815  -18 30 23.38  22.9G 02GY32    F51  C~343h      
2015 05  20.19139  15 38 02.13   -19 04 21.4   24.0V 02GY32    W84  C~1Tia      
2015 05  22.27165  15 37 50.45   -19 03 41.1         02GY32    W84  C~1Tia      
2015 05  23.18491  15 37 45.38   -19 03 23.3         02GY32    W84  C~1Tia      
2015 05  24.18398  15 37 39.84   -19 03 04.0         02GY32    W84  C~1Tia      
2015 05  25.38897  15 37 33.147  -19 02 41.57  23.0G 02GY32    F51  C~343h      
2015 05  25.40030  15 37 33.116  -19 02 40.99  22.1G 02GY32    F51  C~343h      
2015 05  25.41161  15 37 33.033  -19 02 41.06  23.5G 02GY32    F51  C~343h      
2015 06  08.40368  15 36 17.737  -18 58 20.16  23.1G 02GY32    F51  C~343h      
2015 06  08.41503  15 36 17.681  -18 58 20.15  24.5G 02GY32    F51  C~343h      
2015 06  08.42665  15 36 17.610  -18 58 19.88  22.8G 02GY32    F51  C~343h      
2015 07  19.27661  15 33 41.720  -18 49 18.40  22.2G 02GY32    F51  C~343h      
2015 07  19.29853  15 33 41.663  -18 49 18.42  22.6G 02GY32    F51  C~343h      
2015 07  19.30951  15 33 41.638  -18 49 18.55  23.7G 02GY32    F51  C~343h      
2016 03  07.63689  15 50 02.596  -19 40 56.82  21.7G 02GY32    F51  C~343h      
2016 05  07.45526  15 46 23.783  -19 28 31.45  22.8G 02GY32    F51  C~343i      
2016 05  07.46636  15 46 23.700  -19 28 31.30  22.7G 02GY32    F51  C~343i      
2016 05  07.47745  15 46 23.646  -19 28 30.95  23.0G 02GY32    F51  C~343i      
2016 05  07.48851  15 46 23.605  -19 28 30.90  22.1G 02GY32    F51  C~343i      
2017 03  25.57645  15 56 42.458  -19 57 28.59  24.5G 02GY32    F51  C~343i      
2017 03  27.63415  15 56 37.037  -19 57 10.71  23.6G 02GY32    F51  C~343i      
2017 04  05.50148  15 56 09.160  -19 55 38.04  22.4G 02GY32    F51  C~343i      
2017 04  26.49386  15 54 38.115  -19 50 47.73  23.6G 02GY32    F51  C~343i      
2017 04  26.51626  15 54 37.999  -19 50 47.51  24.0G 02GY32    F51  C~343i      
2017 04  26.52750  15 54 37.978  -19 50 47.48  23.1G 02GY32    F51  C~343i      
2017 05  19.43036  15 52 34.120  -19 44 17.97  23.1G 02GY32    F51  C~343i      
2017 07  15.32945  15 48 07.880  -19 30 26.26  22.4G 02GY32    F51  C~343i      
2017 07  15.34144  15 48 07.870  -19 30 26.36  22.4G 02GY32    F51  C~343i      
2017 07  15.35338  15 48 07.870  -19 30 26.29  22.8G 02GY32    F51  C~343i      
2017 07  15.36740  15 48 07.819  -19 30 25.72  22.4G 02GY32    F51  C~343i      

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    -0.38       0.00    -0.20
     2   0.0003      0.00    -0.06       0.00    -0.03
     3   1.0316      0.00    -0.04       0.00    -0.12
     4   1.0320      0.00     0.08       0.00    -0.49
     5   1.0346      0.00    -0.09       0.00    -0.07
     6   1.0459      0.00     0.26       0.00    -0.21
     7   1.0462      0.00     0.22       0.00    -0.22
     8   1.3734      0.00    -0.50       0.00     0.09
     9   1.3761      0.00     1.39       0.00    -0.52
    10   1.3789      0.00    -0.04       0.00     0.16
    11   1.3816      0.00    -0.02       0.00     0.39
    12   1.9469      0.00    -0.03       0.00     0.64
    13   1.9470      0.00    -0.30       0.00     1.13
    14   2.0719      0.00    -0.33       0.00     0.14
    15   2.0722      0.00    -0.14       0.00     0.13
    16   7.0308      0.00     0.20       0.00    -0.18
    17   7.0310      0.00    -0.02       0.00     0.09
    18  10.1874      0.00    -0.18       0.00     0.05
    19  10.1874      0.00    -0.05       0.00    -0.30
    20  11.1540      0.00     0.00       0.00    -0.33
    21  11.1541      0.00     0.04       0.00    -0.30
    22  11.1541      0.00     0.33       0.00    -0.20
    23  12.0606      0.00     0.02       0.00    -0.39
    24  12.1206      0.00    -0.02       0.00    -0.06
    25  12.1206      0.00     0.08       0.00    -0.20
    26  12.1207      0.00     0.22       0.00    -0.06
    27  12.1207      0.00     0.13       0.00    -0.02
    28  13.0981      0.00     0.19       0.00     0.18
    29  13.1200      0.00     0.16       0.00    -0.11
    30  13.1201      0.00     0.39       0.00    -0.22
    31  13.1201      0.00     0.38       0.00    -0.32
    32  13.1526      0.00    -0.13       0.00    -0.14
    33  13.1527      0.00     0.19       0.00     0.12
    34  13.1527      0.00     0.10       0.00    -0.22
    35  13.1527      0.00    -0.14       0.00     0.11
    36  13.2674      0.00    -0.20       0.00    -0.17
    37  13.2675      0.00     0.22       0.00    -0.39
    38  13.2675      0.00    -0.13       0.00    -0.09
    39  13.2675      0.00    -0.14       0.00    -0.19
    40  14.1514      0.00    -0.44       0.00     0.22
    41  14.1571      0.00    -0.86       0.00     0.22
    42  14.1596      0.00    -0.51       0.00     0.38
    43  14.1624      0.00    -0.06       0.00     0.40
    44  14.1656      0.00    -0.00       0.00    -0.15
    45  14.1657      0.00     0.50       0.00     0.21
    46  14.1657      0.00     0.21       0.00    -0.08
    47  14.2040      0.00    -0.32       0.00     0.10
    48  14.2041      0.00    -0.26       0.00    -0.09
    49  14.2041      0.00    -0.41       0.00    -0.03
    50  14.3159      0.00    -0.13       0.00     0.37
    51  14.3160      0.00    -0.26       0.00     0.19
    52  14.3160      0.00    -0.27       0.00    -0.02
    53  14.9521      0.00    -0.04       0.00     0.12
    54  15.1186      0.00     0.22       0.00    -0.05
    55  15.1186      0.00    -0.09       0.00    -0.11
    56  15.1187      0.00     0.03       0.00     0.04
    57  15.1187      0.00     0.34       0.00    -0.11
    58  16.0005      0.00     0.19       0.00     0.43
    59  16.0062      0.00    -0.04       0.00     0.02
    60  16.0304      0.00     0.12       0.00     0.47
    61  16.0879      0.00    -0.13       0.00    -0.09
    62  16.0880      0.00    -0.15       0.00    -0.22
    63  16.0880      0.00     0.40       0.00    -0.37
    64  16.1507      0.00    -0.09       0.00     0.11
    65  16.3065      0.00    -0.40       0.00     0.21
    66  16.3065      0.00    -0.03       0.00     0.01
    67  16.3066      0.00     0.49       0.00    -0.03
    68  16.3066      0.00     0.33       0.00     0.42

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.

02GY32    quality flag:3

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

axisobj        39.204    39.204    39.204
ecceobj         0.084     0.084     0.084
incobj          1.809     1.809     1.809
qmin           34.973    34.973    34.973
qmax           44.192    44.192    44.192
amean          39.461    39.461    39.461
amin           39.137    39.137    39.137
amax           39.831    39.831    39.831
emean           0.093     0.093     0.093
emin            0.077     0.077     0.077
emax            0.111     0.111     0.111
imean           3.566     3.566     3.566
imin            2.626     2.626     2.626
imax            4.276     4.276     4.276
excite_mean     0.112     0.112     0.112
fracstop        1.000     1.000     1.000
cjmean          3.037     3.037     3.037

libcent 0       179.3     179.3     179.3
libamp  0        35.3      35.3      35.3
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       181.0     180.9     180.9
kozaiamp        180.0     180.0     180.0