Orbit Fit and Astrometric record for 06WG206

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: 06WG206   
# Created Wed Dec  8 02:10:37 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     33 observations of     33
# Arc:  17.01y
# First observation: 2004/03/17
#  Last observation: 2021/03/20
# Chi-squared of fit:    85.88 DOF:     60 RMS:  0.29
# Min/Max residuals:    -0.74    0.65
# Exact a, adot, b, bdot, g, gdot:
  1.600728E-05  2.871015E-02 -4.098460E-06 -7.113298E-03  2.648557E-02  4.496645E-03
# Covariance matrix:
  1.9402E-13 -3.6719E-14 -1.0477E-14  6.3196E-15 -7.9341E-14 -5.2757E-14
 -3.6719E-14  3.0143E-14  1.1961E-14 -7.1635E-15 -1.5133E-14  5.9774E-14
 -1.0477E-14  1.1961E-14  7.9569E-14 -1.0894E-14 -8.3894E-15  2.5650E-14
  6.3196E-15 -7.1635E-15 -1.0894E-14  3.9132E-15  4.9767E-15 -1.5357E-14
 -7.9341E-14 -1.5133E-14 -8.3894E-15  4.9767E-15  1.0845E-13 -4.1502E-14
 -5.2757E-14  5.9774E-14  2.5650E-14 -1.5357E-14 -4.1502E-14  1.2814E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.897286  124.781157   -0.784343    0.030697   -0.605518  2453081.772877
# Heliocentric elements and errors
Epoch:              2453082.5000  =  2004/03/18
Mean Anomaly:           24.35345 +/-     0.004
Argument of Peri:      123.70591 +/-     0.005
Long of Asc Node:      317.25607 +/-     0.000
Inclination:            14.25862 +/-     0.000
Eccentricity:         0.29460353 +/-    0.0000
Semi-Major Axis:     50.82873533 +/-    0.0043
Time of Perihelion: 2444128.4339 +/-       1.8
Perihelion:          35.85441030 +/-    0.0039
Aphelion:            65.80306035 +/-    0.0061
Period (y)              362.3866 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.50465400 +/-    0.0003
Ecliptic Y           31.02364441 +/-    0.0004
Ecliptic Z            1.90828777 +/-    0.0000
Ecliptic XDOT        -0.00272706 +/-    0.0000
Ecliptic YDOT        -0.00128794 +/-    0.0000
Ecliptic ZDOT        -0.00071074 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.37393397 +/-    0.0003
Geocenter to KBO     37.75635718 +/-    0.0005
# Hcoef:  6.87

The following table shows the complete astrometric record for 06WG206. 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 (06WG206) followed by the observatory code and reference code for the source of the astrometry.

2004 03  17.272134 08 31 29.97   +21 52 48.5   22.4V 06WG206   645  C~1RHk      
2004 03  17.272963 08 31 29.97   +21 52 48.5   22.7V 06WG206   645  C~1RHk      
2004 03  17.275451 08 31 29.96   +21 52 48.5   23.6V 06WG206   645  C~1RHk      
2004 03  18.233941 08 31 27.00   +21 52 51.3         06WG206   645  C~1RHk      
2004 03  18.234771 08 31 26.99   +21 52 51.3         06WG206   645  C~1RHk      
2004 03  18.237259 08 31 26.98   +21 52 51.3         06WG206   645  C~1RHk      
2004 12  11.428555 08 45 32.10   +20 42 48.1   23.0V 06WG206   645  C~1RHk      
2004 12  11.429384 08 45 32.10   +20 42 48.1   22.8V 06WG206   645  C~1RHk      
2004 12  11.431872 08 45 32.09   +20 42 48.1   24.0V 06WG206   645  C~1RHk      
2004 12  11.459556 08 45 31.94   +20 42 48.3   22.6V 06WG206   645  C~1RHk      
2004 12  11.460385 08 45 31.94   +20 42 48.3   22.5V 06WG206   645  C~1RHk      
2004 12  11.462873 08 45 31.93   +20 42 48.4   23.4V 06WG206   645  C~1RHk      
2006 11  23.48953  08 58 22.35   +19 01 30.1         06WG206   568  C~0X63      
2006 11  24.48052  08 58 21.18   +19 01 33.8         06WG206   568  C~0X63      
2006 11  24.53207  08 58 21.12   +19 01 34.0         06WG206   568  C~0X63      
2006 11  24.58403  08 58 21.05   +19 01 34.2         06WG206   568  C~0X63      
2007 01  19.30897  08 54 58.22   +19 13 18.9   22.6g 06WG206   568  C~0X63      
2007 01  19.35157  08 54 57.99   +19 13 19.6   22.9g 06WG206   568  C~0X63      
2007 01  19.38436  08 54 57.82   +19 13 20.3   23.1g 06WG206   568  C~0X63      
2007 01  20.37240  08 54 52.56   +19 13 38.3         06WG206   568  C~0X63      
2007 02  21.41492  08 52 01.65   +19 22 43.2         06WG206   695  C~0X63      
2007 11  08.46199  09 04 15.86   +18 12 16.0   22.1r 06WG206   695  C~0X63      
2007 11  09.44103  09 04 16.45   +18 12 11.9   22.1r 06WG206   695  C~0X63      
2008 05  03.16909  08 55 13.82   +18 37 52.4         06WG206   695  C~0X63      
2008 05  04.13462  08 55 14.87   +18 37 42.3         06WG206   695  C~0X63      
2008 12  06.39492  09 09 36.55   +17 23 20.9   22.7R 06WG206   675  C~0X63      
2008 12  06.48512  09 09 36.37   +17 23 21.8   23.0R 06WG206   675  C~0X63      
2010 01  21.32821  09 12 21.35   +16 43 53.3         06WG206   568  C~0X63      
2010 01  21.36410  09 12 21.17   +16 43 53.9         06WG206   568  C~0X63      
2010 01  21.39647  09 12 20.99   +16 43 54.6         06WG206   568  C~0X63      
2021 03  20.162360 10 04 30.451  +08 02 58.61  23.4G 06WG206   G37  C~4hnA      
2021 03  20.201490 10 04 30.288  +08 02 59.32        06WG206   G37  C~4hnA      
2021 03  20.240470 10 04 30.133  +08 03 00.27        06WG206   G37  C~4hnA      

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     0.24       0.00    -0.09
     2   0.0000      0.00     0.28       0.00    -0.09
     3   0.0000      0.00     0.24       0.00    -0.10
     4   0.0026      0.00     0.08       0.00     0.01
     5   0.0026      0.00    -0.03       0.00     0.00
     6   0.0026      0.00    -0.07       0.00    -0.00
     7   0.7369      0.00     0.10       0.00    -0.30
     8   0.7369      0.00     0.14       0.00    -0.30
     9   0.7369      0.00     0.11       0.00    -0.33
    10   0.7370      0.00    -0.74       0.00    -0.46
    11   0.7370      0.00    -0.70       0.00    -0.47
    12   0.7370      0.00    -0.72       0.00    -0.40
    13   2.6864      0.00     0.05       0.00     0.27
    14   2.6891      0.00     0.08       0.00     0.40
    15   2.6893      0.00     0.19       0.00     0.38
    16   2.6894      0.00     0.18       0.00     0.37
    17   2.8420      0.00    -0.02       0.00     0.38
    18   2.8421      0.00    -0.04       0.00     0.30
    19   2.8422      0.00     0.05       0.00     0.40
    20   2.8449      0.00    -0.19       0.00     0.65
    21   2.9326      0.00    -0.33       0.00     0.08
    22   3.6446      0.00     0.32       0.00    -0.08
    23   3.6473      0.00     0.39       0.00     0.01
    24   4.1284      0.00    -0.16       0.00    -0.03
    25   4.1310      0.00    -0.24       0.00    -0.08
    26   4.7231      0.00    -0.10       0.00    -0.34
    27   4.7234      0.00     0.24       0.00    -0.07
    28   5.8482      0.00     0.37       0.00     0.09
    29   5.8483      0.00     0.43       0.00     0.01
    30   5.8484      0.00     0.23       0.00     0.09
    31  17.0072      0.00    -0.08       0.00    -0.09
    32  17.0073      0.00    -0.16       0.00    -0.21
    33  17.0074      0.00    -0.13       0.00    -0.08

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.

06WG206    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        50.640    50.640    50.639
ecceobj         0.295     0.295     0.295
incobj         14.299    14.299    14.299
qmin           34.896    34.808    34.930
qmax           66.762    66.798    66.817
amean          50.427    50.383    50.365
amin           49.837    49.839    49.829
amax           51.125    51.121    51.105
emean           0.287     0.286     0.286
emin            0.267     0.267     0.268
emax            0.307     0.308     0.307
imean          15.731    15.770    15.720
imin           14.849    14.861    14.852
imax           16.545    16.557    16.549
excite_mean     0.395     0.395     0.394
fracstop        1.000     1.000     1.000
cjmean          2.983     2.982     2.983

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
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       187.4     185.1     186.1
kozaiamp        180.0     180.0     180.0