Orbit Fit and Astrometric record for 06AO98

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: 06AO98    
# Created Tue Nov 30 02:10:27 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     21 observations of     21
# Arc:  16.18y
# First observation: 2004/12/13
#  Last observation: 2021/02/15
# Chi-squared of fit:    65.81 DOF:     36 RMS:  0.31
# Min/Max residuals:    -0.72    0.47
# Exact a, adot, b, bdot, g, gdot:
  1.262983E-05  2.591910E-02  8.194817E-06  1.143787E-02  2.732786E-02 -1.949919E-03
# Covariance matrix:
  2.2939E-13 -3.8002E-14  2.1587E-14 -1.4973E-14  1.0761E-13 -6.8615E-14
 -3.8002E-14  3.0001E-14 -1.8595E-14  1.2994E-14  1.9372E-14  6.1465E-14
  2.1587E-14 -1.8595E-14  1.2364E-13 -1.8094E-14 -9.0554E-15 -4.0921E-14
 -1.4973E-14  1.2994E-14 -1.8094E-14  8.0005E-15  6.4868E-15  2.8587E-14
  1.0761E-13  1.9372E-14 -9.0554E-15  6.4868E-15  1.9546E-13  3.3851E-14
 -6.8615E-14  6.1465E-14 -4.0921E-14  2.8587E-14  3.3851E-14  1.3508E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.409562  128.075355    0.716398    0.004931   -0.675513  2453352.879171
# Heliocentric elements and errors
Epoch:              2453352.5000  =  2004/12/13
Mean Anomaly:          289.89349 +/-     0.023
Argument of Peri:       81.23313 +/-     0.029
Long of Asc Node:      126.06779 +/-     0.000
Inclination:            23.81769 +/-     0.000
Eccentricity:         0.09087232 +/-    0.0000
Semi-Major Axis:     38.16765432 +/-    0.0025
Time of Perihelion: 2470124.9880 +/-       8.7
Perihelion:          34.69927090 +/-    0.0023
Aphelion:            41.63603775 +/-    0.0028
Period (y)              235.8041 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.42333309 +/-    0.0004
Ecliptic Y           29.77876908 +/-    0.0005
Ecliptic Z            0.26186900 +/-    0.0000
Ecliptic XDOT        -0.00191942 +/-    0.0000
Ecliptic YDOT        -0.00176884 +/-    0.0000
Ecliptic ZDOT         0.00114456 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.27805603 +/-    0.0004
Geocenter to KBO     36.59276276 +/-    0.0006
# Hcoef:  7.50

The following table shows the complete astrometric record for 06AO98. 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 (06AO98) followed by the observatory code and reference code for the source of the astrometry.

2004 12  13.378428 08 42 25.08   +18 38 37.0         06AO98    645  C~1ReI      
2004 12  13.379257 08 42 25.08   +18 38 37.0         06AO98    645  C~1ReI      
2004 12  13.381745 08 42 25.07   +18 38 37.1         06AO98    645  C~1ReI      
2006 01  05.60000  08 47 35.17   +19 02 31.0         06AO98    568  Cq2894      
2006 01  05.65653  08 47 34.90   +19 02 32.6         06AO98    568  Cq2894      
2006 01  06.63376  08 47 29.99   +19 02 59.4   23.7R 06AO98    568  Cq2894      
2006 01  06.65528  08 47 29.85   +19 02 59.9   23.8R 06AO98    568  Cq2894      
2006 03  02.20869  08 42 37.89   +19 27 43.8   22.8R 06AO98    695  Cq7133      
2006 03  02.26492  08 42 37.62   +19 27 45.1         06AO98    695  Cq7133      
2006 03  02.32152  08 42 37.35   +19 27 46.0         06AO98    695  Cq7133      
2006 04  25.99565  08 40 42.32   +19 39 26.4   22.2R 06AO98    807  Cr3595      
2006 04  26.99498  08 40 43.12   +19 39 27.9         06AO98    807  Cr3595      
2006 04  27.99732  08 40 44.07   +19 39 28.9         06AO98    807  Cr3595      
2008 12  21.49168  09 09 26.80   +19 34 30.8   22.7r 06AO98    695  C~0hkV      
2008 12  21.55095  09 09 26.59   +19 34 32.4   23.0r 06AO98    695  C~0hkV      
2008 12  22.46934  09 09 23.21   +19 34 56.8   22.6r 06AO98    695  C~0hkV      
2013 03  12.14207  09 31 05.54   +20 54 53.1   23.0R 06AO98    G37  C~0qSd      
2013 03  12.28040  09 31 04.86   +20 54 56.3         06AO98    G37  C~0qSd      
2021 02  15.310410 10 32 36.209  +21 10 53.88  22.9G 06AO98    G37  C~4YtJ      
2021 02  15.386800 10 32 35.782  +21 10 57.25        06AO98    G37  C~4YtJ      
2021 02  15.460460 10 32 35.340  +21 10 59.93        06AO98    G37  C~4YtJ      

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     0.41       0.00    -0.44
     2   0.0000      0.00     0.45       0.00    -0.46
     3   0.0000      0.00     0.44       0.00    -0.41
     4   1.0629      0.00    -0.72       0.00     0.29
     5   1.0630      0.00    -0.45       0.00     0.37
     6   1.0657      0.00    -0.02       0.00     0.46
     7   1.0658      0.00    -0.46       0.00     0.38
     8   1.2151      0.00     0.47       0.00    -0.03
     9   1.2153      0.00     0.34       0.00    -0.01
    10   1.2154      0.00     0.22       0.00    -0.40
    11   1.3651      0.00    -0.40       0.00     0.01
    12   1.3679      0.00    -0.45       0.00     0.11
    13   1.3706      0.00     0.04       0.00     0.14
    14   4.0222      0.00    -0.15       0.00     0.06
    15   4.0224      0.00     0.01       0.00     0.10
    16   4.0249      0.00    -0.10       0.00     0.05
    17   8.2430      0.00     0.39       0.00    -0.09
    18   8.2434      0.00     0.03       0.00    -0.09
    19  16.1750      0.00     0.16       0.00    -0.13
    20  16.1752      0.00     0.14       0.00     0.17
    21  16.1754      0.00    -0.34       0.00    -0.10

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.

06AO98    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        38.025    38.025    38.025
ecceobj         0.085     0.085     0.085
incobj         23.858    23.858    23.858
qmin           34.166    34.167    34.237
qmax           42.032    42.019    42.026
amean          38.005    37.999    38.019
amin           37.698    37.669    37.737
amax           38.326    38.326    38.332
emean           0.078     0.077     0.078
emin            0.060     0.059     0.061
emax            0.099     0.098     0.097
imean          22.349    22.371    22.372
imin           21.448    21.456    21.456
imax           23.730    23.744    23.722
excite_mean     0.388     0.388     0.389
fracstop        1.000     1.000     1.000
cjmean          2.866     2.866     2.866

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       177.8     178.5     177.9
kozaiamp        179.9     179.9     180.0