Orbit Fit and Astrometric record for 06HN122

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: 06HN122   
# Created Mon Dec  6 02:10:23 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     22 observations of     22
# Arc:  15.03y
# First observation: 2006/02/06
#  Last observation: 2021/02/15
# Chi-squared of fit:    32.26 DOF:     38 RMS:  0.21
# Min/Max residuals:    -0.46    0.78
# Exact a, adot, b, bdot, g, gdot:
  1.700706E-05  3.007999E-02 -2.237381E-06 -4.107094E-03  2.729104E-02  1.361301E-03
# Covariance matrix:
  2.1276E-13 -1.5569E-14  4.7987E-17  4.5585E-16  1.9319E-13 -9.1071E-15
 -1.5569E-14  2.7420E-14  2.5270E-15 -3.5544E-15  2.8906E-14  6.0447E-14
  4.7987E-17  2.5270E-15  1.2109E-13 -1.0554E-14  4.1764E-15  6.0699E-15
  4.5585E-16 -3.5544E-15 -1.0554E-14  2.6556E-15 -4.7253E-15 -8.5161E-15
  1.9319E-13  2.8906E-14  4.1764E-15 -4.7253E-15  4.7078E-13  7.7385E-14
 -9.1071E-15  6.0447E-14  6.0699E-15 -8.5161E-15  7.7385E-14  1.4477E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.469295  133.850256   -0.054647    0.008186   -0.983494  2453772.809984
# Heliocentric elements and errors
Epoch:              2453772.5000  =  2006/02/06
Mean Anomaly:           10.85444 +/-     0.006
Argument of Peri:      160.50992 +/-     0.008
Long of Asc Node:      317.28577 +/-     0.000
Inclination:             7.78289 +/-     0.000
Eccentricity:         0.18831230 +/-    0.0001
Semi-Major Axis:     46.06721323 +/-    0.0060
Time of Perihelion: 2450329.0699 +/-       1.9
Perihelion:          37.39219017 +/-    0.0062
Aphelion:            54.74223628 +/-    0.0080
Period (y)              312.6771 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -26.10888677 +/-    0.0006
Ecliptic Y           27.09219601 +/-    0.0007
Ecliptic Z            0.30002715 +/-    0.0000
Ecliptic XDOT        -0.00227009 +/-    0.0000
Ecliptic YDOT        -0.00199582 +/-    0.0000
Ecliptic ZDOT        -0.00041090 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.62643923 +/-    0.0007
Geocenter to KBO     36.64206771 +/-    0.0009
# Hcoef:  7.61

The following table shows the complete astrometric record for 06HN122. 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 (06HN122) followed by the observatory code and reference code for the source of the astrometry.

2006 02  06.30923  09 05 49.91   +17 07 09.7   23.7r 06HN122   568  C~0D4B      
2006 02  06.34890  09 05 49.70   +17 07 10.3   22.9r 06HN122   568  C~0D4B      
2006 02  06.38919  09 05 49.48   +17 07 11.0   23.2r 06HN122   568  C~0D4B      
2006 03  02.21652  09 03 46.00   +17 14 59.1   22.9R 06HN122   695  Cr3609      
2006 03  02.27287  09 03 45.69   +17 15 00.1         06HN122   695  Cr3609      
2006 03  02.32910  09 03 45.42   +17 15 01.1         06HN122   695  Cr3609      
2006 04  26.00584  09 01 28.35   +17 22 01.0   22.6R 06HN122   807  Cr3609      
2006 04  27.00547  09 01 28.56   +17 21 57.1         06HN122   807  Cr3609      
2006 04  28.00755  09 01 28.89   +17 21 52.7         06HN122   807  Cr3609      
2006 05  01.17176  09 01 30.61   +17 21 35.4   23.5R 06HN122   695  Cr3609      
2006 05  01.25610  09 01 30.68   +17 21 35.4         06HN122   695  Cr3609      
2006 05  02.16524  09 01 31.39   +17 21 29.1         06HN122   695  Cr3609      
2006 12  21.36750  09 16 08.66   +16 08 29.9   22.9R 06HN122   695  C~2i4J      
2006 12  21.50728  09 16 08.21   +16 08 32.7         06HN122   695  C~2i4J      
2013 03  12.14186  09 47 37.81   +12 04 15.4   23.1R 06HN122   695  C~0udP      
2013 03  12.20453  09 47 37.53   +12 04 17.0         06HN122   695  C~0udP      
2013 03  13.13646  09 47 33.34   +12 04 37.7         06HN122   695  C~0udP      
2016 03  13.16104  10 05 46.08   +09 44 16.9   23.3R 06HN122   G37  C~1pPo      
2016 03  13.20119  10 05 45.90   +09 44 18.0         06HN122   G37  C~1pPo      
2021 02  15.323700 10 37 04.904  +05 36 01.69  23.4G 06HN122   G37  C~4Ytg      
2021 02  15.400100 10 37 04.528  +05 36 03.80        06HN122   G37  C~4Ytg      
2021 02  15.473890 10 37 04.167  +05 36 05.71        06HN122   G37  C~4Ytg      

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     0.08       0.00    -0.05
     2   0.0001      0.00     0.22       0.00    -0.30
     3   0.0002      0.00     0.28       0.00    -0.46
     4   0.0655      0.00     0.40       0.00    -0.00
     5   0.0656      0.00    -0.19       0.00     0.02
     6   0.0658      0.00    -0.20       0.00     0.05
     7   0.2155      0.00    -0.01       0.00    -0.09
     8   0.2182      0.00    -0.13       0.00    -0.02
     9   0.2209      0.00    -0.06       0.00     0.01
    10   0.2296      0.00    -0.22       0.00    -0.08
    11   0.2298      0.00    -0.02       0.00     0.46
    12   0.2323      0.00    -0.02       0.00    -0.12
    13   0.8708      0.00    -0.33       0.00    -0.19
    14   0.8712      0.00     0.09       0.00     0.78
    15   7.0933      0.00    -0.10       0.00    -0.23
    16   7.0935      0.00     0.03       0.00    -0.02
    17   7.0960      0.00     0.06       0.00     0.28
    18  10.0968      0.00     0.05       0.00    -0.01
    19  10.0969      0.00     0.16       0.00     0.12
    20  15.0254      0.00    -0.03       0.00    -0.15
    21  15.0256      0.00    -0.04       0.00    -0.00
    22  15.0258      0.00    -0.03       0.00     0.02

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.

06HN122    quality flag:2

Type:      CLASSICAL  SCATNEAR  SCATNEAR

axisobj        46.008    46.008    46.008
ecceobj         0.188     0.188     0.188
incobj          7.791     7.791     7.791
qmin           36.354    36.308    36.308
qmax           56.000    56.195    56.190
amean          45.974    46.008    45.998
amin           45.564    45.543    45.575
amax           46.481    46.517    46.544
emean           0.191     0.192     0.191
emin            0.175     0.175     0.175
emax            0.207     0.209     0.209
imean           8.769     8.783     8.729
imin            7.881     7.859     7.788
imax            9.575     9.586     9.566
excite_mean     0.244     0.245     0.244
fracstop        1.000     1.000     1.000
cjmean          3.052     3.052     3.052

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       183.7     182.7     183.0
kozaiamp        180.0     180.0     180.0