Orbit Fit and Astrometric record for 06QH181

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: 06QH181   
# Created Fri Mar 29 01:12:50 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     22 observations of     22
# Arc:  14.18y
# First observation: 2006/08/21
#  Last observation: 2020/10/24
# Chi-squared of fit:   111.86 DOF:     38 RMS:  0.40
# Min/Max residuals:    -0.79    1.44
# Exact a, adot, b, bdot, g, gdot:
  8.468900E-06  6.599223E-03  5.390635E-06  2.271576E-03  1.228863E-02  2.771072E-03
# Covariance matrix:
  2.4255E-13 -3.4038E-14  6.5916E-15 -6.7384E-15  4.4560E-14 -2.5222E-13
 -3.4038E-14  4.4301E-14 -8.3442E-15  1.3803E-14  9.5964E-14  5.1445E-13
  6.5916E-15 -8.3442E-15  2.2540E-13 -2.3955E-14 -4.2525E-16 -1.2540E-13
 -6.7384E-15  1.3803E-14 -2.3955E-14  8.0890E-15  2.1200E-14  1.8469E-13
  4.4560E-14  9.5964E-14 -4.2525E-16  2.1200E-14  5.9717E-13  7.8483E-13
 -2.5222E-13  5.1445E-13 -1.2540E-13  1.8469E-13  7.8483E-13  6.8896E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.252149   65.111339    1.005357    0.006903    0.119111  2453968.867764
# Heliocentric elements and errors
Epoch:              2453968.5000  =  2006/08/21
Mean Anomaly:          104.37359 +/-     0.051
Argument of Peri:      207.32659 +/-     0.029
Long of Asc Node:       73.80561 +/-     0.000
Inclination:            19.20162 +/-     0.000
Eccentricity:         0.42101996 +/-    0.0002
Semi-Major Axis:     65.67600199 +/-    0.0131
Time of Perihelion: 2397605.1772 +/-      32.2
Perihelion:          38.02509442 +/-    0.0129
Aphelion:            93.32690956 +/-    0.0214
Period (y)              532.2532 +/-      0.16
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.05060046 +/-    0.0022
Ecliptic Y           73.16497770 +/-    0.0046
Ecliptic Z           -4.61606470 +/-    0.0003
Ecliptic XDOT        -0.00105770 +/-    0.0000
Ecliptic YDOT         0.00119906 +/-    0.0000
Ecliptic ZDOT         0.00047021 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   81.25836022 +/-    0.0043
Geocenter to KBO     81.37573972 +/-    0.0051
# Hcoef:  4.59

The following table shows the complete astrometric record for 06QH181. 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 (06QH181) followed by the observatory code and reference code for the source of the astrometry.

2006 08  21.36701  04 15 09.34   +17 57 03.8   22.3R 06QH181   807  Cs5502      
2006 08  22.35191  04 15 09.90   +17 57 03.8         06QH181   807  Cs5502      
2006 08  23.34016  04 15 10.42   +17 57 04.3         06QH181   807  Cs5502      
2006 10  19.38669  04 14 19.45   +17 54 01.9   22.9R 06QH181   695  Ct0530      
2006 10  19.49486  04 14 19.25   +17 54 01.9         06QH181   695  Ct0530      
2006 10  20.39130  04 14 17.29   +17 53 56.1         06QH181   695  Ct0530      
2006 10  20.49409  04 14 17.07   +17 53 55.4         06QH181   695  Ct0530      
2008 03  04.31389  04 11 37.98   +18 00 11.4         06QH181   568  Cy4051      
2008 03  05.22922  04 11 38.65   +18 00 16.1         06QH181   568  Cy4051      
2008 03  05.31374  04 11 38.69   +18 00 16.2         06QH181   568  Cy4051      
2013 10  06.50390  04 24 59.47   +19 15 13.3   23.4R 06QH181   695  C~0ze1      
2013 10  07.33701  04 24 58.15   +19 15 09.8         06QH181   695  C~0ze1      
2013 10  07.46039  04 24 57.97   +19 15 09.5         06QH181   695  C~0ze1      
2013 11  06.35973  04 23 54.56   +19 12 48.6   23.9R 06QH181   G37  C~0yjC      
2013 11  06.44820  04 23 54.33   +19 12 47.8         06QH181   G37  C~0yjC      
2017 01  16.164435 04 25 14.31   +19 40 51.1   23.9G 06QH181   W84  C~7dEu      
2017 01  16.166497 04 25 14.33   +19 40 50.7   23.9G 06QH181   W84  C~7dEu      
2018 12  09.446945 04 29 38.65   +20 04 40.8   23.8r 06QH181   T09  C~7dEu      
2018 12  09.553480 04 29 38.34   +20 04 40.4   23.8r 06QH181   T09  C~7dEu      
2018 12  10.466758 04 29 35.82   +20 04 36.2   23.7r 06QH181   T09  C~7dEu      
2018 12  10.572081 04 29 35.52   +20 04 35.7   23.8r 06QH181   T09  C~7dEu      
2020 10  24.288752 04 34 29.73   +20 29 20.9   23.9G 06QH181   W84  C~7dEu      

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     0.10       0.00    -0.50
     2   0.0027      0.00     0.00       0.00    -0.79
     3   0.0054      0.00     0.02       0.00    -0.45
     4   0.1616      0.00    -0.01       0.00    -0.39
     5   0.1619      0.00     0.53       0.00     0.24
     6   0.1643      0.00     0.03       0.00    -0.38
     7   0.1646      0.00     0.13       0.00    -0.47
     8   1.5358      0.00    -0.42       0.00     1.44
     9   1.5383      0.00    -0.00       0.00     1.12
    10   1.5385      0.00    -0.28       0.00     0.77
    11   7.1270      0.00     0.02       0.00     0.03
    12   7.1293      0.00    -0.43       0.00    -0.35
    13   7.1296      0.00    -0.15       0.00    -0.19
    14   7.2115      0.00     0.14       0.00     0.26
    15   7.2117      0.00     0.14       0.00    -0.06
    16  10.4060      0.00    -0.20       0.00     0.16
    17  10.4060      0.00     0.16       0.00    -0.23
    18  12.3014      0.00     0.04       0.00    -0.14
    19  12.3017      0.00    -0.10       0.00    -0.03
    20  12.3042      0.00     0.13       0.00    -0.04
    21  12.3045      0.00     0.06       0.00    -0.04
    22  14.1764      0.00     0.16       0.00     0.07

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.

06QH181    quality flag:3

Type:     13:4EEEEEE13:4EEEEEE13:4EEEEEE

axisobj        66.456    66.456    66.456
ecceobj         0.415     0.415     0.415
incobj         19.055    19.055    19.055
qmin           37.568    37.566    37.567
qmax           95.976    95.961    95.986
amean          66.062    66.062    66.062
amin           65.270    65.267    65.268
amax           67.152    67.156    67.148
emean           0.416     0.416     0.416
emin            0.403     0.403     0.403
emax            0.431     0.431     0.431
imean          18.060    18.060    18.059
imin           17.470    17.469    17.471
imax           18.586    18.587    18.584
excite_mean     0.519     0.519     0.519
fracstop        1.000     1.000     1.000
cjmean          3.017     3.017     3.017

libcent 0       178.6     178.9     178.1
libamp  0        81.8      81.9      81.4
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       198.9     198.9     198.7
kozaiamp        180.0     180.0     180.0