Orbit Fit and Astrometric record for 06QS180

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: 06QS180   
# Created Fri Mar 29 01:12:48 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     19 observations of     19
# Arc:  12.05y
# First observation: 2005/07/07
#  Last observation: 2017/07/27
# Chi-squared of fit:     6.76 DOF:     32 RMS:  0.11
# Min/Max residuals:    -0.26    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.692135E-05  2.560939E-02  7.822278E-06  1.322682E-02  2.568369E-02 -3.466718E-03
# Covariance matrix:
  1.6935E-13 -3.7820E-14  1.0845E-14 -1.5164E-14  1.0504E-13 -1.0004E-13
 -3.7820E-14  8.2534E-14 -2.7957E-14  4.0485E-14  7.6586E-14  2.6039E-13
  1.0845E-14 -2.7957E-14  1.1790E-13 -2.9018E-14 -2.2998E-14 -9.6193E-14
 -1.5164E-14  4.0485E-14 -2.9018E-14  2.7874E-14  3.4584E-14  1.3911E-13
  1.0504E-13  7.6586E-14 -2.2998E-14  3.4584E-14  3.8231E-13  2.1648E-13
 -1.0004E-13  2.6039E-13 -9.6193E-14  1.3911E-13  2.1648E-13  8.9557E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.278253  -59.380183    0.264045    0.004845   -0.981999  2453558.925877
# Heliocentric elements and errors
Epoch:              2453558.5000  =  2005/07/07
Mean Anomaly:          344.57163 +/-     0.005
Argument of Peri:       30.91802 +/-     0.009
Long of Asc Node:      299.71031 +/-     0.000
Inclination:            27.36057 +/-     0.000
Eccentricity:         0.31258289 +/-    0.0001
Semi-Major Axis:     56.17562312 +/-    0.0081
Time of Perihelion: 2460149.2949 +/-      31.9
Perihelion:          38.61608433 +/-    0.0072
Aphelion:            73.73516192 +/-    0.0116
Period (y)              421.0465 +/-      0.09
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           20.10027315 +/-    0.0005
Ecliptic Y          -34.48619737 +/-    0.0008
Ecliptic Z            0.18942842 +/-    0.0000
Ecliptic XDOT         0.00215883 +/-    0.0000
Ecliptic YDOT         0.00170741 +/-    0.0000
Ecliptic ZDOT         0.00140819 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.91693246 +/-    0.0007
Geocenter to KBO     38.93532714 +/-    0.0009
# Hcoef:  7.12

The following table shows the complete astrometric record for 06QS180. 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 (06QS180) followed by the observatory code and reference code for the source of the astrometry.

2005 07  07.425134 20 11 02.93   -19 44 46.2   23.3g 06QS180   T14  C~63Rc      
2005 07  07.451658 20 11 02.81   -19 44 46.6         06QS180   T14  C~63Rc      
2005 07  07.478225 20 11 02.67   -19 44 46.7         06QS180   T14  C~63Rc      
2005 09  30.221509 20 05 08.36   -19 52 22.6   22.8i 06QS180   T14  C~63Rc      
2005 09  30.266857 20 05 08.29   -19 52 22.5         06QS180   T14  C~63Rc      
2005 09  30.313143 20 05 08.23   -19 52 22.3         06QS180   T14  C~63Rc      
2006 06  26.477057 20 17 19.65   -18 39 31.7   23.1r 06QS180   T09  C~63Rc      
2006 06  26.479185 20 17 19.63   -18 39 31.6         06QS180   T09  C~63Rc      
2006 07  19.391077 20 15 25.03   -18 42 36.8   23.0i 06QS180   T14  C~63Rc      
2006 07  19.420816 20 15 24.86   -18 42 37.2         06QS180   T14  C~63Rc      
2006 07  19.443545 20 15 24.73   -18 42 37.3         06QS180   T14  C~63Rc      
2006 07  19.463982 20 15 24.63   -18 42 37.5         06QS180   T14  C~63Rc      
2006 07  20.411110 20 15 19.64   -18 42 46.4   22.7i 06QS180   T14  C~63Rc      
2006 08  21.14861  20 12 37.67   -18 47 30.2   22.4R 06QS180   807  Cs5501      
2006 08  21.24084  20 12 37.25   -18 47 30.8         06QS180   807  Cs5501      
2006 08  22.14317  20 12 33.12   -18 47 37.7         06QS180   807  Cs5501      
2013 09  26.035661 20 47 15.82   -11 06 11.6   23.8g 06QS180   W84  C~63Rc      
2013 09  26.050911 20 47 15.79   -11 06 11.8         06QS180   W84  C~63Rc      
2017 07  27.191767 21 12 21.24   -06 07 23.7   23.2r 06QS180   W84  C~63Rc      

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    -0.26       0.00     0.01
     2   0.0001      0.00     0.00       0.00    -0.17
     3   0.0001      0.00    -0.03       0.00    -0.05
     4   0.2322      0.00     0.02       0.00    -0.03
     5   0.2323      0.00    -0.04       0.00    -0.06
     6   0.2324      0.00     0.07       0.00     0.00
     7   0.9693      0.00     0.06       0.00    -0.09
     8   0.9693      0.00    -0.09       0.00     0.02
     9   1.0321      0.00     0.19       0.00     0.07
    10   1.0322      0.00     0.04       0.00    -0.05
    11   1.0322      0.00    -0.08       0.00     0.06
    12   1.0323      0.00     0.07       0.00     0.05
    13   1.0349      0.00     0.18       0.00    -0.15
    14   1.1218      0.00    -0.17       0.00     0.08
    15   1.1220      0.00     0.02       0.00     0.18
    16   1.1245      0.00     0.07       0.00     0.23
    17   8.2207      0.00    -0.11       0.00    -0.07
    18   8.2207      0.00     0.07       0.00    -0.09
    19  12.0541      0.00     0.01       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.

06QS180    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        56.321    56.321    56.321
ecceobj         0.316     0.316     0.316
incobj         27.350    27.350    27.350
qmin           37.273    37.331    37.294
qmax           76.271    76.212    76.178
amean          56.222    56.217    56.322
amin           55.553    55.537    55.744
amax           57.073    57.055    57.053
emean           0.318     0.317     0.319
emin            0.301     0.298     0.301
emax            0.336     0.336     0.336
imean          28.661    28.686    28.679
imin           28.246    28.245    28.262
imax           29.227    29.281    29.272
excite_mean     0.576     0.575     0.577
fracstop        1.000     1.000     1.000
cjmean          2.808     2.808     2.807

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       163.2     160.5     159.5
kozaiamp        179.9     179.9     179.9