Orbit Fit and Astrometric record for 03QE112

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: 03QE112   
# Created Thu Dec  9 02:09:40 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     16 observations of     16
# Arc:  18.11y
# First observation: 2003/08/26
#  Last observation: 2021/10/03
# Chi-squared of fit:    26.77 DOF:     26 RMS:  0.23
# Min/Max residuals:    -0.44    0.46
# Exact a, adot, b, bdot, g, gdot:
  1.556044E-05  2.094912E-02 -8.013054E-07 -9.178410E-04  2.281781E-02 -2.482486E-04
# Covariance matrix:
  1.7199E-13 -2.9947E-14 -2.3609E-15  1.0287E-15  7.0697E-14 -6.1660E-14
 -2.9947E-14  3.7755E-14  7.4237E-16 -1.5918E-15  1.7986E-14  9.5875E-14
 -2.3609E-15  7.4237E-16  1.3845E-13 -9.0396E-15 -6.8888E-15  2.5091E-15
  1.0287E-15 -1.5918E-15 -9.0396E-15  1.7398E-15 -4.0001E-16 -4.2584E-15
  7.0697E-14  1.7986E-14 -6.8888E-15 -4.0001E-16  3.1414E-13  2.5220E-14
 -6.1660E-14  9.5875E-14  2.5091E-15 -4.2584E-15  2.5220E-14  2.5639E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.486718  -32.041921   -0.076728   -0.061505   -1.010164  2452877.582073
# Heliocentric elements and errors
Epoch:              2452878.5000  =  2003/08/27
Mean Anomaly:          193.58366 +/-     0.038
Argument of Peri:       41.33715 +/-     0.030
Long of Asc Node:       94.43160 +/-     0.001
Inclination:             4.23044 +/-     0.000
Eccentricity:         0.04780182 +/-    0.0001
Semi-Major Axis:     42.83596172 +/-    0.0038
Time of Perihelion: 2500215.9296 +/-      13.2
Perihelion:          40.78832465 +/-    0.0047
Aphelion:            44.88359879 +/-    0.0050
Period (y)              280.3632 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.97640327 +/-    0.0009
Ecliptic Y          -23.67577319 +/-    0.0006
Ecliptic Z           -2.66537711 +/-    0.0001
Ecliptic XDOT         0.00129746 +/-    0.0000
Ecliptic YDOT         0.00214430 +/-    0.0000
Ecliptic ZDOT        -0.00010794 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.83139844 +/-    0.0008
Geocenter to KBO     43.82546392 +/-    0.0011
# Hcoef:  6.46

The following table shows the complete astrometric record for 03QE112. 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 (03QE112) followed by the observatory code and reference code for the source of the astrometry.

2003 08  26.08133  22 05 31.44   -15 27 10.1   21.5R 03QE112   807  Ci6969      
2003 08  26.17293  22 05 31.04   -15 27 12.3         03QE112   807  Ci6969      
2003 10  01.29139  22 03 07.44   -15 39 11.8   22.9R 03QE112   568  Ci6969      
2003 10  01.36147  22 03 07.23   -15 39 12.7         03QE112   568  Ci6969      
2003 10  02.31399  22 03 04.19   -15 39 26.2         03QE112   568  Ci6969      
2003 10  24.11421  22 02 11.08   -15 42 52.6   22.6R 03QE112   695  Cj4700      
2003 10  24.23136  22 02 10.87   -15 42 53.2         03QE112   695  Cj4700      
2004 05  28.26326  22 14 16.75   -14 37 21.3   23.0R 03QE112   304  Cl8405      
2004 05  28.39162  22 14 16.78   -14 37 21.9         03QE112   304  Cl8405      
2004 10  11.15897  22 07 18.24   -15 19 26.1   23.6R 03QE112   695  Cl8405      
2004 10  11.25182  22 07 17.97   -15 19 27.4         03QE112   695  Cl8405      
2013 10  06.29525  22 49 25.98   -11 43 36.6   22.5R 03QE112   695  C~0zdV      
2013 10  07.19845  22 49 22.79   -11 43 52.8         03QE112   695  C~0zdV      
2021 10  03.142320 23 26 12.570  -08 11 00.58  22.7G 03QE112   G37  C~553l      
2021 10  03.195300 23 26 12.325  -08 11 01.73        03QE112   G37  C~553l      
2021 10  03.248300 23 26 12.122  -08 11 02.93        03QE112   G37  C~553l      

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    -0.22       0.00    -0.04
     2   0.0003      0.00    -0.07       0.00    -0.05
     3   0.0991      0.00     0.13       0.00     0.10
     4   0.0993      0.00     0.46       0.00     0.21
     5   0.1019      0.00     0.45       0.00     0.25
     6   0.1616      0.00    -0.26       0.00     0.07
     7   0.1619      0.00    -0.44       0.00    -0.00
     8   0.7561      0.00     0.01       0.00     0.10
     9   0.7565      0.00    -0.02       0.00     0.02
    10   1.1282      0.00     0.12       0.00    -0.01
    11   1.1285      0.00    -0.18       0.00    -0.32
    12  10.1142      0.00     0.44       0.00    -0.36
    13  10.1167      0.00    -0.15       0.00    -0.27
    14  18.1056      0.00     0.19       0.00     0.05
    15  18.1057      0.00    -0.28       0.00     0.14
    16  18.1059      0.00    -0.10       0.00     0.17

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.

03QE112    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.182    43.182    43.182
ecceobj         0.040     0.040     0.040
incobj          4.231     4.231     4.231
qmin           39.900    39.906    39.892
qmax           46.528    46.520    46.534
amean          43.090    43.090    43.090
amin           42.758    42.759    42.758
amax           43.439    43.437    43.442
emean           0.051     0.051     0.051
emin            0.031     0.031     0.031
emax            0.071     0.071     0.071
imean           2.532     2.532     2.532
imin            1.558     1.557     1.558
imax            3.510     3.510     3.510
excite_mean     0.067     0.067     0.067
fracstop        1.000     1.000     1.000
cjmean          3.085     3.085     3.085

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       178.9     178.8     178.8
kozaiamp        179.9     179.9     180.0