Orbit Fit and Astrometric record for 03QX111

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: 03QX111   
# Created Tue Oct 24 01:37:24 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   21
# Arc:   7.12y
# First observation: 2003/08/25
#  Last observation: 2010/10/09
Preliminary a, adot, b, bdot, g, gdot:
   0.000089   0.025198  -0.000017  -0.003993   0.026033   0.000000
# Chi-squared of fit:    66.93 DOF:   36 RMS:  0.32
# Min/Max residuals:    -0.59    0.67
# Exact a, adot, b, bdot, g, gdot:
  1.547298E-05  2.553786E-02 -3.417307E-06 -4.055097E-03  2.605506E-02  3.769118E-03
# Covariance matrix:
  2.2142E-13 -2.3939E-14 -1.3717E-15  3.5691E-15  2.3023E-13 -1.5026E-13
 -2.3939E-14  1.5057E-13  9.0069E-15 -2.3970E-14  1.2594E-13  9.5238E-13
 -1.3717E-15  9.0069E-15  1.1732E-13 -2.4375E-14  5.2773E-15  6.3338E-14
  3.5691E-15 -2.3970E-14 -2.4375E-14  1.5493E-14 -1.4225E-14 -1.6845E-13
  2.3023E-13  1.2594E-13  5.2773E-15 -1.4225E-14  6.2477E-13  5.4651E-13
 -1.5026E-13  9.5238E-13  6.3338E-14 -1.6845E-13  5.4651E-13  6.7043E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.071006   -3.702377    0.425365   -0.049321   -0.920403  2452876.779843
# Heliocentric elements and errors
Epoch:              2452870.5000  =  2003/08/19
Mean Anomaly:           83.91194 +/-     0.053
Argument of Peri:       99.29230 +/-     0.037
Long of Asc Node:      157.54158 +/-     0.001
Inclination:             9.55234 +/-     0.000
Eccentricity:         0.13217094 +/-    0.0001
Semi-Major Axis:     39.16373518 +/-    0.0044
Time of Perihelion: 2432004.1810 +/-      12.6
Perihelion:          33.98742756 +/-    0.0053
Aphelion:            44.34004280 +/-    0.0062
Period (y)              245.0949 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.13469691 +/-    0.0012
Ecliptic Y           -2.95458023 +/-    0.0001
Ecliptic Z           -2.05631421 +/-    0.0001
Ecliptic XDOT         0.00053992 +/-    0.0000
Ecliptic YDOT         0.00264811 +/-    0.0000
Ecliptic ZDOT        -0.00044654 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.29990426 +/-    0.0012
Geocenter to KBO     38.38025728 +/-    0.0012
# Hcoef:  6.53

The following table shows the complete astrometric record for 03QX111. 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 (03QX111) followed by the observatory code and reference code for the source of the astrometry.

2003 08  25.27910  23 51 17.94   -04 17 23.4   21.5R 03QX111   807  Ci4592      
2003 08  25.38190  23 51 17.51   -04 17 26.4         03QX111   807  Ci4592      
2003 09  03.12975  23 50 39.90   -04 22 09.0   21.8R 03QX111   304  Ci4592      
2003 09  03.20133  23 50 39.58   -04 22 11.1         03QX111   304  Ci4592      
2003 10  01.43108  23 48 28.39   -04 37 35.3         03QX111   568  Ci6969      
2003 10  01.45900  23 48 28.22   -04 37 36.4         03QX111   568  Ci6969      
2003 10  02.45350  23 48 23.66   -04 38 06.6         03QX111   568  Ci6969      
2003 10  02.49893  23 48 23.44   -04 38 08.4         03QX111   568  Ci6969      
2003 10  22.15921  23 46 59.64   -04 47 17.2   22.3R 03QX111   695  Cj4700      
2003 10  22.25323  23 46 59.29   -04 47 19.6         03QX111   695  Cj4700      
2004 08  13.31483  23 57 43.29   -03 49 44.5   21.5R 03QX111   807  Cl8405      
2004 08  13.38706  23 57 43.04   -03 49 46.6         03QX111   807  Cl8405      
2004 10  11.22454  23 53 25.38   -04 20 45.1   22.5R 03QX111   695  Cl8405      
2004 10  11.31501  23 53 24.97   -04 20 48.0         03QX111   695  Cl8405      
2007 10  11.30400  00 10 25.70   -03 14 12.1   22.9R 03QX111   688  Cw0394      
2007 10  11.36328  00 10 25.44   -03 14 14.3         03QX111   688  Cw0394      
2008 10  30.265780 00 14 38.45   -03 00 42.7   22.8V 03QX111   645  C~2Jx8      
2008 10  30.266609 00 14 38.46   -03 00 42.7   21.4V 03QX111   645  C~2Jx8      
2008 10  30.269097 00 14 38.45   -03 00 42.7   23.3V 03QX111   645  C~2Jx8      
2010 10  09.19942  00 27 12.39   -02 07 02.0   23.0R 03QX111   688  C~0Nhh      
2010 10  09.26098  00 27 12.11   -02 07 03.3         03QX111   688  C~0Nhh      

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     0.01       0.00     0.20
  2   0.0003     -7.09     0.13      -0.19     0.40
  3   0.0242   -635.64     0.36     -35.58    -0.44
  4   0.0244   -640.86     0.52     -35.60    -0.23
  5   0.1017  -2808.55     0.03    -103.77    -0.19
  6   0.1018  -2811.32    -0.59    -103.77    -0.17
  7   0.1045  -2885.89    -0.21    -104.41     0.36
  8   0.1046  -2889.63    -0.48    -104.76     0.04
  9   0.1585  -4257.72    -0.06    -111.23     0.04
 10   0.1587  -4263.47     0.15    -111.36    -0.18
 11   0.9693   5950.48    -0.14    -779.55     0.05
 12   0.9695   5946.21    -0.10    -779.98    -0.04
 13   1.1306   1668.08     0.48    -944.41     0.44
 14   1.1308   1661.29     0.22    -944.63     0.20
 15   4.1287  17300.74    -0.49   -3418.16     0.20
 16   4.1289  17296.26    -0.55   -3418.60    -0.28
 17   5.1827  21125.37     0.11   -4212.26    -0.39
 18   5.1827  21125.51     0.30   -4212.32    -0.45
 19   5.1827  21125.37     0.31   -4212.26    -0.40
 20   7.1237  32968.34    -0.15   -5878.68     0.18
 21   7.1238  32963.86     0.17   -5878.15     0.67

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.

03QX111    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.532    39.546    39.518
ecceobj         0.132     0.132     0.132
incobj          9.514     9.514     9.514
qmin           32.950    32.973    33.000
qmax           46.486    46.334    46.430
amean          39.457    39.457    39.457
amin           39.047    39.051    39.034
amax           39.911    39.898    39.913
emean           0.142     0.143     0.143
emin            0.122     0.123     0.122
emax            0.165     0.163     0.163
imean           8.965     8.917     8.949
imin            8.151     8.118     8.188
imax            9.826     9.738     9.753
excite_mean     0.211     0.211     0.211
fracstop        1.000     1.000     1.000
cjmean          3.002     3.002     3.001

libcent 0       181.0     179.6     180.8
libamp  0        78.3      72.3      85.3
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       181.0     180.1     182.1
kozaiamp        180.0     180.0     179.9