Orbit Fit and Astrometric record for 03QY111

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: 03QY111   
# Created Tue Oct 24 01:37:24 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:  10.12y
# First observation: 2003/08/25
#  Last observation: 2013/10/06
Preliminary a, adot, b, bdot, g, gdot:
  -0.000222   0.024107   0.000003  -0.000207   0.024104   0.000000
# Chi-squared of fit:    17.50 DOF:   24 RMS:  0.19
# Min/Max residuals:    -0.59    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.463758E-05  2.385727E-02 -6.951111E-07 -2.020089E-04  2.429172E-02  7.965117E-04
# Covariance matrix:
  2.9264E-13 -1.1434E-13 -7.4220E-16  1.0807E-15  2.5270E-13 -4.6297E-13
 -1.1434E-13  1.8661E-13  8.5920E-16 -1.7298E-15 -1.5267E-14  8.1672E-13
 -7.4220E-16  8.5920E-16  1.6059E-13 -1.9072E-14 -9.3811E-16  3.9952E-15
  1.0807E-15 -1.7298E-15 -1.9072E-14  5.7286E-15  6.5296E-16 -7.8777E-15
  2.5270E-13 -1.5267E-14 -9.3811E-16  6.5296E-16  7.3239E-13 -1.6697E-13
 -4.6297E-13  8.1672E-13  3.9952E-15 -7.8777E-15 -1.6697E-13  3.7005E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.968394   -3.582584    0.427292   -0.047627   -0.919600  2452876.779843
# Heliocentric elements and errors
Epoch:              2452870.5000  =  2003/08/19
Mean Anomaly:           39.78698 +/-     0.120
Argument of Peri:      217.57832 +/-     0.130
Long of Asc Node:       95.98073 +/-     0.004
Inclination:             2.94960 +/-     0.000
Eccentricity:         0.03282555 +/-    0.0001
Semi-Major Axis:     43.15336179 +/-    0.0066
Time of Perihelion: 2441426.9996 +/-      34.6
Perihelion:          41.73682888 +/-    0.0083
Aphelion:            44.56989469 +/-    0.0086
Period (y)              283.4850 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.92025865 +/-    0.0014
Ecliptic Y           -3.04868778 +/-    0.0001
Ecliptic Z           -2.13184611 +/-    0.0001
Ecliptic XDOT         0.00025107 +/-    0.0000
Ecliptic YDOT         0.00267238 +/-    0.0000
Ecliptic ZDOT        -0.00002721 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.08500149 +/-    0.0014
Geocenter to KBO     41.16628502 +/-    0.0015
# Hcoef:  6.75

The following table shows the complete astrometric record for 03QY111. 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 (03QY111) followed by the observatory code and reference code for the source of the astrometry.

2003 08  25.27910  23 51 34.52   -04 08 53.1   22.2R 03QY111   807  Ci4592      
2003 08  25.38190  23 51 34.12   -04 08 56.1         03QY111   807  Ci4592      
2003 09  03.13413  23 50 58.52   -04 13 02.3   23.0R 03QY111   304  Ci4592      
2003 09  03.20601  23 50 58.25   -04 13 04.0         03QY111   304  Ci4592      
2003 10  22.15921  23 47 30.57   -04 35 00.5   22.5R 03QY111   695  Cj4700      
2003 10  22.25323  23 47 30.23   -04 35 02.5         03QY111   695  Cj4700      
2004 08  13.30947  23 57 16.35   -03 32 05.9   21.5R 03QY111   807  Cl8405      
2004 08  13.38192  23 57 16.10   -03 32 07.5         03QY111   807  Cl8405      
2004 10  11.21987  23 53 12.16   -03 59 13.1   23.0R 03QY111   695  Cl8405      
2004 10  11.31032  23 53 11.82   -03 59 15.6         03QY111   695  Cl8405      
2010 09  16.42927  00 25 07.34   -00 34 16.9   23.5R 03QY111   688  C~0NG0      
2010 09  16.47315  00 25 07.12   -00 34 18.0         03QY111   688  C~0NG0      
2013 10  05.32455  00 38 40.97   +00 53 16.1   22.8R 03QY111   695  C~0zdV      
2013 10  05.36866  00 38 40.77   +00 53 15.1         03QY111   695  C~0zdV      
2013 10  06.36532  00 38 36.35   +00 52 47.4         03QY111   695  C~0zdV      

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     0.18       0.00     0.12
  2   0.0003     -6.68     0.22      -0.37    -0.10
  3   0.0242   -593.25    -0.59     -14.29     0.12
  4   0.0244   -597.63     0.06     -14.25     0.23
  5   0.1585  -3971.52    -0.06      11.79    -0.05
  6   0.1587  -3976.98     0.06      11.97    -0.12
  7   0.9693   5573.06     0.04     -16.30    -0.11
  8   0.9695   5568.99     0.02     -16.27     0.08
  9   1.1306   1571.07    -0.17     -49.83     0.09
 10   1.1308   1565.41     0.28     -50.10    -0.36
 11   7.0613  33072.84     0.14    -320.22    -0.05
 12   7.0614  33069.29    -0.21    -319.89     0.27
 13  10.1137  46862.00    -0.12    -444.52    -0.25
 14  10.1139  46858.69    -0.03    -444.22    -0.02
 15  10.1166  46783.16     0.18    -442.77     0.15

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.

03QY111    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.603    43.623    43.583
ecceobj         0.041     0.041     0.040
incobj          2.950     2.950     2.950
qmin           40.969    40.991    40.980
qmax           45.951    45.971    45.915
amean          43.362    43.382    43.342
amin           43.028    43.047    43.013
amax           43.709    43.721    43.684
emean           0.035     0.035     0.034
emin            0.015     0.015     0.014
emax            0.052     0.052     0.051
imean           1.361     1.360     1.362
imin            0.415     0.421     0.408
imax            2.070     2.062     2.078
excite_mean     0.044     0.044     0.043
fracstop        1.000     1.000     1.000
cjmean          3.092     3.092     3.091

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       170.1     170.0     170.3
kozaiamp        179.9     180.0     180.0