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 Sun Dec  5 02:09:40 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     37 observations of     37
# Arc:  15.15y
# First observation: 2003/08/25
#  Last observation: 2018/10/18
# Chi-squared of fit:    28.66 DOF:     68 RMS:  0.16
# Min/Max residuals:    -0.60    0.40
# Exact a, adot, b, bdot, g, gdot:
  1.465163E-05  2.385746E-02 -8.305320E-07 -2.019687E-04  2.429205E-02  7.973340E-04
# Covariance matrix:
  1.7966E-13 -2.2245E-14 -2.4322E-16  1.0294E-16  5.2029E-14 -3.6163E-14
 -2.2245E-14  2.4806E-14  1.7802E-16 -2.0625E-16  4.3104E-14  6.6390E-14
 -2.4322E-16  1.7802E-16  1.4344E-13 -1.1218E-14 -4.6768E-17  5.2706E-16
  1.0294E-16 -2.0625E-16 -1.1218E-14  1.1937E-15 -3.6112E-16 -5.8095E-16
  5.2029E-14  4.3104E-14 -4.6768E-17 -3.6112E-16  2.4625E-13  1.0921E-13
 -3.6163E-14  6.6390E-14  5.2706E-16 -5.8095E-16  1.0921E-13  1.8751E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.968394   -3.582584    0.427292   -0.047627   -0.919599  2452876.779843
# Heliocentric elements and errors
Epoch:              2452876.5000  =  2003/08/25
Mean Anomaly:           39.87720 +/-     0.070
Argument of Peri:      217.50695 +/-     0.075
Long of Asc Node:       95.97882 +/-     0.002
Inclination:             2.94959 +/-     0.000
Eccentricity:         0.03283059 +/-    0.0000
Semi-Major Axis:     43.15176646 +/-    0.0033
Time of Perihelion: 2441407.6883 +/-      20.1
Perihelion:          41.73506855 +/-    0.0036
Aphelion:            44.56846438 +/-    0.0038
Period (y)              283.4693 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.91969903 +/-    0.0008
Ecliptic Y           -3.04865217 +/-    0.0001
Ecliptic Z           -2.13182261 +/-    0.0000
Ecliptic XDOT         0.00025116 +/-    0.0000
Ecliptic YDOT         0.00267236 +/-    0.0000
Ecliptic ZDOT        -0.00002721 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.08442655 +/-    0.0008
Geocenter to KBO     41.16573671 +/-    0.0008
# Hcoef:  7.01

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      
2013 10  13.15009  00 38 06.427  +00 49 40.60  22.7i 03QY111   W84  C~4yD2      
2013 11  23.12179  00 35 38.374  +00 35 37.72  23.4r 03QY111   W84  C~4yD2      
2013 11  23.12459  00 35 38.361  +00 35 37.84  23.1i 03QY111   W84  C~4yD2      
2014 11  13.07078  00 41 03.491  +01 09 57.86  24.0r 03QY111   W84  C~4yD2      
2014 11  14.13129  00 41 00.075  +01 09 39.75  23.0i 03QY111   W84  C~4yD2      
2016 09  01.37155  00 55 51.011  +02 44 12.46  23.1i 03QY111   W84  C~4yD2      
2016 09  01.37293  00 55 51.011  +02 44 12.15  23.1r 03QY111   W84  C~4yD2      
2016 11  05.19246  00 51 20.938  +02 15 50.25  23.4r 03QY111   W84  C~4yD2      
2016 11  05.19523  00 51 20.933  +02 15 49.98  24.8g 03QY111   W84  C~4yD2      
2016 11  06.15830  00 51 17.323  +02 15 29.85  22.4z 03QY111   W84  C~4yD2      
2017 08  28.28539  01 01 00.570  +03 17 21.87  22.8i 03QY111   W84  C~4yD2      
2017 08  28.28676  01 01 00.569  +03 17 22.02  23.4r 03QY111   W84  C~4yD2      
2017 09  18.29705  00 59 43.521  +03 08 35.11  23.9r 03QY111   W84  C~4yD2      
2017 09  24.28844  00 59 18.296  +03 05 50.54  23.0i 03QY111   W84  C~4yD2      
2017 09  27.23772  00 59 05.545  +03 04 28.50  22.8z 03QY111   W84  C~4yD2      
2017 10  28.16086  00 56 49.86   +02 50 37.1         03QY111   G37  C~3cWO      
2017 10  28.20697  00 56 49.69   +02 50 36.1         03QY111   G37  C~3cWO      
2017 10  28.29590  00 56 49.29   +02 50 33.9         03QY111   G37  C~3cWO      
2018 09  14.33468  01 04 56.663  +03 41 55.76  23.0i 03QY111   W84  C~4yD2      
2018 09  14.33605  01 04 56.647  +03 41 56.07  24.2g 03QY111   W84  C~4yD2      
2018 09  21.28671  01 04 28.529  +03 38 51.07  23.0z 03QY111   W84  C~4yD2      
2018 10  18.20031  01 02 30.287  +03 26 31.72  23.0z 03QY111   W84  C~4yD2      

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     0.11       0.00     0.20
     2   0.0003      0.00     0.23       0.00     0.02
     3   0.0242      0.00    -0.60       0.00    -0.10
     4   0.0244      0.00    -0.04       0.00     0.27
     5   0.1585      0.00     0.00       0.00    -0.02
     6   0.1587      0.00     0.14       0.00    -0.05
     7   0.9693      0.00     0.04       0.00    -0.08
     8   0.9695      0.00    -0.06       0.00     0.08
     9   1.1306      0.00    -0.19       0.00     0.04
    10   1.1308      0.00     0.40       0.00    -0.20
    11   7.0613      0.00     0.12       0.00    -0.04
    12   7.0614      0.00    -0.32       0.00     0.12
    13  10.1137      0.00     0.07       0.00    -0.30
    14  10.1139      0.00     0.06       0.00    -0.06
    15  10.1166      0.00     0.17       0.00     0.17
    16  10.1352      0.00     0.17       0.00    -0.23
    17  10.2473      0.00     0.14       0.00    -0.14
    18  10.2474      0.00     0.06       0.00     0.01
    19  11.2191      0.00    -0.02       0.00    -0.13
    20  11.2220      0.00    -0.14       0.00    -0.00
    21  13.0215      0.00    -0.07       0.00     0.17
    22  13.0215      0.00     0.01       0.00    -0.11
    23  13.1989      0.00    -0.08       0.00     0.08
    24  13.1989      0.00    -0.00       0.00    -0.13
    25  13.2016      0.00     0.12       0.00     0.07
    26  14.0096      0.00     0.04       0.00     0.04
    27  14.0096      0.00     0.09       0.00     0.22
    28  14.0671      0.00     0.07       0.00    -0.05
    29  14.0835      0.00    -0.03       0.00    -0.01
    30  14.0916      0.00    -0.15       0.00     0.03
    31  14.1763      0.00    -0.20       0.00    -0.02
    32  14.1764      0.00     0.17       0.00     0.09
    33  14.1766      0.00    -0.19       0.00     0.04
    34  15.0556      0.00     0.04       0.00    -0.26
    35  15.0556      0.00    -0.12       0.00     0.09
    36  15.0746      0.00     0.13       0.00     0.27
    37  15.1483      0.00     0.01       0.00     0.01

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        43.602    43.602    43.602
ecceobj         0.041     0.041     0.041
incobj          2.950     2.950     2.950
qmin           40.995    40.998    40.999
qmax           45.947    45.947    45.948
amean          43.361    43.361    43.361
amin           43.028    43.026    43.029
amax           43.712    43.712    43.712
emean           0.035     0.035     0.035
emin            0.015     0.015     0.015
emax            0.051     0.051     0.051
imean           1.361     1.361     1.361
imin            0.414     0.414     0.414
imax            2.070     2.071     2.070
excite_mean     0.044     0.044     0.044
fracstop        1.000     1.000     1.000
cjmean          3.092     3.092     3.092

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       170.0     170.0     169.8
kozaiamp        180.0     180.0     180.0