Orbit Fit and Astrometric record for 03QW113

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: 03QW113   
# Created Thu Oct 18 01:08:16 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   48 observations of   48
# Arc:  12.08y
# First observation: 2003/06/23
#  Last observation: 2015/07/23
# Chi-squared of fit:   178.30 DOF:   90 RMS:  0.34
# Min/Max residuals:    -1.36    1.01
# Exact a, adot, b, bdot, g, gdot:
  1.753744E-05  2.746700E-02 -3.294286E-06 -3.224716E-03  2.659297E-02 -1.235326E-02
# Covariance matrix:
  1.8680E-13 -5.3661E-14 -8.0160E-15  5.5944E-15  5.0336E-14 -1.1047E-13
 -5.3661E-14  3.6624E-14  5.8885E-15 -4.3397E-15  1.3237E-14  8.7009E-14
 -8.0160E-15  5.8885E-15  1.0582E-13 -1.0512E-14  4.3840E-16  1.4522E-14
  5.5944E-15 -4.3397E-15 -1.0512E-14  1.6944E-15 -1.0775E-15 -1.0671E-14
  5.0336E-14  1.3237E-14  4.3840E-16 -1.0775E-15  1.6561E-13  2.5682E-14
 -1.1047E-13  8.7009E-14  1.4522E-14 -1.0671E-14  2.5682E-14  2.1377E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.605017  -31.556996    0.853016    0.015679   -0.559856  2452814.014743
# Heliocentric elements and errors
Epoch:              2452814.5000  =  2003/06/24
Mean Anomaly:          324.79332 +/-     0.005
Argument of Peri:      254.52330 +/-     0.005
Long of Asc Node:      160.28226 +/-     0.000
Inclination:             6.93522 +/-     0.000
Eccentricity:         0.48490095 +/-    0.0000
Semi-Major Axis:     50.85989257 +/-    0.0046
Time of Perihelion: 2465770.8952 +/-      16.4
Perihelion:          26.19788218 +/-    0.0028
Aphelion:            75.52190297 +/-    0.0070
Period (y)              362.7199 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.05919004 +/-    0.0005
Ecliptic Y          -20.68762189 +/-    0.0003
Ecliptic Z            1.05316841 +/-    0.0000
Ecliptic XDOT         0.00039878 +/-    0.0000
Ecliptic YDOT         0.00306483 +/-    0.0000
Ecliptic ZDOT        -0.00036730 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.16936742 +/-    0.0004
Geocenter to KBO     37.60422550 +/-    0.0006
# Hcoef:  7.33

The following table shows the complete astrometric record for 03QW113. 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 (03QW113) followed by the observatory code and reference code for the source of the astrometry.

2003 06  23.51400  22 00 08.05   -10 30 33.6   23.8i 03QW113   568  Cq9889      
2003 06  23.56540  22 00 07.95   -10 30 34.3   23.4i 03QW113   568  Cq9889      
2003 06  23.61406  22 00 07.85   -10 30 34.8   23.5i 03QW113   568  Cq9889      
2003 08  31.32283  21 55 20.38   -10 57 23.6   23.6g 03QW113   568  Cq9889      
2003 08  31.35679  21 55 20.21   -10 57 24.7   23.4g 03QW113   568  Cq9889      
2003 08  31.38376  21 55 20.06   -10 57 25.4   23.0g 03QW113   568  Cq9889      
2004 08  12.40035  22 03 13.74   -10 26 17.6   23.1r 03QW113   568  Cq9889      
2004 08  12.43057  22 03 13.60   -10 26 18.0   23.2r 03QW113   568  Cq9889      
2004 08  12.46510  22 03 13.44   -10 26 19.1   22.9r 03QW113   568  Cq9889      
2005 07  08.57313  22 12 15.51   -09 48 13.0   22.5r 03QW113   568  Cq9889      
2005 07  08.60678  22 12 15.41   -09 48 13.7   22.7r 03QW113   568  Cq9889      
2005 07  09.53811  22 12 12.36   -09 48 31.2   22.5r 03QW113   568  Cq9889      
2006 07  30.31276  22 17 33.01   -09 31 37.1   22.2R 03QW113   250  S~06Ad      
2006 07  30.36765  22 17 32.76   -09 31 38.6         03QW113   250  S~06Ad      
2006 07  30.37204  22 17 32.74   -09 31 38.7         03QW113   250  S~06Ad      
2006 07  30.37644  22 17 32.72   -09 31 38.8         03QW113   250  S~06Ad      
2008 06  07.36117  22 33 30.23   -08 25 07.4         03QW113   807  Cz1375      
2008 06  08.26699  22 33 30.23   -08 25 08.7         03QW113   807  Cz1375      
2008 06  08.33606  22 33 30.21   -08 25 08.8         03QW113   807  Cz1375      
2014 07  26.58299  23 17 50.053  -05 25 41.13  22.5w 03QW113   F51  C~1vVG      
2014 07  26.59238  23 17 50.015  -05 25 41.37  22.2w 03QW113   F51  C~1vVG      
2014 07  26.61112  23 17 49.928  -05 25 41.92  22.3w 03QW113   F51  C~1vVG      
2014 08  03.53401  23 17 20.600  -05 29 18.35  22.4w 03QW113   F51  C~1vVG      
2014 08  03.54533  23 17 20.550  -05 29 18.61  22.5w 03QW113   F51  C~1vVG      
2014 08  03.55662  23 17 20.514  -05 29 19.00  22.3w 03QW113   F51  C~1vVG      
2014 08  03.56794  23 17 20.462  -05 29 19.38  22.8w 03QW113   F51  C~1vVG      
2014 08  04.52490  23 17 16.584  -05 29 47.65  22.5w 03QW113   F51  C~1vVG      
2014 08  04.53626  23 17 16.549  -05 29 47.63  22.6w 03QW113   F51  C~1vVG      
2014 08  04.54760  23 17 16.489  -05 29 47.84  22.6w 03QW113   F51  C~1vVG      
2014 08  04.55894  23 17 16.444  -05 29 48.24  22.6w 03QW113   F51  C~1vVG      
2014 08  05.52668  23 17 12.463  -05 30 17.37  22.5w 03QW113   F51  C~1vVG      
2014 08  05.53807  23 17 12.432  -05 30 17.76  22.3w 03QW113   F51  C~1vVG      
2014 08  05.54945  23 17 12.384  -05 30 17.76  22.7w 03QW113   F51  C~1vVG      
2014 08  23.48794  23 15 48.482  -05 40 12.11  22.3w 03QW113   F51  C~1vVG      
2014 08  23.49952  23 15 48.433  -05 40 12.35  22.4w 03QW113   F51  C~1vVG      
2014 08  23.51112  23 15 48.354  -05 40 13.13  22.5w 03QW113   F51  C~1vVG      
2014 08  23.52273  23 15 48.300  -05 40 13.31  22.4w 03QW113   F51  C~1vVG      
2014 09  17.33426  23 13 34.948  -05 55 28.50  22.2w 03QW113   F51  C~1vVG      
2014 09  17.34612  23 13 34.860  -05 55 29.10  22.4w 03QW113   F51  C~1vVG      
2014 09  17.35799  23 13 34.807  -05 55 29.30  22.2w 03QW113   F51  C~1vVG      
2014 09  19.32878  23 13 24.182  -05 56 41.53  22.6w 03QW113   F51  C~1vVG      
2014 09  19.34023  23 13 24.131  -05 56 41.62  22.3w 03QW113   F51  C~1vVG      
2014 09  19.35166  23 13 24.052  -05 56 41.88  22.6w 03QW113   F51  C~1vVG      
2014 09  19.36310  23 13 23.985  -05 56 42.59  22.1w 03QW113   F51  C~1vVG      
2015 07  23.50495  23 26 21.669  -04 47 50.79  22.2w 03QW113   F51  C~1vVG      
2015 07  23.51712  23 26 21.632  -04 47 51.17  22.6w 03QW113   F51  C~1vVG      
2015 07  23.52921  23 26 21.594  -04 47 51.00  22.3w 03QW113   F51  C~1vVG      
2015 07  23.54140  23 26 21.555  -04 47 51.59  22.3w 03QW113   F51  C~1vVG      

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    -0.31       0.00     0.19
  2   0.0001      0.00    -0.02       0.00     0.10
  3   0.0003      0.00     0.19       0.00     0.17
  4   0.1884      0.00    -0.27       0.00    -0.15
  5   0.1885      0.00    -0.28       0.00    -0.28
  6   0.1886      0.00    -0.52       0.00    -0.20
  7   1.1386      0.00    -0.06       0.00    -0.02
  8   1.1387      0.00     0.13       0.00     0.45
  9   1.1388      0.00     0.35       0.00     0.35
 10   2.0426      0.00     0.21       0.00     0.20
 11   2.0427      0.00     0.39       0.00     0.13
 12   2.0452      0.00     0.27       0.00     0.24
 13   3.1014      0.00     1.01       0.00    -0.10
 14   3.1016      0.00     0.94       0.00    -0.12
 15   3.1016      0.00     0.94       0.00    -0.11
 16   3.1016      0.00     0.93       0.00    -0.09
 17   4.9578      0.00    -0.28       0.00     0.03
 18   4.9603      0.00    -1.12       0.00    -0.53
 19   4.9605      0.00    -1.36       0.00    -0.55
 20  11.0912      0.00     0.22       0.00    -0.01
 21  11.0912      0.00     0.14       0.00    -0.01
 22  11.0913      0.00    -0.18       0.00    -0.08
 23  11.1130      0.00     0.17       0.00     0.06
 24  11.1130      0.00     0.12       0.00     0.13
 25  11.1131      0.00     0.28       0.00     0.07
 26  11.1131      0.00     0.19       0.00     0.02
 27  11.1157      0.00    -0.01       0.00    -0.14
 28  11.1157      0.00     0.18       0.00     0.21
 29  11.1158      0.00    -0.01       0.00     0.34
 30  11.1158      0.00     0.03       0.00     0.27
 31  11.1184      0.00    -0.04       0.00    -0.02
 32  11.1185      0.00     0.22       0.00    -0.07
 33  11.1185      0.00     0.23       0.00     0.27
 34  11.1676      0.00     0.17       0.00     0.20
 35  11.1677      0.00     0.35       0.00     0.38
 36  11.1677      0.00     0.07       0.00     0.01
 37  11.1677      0.00     0.17       0.00     0.24
 38  11.2356      0.00    -0.05       0.00    -0.26
 39  11.2357      0.00    -0.39       0.00    -0.42
 40  11.2357      0.00    -0.20       0.00    -0.19
 41  11.2411      0.00     0.16       0.00    -0.31
 42  11.2411      0.00     0.34       0.00     0.02
 43  11.2412      0.00     0.09       0.00     0.17
 44  11.2412      0.00     0.03       0.00    -0.12
 45  12.0821      0.00    -0.06       0.00     0.01
 46  12.0821      0.00    -0.06       0.00    -0.08
 47  12.0822      0.00    -0.08       0.00     0.37
 48  12.0822      0.00    -0.11       0.00     0.06

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.

03QW113    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        51.538    51.538    51.539
ecceobj         0.489     0.489     0.489
incobj          6.908     6.908     6.908
qmin           25.511    25.677    25.528
qmax           76.946    76.749    79.007
amean          49.842    49.578    50.454
amin           48.092    48.491    48.487
amax           51.566    51.538    52.669
emean           0.477     0.474     0.483
emin            0.463     0.461     0.463
emax            0.492     0.489     0.500
imean           5.307     6.019     4.877
imin            4.806     5.704     4.478
imax            6.181     6.264     6.206
excite_mean     0.486     0.485     0.490
fracstop        0.011     0.014     0.017
cjmean          2.857     2.857     2.857

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       275.7     276.4     285.6
kozaiamp         19.1      21.1      25.8