Orbit Fit and Astrometric record for 02QX47

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: 02QX47    
# Created Mon Oct 23 01:37:21 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   67 observations of   67
# Arc:  11.10y
# First observation: 2002/08/26
#  Last observation: 2013/10/01
# Chi-squared of fit:   185.13 DOF:  128 RMS:  0.29
# Min/Max residuals:    -2.13    0.69
# Exact a, adot, b, bdot, g, gdot:
  2.904631E-05  1.049855E-01 -5.956496E-06  9.154081E-03  6.159875E-02  2.022717E-02
# Covariance matrix:
  2.1944E-13 -5.5005E-14  1.2693E-14 -3.9510E-15  4.4143E-14 -3.3997E-14
 -5.5005E-14  2.5535E-14 -3.7916E-15  2.0573E-15  2.3440E-14  1.6169E-14
  1.2693E-14 -3.7916E-15  8.3022E-14 -1.2064E-14  4.8493E-15 -3.0222E-15
 -3.9510E-15  2.0573E-15 -1.2064E-14  2.4144E-15  1.8712E-15  1.4365E-15
  4.4143E-14  2.3440E-14  4.8493E-15  1.8712E-15  1.5805E-13  1.0192E-14
 -3.3997E-14  1.6169E-14 -3.0222E-15  1.4365E-15  1.0192E-14  1.1494E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
    5.626190  -37.464175   -0.175098    0.097781   -0.993309  2452512.673013
# Heliocentric elements and errors
Epoch:              2452512.5000  =  2002/08/26
Mean Anomaly:           19.59943 +/-     0.000
Argument of Peri:        3.10947 +/-     0.000
Long of Asc Node:      276.65981 +/-     0.000
Inclination:             7.29269 +/-     0.000
Eccentricity:         0.37071760 +/-    0.0000
Semi-Major Axis:     25.33082608 +/-    0.0237
Time of Perihelion: 2449977.2931 +/-       3.6
Perihelion:          15.94024299 +/-    0.0150
Aphelion:            34.72140916 +/-    0.0325
Period (y)              127.4918 +/-      0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           13.72210183 +/-    0.0001
Ecliptic Y          -10.28961823 +/-    0.0001
Ecliptic Z            1.59149952 +/-    0.0000
Ecliptic XDOT         0.00350911 +/-    0.0000
Ecliptic YDOT         0.00318106 +/-    0.0000
Ecliptic ZDOT         0.00049325 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   17.22504508 +/-    0.0001
Geocenter to KBO     16.23403578 +/-    0.0002
# Hcoef:  8.73

The following table shows the complete astrometric record for 02QX47. 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 (02QX47) followed by the observatory code and reference code for the source of the astrometry.

2002 08  26.17227  21 32 09.54   -08 40 32.3   21.8  02QX47    644  Cg7952      
2002 08  26.23888  21 32 08.87   -08 40 36.9   22.2  02QX47    644  Cg7952      
2002 08  26.30917  21 32 08.21   -08 40 39.8   21.7  02QX47    644  Cg7952      
2002 09  09.28184  21 29 58.47   -08 51 46.6         02QX47    675  Cg7952      
2002 09  09.30293  21 29 58.28   -08 51 47.3   21.0R 02QX47    675  Cg7952      
2002 09  10.22500  21 29 50.40   -08 52 30.6   20.7R 02QX47    675  Cg7952      
2002 11  28.13621  21 28 10.99   -09 17 07.3   21.9r 02QX47    695  Cq1746      
2002 11  28.18362  21 28 11.30   -09 17 05.9   21.5r 02QX47    695  Cq1746      
2006 08  28.24806  22 52 15.43   +00 29 20.2   21.6V 02QX47    705  cs2833      
2006 08  28.25138  22 52 15.41   +00 29 20.0   22.3  02QX47    705  cs2833      
2006 09  11.25654  22 50 07.38   +00 16 50.8   21.5V 02QX47    705  cs2833      
2006 09  11.25986  22 50 07.35   +00 16 50.7   22.2  02QX47    705  cs2833      
2006 09  18.25258  22 49 04.85   +00 10 12.5   21.6V 02QX47    705  cs2833      
2006 09  18.25590  22 49 04.82   +00 10 12.3   22.3  02QX47    705  cs2833      
2006 09  20.22102  22 48 47.70   +00 08 19.0   21.7V 02QX47    705  cs2833      
2006 09  20.22434  22 48 47.67   +00 08 18.9   22.5  02QX47    705  cs2833      
2006 09  27.25058  22 47 48.64   +00 01 34.2   21.6V 02QX47    705  cs2833      
2006 09  27.25390  22 47 48.61   +00 01 34.0   22.3  02QX47    705  cs2833      
2006 09  29.28032  22 47 32.35   -00 00 21.8   21.8V 02QX47    705  cs3973      
2006 09  29.28364  22 47 32.32   -00 00 22.0   22.6  02QX47    705  cs3973      
2006 10  01.20392  22 47 17.31   -00 02 10.9   21.7V 02QX47    705  cs2833      
2006 10  01.20724  22 47 17.29   -00 02 11.1   22.4  02QX47    705  cs2833      
2006 10  03.26823  22 47 01.59   -00 04 07.1   21.7V 02QX47    705  cs2834      
2006 10  03.27155  22 47 01.55   -00 04 07.3   22.4  02QX47    705  cs2834      
2006 10  11.21779  22 46 05.71   -00 11 20.9   21.6V 02QX47    705  cs2834      
2006 10  11.22111  22 46 05.69   -00 11 21.0   22.2  02QX47    705  cs2834      
2006 10  14.25251  22 45 46.53   -00 13 59.1   21.7V 02QX47    705  cs3973      
2006 10  14.25583  22 45 46.51   -00 13 59.3   22.5  02QX47    705  cs3973      
2006 10  19.12822  22 45 18.55   -00 18 02.2   21.2R 02QX47    695  Ct0379      
2006 10  19.22294  22 45 18.03   -00 18 06.8         02QX47    695  Ct0379      
2006 10  20.13064  22 45 13.25   -00 18 50.5         02QX47    695  Ct0379      
2006 10  20.19321  22 45 12.92   -00 18 53.8   22.0V 02QX47    705  cs3973      
2006 10  20.19653  22 45 12.89   -00 18 54.0   22.7  02QX47    705  cs3973      
2006 10  22.19628  22 45 02.83   -00 20 27.9   21.8V 02QX47    705  cs3973      
2006 10  22.19960  22 45 02.81   -00 20 28.1   22.5  02QX47    705  cs3973      
2006 10  27.27180  22 44 40.26   -00 24 12.8   21.6V 02QX47    705  cs6489      
2006 10  27.27512  22 44 40.23   -00 24 13.2   22.3  02QX47    705  cs6489      
2006 10  29.17718  22 44 32.96   -00 25 32.1   21.6V 02QX47    705  cs6489      
2006 10  29.18050  22 44 32.95   -00 25 32.2   22.3  02QX47    705  cs6489      
2006 10  31.18562  22 44 25.97   -00 26 51.8   22.1V 02QX47    705  cs6489      
2006 10  31.18645  22 44 25.97   -00 26 51.8   23.2  02QX47    705  cs6489      
2006 11  13.18405  22 43 58.91   -00 33 56.3   21.9V 02QX47    705  ct1982      
2006 11  13.18737  22 43 58.87   -00 33 56.2   22.7  02QX47    705  ct1982      
2006 11  16.18100  22 43 57.32   -00 35 09.2   22.0V 02QX47    705  ct1982      
2006 11  16.18349  22 43 57.30   -00 35 09.2   22.7  02QX47    705  ct1982      
2006 11  19.17865  22 43 57.51   -00 36 12.0   22.0V 02QX47    705  ct1982      
2006 11  19.18197  22 43 57.51   -00 36 11.9   22.8  02QX47    705  ct1982      
2006 11  21.20132  22 43 58.66   -00 36 48.2   22.2V 02QX47    705  ct1982      
2006 11  21.20381  22 43 58.67   -00 36 48.4   23.2  02QX47    705  ct1982      
2006 11  24.16926  22 44 01.87   -00 37 32.8   21.9V 02QX47    705  ct1982      
2006 11  24.17258  22 44 01.87   -00 37 33.0   22.8  02QX47    705  ct1982      
2006 12  21.08139  22 45 50.53   -00 36 00.1   21.3R 02QX47    695  Ct5466      
2006 12  21.15051  22 45 50.97   -00 35 58.7         02QX47    695  Ct5466      
2009 09  17.34385  23 39 49.37   +06 03 04.3   21.1R 02QX47    688  C~09aZ      
2009 09  17.42606  23 39 48.63   +06 02 59.4         02QX47    688  C~09aZ      
2010 09  15.36520  23 55 32.70   +07 48 28.7   22.2V 02QX47    G96  C~0Mri      
2010 09  15.37323  23 55 32.59   +07 48 28.2   21.4V 02QX47    G96  C~0Mri      
2010 09  15.38124  23 55 32.52   +07 48 28.0   21.4V 02QX47    G96  C~0Mri      
2010 09  15.38929  23 55 32.44   +07 48 27.3   21.6V 02QX47    G96  C~0Mri      
2012 11  04.240550 00 17 57.381  +10 09 30.21  22.1w 02QX47    F51  c~0kgG      
2012 11  04.254661 00 17 57.285  +10 09 29.49  22.1w 02QX47    F51  c~0kgG      
2012 11  04.268773 00 17 57.216  +10 09 28.86  22.3w 02QX47    F51  c~0kgG      
2012 11  04.282900 00 17 57.115  +10 09 28.07  22.1w 02QX47    F51  c~0kgG      
2013 10  01.28223  00 35 52.39   +12 05 08.7   20.7V 02QX47    G96  C~0uu4      
2013 10  01.29167  00 35 52.30   +12 05 08.1   21.2V 02QX47    G96  C~0uu4      
2013 10  01.30127  00 35 52.23   +12 05 07.5   20.9V 02QX47    G96  C~0uu4      
2013 10  01.31093  00 35 52.12   +12 05 06.8   21.6V 02QX47    G96  C~0uu4      

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    -0.35       0.00    -2.13
  2   0.0002      0.00    -0.95       0.00     0.12
  3   0.0004      0.00    -0.31       0.00     0.58
  4   0.0386      0.00     0.36       0.00     0.08
  5   0.0387      0.00     0.30       0.00     0.37
  6   0.0412      0.00     0.54       0.00     0.14
  7   0.2573      0.00     0.32       0.00     0.06
  8   0.2574      0.00    -0.06       0.00     0.45
  9   4.0057      0.00     0.22       0.00    -0.06
 10   4.0057      0.00     0.38       0.00    -0.10
 11   4.0440      0.00     0.25       0.00    -0.12
 12   4.0440      0.00     0.26       0.00    -0.03
 13   4.0632      0.00     0.16       0.00    -0.02
 14   4.0632      0.00     0.16       0.00    -0.03
 15   4.0686      0.00     0.23       0.00    -0.15
 16   4.0686      0.00     0.22       0.00    -0.06
 17   4.0878      0.00     0.26       0.00    -0.09
 18   4.0878      0.00     0.23       0.00    -0.10
 19   4.0934      0.00     0.11       0.00    -0.10
 20   4.0934      0.00     0.06       0.00    -0.11
 21   4.0986      0.00     0.09       0.00    -0.03
 22   4.0987      0.00     0.18       0.00    -0.04
 23   4.1043      0.00     0.26       0.00    -0.09
 24   4.1043      0.00     0.04       0.00    -0.11
 25   4.1261      0.00     0.18       0.00    -0.20
 26   4.1261      0.00     0.21       0.00    -0.12
 27   4.1344      0.00     0.11       0.00    -0.12
 28   4.1344      0.00     0.12       0.00    -0.15
 29   4.1477      0.00    -0.03       0.00     0.26
 30   4.1480      0.00     0.03       0.00     0.24
 31   4.1505      0.00     0.01       0.00     0.16
 32   4.1506      0.00     0.14       0.00    -0.15
 33   4.1506      0.00    -0.04       0.00    -0.19
 34   4.1561      0.00     0.15       0.00    -0.10
 35   4.1561      0.00     0.10       0.00    -0.14
 36   4.1700      0.00     0.08       0.00     0.06
 37   4.1700      0.00    -0.16       0.00    -0.20
 38   4.1752      0.00     0.02       0.00    -0.17
 39   4.1752      0.00     0.06       0.00    -0.13
 40   4.1807      0.00     0.18       0.00     0.06
 41   4.1807      0.00     0.22       0.00     0.09
 42   4.2163      0.00     0.23       0.00    -0.29
 43   4.2163      0.00    -0.32       0.00    -0.10
 44   4.2245      0.00     0.26       0.00    -0.32
 45   4.2245      0.00    -0.02       0.00    -0.27
 46   4.2327      0.00     0.05       0.00    -0.36
 47   4.2327      0.00     0.04       0.00    -0.19
 48   4.2383      0.00    -0.07       0.00    -0.09
 49   4.2383      0.00     0.05       0.00    -0.25
 50   4.2464      0.00    -0.03       0.00     0.03
 51   4.2464      0.00    -0.09       0.00    -0.12
 52   4.3201      0.00    -0.04       0.00     0.09
 53   4.3203      0.00    -0.15       0.00     0.08
 54   7.0614      0.00     0.29       0.00     0.45
 55   7.0616      0.00     0.05       0.00     0.05
 56   8.0553      0.00     0.69       0.00     0.04
 57   8.0553      0.00     0.08       0.00    -0.05
 58   8.0553      0.00     0.07       0.00     0.16
 59   8.0554      0.00    -0.09       0.00    -0.13
 60  10.1932      0.00    -0.01       0.00     0.17
 61  10.1932      0.00    -0.14       0.00     0.19
 62  10.1933      0.00     0.15       0.00     0.31
 63  10.1933      0.00    -0.05       0.00     0.27
 64  11.0995      0.00     0.01       0.00     0.64
 65  11.0996      0.00    -0.16       0.00     0.52
 66  11.0996      0.00    -0.00       0.00     0.41
 67  11.0996      0.00    -0.44       0.00     0.21

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.

02QX47    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        25.490    25.490    25.490
ecceobj         0.374     0.374     0.374
incobj          7.291     7.291     7.291
qmin           15.049    15.069    15.646
qmax           35.019    35.989    35.019
amean          24.689    25.056    25.200
amin           23.630    24.344    24.976
amax           25.490    25.952    25.490
emean           0.364     0.377     0.368
emin            0.344     0.357     0.355
emax            0.377     0.393     0.377
imean           9.344     9.313     9.238
imin            8.797     8.355     8.796
imax           10.173    10.114     9.887
excite_mean     0.399     0.410     0.401
fracstop        0.007     0.011     0.004
cjmean          2.886     2.872     2.875

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        51.9      69.7      28.3
kozaiamp         52.3      65.0      23.9