Orbit Fit and Astrometric record for 03QA112

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: 03QA112   
# Created Sat Apr 20 01:08:14 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   80 observations of   80
# Arc:  14.37y
# First observation: 2003/08/26
#  Last observation: 2018/01/06
# Chi-squared of fit:   124.89 DOF:  154 RMS:  0.22
# Min/Max residuals:    -0.79    0.53
# Exact a, adot, b, bdot, g, gdot:
  1.102494E-05  1.805805E-02  2.802718E-06  4.915128E-03  2.165503E-02  1.070987E-03
# Covariance matrix:
  1.8903E-13 -3.6540E-14  1.7049E-14 -7.0978E-15  3.2299E-16 -9.3409E-14
 -3.6540E-14  1.2244E-14 -7.6069E-15  3.0983E-15  7.6643E-15  4.0576E-14
  1.7049E-14 -7.6069E-15  1.3149E-13 -1.2956E-14 -7.6262E-15 -2.7679E-14
 -7.0978E-15  3.0983E-15 -1.2956E-14  1.9489E-15  2.3323E-15  1.1270E-14
  3.2299E-16  7.6643E-15 -7.6262E-15  2.3323E-15  9.5612E-14  2.8265E-14
 -9.3409E-14  4.0576E-14 -2.7679E-14  1.1270E-14  2.8265E-14  1.4759E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.211282  -17.210706    0.181641   -0.090635   -0.994389  2452877.772713
# Heliocentric elements and errors
Epoch:              2452878.5000  =  2003/08/27
Mean Anomaly:          151.49074 +/-     0.016
Argument of Peri:      183.89121 +/-     0.011
Long of Asc Node:        0.64735 +/-     0.000
Inclination:            16.05150 +/-     0.000
Eccentricity:         0.12177212 +/-    0.0000
Semi-Major Axis:     42.49894465 +/-    0.0020
Time of Perihelion: 2410294.2269 +/-       5.4
Perihelion:          37.32375799 +/-    0.0023
Aphelion:            47.67413132 +/-    0.0027
Period (y)              277.0610 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           44.82597290 +/-    0.0006
Ecliptic Y          -14.07201930 +/-    0.0002
Ecliptic Z           -4.19423498 +/-    0.0001
Ecliptic XDOT         0.00085301 +/-    0.0000
Ecliptic YDOT         0.00211852 +/-    0.0000
Ecliptic ZDOT         0.00060673 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.16967302 +/-    0.0006
Geocenter to KBO     46.17865012 +/-    0.0007
# Hcoef:  6.19

The following table shows the complete astrometric record for 03QA112. 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 (03QA112) followed by the observatory code and reference code for the source of the astrometry.

2003 08  26.27197  23 04 40.32   -11 34 07.6   21.5R 03QA112   807  Ci4592      
2003 08  26.36752  23 04 39.92   -11 34 09.7         03QA112   807  Ci4592      
2003 09  03.09799  23 04 07.67   -11 37 11.4   22.3R 03QA112   304  Ci4592      
2003 09  03.17448  23 04 07.34   -11 37 13.2         03QA112   304  Ci4592      
2003 11  20.08134  23 00 08.08   -11 52 30.8   22.7R 03QA112   695  Cj4700      
2003 11  22.08697  23 00 06.73   -11 52 18.8         03QA112   695  Cj4700      
2004 05  28.30263  23 10 46.50   -10 34 41.7   22.8R 03QA112   304  C~09at      
2004 05  28.43256  23 10 46.67   -10 34 40.6         03QA112   304  C~09at      
2009 08  20.39468  23 25 18.36   -07 33 19.2   22.6R 03QA112   688  C~09au      
2009 08  20.43944  23 25 18.21   -07 33 20.5         03QA112   688  C~09au      
2009 09  17.32882  23 23 25.59   -07 44 08.8   22.3R 03QA112   688  C~09au      
2009 09  17.38050  23 23 25.37   -07 44 10.2         03QA112   688  C~09au      
2009 09  18.31507  23 23 21.50   -07 44 31.4   22.3R 03QA112   688  C~09au      
2009 09  18.37524  23 23 21.22   -07 44 32.6         03QA112   688  C~09au      
2009 10  15.161086 23 21 38.06   -07 53 18.9         03QA112   645  C~1Q3G      
2009 10  15.161915 23 21 38.06   -07 53 18.8         03QA112   645  C~1Q3G      
2009 10  15.164403 23 21 38.05   -07 53 18.8         03QA112   645  C~1Q3G      
2010 09  15.45103  23 26 54.828  -07 03 20.59  22.8G 03QA112   F51  C~2r7C      
2010 09  15.46089  23 26 54.810  -07 03 20.99  21.9G 03QA112   F51  C~2r7C      
2010 09  15.47090  23 26 54.748  -07 03 21.21  22.6G 03QA112   F51  C~2r7C      
2010 09  15.48113  23 26 54.705  -07 03 21.15  22.3G 03QA112   F51  C~2r7C      
2010 09  16.50264  23 26 50.479  -07 03 44.92  22.7G 03QA112   F51  C~2r7C      
2011 08  23.48780  23 31 47.576  -06 14 17.60  21.2G 03QA112   F51  C~2r7C      
2011 08  27.50565  23 31 32.209  -06 15 49.26  23.3G 03QA112   F51  C~2r7C      
2011 09  04.51641  23 31 00.331  -06 18 56.22  22.4G 03QA112   F51  C~2r7C      
2011 09  21.40730  23 29 50.901  -06 25 29.29  22.9G 03QA112   F51  C~2r7C      
2012 08  14.52054  23 35 35.159  -05 31 19.39  22.9G 03QA112   F51  C~2r7C      
2013 09  01.43242  23 37 46.443  -04 57 52.46  22.9G 03QA112   F51  C~2r7C      
2013 09  01.44590  23 37 46.393  -04 57 52.74  23.0G 03QA112   F51  C~2r7C      
2013 09  01.45935  23 37 46.327  -04 57 53.07  23.0G 03QA112   F51  C~2r7C      
2013 09  01.47278  23 37 46.269  -04 57 53.40  23.2G 03QA112   F51  C~2r7C      
2014 07  28.53780  23 42 58.375  -04 06 20.73  22.8G 03QA112   F51  C~2r7C      
2014 07  28.54921  23 42 58.363  -04 06 20.75  22.4G 03QA112   F51  C~2r7C      
2014 07  28.56061  23 42 58.339  -04 06 20.92  22.8G 03QA112   F51  C~2r7C      
2014 07  28.57199  23 42 58.301  -04 06 21.12  23.0G 03QA112   F51  C~2r7C      
2014 08  03.53933  23 42 42.802  -04 07 55.63  22.5G 03QA112   F51  C~2r7C      
2014 08  04.55290  23 42 39.972  -04 08 12.71  23.2G 03QA112   F51  C~2r7C      
2014 08  05.55478  23 42 37.108  -04 08 30.31  22.5G 03QA112   F51  C~2r7C      
2014 08  20.50488  23 41 48.665  -04 13 21.88  23.0G 03QA112   F51  C~2r7C      
2014 08  22.47777  23 41 41.545  -04 14 04.21  22.7G 03QA112   F51  C~2r7C      
2014 08  23.50083  23 41 37.788  -04 14 26.53  22.7G 03QA112   F51  C~2r7C      
2014 09  12.50337  23 40 19.141  -04 22 06.27  22.7G 03QA112   F51  C~2r7C      
2014 09  17.36258  23 39 59.194  -04 24 00.55  22.8G 03QA112   F51  C~2r7C      
2014 09  19.33273  23 39 51.059  -04 24 46.70  22.8G 03QA112   F51  C~2r7C      
2014 09  19.34418  23 39 51.034  -04 24 46.88  22.6G 03QA112   F51  C~2r7C      
2014 09  19.35561  23 39 50.985  -04 24 47.07  23.0G 03QA112   F51  C~2r7C      
2014 09  19.36706  23 39 50.947  -04 24 47.32  22.7G 03QA112   F51  C~2r7C      
2014 11  18.23583  23 36 37.725  -04 40 57.69  23.3G 03QA112   F51  C~2r7C      
2015 07  23.54552  23 46 23.946  -03 25 27.95  23.6G 03QA112   F51  C~2r7C      
2015 07  30.51467  23 46 08.289  -03 27 01.91  23.2G 03QA112   F51  C~2r7C      
2015 09  09.41754  23 43 48.489  -03 40 48.41  22.4G 03QA112   F51  C~2r7C      
2015 09  09.42969  23 43 48.440  -03 40 48.79  22.5G 03QA112   F51  C~2r7C      
2015 09  09.44186  23 43 48.390  -03 40 48.91  22.5G 03QA112   F51  C~2r7C      
2015 09  09.45406  23 43 48.337  -03 40 49.28  22.3G 03QA112   F51  C~2r7C      
2015 09  12.39519  23 43 36.375  -03 41 58.52  22.7G 03QA112   F51  C~2r7C      
2015 09  12.40693  23 43 36.330  -03 41 58.81  22.7G 03QA112   F51  C~2r7C      
2015 09  12.41868  23 43 36.285  -03 41 58.94  22.7G 03QA112   F51  C~2r7C      
2015 09  12.43045  23 43 36.227  -03 41 59.14  22.6G 03QA112   F51  C~2r7C      
2015 11  02.28474  23 40 27.722  -03 58 57.49  22.8G 03QA112   F51  C~2r7C      
2017 07  30.52117  23 52 33.795  -02 07 42.81  22.8G 03QA112   F51  C~2r7C      
2017 08  01.53329  23 52 28.884  -02 08 11.22  22.9G 03QA112   F51  C~2r7C      
2017 08  01.54515  23 52 28.838  -02 08 11.29  23.5G 03QA112   F51  C~2r7C      
2017 08  01.55704  23 52 28.808  -02 08 11.48  22.5G 03QA112   F51  C~2r7C      
2017 08  01.56895  23 52 28.770  -02 08 11.59  23.2G 03QA112   F51  C~2r7C      
2017 08  03.53513  23 52 23.742  -02 08 41.01  22.9G 03QA112   F51  C~2r7C      
2017 08  17.47937  23 51 42.021  -02 12 43.86  22.9G 03QA112   F51  C~2r7C      
2017 08  17.49043  23 51 41.983  -02 12 43.64  23.0G 03QA112   F51  C~2r7C      
2017 08  17.50149  23 51 41.945  -02 12 44.06  23.2G 03QA112   F51  C~2r7C      
2017 09  14.41404  23 49 56.082  -02 22 59.35  22.9G 03QA112   F51  C~2r7C      
2017 09  14.42602  23 49 56.054  -02 22 59.55  22.6G 03QA112   F51  C~2r7C      
2017 09  14.43795  23 49 55.989  -02 23 00.07  22.6G 03QA112   F51  C~2r7C      
2017 09  14.44987  23 49 55.944  -02 23 00.19  22.9G 03QA112   F51  C~2r7C      
2017 09  17.39777  23 49 43.866  -02 24 09.60  22.8G 03QA112   F51  C~2r7C      
2017 09  25.38210  23 49 11.107  -02 27 16.61  22.8G 03QA112   F51  C~2r7C      
2017 09  25.39270  23 49 11.074  -02 27 16.97  23.0G 03QA112   F51  C~2r7C      
2017 09  25.40332  23 49 11.016  -02 27 17.09  22.6G 03QA112   F51  C~2r7C      
2017 09  25.41391  23 49 10.984  -02 27 17.38  22.7G 03QA112   F51  C~2r7C      
2017 09  28.46562  23 48 58.536  -02 28 27.93  23.0G 03QA112   F51  C~2r7C      
2017 11  13.31652  23 46 26.964  -02 41 48.95  23.3G 03QA112   F51  C~2r7C      
2018 01  06.23418  23 46 22.848  -02 38 10.08  23.2G 03QA112   F51  C~2r7C      

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     0.36       0.00     0.32
  2   0.0003      0.00     0.33       0.00     0.47
  3   0.0214      0.00    -0.39       0.00     0.22
  4   0.0216      0.00    -0.44       0.00     0.20
  5   0.2349      0.00     0.19       0.00     0.14
  6   0.2404      0.00     0.18       0.00     0.22
  7   0.7557      0.00    -0.60       0.00    -0.69
  8   0.7561      0.00    -0.55       0.00    -0.17
  9   5.9853      0.00    -0.15       0.00     0.37
 10   5.9854      0.00     0.17       0.00     0.08
 11   6.0618      0.00     0.53       0.00     0.50
 12   6.0619      0.00     0.48       0.00     0.27
 13   6.0645      0.00     0.32       0.00     0.18
 14   6.0646      0.00    -0.10       0.00     0.33
 15   6.1380      0.00    -0.44       0.00    -0.79
 16   6.1380      0.00    -0.40       0.00    -0.68
 17   6.1380      0.00    -0.42       0.00    -0.64
 18   7.0559      0.00     0.13       0.00    -0.13
 19   7.0560      0.00     0.49       0.00    -0.30
 20   7.0560      0.00     0.19       0.00    -0.29
 21   7.0560      0.00     0.19       0.00     0.00
 22   7.0588      0.00     0.22       0.00    -0.27
 23   7.9924      0.00    -0.05       0.00     0.02
 24   8.0034      0.00     0.30       0.00     0.06
 25   8.0253      0.00     0.01       0.00    -0.03
 26   8.0716      0.00     0.05       0.00    -0.02
 27   8.9699      0.00     0.11       0.00    -0.10
 28  10.0182      0.00     0.08       0.00    -0.00
 29  10.0183      0.00     0.14       0.00     0.03
 30  10.0183      0.00    -0.03       0.00     0.02
 31  10.0183      0.00    -0.09       0.00    -0.00
 32  10.9220      0.00    -0.20       0.00    -0.02
 33  10.9220      0.00     0.04       0.00     0.13
 34  10.9221      0.00     0.11       0.00     0.13
 35  10.9221      0.00    -0.03       0.00     0.10
 36  10.9384      0.00    -0.00       0.00     0.06
 37  10.9412      0.00     0.09       0.00     0.20
 38  10.9440      0.00    -0.01       0.00    -0.06
 39  10.9849      0.00     0.28       0.00    -0.06
 40  10.9903      0.00     0.13       0.00    -0.02
 41  10.9931      0.00    -0.05       0.00    -0.09
 42  11.0479      0.00    -0.11       0.00    -0.03
 43  11.0612      0.00     0.08       0.00    -0.12
 44  11.0666      0.00    -0.29       0.00    -0.23
 45  11.0666      0.00     0.05       0.00    -0.14
 46  11.0666      0.00     0.03       0.00    -0.06
 47  11.0667      0.00     0.18       0.00    -0.04
 48  11.2306      0.00    -0.10       0.00    -0.07
 49  11.9077      0.00    -0.13       0.00     0.06
 50  11.9267      0.00     0.19       0.00     0.02
 51  12.0387      0.00    -0.01       0.00     0.04
 52  12.0388      0.00     0.00       0.00    -0.05
 53  12.0388      0.00     0.01       0.00     0.11
 54  12.0388      0.00    -0.03       0.00     0.03
 55  12.0469      0.00     0.01       0.00    -0.06
 56  12.0469      0.00     0.07       0.00    -0.07
 57  12.0469      0.00     0.12       0.00     0.08
 58  12.0470      0.00    -0.01       0.00     0.15
 59  12.1862      0.00    -0.01       0.00    -0.04
 60  13.9281      0.00     0.09       0.00     0.03
 61  13.9336      0.00     0.21       0.00    -0.05
 62  13.9337      0.00    -0.02       0.00     0.05
 63  13.9337      0.00    -0.01       0.00     0.03
 64  13.9337      0.00    -0.12       0.00     0.09
 65  13.9391      0.00     0.04       0.00    -0.20
 66  13.9773      0.00     0.01       0.00    -0.25
 67  13.9773      0.00     0.01       0.00     0.19
 68  13.9774      0.00     0.00       0.00    -0.02
 69  14.0538      0.00    -0.13       0.00     0.05
 70  14.0538      0.00     0.19       0.00     0.14
 71  14.0538      0.00    -0.04       0.00    -0.10
 72  14.0539      0.00     0.03       0.00     0.06
 73  14.0619      0.00    -0.17       0.00     0.05
 74  14.0838      0.00    -0.20       0.00     0.17
 75  14.0838      0.00    -0.03       0.00     0.06
 76  14.0839      0.00    -0.24       0.00     0.18
 77  14.0839      0.00    -0.06       0.00     0.14
 78  14.0922      0.00    -0.31       0.00     0.01
 79  14.2178      0.00    -0.18       0.00     0.19
 80  14.3654      0.00    -0.04       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.

03QA112    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.840    42.840    42.840
ecceobj         0.113     0.113     0.113
incobj         15.968    15.968    15.968
qmin           36.559    36.589    36.592
qmax           49.287    49.222    49.215
amean          42.755    42.762    42.759
amin           42.392    42.406    42.393
amax           43.156    43.168    43.156
emean           0.125     0.125     0.125
emin            0.109     0.109     0.110
emax            0.143     0.142     0.141
imean          16.004    16.008    16.001
imin           15.216    15.230    15.219
imax           16.650    16.657    16.653
excite_mean     0.303     0.303     0.303
fracstop        1.000     1.000     1.000
cjmean          2.976     2.976     2.976

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       183.3     183.2     183.4
kozaiamp        180.0     180.0     180.0