Orbit Fit and Astrometric record for 472271

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: 472271    
# Created Wed Dec 13 02:36:52 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   80 observations of   80
# Arc:  14.03y
# First observation: 2003/10/16
#  Last observation: 2017/10/27
# Chi-squared of fit:   215.80 DOF:  154 RMS:  0.29
# Min/Max residuals:    -1.09    1.11
# Exact a, adot, b, bdot, g, gdot:
  1.253125E-05  1.924349E-02 -5.389065E-06 -4.980386E-03  2.232991E-02 -2.845237E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
    9.830548   23.854921    0.030276    0.170447   -0.983496  2452928.696553
# Heliocentric elements and errors
Epoch:              2452928.5000  =  2003/10/16
Mean Anomaly:          254.04557 +/-     0.000
Argument of Peri:      268.17836 +/-     0.000
Long of Asc Node:      236.63421 +/-     0.000
Inclination:            17.36459 +/-     0.000
Eccentricity:         0.15773859 +/-    0.0000
Semi-Major Axis:     42.98611432 +/-    0.0000
Time of Perihelion: 2483226.0371 +/-       0.0
Perihelion:          36.20554531 +/-    0.0000
Aphelion:            49.76668332 +/-    0.0000
Period (y)              281.8386 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           41.27775966 +/-    0.0000
Ecliptic Y           18.22513109 +/-    0.0000
Ecliptic Z            7.64579809 +/-    0.0000
Ecliptic XDOT        -0.00117801 +/-    0.0000
Ecliptic YDOT         0.00205501 +/-    0.0000
Ecliptic ZDOT        -0.00066107 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.76543941 +/-    0.0000
Geocenter to KBO     44.78309868 +/-    0.0000
# Hcoef:  4.78

The following table shows the complete astrometric record for 472271. 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 (472271) followed by the observatory code and reference code for the source of the astrometry.

2003 10  16.19581  01 13 07.36   +18 22 12.4   21.5R 472271    644  C~1vXl      
2003 10  16.27071  01 13 07.05   +18 22 10.7   21.8R 472271    644  C~1vXl      
2003 10  16.33396  01 13 06.73   +18 22 08.6   21.3R 472271    644  C~1vXl      
2009 01  17.198223 01 33 16.66   +18 25 38.1   21.6V 472271    645  C~1Vya      
2009 01  17.199052 01 33 16.66   +18 25 38.1   21.3V 472271    645  C~1Vya      
2009 01  17.201540 01 33 16.66   +18 25 38.1   22.6V 472271    645  C~1Vya      
2009 01  21.192575 01 33 21.14   +18 25 02.2   21.4V 472271    645  C~1Vya      
2009 01  21.193404 01 33 21.14   +18 25 02.2   20.9V 472271    645  C~1Vya      
2009 01  21.195892 01 33 21.14   +18 25 02.2   22.4V 472271    645  C~1Vya      
2010 10  07.38969  01 47 53.21   +19 22 17.5   21.7w 472271    F51  C~0SWU      
2010 10  07.40582  01 47 53.149  +19 22 17.20  21.4w 472271    F51  C~1vXl      
2010 10  07.42224  01 47 53.079  +19 22 16.81  21.4w 472271    F51  C~1vXl      
2010 10  07.43931  01 47 52.999  +19 22 16.47  21.3w 472271    F51  C~1vXl      
2010 10  12.47559  01 47 30.770  +19 20 13.53  21.2w 472271    F51  C~1vXl      
2010 10  12.49158  01 47 30.690  +19 20 13.08  21.2w 472271    F51  C~1vXl      
2010 10  12.50639  01 47 30.61   +19 20 12.4   21.7w 472271    F51  C~0SWU      
2010 10  12.50714  01 47 30.612  +19 20 12.44  21.3w 472271    F51  C~1vXl      
2010 10  12.52244  01 47 30.555  +19 20 12.09  21.2w 472271    F51  C~1vXl      
2010 11  03.43777  01 45 51.820  +19 10 04.81  21.5w 472271    F51  C~1vXl      
2010 11  03.45060  01 45 51.760  +19 10 04.48  21.2w 472271    F51  C~1vXl      
2010 11  03.46343  01 45 51.708  +19 10 04.01  21.3w 472271    F51  C~1vXl      
2010 11  03.47603  01 45 51.653  +19 10 03.68  21.4w 472271    F51  C~1vXl      
2011 01  25.23772  01 43 06.143  +18 38 57.02  21.5w 472271    F51  C~1vXl      
2011 01  25.24250  01 43 06.146  +18 38 57.00  21.6w 472271    F51  C~1vXl      
2011 01  25.24755  01 43 06.147  +18 38 56.96  21.6w 472271    F51  C~1vXl      
2012 10  11.35263  01 57 40.797  +19 32 46.18  21.7w 472271    F51  C~1vXl      
2012 10  11.36763  01 57 40.682  +19 32 45.69  21.6w 472271    F51  C~1vXl      
2012 10  11.38263  01 57 40.657  +19 32 45.39  21.9w 472271    F51  C~1vXl      
2012 10  11.39772  01 57 40.545  +19 32 44.85  21.8w 472271    F51  C~1vXl      
2012 11  07.27997  01 55 38.567  +19 20 33.60  21.3w 472271    F51  C~1vXl      
2012 11  07.29403  01 55 38.473  +19 20 32.69  21.9w 472271    F51  C~1vXl      
2012 11  07.30808  01 55 38.465  +19 20 33.16  21.7w 472271    F51  C~1vXl      
2012 11  07.32223  01 55 38.359  +19 20 32.22  21.4w 472271    F51  C~1vXl      
2013 02  11.23208  01 53 30.098  +18 50 48.80  21.4w 472271    F51  C~1vXl      
2013 02  11.23734  01 53 30.120  +18 50 48.81  21.4w 472271    F51  C~1vXl      
2013 02  11.24260  01 53 30.133  +18 50 48.79  21.5w 472271    F51  C~1vXl      
2013 02  11.24786  01 53 30.162  +18 50 48.65  21.6w 472271    F51  C~1vXl      
2013 10  05.38083  02 03 14.606  +19 40 31.64  21.3w 472271    F51  C~1vXl      
2013 10  05.39441  02 03 14.541  +19 40 31.34  21.3w 472271    F51  C~1vXl      
2013 10  05.40809  02 03 14.483  +19 40 31.10  21.4w 472271    F51  C~1vXl      
2013 10  05.42179  02 03 14.430  +19 40 30.76  21.4w 472271    F51  C~1vXl      
2014 09  09.47869  02 09 57.162  +19 52 22.42  20.7i 472271    F51  C~1vXl      
2014 09  09.49082  02 09 57.108  +19 52 22.47  20.6i 472271    F51  C~1vXl      
2014 09  09.50302  02 09 57.061  +19 52 22.45  21.1i 472271    F51  C~1vXl      
2014 10  22.34618  02 07 08.49   +19 38 43.0   20.7V 472271    G96  C~1B36      
2014 10  22.36434  02 07 08.41   +19 38 42.8   20.9V 472271    G96  C~1B36      
2014 10  22.38102  02 07 08.37   +19 38 42.6   20.6V 472271    G96  C~1B36      
2014 10  22.39659  02 07 08.28   +19 38 41.7   20.7V 472271    G96  C~1B36      
2014 10  23.061528 02 07 05.202  +19 38 24.64  20.6R 472271    J04  C~1B36      
2014 10  23.065925 02 07 05.197  +19 38 24.59  20.5R 472271    J04  C~1B36      
2014 10  23.070323 02 07 05.171  +19 38 24.32  20.3R 472271    J04  C~1B36      
2014 10  23.091036 02 07 05.048  +19 38 23.60  20.2R 472271    J04  C~1B36      
2014 10  24.329868 02 06 59.32   +19 37 51.0   20.8R 472271    H01  C~1B36      
2014 10  24.349441 02 06 59.23   +19 37 50.5   20.5R 472271    H01  C~1B36      
2014 10  24.363228 02 06 59.17   +19 37 50.2   20.8R 472271    H01  C~1B36      
2014 10  24.377316 02 06 59.10   +19 37 49.8   20.6R 472271    H01  C~1B36      
2014 10  28.52828  02 06 39.831  +19 35 58.45  21.2w 472271    F51  C~1vXl      
2014 10  28.54032  02 06 39.776  +19 35 58.12  21.5w 472271    F51  C~1vXl      
2014 10  28.55237  02 06 39.711  +19 35 57.81  21.3w 472271    F51  C~1vXl      
2014 10  28.56443  02 06 39.671  +19 35 57.46  21.2w 472271    F51  C~1vXl      
2014 11  19.25248  02 05 02.404  +19 25 42.33  20.9w 472271    F51  C~1vXl      
2014 11  19.26436  02 05 02.352  +19 25 42.05  20.9w 472271    F51  C~1vXl      
2014 11  19.27712  02 05 02.304  +19 25 41.62  20.8w 472271    F51  C~1vXl      
2014 11  19.29042  02 05 02.240  +19 25 41.24  20.8w 472271    F51  C~1vXl      
2014 12  11.20819  02 03 42.526  +19 15 38.11  21.3w 472271    F51  C~1vXl      
2014 12  11.22039  02 03 42.484  +19 15 37.73  21.4w 472271    F51  C~1vXl      
2014 12  11.23260  02 03 42.444  +19 15 37.31  21.4w 472271    F51  C~1vXl      
2014 12  11.24479  02 03 42.412  +19 15 37.09  21.4w 472271    F51  C~1vXl      
2014 12  19.27920  02 03 20.90   +19 12 20.0   20.2R 472271    291  C~1Fn4      
2014 12  20.11337  02 03 18.96   +19 12 00.8   20.6R 472271    291  C~1Fn4      
2014 12  23.06623  02 03 12.50   +19 10 53.5   20.0R 472271    291  C~1Fn4      
2014 12  23.18093  02 03 12.28   +19 10 51.4   20.2R 472271    291  C~1Fn4      
2014 12  23.33420  02 03 12.04   +19 10 48.9   19.7R 472271    291  C~1Fn4      
2015 08  24.33602  02 15 40.59   +19 58 12.6   21.0R 472271    H36  C~1WW8      
2015 08  24.39524  02 15 40.41   +19 58 12.5   21.4R 472271    H36  C~1WW8      
2015 08  26.35619  02 15 37.55   +19 58 06.3   20.6R 472271    H36  C~1WW8      
2015 08  26.41585  02 15 37.40   +19 58 06.6   21.2R 472271    H36  C~1WW8      
2017 10  27.53554  02 22 20.798  +19 47 54.25  21.7w 472271    F51  C~2OiI      
2017 10  27.54783  02 22 20.806  +19 47 54.37  21.5w 472271    F51  C~2OiI      
2017 10  27.56005  02 22 20.706  +19 47 53.70  21.7w 472271    F51  C~2OiI      

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    -0.20       0.00    -1.09
  2   0.0002      0.00     0.46       0.00     0.91
  3   0.0004      0.00    -0.12       0.00     0.63
  4   5.2567      0.00    -0.06       0.00    -0.48
  5   5.2567      0.00    -0.07       0.00    -0.47
  6   5.2567      0.00    -0.11       0.00    -0.44
  7   5.2676      0.00    -0.07       0.00    -0.57
  8   5.2676      0.00    -0.08       0.00    -0.57
  9   5.2676      0.00    -0.13       0.00    -0.55
 10   6.9766      0.00    -0.12       0.00    -0.02
 11   6.9766      0.00     0.04       0.00     0.06
 12   6.9767      0.00     0.08       0.00     0.05
 13   6.9767      0.00     0.02       0.00     0.11
 14   6.9905      0.00     0.08       0.00     0.11
 15   6.9905      0.00    -0.03       0.00     0.06
 16   6.9906      0.00    -0.22       0.00    -0.24
 17   6.9906      0.00    -0.14       0.00    -0.19
 18   6.9906      0.00     0.04       0.00    -0.15
 19   7.0506      0.00    -0.06       0.00    -0.03
 20   7.0507      0.00    -0.09       0.00     0.02
 21   7.0507      0.00    -0.01       0.00    -0.07
 22   7.0507      0.00     0.01       0.00    -0.03
 23   7.2773      0.00    -0.00       0.00     0.02
 24   7.2773      0.00    -0.05       0.00     0.03
 25   7.2773      0.00    -0.14       0.00     0.03
 26   8.9888      0.00     0.41       0.00     0.07
 27   8.9888      0.00    -0.30       0.00    -0.06
 28   8.9889      0.00     0.34       0.00    -0.00
 29   8.9889      0.00    -0.31       0.00    -0.18
 30   9.0625      0.00     0.15       0.00    -0.08
 31   9.0626      0.00    -0.31       0.00    -0.59
 32   9.0626      0.00     0.52       0.00     0.29
 33   9.0626      0.00    -0.12       0.00    -0.24
 34   9.3252      0.00    -0.10       0.00     0.23
 35   9.3252      0.00     0.02       0.00     0.23
 36   9.3252      0.00     0.00       0.00     0.20
 37   9.3253      0.00     0.22       0.00     0.05
 38   9.9718      0.00     0.00       0.00     0.00
 39   9.9718      0.00    -0.09       0.00    -0.01
 40   9.9718      0.00    -0.07       0.00     0.05
 41   9.9719      0.00     0.03       0.00     0.00
 42  10.9002      0.00     0.33       0.00    -0.12
 43  10.9002      0.00     0.05       0.00     0.05
 44  10.9002      0.00    -0.13       0.00     0.16
 45  11.0175      0.00    -0.22       0.00    -0.19
 46  11.0176      0.00    -0.14       0.00     0.08
 47  11.0176      0.00     0.43       0.00     0.32
 48  11.0177      0.00     0.18       0.00    -0.17
 49  11.0195      0.00     0.08       0.00     0.12
 50  11.0195      0.00     0.31       0.00     0.18
 51  11.0195      0.00     0.23       0.00     0.03
 52  11.0196      0.00    -0.15       0.00    -0.15
 53  11.0230      0.00     0.02       0.00    -0.10
 54  11.0230      0.00     0.05       0.00    -0.08
 55  11.0230      0.00     0.13       0.00    -0.01
 56  11.0231      0.00     0.07       0.00    -0.04
 57  11.0344      0.00     0.22       0.00     0.15
 58  11.0345      0.00     0.24       0.00     0.15
 59  11.0345      0.00     0.12       0.00     0.17
 60  11.0345      0.00     0.37       0.00     0.15
 61  11.0939      0.00     0.13       0.00    -0.02
 62  11.0940      0.00     0.11       0.00     0.04
 63  11.0940      0.00     0.20       0.00    -0.03
 64  11.0940      0.00     0.09       0.00    -0.03
 65  11.1540      0.00     0.26       0.00     0.20
 66  11.1541      0.00     0.19       0.00     0.13
 67  11.1541      0.00     0.15       0.00     0.02
 68  11.1541      0.00     0.23       0.00     0.11
 69  11.1761      0.00    -0.04       0.00     0.03
 70  11.1784      0.00    -0.11       0.00     0.20
 71  11.1865      0.00    -0.47       0.00    -0.31
 72  11.1868      0.00    -0.11       0.00     0.13
 73  11.1872      0.00     1.11       0.00     1.04
 74  11.8553      0.00     0.28       0.00     0.05
 75  11.8554      0.00    -1.09       0.00     0.09
 76  11.8608      0.00     0.78       0.00    -0.23
 77  11.8610      0.00     0.03       0.00     0.27
 78  14.0324      0.00    -0.73       0.00    -0.12
 79  14.0324      0.00     0.27       0.00     0.32
 80  14.0325      0.00    -0.36       0.00    -0.03

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.

472271    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.353    43.352    43.353
ecceobj         0.152     0.152     0.152
incobj         17.321    17.321    17.321
qmin           35.767    35.747    35.752
qmax           50.745    50.834    50.805
amean          43.115    43.119    43.147
amin           42.712    42.717    42.720
amax           43.556    43.572    43.574
emean           0.148     0.148     0.147
emin            0.129     0.129     0.126
emax            0.168     0.168     0.169
imean          18.934    18.948    18.977
imin           18.240    18.252    18.315
imax           19.634    19.630    19.631
excite_mean     0.357     0.357     0.357
fracstop        1.000     1.000     1.000
cjmean          2.936     2.936     2.936

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       177.8     177.5     177.3
kozaiamp        180.0     180.0     180.0