Orbit Fit and Astrometric record for 471513

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: 471513    
# Created Wed Dec 13 02:36:52 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   75 observations of   75
# Arc:   6.00y
# First observation: 2011/01/30
#  Last observation: 2017/01/28
# Chi-squared of fit:   387.84 DOF:  144 RMS:  0.40
# Min/Max residuals:    -1.42    1.76
# Exact a, adot, b, bdot, g, gdot:
  2.327875E-05  8.199400E-02  2.062849E-06  7.122859E-03  5.470436E-02 -3.545090E-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
   -3.412361  141.895904    0.202101   -0.057570   -0.965579  2455591.849966
# Heliocentric elements and errors
Epoch:              2455592.5000  =  2011/01/31
Mean Anomaly:          336.23924 +/-     0.000
Argument of Peri:      356.61099 +/-     0.000
Long of Asc Node:      174.43117 +/-     0.000
Inclination:             5.91379 +/-     0.000
Eccentricity:         0.11547539 +/-    0.0000
Semi-Major Axis:     21.45580554 +/-    0.0000
Time of Perihelion: 2457988.4265 +/-       0.0
Perihelion:          18.97818808 +/-    0.0000
Aphelion:            23.93342300 +/-    0.0000
Period (y)               99.3861 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -14.99148248 +/-    0.0000
Ecliptic Y           12.01556984 +/-    0.0000
Ecliptic Z           -1.08804455 +/-    0.0000
Ecliptic XDOT        -0.00241074 +/-    0.0000
Ecliptic YDOT        -0.00331923 +/-    0.0000
Ecliptic ZDOT         0.00036643 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   19.24326309 +/-    0.0000
Geocenter to KBO     18.28012480 +/-    0.0000
# Hcoef:  8.92

The following table shows the complete astrometric record for 471513. 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 (471513) followed by the observatory code and reference code for the source of the astrometry.

2011 01  30.34920  09 32 34.343  +10 58 38.23  21.8w 471513    F51  C~1vWb      
2011 01  30.36377  09 32 34.198  +10 58 38.55  22.0w 471513    F51  C~1vWb      
2011 01  30.37939  09 32 34.060  +10 58 39.67  21.7w 471513    F51  C~1vWb      
2011 01  30.39394  09 32 33.921  +10 58 40.37  21.6w 471513    F51  C~1vWb      
2012 02  03.54090  09 50 37.770  +09 53 00.02  21.1i 471513    F51  C@0612      
2012 02  03.55378  09 50 37.646  +09 53 00.60  21.2i 471513    F51  C@0612      
2012 02  03.56792  09 50 37.526  +09 53 01.35  21.6r 471513    F51  C@0612      
2012 02  03.58682  09 50 37.340  +09 53 02.26  21.5r 471513    F51  C@0612      
2012 02  04.477407 09 50 29.097  +09 53 47.95  21.0R 471513    568  C~0dTD      
2012 02  04.481417 09 50 29.061  +09 53 48.19  21.2R 471513    568  C~0dTD      
2012 02  04.485414 09 50 29.021  +09 53 48.37  21.1R 471513    568  C~0dTD      
2012 02  14.35172  09 48 55.831  +10 02 30.52  21.7w 471513    F51  C~1vWb      
2012 02  14.36595  09 48 55.690  +10 02 31.22  21.6w 471513    F51  C~1vWb      
2012 02  14.38012  09 48 55.548  +10 02 31.98  21.5w 471513    F51  C~1vWb      
2012 02  14.39433  09 48 55.409  +10 02 32.81  21.5w 471513    F51  C~1vWb      
2012 06  08.28224  09 43 52.275  +10 50 07.23  22.1w 471513    F51  C~1vWb      
2012 06  08.28918  09 43 52.324  +10 50 06.88  22.0w 471513    F51  C~1vWb      
2012 06  08.29627  09 43 52.359  +10 50 06.46  22.3w 471513    F51  C~1vWb      
2013 02  08.49044  10 08 26.787  +08 44 43.74  21.6w 471513    F51  C~1vWb      
2013 02  08.50633  10 08 26.637  +08 44 44.61  21.6w 471513    F51  C~1vWb      
2013 02  08.52220  10 08 26.484  +08 44 45.47  21.7w 471513    F51  C~1vWb      
2013 02  08.54010  10 08 26.322  +08 44 46.38  21.7w 471513    F51  C~1vWb      
2013 03  03.47906  10 04 51.996  +09 06 23.53  21.4r 471513    F51  C~1vWb      
2013 03  03.49107  10 04 51.872  +09 06 24.45  21.3i 471513    F51  C~1vWb      
2013 03  03.50348  10 04 51.733  +09 06 25.19  21.1i 471513    F51  C~1vWb      
2014 02  05.14228  10 27 39.950  +07 24 19.22  20.7R 471513    809  C~10hG      
2014 02  05.26639  10 27 38.892  +07 24 25.81  20.9R 471513    809  C~10hG      
2014 02  05.36753  10 27 37.939  +07 24 31.60  21.0R 471513    809  C~10hG      
2014 02  06.16330  10 27 31.091  +07 25 13.58  20.6R 471513    809  C~10hG      
2014 02  06.29281  10 27 29.898  +07 25 20.89  20.6R 471513    809  C~10hG      
2014 02  10.44271  10 26 53.074  +07 29 06.49  21.0i 471513    F51  C~1vWb      
2014 02  10.45506  10 26 52.957  +07 29 07.14  21.3i 471513    F51  C~1vWb      
2014 02  10.46749  10 26 52.851  +07 29 07.93  21.2i 471513    F51  C~1vWb      
2014 02  10.47995  10 26 52.736  +07 29 08.50  21.3i 471513    F51  C~1vWb      
2014 02  22.07807  10 25 05.922  +07 40 15.45  21.1R 471513    809  C~113y      
2014 02  22.08065  10 25 05.907  +07 40 15.96  21.0R 471513    809  C~113y      
2014 02  22.16245  10 25 05.120  +07 40 20.28  21.0R 471513    809  C~113y      
2014 02  22.24950  10 25 04.281  +07 40 25.89  21.1R 471513    809  C~113y      
2014 02  26.34790  10 24 25.910  +07 44 28.24  21.4w 471513    F51  C~1vWb      
2014 02  26.35982  10 24 25.809  +07 44 29.08  21.5w 471513    F51  C~1vWb      
2014 02  26.37174  10 24 25.685  +07 44 29.75  21.6w 471513    F51  C~1vWb      
2014 02  26.38366  10 24 25.559  +07 44 30.47  21.7w 471513    F51  C~1vWb      
2014 03  06.29765  10 23 12.342  +07 52 20.06  20.9i 471513    F51  C~1vWb      
2014 03  06.30954  10 23 12.237  +07 52 21.11  21.2i 471513    F51  C~1vWb      
2014 03  06.33334  10 23 11.997  +07 52 22.49  21.0i 471513    F51  C~1vWb      
2014 04  04.24440  10 19 22.889  +08 18 12.14  21.9w 471513    F51  C~1vWb      
2014 04  04.25630  10 19 22.804  +08 18 12.48  21.7w 471513    F51  C~1vWb      
2014 04  04.26823  10 19 22.714  +08 18 13.32  21.6w 471513    F51  C~1vWb      
2014 04  04.28016  10 19 22.640  +08 18 13.73  21.9w 471513    F51  C~1vWb      
2014 05  21.28300  10 17 41.048  +08 36 15.94  22.0w 471513    F51  C~1vWb      
2014 05  21.29509  10 17 41.066  +08 36 15.80  22.0w 471513    F51  C~1vWb      
2014 05  21.30716  10 17 41.089  +08 36 15.89  21.9w 471513    F51  C~1vWb      
2014 05  21.31919  10 17 41.127  +08 36 15.80  21.9w 471513    F51  C~1vWb      
2015 01  16.48394  10 48 36.679  +05 49 08.12  21.8w 471513    F51  C~1vWb      
2015 01  16.49540  10 48 36.606  +05 49 08.74  22.0w 471513    F51  C~1vWb      
2015 01  16.50679  10 48 36.535  +05 49 09.03  21.8w 471513    F51  C~1vWb      
2015 01  16.51822  10 48 36.462  +05 49 09.48  21.9w 471513    F51  C~1vWb      
2015 01  22.45628  10 48 00.42   +05 52 55.4   21.6R 471513    G37  C~1M7N      
2015 01  22.46523  10 48 00.36   +05 52 55.8         471513    G37  C~1M7N      
2015 01  22.47402  10 48 00.30   +05 52 56.0         471513    G37  C~1M7N      
2015 01  24.31033  10 47 48.22   +05 54 13.1   21.0R 471513    H36  C~1I1k      
2015 01  24.41108  10 47 47.39   +05 54 15.6   21.2R 471513    H36  C~1I1k      
2015 02  19.29043  10 44 16.60   +06 16 46.9   21.1R 471513    H36  C~1LLQ      
2015 02  19.31219  10 44 16.44   +06 16 47.7   21.1R 471513    H36  C~1LLQ      
2015 03  15.37761  10 40 35.984  +06 41 06.69  21.7w 471513    F51  C~1vWb      
2015 03  15.38994  10 40 35.871  +06 41 07.72  21.8w 471513    F51  C~1vWb      
2015 03  15.40227  10 40 35.758  +06 41 08.29  21.5w 471513    F51  C~1vWb      
2015 03  15.41459  10 40 35.667  +06 41 09.27  21.8w 471513    F51  C~1vWb      
2015 04  10.24827  10 37 18.760  +07 04 06.21  21.7w 471513    F51  C~1vWb      
2015 04  10.26024  10 37 18.684  +07 04 06.74  21.8w 471513    F51  C~1vWb      
2015 04  10.27225  10 37 18.605  +07 04 07.25  21.7w 471513    F51  C~1vWb      
2015 04  10.28441  10 37 18.533  +07 04 07.84  21.8w 471513    F51  C~1vWb      
2017 01  28.53994  11 24 08.261  +03 10 08.97  22.0w 471513    F51  C~27eV      
2017 01  28.55176  11 24 08.160  +03 10 09.59  22.1w 471513    F51  C~27eV      
2017 01  28.57539  11 24 08.017  +03 10 10.78  22.0w 471513    F51  C~27eV      

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    -0.26       0.00     1.75
  2   0.0000      0.00     0.10       0.00    -0.45
  3   0.0001      0.00     0.26       0.00    -0.09
  4   0.0001      0.00     0.26       0.00    -0.09
  5   1.0108      0.00    -0.12       0.00    -0.00
  6   1.0108      0.00    -0.16       0.00    -0.07
  7   1.0109      0.00     0.04       0.00    -0.04
  8   1.0109      0.00    -0.09       0.00    -0.09
  9   1.0134      0.00    -0.05       0.00     0.04
 10   1.0134      0.00    -0.02       0.00     0.07
 11   1.0134      0.00    -0.05       0.00     0.05
 12   1.0404      0.00     0.19       0.00    -0.05
 13   1.0404      0.00     0.14       0.00    -0.13
 14   1.0405      0.00     0.08       0.00    -0.14
 15   1.0405      0.00     0.06       0.00    -0.08
 16   1.3551      0.00     0.06       0.00     0.08
 17   1.3551      0.00     0.03       0.00    -0.08
 18   1.3551      0.00    -0.23       0.00    -0.31
 19   2.0264      0.00    -0.20       0.00     0.08
 20   2.0264      0.00    -0.21       0.00     0.09
 21   2.0265      0.00    -0.26       0.00     0.09
 22   2.0265      0.00    -0.16       0.00     0.03
 23   2.0893      0.00     0.28       0.00    -0.28
 24   2.0894      0.00     0.09       0.00    -0.04
 25   2.0894      0.00    -0.27       0.00     0.00
 26   3.0165      0.00     1.22       0.00    -0.09
 27   3.0169      0.00     1.76       0.00    -0.08
 28   3.0172      0.00     0.84       0.00     0.37
 29   3.0193      0.00     1.33       0.00     0.03
 30   3.0197      0.00     0.72       0.00     0.41
 31   3.0311      0.00    -0.09       0.00     0.21
 32   3.0311      0.00    -0.15       0.00     0.18
 33   3.0311      0.00    -0.03       0.00     0.28
 34   3.0312      0.00    -0.04       0.00     0.16
 35   3.0629      0.00     0.87       0.00    -0.21
 36   3.0629      0.00     1.01       0.00     0.14
 37   3.0631      0.00     0.87       0.00    -0.38
 38   3.0634      0.00     0.73       0.00     0.10
 39   3.0746      0.00    -0.03       0.00    -0.00
 40   3.0746      0.00     0.15       0.00     0.12
 41   3.0747      0.00    -0.01       0.00     0.08
 42   3.0747      0.00    -0.19       0.00     0.09
 43   3.0964      0.00    -0.07       0.00    -0.06
 44   3.0964      0.00     0.01       0.00     0.29
 45   3.0965      0.00    -0.28       0.00     0.26
 46   3.1756      0.00     0.14       0.00    -0.15
 47   3.1757      0.00     0.01       0.00    -0.36
 48   3.1757      0.00    -0.19       0.00    -0.06
 49   3.1757      0.00    -0.15       0.00    -0.19
 50   3.3044      0.00    -0.01       0.00     0.05
 51   3.3044      0.00    -0.13       0.00    -0.06
 52   3.3045      0.00    -0.17       0.00     0.06
 53   3.3045      0.00     0.01       0.00    -0.01
 54   3.9620      0.00    -0.10       0.00    -0.08
 55   3.9621      0.00    -0.20       0.00     0.14
 56   3.9621      0.00    -0.28       0.00     0.03
 57   3.9621      0.00    -0.38       0.00     0.08
 58   3.9784      0.00    -0.39       0.00     0.18
 59   3.9784      0.00    -0.39       0.00     0.21
 60   3.9784      0.00    -0.41       0.00     0.05
 61   3.9835      0.00     0.98       0.00     0.38
 62   3.9837      0.00    -1.00       0.00    -1.42
 63   4.0546      0.00    -0.79       0.00    -0.61
 64   4.0547      0.00    -0.17       0.00    -1.09
 65   4.1205      0.00    -0.02       0.00    -0.05
 66   4.1206      0.00    -0.05       0.00     0.25
 67   4.1206      0.00    -0.08       0.00     0.08
 68   4.1206      0.00     0.22       0.00     0.33
 69   4.1914      0.00     0.11       0.00    -0.14
 70   4.1914      0.00     0.08       0.00    -0.15
 71   4.1914      0.00     0.02       0.00    -0.18
 72   4.1915      0.00     0.08       0.00    -0.14
 73   5.9964      0.00     0.51       0.00    -0.21
 74   5.9964      0.00     0.09       0.00    -0.09
 75   5.9965      0.00     0.14       0.00     0.11

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.

471513    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        21.563    21.563    21.563
ecceobj         0.116     0.116     0.116
incobj          5.907     5.907     5.907
qmin           18.192    18.522    17.237
qmax           26.966    26.522    28.185
amean          21.513    21.314    22.148
amin           20.268    20.907    21.041
amax           23.545    23.170    23.819
emean           0.116     0.053     0.171
emin            0.019     0.001     0.116
emax            0.175     0.168     0.207
imean           5.210     6.209     5.228
imin            3.611     4.556     4.231
imax            7.670     7.727     5.802
excite_mean     0.149     0.123     0.194
fracstop        0.052     0.203     0.007
cjmean          3.072     3.082     3.042

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       192.6     176.2     171.9
kozaiamp        174.1     179.9     174.0