Orbit Fit and Astrometric record for 471512

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: 471512    
# Created Sat Oct 21 01:36:52 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   96 observations of   96
# Arc:  17.54y
# First observation: 1998/09/19
#  Last observation: 2016/04/03
# Chi-squared of fit:   783.13 DOF:  186 RMS:  0.50
# Min/Max residuals:    -1.30    1.88
# Exact a, adot, b, bdot, g, gdot:
  3.626397E-05  1.405929E-01  2.124050E-06  2.699594E-03  7.078082E-02 -1.059584E-02
# 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
  -15.295383   43.419703    0.729449   -0.179173   -0.654289  2451075.925060
# Heliocentric elements and errors
Epoch:              2451076.5000  =  1998/09/20
Mean Anomaly:          353.85691 +/-     0.000
Argument of Peri:      292.88566 +/-     0.000
Long of Asc Node:      128.76111 +/-     0.000
Inclination:            14.58437 +/-     0.000
Eccentricity:         0.50365378 +/-    0.0000
Semi-Major Axis:     29.15402273 +/-    0.0000
Time of Perihelion: 2452057.6393 +/-       0.0
Perihelion:          14.47048895 +/-    0.0000
Aphelion:            43.83755652 +/-    0.0000
Period (y)              157.4186 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           10.90047133 +/-    0.0000
Ecliptic Y            9.30240158 +/-    0.0000
Ecliptic Z           -3.72689398 +/-    0.0000
Ecliptic XDOT        -0.00400492 +/-    0.0000
Ecliptic YDOT         0.00370628 +/-    0.0000
Ecliptic ZDOT         0.00020880 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   14.80696793 +/-    0.0000
Geocenter to KBO     14.12818137 +/-    0.0000
# Hcoef:  8.72

The following table shows the complete astrometric record for 471512. 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 (471512) followed by the observatory code and reference code for the source of the astrometry.

1998 09  19.424329 03 02 02.58   +01 14 35.3   20.8V 471512    645  C~1rRW      
1998 09  19.425162 03 02 02.57   +01 14 35.3         471512    645  C~1rRW      
1998 09  19.427650 03 02 02.56   +01 14 35.2         471512    645  C~1rRW      
1998 10  29.310729 02 56 17.24   +00 28 59.7   20.5V 471512    645  C~1rRW      
1998 10  29.311551 02 56 17.23   +00 28 59.7         471512    645  C~1rRW      
1998 10  29.314039 02 56 17.20   +00 28 59.5         471512    645  C~1rRW      
1998 11  16.260081 02 52 54.08   +00 14 54.1   20.6V 471512    645  C~1rRW      
1998 11  16.260903 02 52 54.08   +00 14 54.0         471512    645  C~1rRW      
1998 11  16.263391 02 52 54.06   +00 14 54.0         471512    645  C~1rRW      
1998 11  17.256609 02 52 42.89   +00 14 18.8   20.4V 471512    645  C~1rRW      
1998 11  17.257431 02 52 42.89   +00 14 18.8         471512    645  C~1rRW      
1998 11  17.259919 02 52 42.86   +00 14 18.7         471512    645  C~1rRW      
1998 11  19.251065 02 52 20.67   +00 13 16.9   20.2V 471512    645  C~1rRW      
1998 11  19.251481 02 52 20.66   +00 13 16.9   20.3V 471512    645  C~1rRW      
1998 11  19.251898 02 52 20.66   +00 13 16.9         471512    645  C~1rRW      
1998 11  19.252315 02 52 20.66   +00 13 16.9         471512    645  C~1rRW      
1998 11  19.254387 02 52 20.63   +00 13 16.8         471512    645  C~1rRW      
1998 11  19.254803 02 52 20.63   +00 13 16.8         471512    645  C~1rRW      
1998 11  21.245428 02 51 58.75   +00 12 16.2   20.2V 471512    645  C~1rRW      
1998 11  21.246262 02 51 58.74   +00 12 16.1   20.2V 471512    645  C~1rRW      
1998 11  21.248750 02 51 58.71   +00 12 16.1   20.2V 471512    645  C~1rRW      
2001 12  17.24559  04 24 16.23   +07 37 28.6   19.4R 471512    644  C~0dpP      
2001 12  17.27255  04 24 15.85   +07 37 30.8   20.2R 471512    644  C~0dpP      
2002 12  12.30738  04 58 34.36   +09 53 19.0   19.9R 471512    644  C~0dpP      
2002 12  12.37010  04 58 33.57   +09 53 19.0   19.9R 471512    644  C~0dpP      
2003 01  27.23832  04 51 11.00   +10 10 58.2   19.7R 471512    644  C~0dpP      
2003 01  27.24060  04 51 11.03   +10 10 59.4   19.9R 471512    644  C~0dpP      
2003 01  27.26168  04 51 10.90   +10 11 00.0   20.1R 471512    644  C~0dpP      
2003 01  27.28270  04 51 10.74   +10 11 00.3   19.9R 471512    644  C~0dpP      
2003 02  03.16787  04 50 40.61   +10 16 39.8   20.0R 471512    644  C~0dpP      
2003 02  03.20998  04 50 40.44   +10 16 41.8   20.7R 471512    644  C~0dpP      
2008 02  10.18992  07 23 20.94   +17 23 34.8   21.1V 471512    G96  C~0dpP      
2008 02  10.19905  07 23 20.86   +17 23 35.0   20.9V 471512    G96  C~0dpP      
2008 02  10.20819  07 23 20.76   +17 23 35.3   20.4V 471512    G96  C~0dpP      
2008 02  10.21730  07 23 20.68   +17 23 35.8   20.7V 471512    G96  C~0dpP      
2009 12  21.503426 08 24 31.87   +17 30 35.2   21.2R 471512    568  C~0rp9      
2009 12  21.507454 08 24 31.84   +17 30 35.3   21.2R 471512    568  C~0rp9      
2009 12  21.511493 08 24 31.79   +17 30 35.4   21.2R 471512    568  C~0rp9      
2011 01  27.27069  08 42 10.36   +18 02 47.3   21.2V 471512    G96  C~0dpP      
2011 01  27.27767  08 42 10.26   +18 02 47.4   20.9V 471512    G96  C~0dpP      
2011 01  27.28470  08 42 10.18   +18 02 48.3   21.1V 471512    G96  C~0dpP      
2011 01  27.29168  08 42 10.11   +18 02 48.3   21.1V 471512    G96  C~0dpP      
2012 02  01.37991  09 03 30.60   +18 00 33.4   21.9V 471512    G96  C~0d7l      
2012 02  01.39017  09 03 30.45   +18 00 33.8   21.7V 471512    G96  C~0d7l      
2012 02  01.39996  09 03 30.34   +18 00 34.4   21.9V 471512    G96  C~0d7l      
2012 02  01.40970  09 03 30.24   +18 00 34.5   21.7V 471512    G96  C~0d7l      
2012 02  01.50778  09 03 29.23   +18 00 40.3   21.5V 471512    G96  C~0d7l      
2012 02  01.50854  09 03 29.19   +18 00 40.8   21.1V 471512    G96  C~0d7l      
2012 02  01.50929  09 03 29.23   +18 00 40.5   21.3V 471512    G96  C~0d7l      
2012 02  01.51004  09 03 29.23   +18 00 40.8   21.6V 471512    G96  C~0d7l      
2012 02  02.24104  09 03 21.83   +18 01 22.1         471512    291  C~0d7l      
2012 02  02.25947  09 03 21.64   +18 01 23.1         471512    291  C~0d7l      
2012 02  02.27789  09 03 21.35   +18 01 23.3         471512    291  C~0d7l      
2012 02  03.11314  09 03 12.91   +18 02 10.1         471512    J95  C~0d7l      
2012 02  03.13702  09 03 12.64   +18 02 12.6   21.5R 471512    J95  C~0d7l      
2012 02  13.31454  09 01 30.071  +18 11 35.45  21.4w 471512    F51  C~1vWb      
2012 02  13.32910  09 01 29.926  +18 11 36.29  21.6w 471512    F51  C@0612      
2012 02  13.34365  09 01 29.779  +18 11 37.10  21.7w 471512    F51  C@0612      
2012 02  13.35829  09 01 29.627  +18 11 37.92  21.7w 471512    F51  C@0612      
2014 01  24.38317  09 44 23.100  +17 17 26.38  21.8w 471512    F51  C~1vWb      
2014 01  24.39634  09 44 22.962  +17 17 27.44  21.6w 471512    F51  C~1vWb      
2014 01  24.40955  09 44 22.858  +17 17 28.17  21.7w 471512    F51  C~1vWb      
2014 01  24.42277  09 44 22.725  +17 17 29.01  22.1w 471512    F51  C~1vWb      
2014 03  22.16359  09 36 08.52   +18 06 41.7   22.1V 471512    G96  C~127Z      
2014 03  22.17119  09 36 08.42   +18 06 42.0   21.4V 471512    G96  C~127Z      
2014 03  22.17874  09 36 08.34   +18 06 42.1   21.8V 471512    G96  C~127Z      
2014 03  22.18629  09 36 08.24   +18 06 42.3   21.2V 471512    G96  C~127Z      
2015 01  17.41835  10 02 59.741  +16 44 41.16  22.0w 471512    F51  C@0612      
2015 01  17.43037  10 02 59.669  +16 44 41.91  22.1w 471512    F51  C~1vWb      
2015 01  17.44241  10 02 59.575  +16 44 42.45  22.0w 471512    F51  C@0612      
2015 01  17.45445  10 02 59.486  +16 44 43.27  21.9w 471512    F51  C@0612      
2015 01  17.57957  10 02 58.544  +16 44 50.38  22.0w 471512    F51  C@0612      
2015 01  17.59193  10 02 58.453  +16 44 51.13  22.0w 471512    F51  C@0612      
2015 01  17.60428  10 02 58.366  +16 44 51.83  22.1w 471512    F51  C~1vWb      
2015 01  17.61662  10 02 58.272  +16 44 52.52  21.8w 471512    F51  C@0612      
2015 01  25.42275  10 01 57.662  +16 52 28.43  21.9w 471512    F51  C@0612      
2015 01  25.43462  10 01 57.576  +16 52 29.19  21.9w 471512    F51  C@0612      
2015 01  25.44652  10 01 57.467  +16 52 29.86  21.9w 471512    F51  C~1vWb      
2015 01  25.45846  10 01 57.369  +16 52 30.63  21.8w 471512    F51  C@0612      
2015 03  14.26553  09 54 59.089  +17 36 47.49  22.1w 471512    F51  C~1vWb      
2015 03  14.27905  09 54 58.980  +17 36 48.26  22.1w 471512    F51  C@0612      
2015 03  14.29328  09 54 58.871  +17 36 48.81  22.1w 471512    F51  C~1vWb      
2015 03  14.30626  09 54 58.764  +17 36 49.30  22.1w 471512    F51  C@0612      
2016 02  05.38392  10 16 57.898  +16 34 03.90  21.7w 471512    F51  C~1rRW      
2016 02  05.39688  10 16 57.783  +16 34 05.06  22.1w 471512    F51  C~1rRW      
2016 02  05.40989  10 16 57.696  +16 34 05.42  21.9w 471512    F51  C~1rRW      
2016 02  05.42291  10 16 57.553  +16 34 06.74  22.1w 471512    F51  C~1rRW      
2016 02  06.57423  10 16 47.842  +16 35 16.34  22.0w 471512    F51  C~1rRW      
2016 02  06.58697  10 16 47.788  +16 35 16.69  22.2w 471512    F51  C~1rRW      
2016 02  06.59973  10 16 47.635  +16 35 17.81  22.0w 471512    F51  C~1rRW      
2016 02  09.56912  10 16 22.397  +16 38 17.16  22.0w 471512    F51  C~1rRW      
2016 02  09.58265  10 16 22.255  +16 38 18.08  22.0w 471512    F51  C~1rRW      
2016 02  11.37843  10 16 06.807  +16 40 06.23  22.2w 471512    F51  C~1rRW      
2016 02  11.40208  10 16 06.581  +16 40 07.89  22.4w 471512    F51  C~1rRW      
2016 04  03.24503  10 09 15.582  +17 21 09.75  22.1w 471512    F51  C~1rRW      
2016 04  03.26835  10 09 15.452  +17 21 10.31  22.2w 471512    F51  C~1rRW      

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    -0.24       0.00     1.15
  2   0.0000      0.00    -0.89       0.00    -0.48
  3   0.0000      0.00    -0.85       0.00    -0.40
  4   0.1092      0.00     0.27       0.00    -0.30
  5   0.1092      0.00     0.26       0.00    -0.25
  6   0.1092      0.00     0.24       0.00    -0.31
  7   0.1583      0.00     0.59       0.00    -0.40
  8   0.1583      0.00     0.73       0.00    -0.47
  9   0.1584      0.00     0.86       0.00    -0.39
 10   0.1611      0.00     0.24       0.00    -1.11
 11   0.1611      0.00     0.38       0.00    -1.08
 12   0.1611      0.00     0.36       0.00    -1.09
 13   0.1665      0.00    -0.17       0.00     1.84
 14   0.1665      0.00    -0.25       0.00     1.85
 15   0.1665      0.00    -0.18       0.00     1.87
 16   0.1665      0.00    -0.11       0.00     1.88
 17   0.1665      0.00    -0.21       0.00     1.84
 18   0.1665      0.00    -0.14       0.00     1.86
 19   0.1720      0.00     0.17       0.00    -0.01
 20   0.1720      0.00     0.16       0.00    -0.09
 21   0.1720      0.00     0.13       0.00    -0.02
 22   3.2439      0.00     0.36       0.00    -1.19
 23   3.2439      0.00    -0.66       0.00     0.92
 24   4.2297      0.00     0.20       0.00    -0.26
 25   4.2298      0.00     0.13       0.00    -0.18
 26   4.3554      0.00     0.17       0.00    -0.48
 27   4.3554      0.00     0.81       0.00     0.61
 28   4.3555      0.00     0.59       0.00     0.24
 29   4.3555      0.00    -0.09       0.00    -0.43
 30   4.3744      0.00     0.16       0.00    -0.75
 31   4.3745      0.00    -0.06       0.00    -0.95
 32   9.3929      0.00     0.39       0.00    -0.36
 33   9.3929      0.00     0.48       0.00    -0.57
 34   9.3930      0.00     0.27       0.00    -0.67
 35   9.3930      0.00     0.36       0.00    -0.58
 36  11.2555      0.00     0.22       0.00    -0.14
 37  11.2555      0.00     0.29       0.00    -0.20
 38  11.2555      0.00     0.06       0.00    -0.26
 39  12.3555      0.00     0.40       0.00    -0.01
 40  12.3555      0.00     0.03       0.00    -0.29
 41  12.3555      0.00    -0.04       0.00     0.23
 42  12.3556      0.00     0.03       0.00    -0.15
 43  13.3688      0.00     0.70       0.00     0.06
 44  13.3688      0.00     0.04       0.00    -0.11
 45  13.3689      0.00    -0.09       0.00    -0.06
 46  13.3689      0.00    -0.08       0.00    -0.51
 47  13.3692      0.00    -0.09       0.00    -0.19
 48  13.3692      0.00    -0.58       0.00     0.27
 49  13.3692      0.00     0.14       0.00    -0.07
 50  13.3692      0.00     0.25       0.00     0.19
 51  13.3712      0.00     0.18       0.00     0.16
 52  13.3712      0.00     0.19       0.00     0.11
 53  13.3713      0.00    -1.30       0.00    -0.73
 54  13.3735      0.00    -0.12       0.00    -0.83
 55  13.3736      0.00    -0.49       0.00     0.33
 56  13.4015      0.00     0.23       0.00    -0.06
 57  13.4015      0.00     0.26       0.00    -0.02
 58  13.4016      0.00     0.26       0.00    -0.00
 59  13.4016      0.00     0.20       0.00     0.02
 60  15.3483      0.00     0.45       0.00    -0.16
 61  15.3483      0.00     0.13       0.00     0.11
 62  15.3484      0.00     0.33       0.00     0.06
 63  15.3484      0.00     0.10       0.00     0.11
 64  15.5037      0.00     1.05       0.00     0.34
 65  15.5038      0.00     0.32       0.00     0.37
 66  15.5038      0.00    -0.12       0.00     0.21
 67  15.5038      0.00    -0.86       0.00     0.14
 68  16.3285      0.00    -0.05       0.00     0.11
 69  16.3286      0.00     0.22       0.00     0.17
 70  16.3286      0.00     0.16       0.00     0.02
 71  16.3286      0.00     0.18       0.00     0.15
 72  16.3290      0.00     0.15       0.00     0.10
 73  16.3290      0.00     0.18       0.00     0.15
 74  16.3290      0.00     0.26       0.00     0.15
 75  16.3291      0.00     0.24       0.00     0.14
 76  16.3504      0.00     0.05       0.00     0.01
 77  16.3505      0.00     0.24       0.00     0.06
 78  16.3505      0.00     0.09       0.00     0.02
 79  16.3505      0.00     0.11       0.00     0.08
 80  16.4814      0.00    -0.07       0.00    -0.04
 81  16.4815      0.00    -0.08       0.00     0.13
 82  16.4815      0.00    -0.01       0.00     0.05
 83  16.4815      0.00    -0.06       0.00    -0.03
 84  17.3798      0.00     0.06       0.00    -0.09
 85  17.3798      0.00    -0.01       0.00     0.28
 86  17.3798      0.00     0.35       0.00    -0.15
 87  17.3799      0.00    -0.13       0.00     0.38
 88  17.3830      0.00    -0.27       0.00     0.24
 89  17.3831      0.00     0.56       0.00    -0.17
 90  17.3831      0.00    -0.10       0.00     0.18
 91  17.3912      0.00     0.64       0.00    -0.11
 92  17.3913      0.00     0.28       0.00     0.00
 93  17.3962      0.00     0.46       0.00    -0.11
 94  17.3962      0.00     0.20       0.00     0.12
 95  17.5382      0.00    -0.04       0.00     0.11
 96  17.5382      0.00     0.03       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.

471512    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        29.246    29.246    29.246
ecceobj         0.505     0.505     0.505
incobj         14.583    14.583    14.583
qmin           14.466    14.420    14.466
qmax           44.026    47.279    44.026
amean          29.105    29.831    29.102
amin           28.959    28.892    28.962
amax           29.246    31.052    29.246
emean           0.499     0.506     0.499
emin            0.492     0.485     0.493
emax            0.505     0.523     0.505
imean          13.379    11.902    13.416
imin           13.034    10.738    13.034
imax           13.675    13.811    13.697
excite_mean     0.550     0.547     0.550
fracstop        0.001     0.019     0.001
cjmean          2.694     2.689     2.694

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       295.1     214.3     295.4
kozaiamp          1.8     179.7       2.5