Orbit Fit and Astrometric record for 504555

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: 504555    
# Created Sat Dec 16 02:36:55 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   69 observations of   69
# Arc:   8.01y
# First observation: 2008/09/24
#  Last observation: 2016/09/29
# Chi-squared of fit:   250.74 DOF:  132 RMS:  0.34
# Min/Max residuals:    -1.76    1.06
# Exact a, adot, b, bdot, g, gdot:
  1.654534E-05  3.816951E-02 -4.591909E-06 -1.031892E-02  3.265437E-02  6.012058E-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
  -11.488368   14.486147    0.218779   -0.194657   -0.957920  2454733.906584
# Heliocentric elements and errors
Epoch:              2454734.5000  =  2008/09/25
Mean Anomaly:           26.96952 +/-     0.000
Argument of Peri:      172.70687 +/-     0.000
Long of Asc Node:      158.71003 +/-     0.000
Inclination:            18.78238 +/-     0.000
Eccentricity:         0.24538813 +/-    0.0000
Semi-Major Axis:     39.52433727 +/-    0.0000
Time of Perihelion: 2447935.1703 +/-       0.0
Perihelion:          29.82553394 +/-    0.0000
Aphelion:            49.22314059 +/-    0.0000
Period (y)              248.4878 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.05868777 +/-    0.0000
Ecliptic Y            7.53534893 +/-    0.0000
Ecliptic Z           -6.09943387 +/-    0.0000
Ecliptic XDOT        -0.00048299 +/-    0.0000
Ecliptic YDOT         0.00318104 +/-    0.0000
Ecliptic ZDOT        -0.00094835 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.58328547 +/-    0.0000
Geocenter to KBO     30.62371368 +/-    0.0000
# Hcoef:  6.37

The following table shows the complete astrometric record for 504555. 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 (504555) followed by the observatory code and reference code for the source of the astrometry.

2008 09  24.40583  01 11 05.45   -04 53 20.3   21.6R 504555    675  C~02Ms      
2008 09  24.44737  01 11 05.25   -04 53 22.0   21.4R 504555    675  C~02Ms      
2008 09  25.29369  01 11 00.70   -04 54 00.8   21.4R 504555    675  C~02Ms      
2008 09  25.33506  01 11 00.49   -04 54 02.2   21.5R 504555    675  C~02Ms      
2008 10  20.01122  01 08 41.51   -05 10 53.5         504555    807  C~02Ms      
2008 10  20.11786  01 08 40.89   -05 10 57.6         504555    807  C~02Ms      
2008 11  20.284684 01 06 06.30   -05 24 03.7   21.1V 504555    645  C~2KuK      
2008 11  20.285513 01 06 06.30   -05 24 03.7   20.8V 504555    645  C~2KuK      
2008 11  20.288001 01 06 06.29   -05 24 03.7   22.3V 504555    645  C~2KuK      
2008 11  30.05142  01 05 31.92   -05 25 33.6         504555    807  C~02Ms      
2008 11  30.19469  01 05 31.49   -05 25 34.4         504555    807  C~02Ms      
2008 12  22.175023 01 04 50.54   -05 23 55.1   21.1V 504555    645  C~1S74      
2008 12  22.175852 01 04 50.54   -05 23 55.1   20.6V 504555    645  C~1S74      
2008 12  22.178340 01 04 50.53   -05 23 55.1   22.2V 504555    645  C~1S74      
2009 08  18.34411  01 22 33.51   -04 07 31.5         504555    675  C~08Up      
2009 08  18.39900  01 22 33.38   -04 07 33.3         504555    675  C~08Up      
2009 08  18.45398  01 22 33.27   -04 07 35.9         504555    675  C~08Up      
2009 08  21.43102  01 22 25.53   -04 09 38.3         504555    675  C~08Up      
2009 10  18.24959  01 17 51.54   -04 51 32.8         504555    568  C~0Abd      
2009 10  18.27170  01 17 51.41   -04 51 33.6         504555    568  C~0Abd      
2010 10  08.05132  01 27 43.246  -04 26 15.93  20.8R 504555    809  C~0NmC      
2010 10  08.05388  01 27 43.223  -04 26 15.61  20.6R 504555    809  C~0NmC      
2010 10  08.13554  01 27 42.735  -04 26 19.50  21.0R 504555    809  C~0NmC      
2010 10  08.13810  01 27 42.748  -04 26 18.92  20.2R 504555    809  C~0NmC      
2010 10  08.21853  01 27 42.296  -04 26 22.81  20.7R 504555    809  C~0NmC      
2010 10  08.22109  01 27 42.269  -04 26 22.59  20.5R 504555    809  C~0NmC      
2010 10  31.36836  01 25 31.980  -04 40 19.73  21.2w 504555    F51  C~1vVv      
2010 10  31.38237  01 25 31.899  -04 40 20.12  21.4w 504555    F51  C~1vVv      
2010 10  31.39761  01 25 31.809  -04 40 20.65  21.3w 504555    F51  C~1vVv      
2010 10  31.41164  01 25 31.737  -04 40 21.01  21.4w 504555    F51  C~1vVv      
2011 09  25.46689  01 37 37.113  -03 58 29.33  21.5w 504555    F51  C~1vVv      
2011 09  25.47954  01 37 37.041  -03 58 29.94  21.3w 504555    F51  C~1vVv      
2011 09  25.49220  01 37 36.974  -03 58 30.55  21.3w 504555    F51  C~1vVv      
2011 09  25.50483  01 37 36.909  -03 58 31.08  21.3w 504555    F51  C~1vVv      
2012 11  16.34471  01 41 29.280  -04 10 03.31  21.5w 504555    F51  C~1vVv      
2012 11  16.35854  01 41 29.211  -04 10 03.67  21.5w 504555    F51  C~1vVv      
2012 11  16.37235  01 41 29.142  -04 10 03.83  21.3w 504555    F51  C~1vVv      
2013 09  14.49667  01 55 30.713  -03 13 40.59  21.3w 504555    F51  C~1vVv      
2013 09  14.51131  01 55 30.645  -03 13 41.36  21.1w 504555    F51  C~1vVv      
2013 09  14.54058  01 55 30.546  -03 13 42.49  21.2w 504555    F51  C~1vVv      
2014 08  23.58297  02 04 55.514  -02 39 45.66  21.5w 504555    F51  C~1vVv      
2014 08  23.59296  02 04 55.495  -02 39 46.12  21.5w 504555    F51  C~1vVv      
2014 08  23.60297  02 04 55.478  -02 39 46.51  21.6w 504555    F51  C~1vVv      
2014 08  23.61298  02 04 55.459  -02 39 46.89  21.5w 504555    F51  C~1vVv      
2014 09  16.48491  02 03 44.442  -02 56 31.50  20.9i 504555    F51  C~1vVv      
2014 09  16.49760  02 03 44.384  -02 56 32.21  21.1i 504555    F51  C~1vVv      
2014 09  16.51035  02 03 44.337  -02 56 32.92  20.9i 504555    F51  C~1vVv      
2014 09  16.52302  02 03 44.280  -02 56 33.37  21.0i 504555    F51  C~1vVv      
2014 09  24.49300  02 03 09.732  -03 02 22.28  21.9w 504555    F51  C~1vVv      
2014 09  24.50585  02 03 09.683  -03 02 22.91  21.8w 504555    F51  C~1vVv      
2014 09  24.51865  02 03 09.627  -03 02 23.59  21.6w 504555    F51  C~1vVv      
2014 09  24.53145  02 03 09.573  -03 02 24.03  21.6w 504555    F51  C~1vVv      
2014 11  22.37201  01 57 55.295  -03 34 41.94  21.7w 504555    F51  C~1vVv      
2014 11  22.38540  01 57 55.219  -03 34 42.06  21.5w 504555    F51  C~1vVv      
2014 11  22.39882  01 57 55.158  -03 34 42.36  21.5w 504555    F51  C~1vVv      
2014 11  22.41227  01 57 55.111  -03 34 42.42  21.5w 504555    F51  C~1vVv      
2014 11  24.30101  01 57 46.143  -03 35 09.91  21.8w 504555    F51  C~1vVv      
2014 11  24.31443  01 57 46.073  -03 35 10.08  21.9w 504555    F51  C~1vVv      
2014 11  24.32786  01 57 46.006  -03 35 10.18  21.6w 504555    F51  C~1vVv      
2014 11  24.34126  01 57 45.949  -03 35 10.26  21.7w 504555    F51  C~1vVv      
2015 10  11.27860  02 10 02.42   -02 55 30.6   21.2R 504555    695  C~1hUL      
2015 10  11.32378  02 10 02.17   -02 55 31.9         504555    695  C~1hUL      
2015 10  11.37100  02 10 01.93   -02 55 33.7         504555    695  C~1hUL      
2016 09  25.51385  02 19 24.774  -02 26 41.00  21.9w 504555    F51  C~1ySI      
2016 09  25.52653  02 19 24.687  -02 26 42.09  21.8w 504555    F51  C~1ySI      
2016 09  25.55187  02 19 24.567  -02 26 43.21  21.8w 504555    F51  C~1ySI      
2016 09  28.43544  02 19 11.53   -02 28 45.5   22.3g 504555    568  C~2NJ8      
2016 09  28.55513  02 19 10.97   -02 28 50.6   22.4g 504555    568  C~2NJ8      
2016 09  29.56664  02 19 06.25   -02 29 33.3   22.2g 504555    568  C~2NJ8      

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    -1.76
  2   0.0001      0.00     0.87       0.00     0.28
  3   0.0024      0.00     0.80       0.00    -0.40
  4   0.0025      0.00     1.06       0.00     0.07
  5   0.0701      0.00     0.09       0.00     0.68
  6   0.0704      0.00    -0.08       0.00     0.38
  7   0.1557      0.00    -0.33       0.00    -0.03
  8   0.1557      0.00    -0.28       0.00    -0.02
  9   0.1557      0.00    -0.28       0.00     0.01
 10   0.1825      0.00    -0.02       0.00     0.11
 11   0.1829      0.00     0.28       0.00     0.01
 12   0.2430      0.00    -0.14       0.00    -0.19
 13   0.2430      0.00    -0.13       0.00    -0.20
 14   0.2430      0.00    -0.25       0.00    -0.23
 15   0.8978      0.00    -0.81       0.00    -0.24
 16   0.8980      0.00    -0.68       0.00     0.19
 17   0.8981      0.00    -0.24       0.00    -0.18
 18   0.9063      0.00    -0.41       0.00    -0.17
 19   1.0646      0.00    -0.26       0.00    -1.03
 20   1.0647      0.00    -0.30       0.00    -1.02
 21   2.0360      0.00     0.65       0.00     0.13
 22   2.0360      0.00     0.52       0.00     0.56
 23   2.0362      0.00     0.16       0.00     0.06
 24   2.0362      0.00     0.58       0.00     0.75
 25   2.0364      0.00     0.68       0.00     0.20
 26   2.0365      0.00     0.50       0.00     0.52
 27   2.0998      0.00    -0.17       0.00     0.09
 28   2.0999      0.00    -0.22       0.00     0.12
 29   2.0999      0.00    -0.30       0.00     0.04
 30   2.0999      0.00    -0.21       0.00     0.10
 31   3.0009      0.00     0.09       0.00     0.10
 32   3.0009      0.00    -0.01       0.00     0.05
 33   3.0009      0.00    -0.04       0.00     0.01
 34   3.0010      0.00    -0.03       0.00     0.04
 35   4.1449      0.00    -0.03       0.00     0.03
 36   4.1450      0.00    -0.03       0.00    -0.08
 37   4.1450      0.00    -0.03       0.00     0.02
 38   4.9722      0.00     0.08       0.00     0.10
 39   4.9722      0.00    -0.02       0.00    -0.02
 40   4.9723      0.00     0.33       0.00     0.15
 41   5.9115      0.00    -0.06       0.00     0.11
 42   5.9115      0.00    -0.06       0.00     0.04
 43   5.9116      0.00    -0.02       0.00     0.04
 44   5.9116      0.00    -0.02       0.00     0.05
 45   5.9769      0.00    -0.03       0.00     0.18
 46   5.9770      0.00    -0.11       0.00     0.03
 47   5.9770      0.00    -0.02       0.00    -0.12
 48   5.9770      0.00    -0.09       0.00    -0.02
 49   5.9989      0.00    -0.11       0.00     0.18
 50   5.9989      0.00     0.06       0.00     0.11
 51   5.9989      0.00     0.13       0.00    -0.01
 52   5.9990      0.00     0.23       0.00     0.10
 53   6.1601      0.00     0.21       0.00    -0.02
 54   6.1601      0.00     0.06       0.00     0.06
 55   6.1601      0.00     0.13       0.00    -0.04
 56   6.1602      0.00     0.42       0.00     0.11
 57   6.1654      0.00     0.20       0.00    -0.04
 58   6.1654      0.00     0.11       0.00    -0.03
 59   6.1654      0.00     0.07       0.00     0.06
 60   6.1655      0.00     0.18       0.00     0.16
 61   7.0441      0.00    -0.15       0.00    -0.42
 62   7.0443      0.00    -0.21       0.00     0.09
 63   7.0444      0.00     0.05       0.00     0.18
 64   8.0030      0.00     0.43       0.00     0.34
 65   8.0031      0.00    -0.02       0.00    -0.21
 66   8.0031      0.00    -0.09       0.00    -0.25
 67   8.0110      0.00     0.03       0.00    -0.01
 68   8.0114      0.00     0.13       0.00    -0.04
 69   8.0141      0.00     0.11       0.00    -0.00

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.

504555    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.743    39.743    39.743
ecceobj         0.248     0.248     0.248
incobj         18.771    18.771    18.771
qmin           27.427    27.427    27.427
qmax           52.162    52.162    52.162
amean          39.454    39.454    39.454
amin           39.007    39.007    39.007
amax           40.027    40.027    40.027
emean           0.245     0.245     0.245
emin            0.172     0.172     0.172
emax            0.303     0.303     0.303
imean          17.841    17.841    17.840
imin           14.990    14.991    14.990
imax           20.394    20.394    20.394
excite_mean     0.394     0.394     0.394
fracstop        1.000     1.000     1.000
cjmean          2.874     2.874     2.874

libcent 0       180.0     180.0     180.0
libamp  0        85.8      85.8      85.8
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        70.1      70.0      70.1
kozaiamp         86.1      86.1      86.1