Orbit Fit and Astrometric record for 505624

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: 505624    
# Created Mon Dec 18 02:36:54 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   69 observations of   69
# Arc:   5.34y
# First observation: 2012/04/24
#  Last observation: 2017/08/25
# Chi-squared of fit:    69.45 DOF:  132 RMS:  0.18
# Min/Max residuals:    -1.38    0.43
# Exact a, adot, b, bdot, g, gdot:
  1.538305E-05  2.629695E-02  4.335704E-06  6.732509E-03  2.607017E-02 -3.615609E-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
   19.193676 -129.789182    0.272042    0.319473   -0.917836  2456042.039506
# Heliocentric elements and errors
Epoch:              2456042.5000  =  2012/04/25
Mean Anomaly:          311.65676 +/-     0.000
Argument of Peri:      118.44168 +/-     0.000
Long of Asc Node:      178.59749 +/-     0.000
Inclination:            23.51199 +/-     0.000
Eccentricity:         0.16831046 +/-    0.0000
Semi-Major Axis:     43.31195431 +/-    0.0000
Time of Perihelion: 2470023.6656 +/-       0.0
Perihelion:          36.02209931 +/-    0.0000
Aphelion:            50.60180930 +/-    0.0000
Period (y)              285.0492 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -24.01102070 +/-    0.0000
Ecliptic Y          -28.40726572 +/-    0.0000
Ecliptic Z           12.61087893 +/-    0.0000
Ecliptic XDOT         0.00249534 +/-    0.0000
Ecliptic YDOT        -0.00130958 +/-    0.0000
Ecliptic ZDOT         0.00054301 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.27522289 +/-    0.0000
Geocenter to KBO     38.35813608 +/-    0.0000
# Hcoef:  5.82

The following table shows the complete astrometric record for 505624. 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 (505624) followed by the observatory code and reference code for the source of the astrometry.

2012 04  24.53874  15 31 14.720  +00 44 35.41  21.8g 505624    F51  C~1vXL      
2012 04  24.54902  15 31 14.674  +00 44 35.68  22.0g 505624    F51  C~1vXL      
2012 04  24.55951  15 31 14.612  +00 44 36.10  21.8r 505624    F51  C~1vXL      
2012 04  24.56929  15 31 14.573  +00 44 36.49  21.5r 505624    F51  C~1vXL      
2014 04  08.50112  15 44 51.966  +00 34 03.25  21.7w 505624    F51  C~1vXL      
2014 04  08.51377  15 44 51.920  +00 34 03.65  21.6w 505624    F51  C~1vXL      
2014 04  08.52648  15 44 51.873  +00 34 04.21  21.9w 505624    F51  C~1vXL      
2014 04  08.53928  15 44 51.830  +00 34 04.55  21.6w 505624    F51  C~1vXL      
2014 04  24.50340  15 43 47.987  +00 43 00.29  22.0w 505624    F51  C~1vXL      
2014 04  24.51600  15 43 47.905  +00 43 00.47  21.9w 505624    F51  C~1vXL      
2014 04  24.52852  15 43 47.822  +00 43 01.15  22.0w 505624    F51  C~1vXL      
2014 04  24.54109  15 43 47.795  +00 43 01.51  22.0w 505624    F51  C~1vXL      
2014 05  04.40341  15 43 02.385  +00 47 49.15  21.8w 505624    F51  C~1vXL      
2014 05  04.41540  15 43 02.328  +00 47 49.38  21.6w 505624    F51  C~1vXL      
2014 05  04.42742  15 43 02.272  +00 47 49.69  21.7w 505624    F51  C~1vXL      
2014 05  04.43945  15 43 02.210  +00 47 50.03  21.7w 505624    F51  C~1vXL      
2014 05  28.33265  15 41 05.026  +00 56 11.89  21.6w 505624    F51  C~1vXL      
2014 05  28.34488  15 41 04.964  +00 56 12.41  21.7w 505624    F51  C~1vXL      
2014 05  28.35703  15 41 04.905  +00 56 12.41  21.6w 505624    F51  C~1vXL      
2014 05  28.36918  15 41 04.842  +00 56 12.50  21.6w 505624    F51  C~1vXL      
2014 07  01.36799  15 38 40.000  +00 58 19.78  21.8w 505624    F51  C~1vXL      
2014 07  01.38001  15 38 39.972  +00 58 19.68  21.7w 505624    F51  C~1vXL      
2014 07  01.39201  15 38 39.916  +00 58 19.73  21.7w 505624    F51  C~1vXL      
2014 07  01.40401  15 38 39.875  +00 58 19.49  21.7w 505624    F51  C~1vXL      
2015 02  17.59070  15 52 11.376  +00 03 24.03  21.8w 505624    F51  C~1vXL      
2015 02  17.60299  15 52 11.386  +00 03 24.33  21.8w 505624    F51  C~1vXL      
2015 02  17.61540  15 52 11.403  +00 03 24.86  21.7w 505624    F51  C~1vXL      
2015 02  17.62778  15 52 11.419  +00 03 25.18  21.5w 505624    F51  C~1vXM      
2015 02  18.58947  15 52 12.608  +00 03 55.12  21.9w 505624    F51  C~1vXM      
2015 02  18.60179  15 52 12.619  +00 03 55.54  22.1w 505624    F51  C~1vXM      
2015 02  18.61416  15 52 12.632  +00 03 56.19  22.2w 505624    F51  C~1vXM      
2015 02  18.62656  15 52 12.645  +00 03 56.59  22.0w 505624    F51  C~1vXM      
2015 03  25.54630  15 51 51.651  +00 24 34.88  21.7w 505624    F51  C~1vXM      
2015 03  25.55867  15 51 51.628  +00 24 35.43  21.7w 505624    F51  C~1vXM      
2015 03  25.57111  15 51 51.602  +00 24 35.76  21.7w 505624    F51  C~1vXM      
2015 03  25.60292  15 51 51.515  +00 24 37.03  21.7w 505624    F51  C~1vXM      
2015 03  25.61445  15 51 51.492  +00 24 37.57  21.9w 505624    F51  C~1vXM      
2015 03  27.53494  15 51 46.887  +00 25 49.19  21.9w 505624    F51  C~1vXM      
2015 03  27.54708  15 51 46.893  +00 25 49.30  21.6w 505624    F51  C~1vXM      
2015 03  27.55929  15 51 46.872  +00 25 49.88  21.7w 505624    F51  C~1vXM      
2015 03  27.57137  15 51 46.864  +00 25 50.26  22.2w 505624    F51  C~1vXM      
2015 04  04.47265  15 51 24.789  +00 30 41.36  21.4w 505624    F51  C~1vXM      
2015 04  04.48462  15 51 24.755  +00 30 41.95  21.6w 505624    F51  C~1vXM      
2015 04  04.49663  15 51 24.714  +00 30 42.48  21.5w 505624    F51  C~1vXM      
2015 04  12.40546  15 50 57.851  +00 35 24.70  21.7w 505624    F51  C~1vXM      
2015 04  12.44486  15 50 57.725  +00 35 26.20  21.8w 505624    F51  C~1vXM      
2015 04  12.45703  15 50 57.667  +00 35 26.65  21.8w 505624    F51  C~1vXM      
2015 04  12.46924  15 50 57.616  +00 35 27.09  21.6w 505624    F51  C~1vXM      
2015 04  13.55194  15 50 53.593  +00 36 04.55  21.1i 505624    F51  C~1vXM      
2015 04  13.56486  15 50 53.544  +00 36 05.19  21.3i 505624    F51  C~1vXM      
2015 04  13.57775  15 50 53.488  +00 36 05.55  21.1i 505624    F51  C~1vXM      
2015 04  13.59068  15 50 53.443  +00 36 06.02  21.1i 505624    F51  C~1vXM      
2015 05  11.44967  15 48 49.911  +00 49 58.86  21.6r 505624    F51  C~1vXM      
2015 05  11.46237  15 48 49.842  +00 49 59.30  21.6r 505624    F51  C~1vXM      
2015 05  11.47529  15 48 49.783  +00 49 59.44  21.5r 505624    F51  C~1vXM      
2015 05  11.48818  15 48 49.724  +00 49 59.53  21.7r 505624    F51  C~1vXM      
2015 05  13.39037  15 48 40.373  +00 50 44.13  21.5w 505624    F51  C~1vXM      
2015 05  13.40298  15 48 40.312  +00 50 44.58  21.4w 505624    F51  C~1vXM      
2015 05  13.41560  15 48 40.251  +00 50 45.01  21.6w 505624    F51  C~1vXM      
2015 05  13.42827  15 48 40.186  +00 50 45.27  21.7w 505624    F51  C~1vXM      
2015 06  06.43706  15 46 42.204  +00 57 14.22  21.2i 505624    F51  C~1vXM      
2015 06  06.44966  15 46 42.159  +00 57 14.52  21.3i 505624    F51  C~1vXM      
2015 06  06.46223  15 46 42.096  +00 57 14.49  21.0i 505624    F51  C~1vXM      
2017 05  26.31953  16 00 23.62   +00 53 32.8   21.2R 505624    G37  C~2Gid      
2017 05  26.36473  16 00 23.38   +00 53 33.5         505624    G37  C~2Gid      
2017 05  26.39978  16 00 23.21   +00 53 34.1         505624    G37  C~2Gid      
2017 08  23.24780  15 56 20.130  +00 37 19.69        505624    568  C~2MZq      
2017 08  23.25176  15 56 20.131  +00 37 19.58        505624    568  C~2MZq      
2017 08  25.28289  15 56 22.347  +00 36 12.67        505624    568  C~2MZq      

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     0.05       0.00    -1.38
  2   0.0000      0.00     0.17       0.00    -0.15
  3   0.0001      0.00    -0.03       0.00    -0.05
  4   0.0001      0.00     0.06       0.00     0.04
  5   1.9547      0.00     0.16       0.00     0.05
  6   1.9548      0.00     0.16       0.00    -0.00
  7   1.9548      0.00     0.14       0.00     0.10
  8   1.9548      0.00     0.19       0.00    -0.01
  9   1.9985      0.00     0.16       0.00     0.05
 10   1.9986      0.00    -0.22       0.00    -0.16
 11   1.9986      0.00    -0.62       0.00     0.13
 12   1.9986      0.00    -0.17       0.00     0.10
 13   2.0256      0.00     0.09       0.00     0.08
 14   2.0257      0.00     0.11       0.00    -0.02
 15   2.0257      0.00     0.14       0.00    -0.03
 16   2.0257      0.00     0.09       0.00    -0.02
 17   2.0912      0.00     0.07       0.00    -0.09
 18   2.0912      0.00     0.05       0.00     0.25
 19   2.0912      0.00     0.07       0.00     0.08
 20   2.0913      0.00     0.03       0.00    -0.01
 21   2.1843      0.00    -0.03       0.00    -0.03
 22   2.1844      0.00     0.17       0.00    -0.04
 23   2.1844      0.00    -0.06       0.00     0.09
 24   2.1844      0.00    -0.05       0.00    -0.07
 25   2.8174      0.00     0.09       0.00    -0.03
 26   2.8174      0.00     0.01       0.00    -0.12
 27   2.8175      0.00     0.04       0.00     0.03
 28   2.8175      0.00     0.06       0.00    -0.04
 29   2.8201      0.00     0.06       0.00    -0.14
 30   2.8202      0.00     0.02       0.00    -0.10
 31   2.8202      0.00     0.01       0.00     0.16
 32   2.8202      0.00     0.00       0.00     0.17
 33   2.9158      0.00    -0.04       0.00    -0.06
 34   2.9159      0.00     0.06       0.00     0.03
 35   2.9159      0.00     0.11       0.00    -0.11
 36   2.9160      0.00    -0.06       0.00    -0.02
 37   2.9160      0.00     0.01       0.00     0.09
 38   2.9213      0.00    -0.62       0.00     0.19
 39   2.9213      0.00    -0.06       0.00    -0.15
 40   2.9213      0.00     0.09       0.00    -0.03
 41   2.9214      0.00     0.43       0.00    -0.10
 42   2.9430      0.00     0.05       0.00    -0.18
 43   2.9430      0.00     0.11       0.00    -0.03
 44   2.9431      0.00     0.07       0.00     0.06
 45   2.9647      0.00    -0.10       0.00    -0.16
 46   2.9648      0.00     0.22       0.00    -0.04
 47   2.9649      0.00     0.04       0.00    -0.02
 48   2.9649      0.00    -0.04       0.00    -0.00
 49   2.9679      0.00     0.00       0.00    -0.19
 50   2.9679      0.00     0.01       0.00     0.00
 51   2.9679      0.00    -0.09       0.00    -0.09
 52   2.9680      0.00    -0.02       0.00    -0.06
 53   3.0442      0.00     0.11       0.00     0.02
 54   3.0443      0.00     0.03       0.00     0.16
 55   3.0443      0.00     0.11       0.00    -0.01
 56   3.0444      0.00     0.19       0.00    -0.23
 57   3.0496      0.00     0.05       0.00    -0.28
 58   3.0496      0.00     0.09       0.00    -0.12
 59   3.0496      0.00     0.12       0.00     0.02
 60   3.0497      0.00     0.10       0.00    -0.01
 61   3.1154      0.00     0.02       0.00    -0.12
 62   3.1154      0.00     0.25       0.00     0.07
 63   3.1155      0.00     0.21       0.00    -0.07
 64   5.0863      0.00     0.06       0.00     0.10
 65   5.0865      0.00    -0.08       0.00     0.09
 66   5.0865      0.00     0.04       0.00     0.14
 67   5.3298      0.00     0.02       0.00    -0.04
 68   5.3298      0.00    -0.02       0.00    -0.02
 69   5.3354      0.00    -0.01       0.00    -0.06

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.

505624    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.215    43.215    43.216
ecceobj         0.169     0.169     0.169
incobj         23.546    23.546    23.546
qmin           35.536    35.528    35.525
qmax           51.855    51.885    51.876
amean          43.540    43.538    43.543
amin           43.165    43.164    43.165
amax           43.949    43.950    43.952
emean           0.162     0.162     0.163
emin            0.144     0.144     0.144
emax            0.180     0.181     0.181
imean          23.423    23.423    23.421
imin           22.875    22.881    22.877
imax           23.979    23.967    23.979
excite_mean     0.429     0.429     0.430
fracstop        1.000     1.000     1.000
cjmean          2.869     2.869     2.869

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       189.2     189.6     188.5
kozaiamp        180.0     180.0     179.9