Orbit Fit and Astrometric record for 505412

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: 505412    
# Created Fri Dec 15 02:36:52 2017
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   67 observations of   67
# Arc:   3.32y
# First observation: 2013/08/09
#  Last observation: 2016/12/05
# Chi-squared of fit:    26.00 DOF:  128 RMS:  0.11
# Min/Max residuals:    -0.20    0.44
# Exact a, adot, b, bdot, g, gdot:
  1.565251E-05  2.609119E-02  3.730329E-06  5.812970E-03  2.603403E-02  4.829717E-04
# 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
  -16.911999   31.248259    0.978026   -0.079537   -0.261730  2456514.100228
# Heliocentric elements and errors
Epoch:              2456514.5000  =  2013/08/10
Mean Anomaly:          347.43523 +/-     0.000
Argument of Peri:      318.24826 +/-     0.000
Long of Asc Node:       83.20340 +/-     0.000
Inclination:            20.57981 +/-     0.000
Eccentricity:         0.03585827 +/-    0.0000
Semi-Major Axis:     40.08695012 +/-    0.0000
Time of Perihelion: 2459750.1014 +/-       0.0
Perihelion:          38.64950161 +/-    0.0000
Aphelion:            41.52439863 +/-    0.0000
Period (y)              253.8123 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.15949566 +/-    0.0000
Ecliptic Y           18.37280241 +/-    0.0000
Ecliptic Z          -11.17376552 +/-    0.0000
Ecliptic XDOT        -0.00123601 +/-    0.0000
Ecliptic YDOT         0.00246238 +/-    0.0000
Ecliptic ZDOT         0.00057024 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.68651515 +/-    0.0000
Geocenter to KBO     38.41127682 +/-    0.0000
# Hcoef:  7.20

The following table shows the complete astrometric record for 505412. 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 (505412) followed by the observatory code and reference code for the source of the astrometry.

2013 08  09.59945  02 19 41.197  -03 59 02.00  22.0i 505412    F51  C~17Lb      
2013 08  09.60535  02 19 41.197  -03 59 02.05  22.4i 505412    F51  C~17Lb      
2013 08  09.60830  02 19 41.197  -03 59 02.21  22.2i 505412    F51  C~17Lb      
2013 08  09.61419  02 19 41.184  -03 59 02.38  22.3i 505412    F51  C~17Lb      
2013 08  09.62008  02 19 41.191  -03 59 02.58  22.2i 505412    F51  C~17Lb      
2013 08  30.204831 02 19 17.59   -04 08 40.4   24.5g 505412    W84  C~16e5      
2013 08  30.207027 02 19 17.59   -04 08 40.7   23.3r 505412    W84  C~16e5      
2013 08  30.209370 02 19 17.57   -04 08 40.7   22.5i 505412    W84  C~16e5      
2013 08  30.213185 02 19 17.56   -04 08 40.7   22.2z 505412    W84  C~16e5      
2013 09  03.60287  02 19 07.552  -04 10 59.00  22.3i 505412    F51  C~17Lb      
2013 09  03.60582  02 19 07.540  -04 10 58.93  22.1i 505412    F51  C~17Lb      
2013 09  03.62055  02 19 07.506  -04 10 59.38  22.3i 505412    F51  C~17Lb      
2013 09  03.62351  02 19 07.502  -04 10 59.55  22.1i 505412    F51  C~17Lb      
2013 09  08.325221 02 18 54.97   -04 13 30.0   23.6g 505412    W84  C~16e5      
2013 09  08.327441 02 18 54.95   -04 13 30.1   22.7r 505412    W84  C~16e5      
2013 09  08.329794 02 18 54.95   -04 13 30.2   22.3i 505412    W84  C~16e5      
2013 09  08.333629 02 18 54.93   -04 13 30.5   22.0z 505412    W84  C~16e5      
2013 09  12.213467 02 18 43.26   -04 15 36.3   23.7g 505412    W84  C~16e5      
2013 09  12.215694 02 18 43.25   -04 15 36.5   22.7r 505412    W84  C~16e5      
2013 09  12.218050 02 18 43.24   -04 15 36.6   22.3i 505412    W84  C~16e5      
2013 09  12.221878 02 18 43.23   -04 15 36.7   21.8z 505412    W84  C~16e5      
2013 09  16.296385 02 18 29.74   -04 17 49.9   22.4r 505412    W84  C~16e5      
2013 09  16.298752 02 18 29.71   -04 17 50.1   22.3i 505412    W84  C~16e5      
2013 09  24.170359 02 18 00.40   -04 22 06.3   23.0r 505412    W84  C~16e5      
2013 09  24.172716 02 18 00.38   -04 22 06.3   21.8i 505412    W84  C~16e5      
2013 09  24.175360 02 18 00.37   -04 22 06.5   22.1z 505412    W84  C~16e5      
2013 09  24.176517 02 18 00.37   -04 22 06.5   22.1z 505412    W84  C~1769      
2013 09  24.178023 02 18 00.38   -04 22 06.6         505412    W84  C~16e5      
2013 09  28.260357 02 17 43.61   -04 24 17.3   24.0g 505412    W84  C~16e5      
2013 09  28.262580 02 17 43.61   -04 24 17.6   22.8r 505412    W84  C~16e5      
2013 09  28.264936 02 17 43.59   -04 24 17.6   22.4i 505412    W84  C~16e5      
2013 09  28.268738 02 17 43.58   -04 24 17.8   22.1z 505412    W84  C~16e5      
2013 10  10.137193 02 16 50.07   -04 30 20.6   23.2g 505412    W84  C~1769      
2013 10  10.139398 02 16 50.06   -04 30 20.8   22.6r 505412    W84  C~1769      
2013 10  10.141771 02 16 50.05   -04 30 20.8   22.1i 505412    W84  C~1769      
2013 10  10.145579 02 16 50.02   -04 30 21.0   21.8z 505412    W84  C~1769      
2013 10  14.130985 02 16 30.80   -04 32 14.2   22.3i 505412    W84  C~16e5      
2013 10  14.133629 02 16 30.77   -04 32 14.3   21.7z 505412    W84  C~16e5      
2013 10  26.077748 02 15 30.91   -04 37 17.8   23.7g 505412    W84  C~16e5      
2013 10  26.079976 02 15 30.91   -04 37 17.7   22.7r 505412    W84  C~16e5      
2013 10  26.082342 02 15 30.91   -04 37 17.6         505412    W84  C~16e5      
2013 10  26.084990 02 15 30.88   -04 37 18.0   22.1z 505412    W84  C~16e5      
2013 10  26.086148 02 15 30.88   -04 37 18.0   22.1z 505412    W84  C~1769      
2013 10  30.087959 02 15 10.46   -04 38 45.0   21.6i 505412    W84  C~16e5      
2013 10  30.090599 02 15 10.44   -04 38 45.3   21.7z 505412    W84  C~16e5      
2013 10  30.091756 02 15 10.44   -04 38 45.3   21.7z 505412    W84  C~1769      
2014 08  07.290188 02 24 51.63   -03 08 41.6         505412    W84  C~17Lb      
2014 08  07.336639 02 24 51.63   -03 08 42.4         505412    W84  C~17Lb      
2014 08  09.333684 02 24 51.84   -03 09 28.2         505412    W84  C~17Lb      
2014 08  09.433292 02 24 51.83   -03 09 30.2         505412    W84  C~17Lb      
2014 10  01.369086 02 22 47.35   -03 35 40.1         505412    W84  C~1C6X      
2014 10  01.369097 02 22 47.35   -03 35 40.1         505412    W84  C~1C6X      
2015 10  10.532327 02 27 22.637  -02 49 52.99  22.5r 505412    568  C~2SCO      
2015 10  10.585578 02 27 22.381  -02 49 54.46  22.4r 505412    568  C~2SCO      
2015 10  10.609385 02 27 22.270  -02 49 55.15  22.4r 505412    568  C~2SCO      
2015 10  10.611487 02 27 22.259  -02 49 55.23  22.4r 505412    568  C~2SCO      
2015 10  14.534124 02 27 03.614  -02 51 45.68  23.4g 505412    568  C~2SCO      
2015 10  14.587420 02 27 03.355  -02 51 47.17  23.3g 505412    568  C~2SCO      
2015 10  14.613294 02 27 03.225  -02 51 47.88  23.3g 505412    568  C~2SCO      
2015 11  22.124236 02 23 50.36   -03 04 04.7   22.1z 505412    W84  C~1h5k      
2015 12  05.180000 02 22 52.73   -03 04 58.7   22.3i 505412    W84  C~1h5k      
2015 12  05.181366 02 22 52.71   -03 04 58.7   23.0r 505412    W84  C~1h5k      
2016 09  23.294479 02 33 46.83   -01 51 23.6   22.1i 505412    W84  C~2NKE      
2016 10  27.257720 02 31 11.61   -02 07 04.3   22.2i 505412    W84  C~2NKE      
2016 11  11.118843 02 29 55.50   -02 11 48.2   21.9z 505412    W84  C~2NKE      
2016 11  27.107199 02 28 38.10   -02 14 36.3   22.8i 505412    W84  C~2NKE      
2016 12  05.183831 02 28 03.10   -02 14 58.9   22.1i 505412    W84  C~2NKE      

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    -0.17       0.00    -0.00
  2   0.0000      0.00     0.08       0.00     0.09
  3   0.0000      0.00     0.09       0.00     0.00
  4   0.0000      0.00    -0.08       0.00    -0.02
  5   0.0001      0.00     0.05       0.00    -0.08
  6   0.0564      0.00     0.01       0.00     0.20
  7   0.0564      0.00     0.08       0.00    -0.03
  8   0.0564      0.00    -0.14       0.00     0.04
  9   0.0564      0.00    -0.17       0.00     0.16
 10   0.0685      0.00     0.06       0.00    -0.19
 11   0.0685      0.00    -0.00       0.00    -0.03
 12   0.0685      0.00     0.05       0.00    -0.01
 13   0.0685      0.00     0.11       0.00    -0.08
 14   0.0814      0.00     0.16       0.00     0.09
 15   0.0814      0.00    -0.05       0.00     0.06
 16   0.0814      0.00     0.06       0.00     0.04
 17   0.0814      0.00    -0.07       0.00    -0.14
 18   0.0920      0.00     0.07       0.00     0.16
 19   0.0920      0.00     0.03       0.00     0.03
 20   0.0920      0.00    -0.01       0.00     0.01
 21   0.0921      0.00     0.03       0.00     0.03
 22   0.1032      0.00     0.27       0.00    -0.02
 23   0.1032      0.00    -0.06       0.00    -0.14
 24   0.1248      0.00     0.11       0.00    -0.00
 25   0.1248      0.00    -0.05       0.00     0.07
 26   0.1248      0.00    -0.04       0.00    -0.04
 27   0.1248      0.00     0.03       0.00    -0.01
 28   0.1248      0.00     0.28       0.00    -0.06
 29   0.1360      0.00    -0.07       0.00     0.15
 30   0.1360      0.00     0.08       0.00    -0.08
 31   0.1360      0.00    -0.07       0.00    -0.00
 32   0.1360      0.00     0.02       0.00    -0.08
 33   0.1685      0.00     0.08       0.00     0.12
 34   0.1685      0.00     0.09       0.00    -0.02
 35   0.1685      0.00     0.11       0.00     0.05
 36   0.1685      0.00    -0.07       0.00    -0.04
 37   0.1794      0.00     0.13       0.00     0.06
 38   0.1794      0.00    -0.12       0.00     0.03
 39   0.2121      0.00    -0.11       0.00    -0.05
 40   0.2121      0.00     0.07       0.00     0.10
 41   0.2121      0.00     0.25       0.00     0.25
 42   0.2121      0.00     0.00       0.00    -0.08
 43   0.2121      0.00     0.09       0.00    -0.06
 44   0.2231      0.00     0.19       0.00     0.20
 45   0.2231      0.00     0.10       0.00    -0.05
 46   0.2231      0.00     0.19       0.00    -0.02
 47   0.9930      0.00     0.01       0.00     0.21
 48   0.9931      0.00    -0.09       0.00     0.44
 49   0.9986      0.00     0.00       0.00    -0.12
 50   0.9989      0.00    -0.03       0.00     0.18
 51   1.1438      0.00     0.01       0.00     0.10
 52   1.1438      0.00     0.01       0.00     0.10
 53   2.1682      0.00    -0.07       0.00    -0.16
 54   2.1683      0.00    -0.11       0.00    -0.10
 55   2.1684      0.00    -0.08       0.00    -0.11
 56   2.1684      0.00    -0.09       0.00    -0.13
 57   2.1792      0.00    -0.10       0.00    -0.17
 58   2.1793      0.00    -0.06       0.00    -0.20
 59   2.1794      0.00    -0.11       0.00    -0.20
 60   2.2848      0.00     0.09       0.00    -0.11
 61   2.3205      0.00     0.09       0.00    -0.05
 62   2.3206      0.00    -0.12       0.00    -0.05
 63   3.1231      0.00    -0.03       0.00     0.01
 64   3.2160      0.00     0.13       0.00    -0.03
 65   3.2567      0.00     0.14       0.00     0.02
 66   3.3005      0.00     0.07       0.00    -0.04
 67   3.3226      0.00     0.12       0.00     0.04

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.

505412    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.285    40.285    40.285
ecceobj         0.040     0.040     0.040
incobj         20.589    20.589    20.589
qmin           36.899    36.924    37.162
qmax           43.487    43.228    43.025
amean          40.002    39.982    39.972
amin           39.611    39.621    39.614
amax           40.369    40.331    40.345
emean           0.051     0.048     0.043
emin            0.018     0.021     0.018
emax            0.078     0.074     0.067
imean          18.808    18.574    18.813
imin           17.940    17.687    17.926
imax           19.791    19.467    19.729
excite_mean     0.327     0.322     0.325
fracstop        1.000     1.000     1.000
cjmean          2.932     2.936     2.933

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       183.1     173.6     181.2
kozaiamp        179.9     180.0     180.0