Orbit Fit and Astrometric record for 13UJ17

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: 13UJ17    
# Created Fri Dec 15 02:37:54 2017
# Orbit generated from Bernstein formalism
# Fitting   60 observations of   60
# Arc:   2.35y
# First observation: 2013/08/02
#  Last observation: 2015/12/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000307   0.037620  -0.000028   0.004220   0.031330   0.000000
# Chi-squared of fit:    17.36 DOF:  114 RMS:  0.10
# Min/Max residuals:    -0.20    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.895684E-05  3.693421E-02  2.058021E-06  4.138377E-03  3.111411E-02 -1.067486E-03
# Covariance matrix:
  1.0974E-13 -2.4146E-14  6.4467E-16  7.6210E-16  6.1577E-14  8.2022E-14
 -2.4146E-14  2.4639E-13 -7.5990E-15  3.3347E-14  1.2228E-13  3.7037E-12
  6.4467E-16 -7.5990E-15  6.3324E-14 -3.8235E-14 -3.0901E-15 -1.3657E-13
  7.6210E-16  3.3347E-14 -3.8235E-14  4.0253E-14  1.7793E-14  5.8810E-13
  6.1577E-14  1.2228E-13 -3.0901E-15  1.7793E-14  1.3453E-13  1.9731E-12
  8.2022E-14  3.7037E-12 -1.3657E-13  5.8810E-13  1.9731E-12  6.5325E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -2.578432   16.549834    0.932057   -0.018250   -0.405909  2456507.024878
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:          345.32374 +/-     0.049
Argument of Peri:      359.67657 +/-     0.074
Long of Asc Node:       36.74332 +/-     0.001
Inclination:             6.81613 +/-     0.000
Eccentricity:         0.18773848 +/-    0.0001
Semi-Major Axis:     39.63824272 +/-    0.0021
Time of Perihelion: 2460216.5613 +/-      12.4
Perihelion:          32.19661944 +/-    0.0037
Aphelion:            47.07986599 +/-    0.0041
Period (y)              249.5628 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           31.43185324 +/-    0.0004
Ecliptic Y            8.37110549 +/-    0.0001
Ecliptic Z           -1.44576066 +/-    0.0000
Ecliptic XDOT        -0.00100623 +/-    0.0000
Ecliptic YDOT         0.00309246 +/-    0.0000
Ecliptic ZDOT         0.00036815 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   32.55959197 +/-    0.0004
Geocenter to KBO     32.13976104 +/-    0.0004
# Hcoef:  9.11

The following table shows the complete astrometric record for 13UJ17. 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 (13UJ17) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.52410  01 04 58.130  +04 07 26.78  24.6r 13UJ17    568  C~2NKY      
2013 08  02.56680  01 04 58.071  +04 07 26.31  24.5r 13UJ17    568  C~2NKY      
2013 08  30.43961  01 03 40.472  +03 58 39.72  24.4r 13UJ17    568  C~2NKY      
2013 08  31.44379  01 03 36.386  +03 58 13.72  23.1r 13UJ17    568  C~2NKY      
2013 08  31.48677  01 03 36.187  +03 58 12.39  24.7r 13UJ17    568  C~2NKY      
2013 08  31.49523  01 03 36.159  +03 58 12.14  24.2r 13UJ17    568  C~2NKY      
2013 08  31.50005  01 03 36.155  +03 58 12.35  24.0r 13UJ17    568  C~2NKY      
2013 08  31.50475  01 03 36.119  +03 58 11.96  24.0r 13UJ17    568  C~2NKY      
2013 09  04.42370  01 03 19.440  +03 56 25.99  24.5r 13UJ17    568  C~2NKY      
2013 10  06.39317  01 00 32.793  +03 39 39.99  24.1r 13UJ17    568  C~2NKY      
2013 10  06.45289  01 00 32.447  +03 39 38.33  23.9r 13UJ17    568  C~2NKY      
2013 10  06.46664  01 00 32.385  +03 39 37.71  23.5r 13UJ17    568  C~2NKY      
2013 10  06.47596  01 00 32.315  +03 39 37.48  24.2r 13UJ17    568  C~2NKY      
2013 10  09.51669  01 00 14.998  +03 37 57.36  23.7r 13UJ17    568  C~2NKY      
2013 10  31.23488  00 58 15.114  +03 26 50.33  23.8r 13UJ17    568  C~2NKY      
2013 10  31.27795  00 58 14.878  +03 26 48.99  24.5r 13UJ17    568  C~2NKY      
2013 10  31.32073  00 58 14.675  +03 26 47.87  23.9r 13UJ17    568  C~2NKY      
2013 11  01.26121  00 58 09.818  +03 26 22.19  23.9r 13UJ17    568  C~2NKY      
2013 11  01.38296  00 58 09.170  +03 26 18.81  24.0r 13UJ17    568  C~2NKY      
2013 11  05.38795  00 57 49.097  +03 24 33.31  23.9r 13UJ17    568  C~2NKY      
2013 11  29.22393  00 56 12.807  +03 16 54.76  24.8r 13UJ17    568  C~2NKY      
2013 12  04.25107  00 55 58.886  +03 16 02.20  24.0r 13UJ17    568  C~2NKY      
2013 12  04.29848  00 55 58.760  +03 16 01.85  23.2r 13UJ17    568  C~2NKY      
2013 12  05.24921  00 55 56.427  +03 15 53.85  24.1r 13UJ17    568  C~2NKY      
2014 06  27.59782  01 11 58.437  +05 07 18.62  24.2r 13UJ17    568  C~2NKY      
2014 06  28.60286  01 12 01.215  +05 07 33.36  24.1r 13UJ17    568  C~2NKZ      
2014 07  24.55698  01 12 34.329  +05 10 00.21  24.2r 13UJ17    568  C~2NKZ      
2014 07  27.58768  01 12 33.301  +05 09 47.70  23.9r 13UJ17    568  C~2NKZ      
2014 08  22.55650  01 11 44.296  +05 04 05.98  24.0r 13UJ17    568  C~2NKZ      
2014 08  22.56426  01 11 44.271  +05 04 06.07  24.3r 13UJ17    568  C~2NKZ      
2014 08  28.41844  01 11 24.090  +05 01 57.13  23.9r 13UJ17    568  C~2NKZ      
2014 08  28.42620  01 11 24.072  +05 01 56.82  23.9r 13UJ17    568  C~2NKZ      
2014 10  23.36016  01 06 35.187  +04 33 39.98  24.4r 13UJ17    568  C~2NKZ      
2014 10  23.36792  01 06 35.144  +04 33 39.87  24.5r 13UJ17    568  C~2NKZ      
2014 10  26.45694  01 06 18.041  +04 32 06.38  24.2r 13UJ17    568  C~2NKZ      
2014 10  27.39884  01 06 12.878  +04 31 38.08  24.0r 13UJ17    568  C~2NKZ      
2014 10  27.40661  01 06 12.836  +04 31 37.84  24.0r 13UJ17    568  C~2NKZ      
2014 11  24.23611  01 04 01.909  +04 20 31.30  24.3r 13UJ17    568  C~2NKZ      
2014 11  24.24000  01 04 01.892  +04 20 31.22  24.1r 13UJ17    568  C~2NKZ      
2014 11  25.23226  01 03 58.264  +04 20 14.70  24.8r 13UJ17    568  C~2NKZ      
2014 11  25.23617  01 03 58.265  +04 20 14.62  24.2r 13UJ17    568  C~2NKZ      
2014 12  17.25877  01 03 02.574  +04 16 55.59  23.4r 13UJ17    568  C~2NKZ      
2015 01  17.24366  01 03 17.158  +04 22 06.01  24.0r 13UJ17    568  C~2NKZ      
2015 01  17.29797  01 03 17.284  +04 22 07.16  24.1r 13UJ17    568  C~2NKZ      
2015 08  20.51066  01 19 27.076  +06 06 46.58  23.8r 13UJ17    568  C~2NKZ      
2015 10  15.30155  01 15 02.229  +05 40 51.36  23.7r 13UJ17    568  C~2NKZ      
2015 10  15.30564  01 15 02.216  +05 40 51.18  23.8r 13UJ17    568  C~2NKZ      
2015 10  15.31052  01 15 02.185  +05 40 51.06  24.4g 13UJ17    568  C~2NKZ      
2015 10  15.31463  01 15 02.161  +05 40 50.84  24.3g 13UJ17    568  C~2NKZ      
2015 10  15.31874  01 15 02.144  +05 40 50.81  24.5g 13UJ17    568  C~2NKZ      
2015 10  15.32284  01 15 02.110  +05 40 50.64  24.4g 13UJ17    568  C~2NKZ      
2015 10  15.32694  01 15 02.092  +05 40 50.59  24.2g 13UJ17    568  C~2NKZ      
2015 10  15.33109  01 15 02.064  +05 40 50.36  24.3g 13UJ17    568  C~2NKZ      
2015 10  15.33519  01 15 02.032  +05 40 50.35  24.4g 13UJ17    568  C~2NKZ      
2015 10  15.33938  01 15 02.016  +05 40 50.12  24.4g 13UJ17    568  C~2NKZ      
2015 10  15.34352  01 15 01.996  +05 40 49.99  24.5g 13UJ17    568  C~2NKZ      
2015 10  15.34761  01 15 01.970  +05 40 49.89  24.3g 13UJ17    568  C~2NKZ      
2015 10  15.35250  01 15 01.940  +05 40 49.72  23.7r 13UJ17    568  C~2NKZ      
2015 10  15.35660  01 15 01.916  +05 40 49.57  23.8r 13UJ17    568  C~2NKZ      
2015 12  07.37779  01 10 54.219  +05 19 49.85  24.6w 13UJ17    568  C~2NKZ      

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    -0.04       0.00     0.01
  2   0.0001     -1.00     0.03      -0.10    -0.02
  3   0.0764  -1275.21     0.07     -42.57     0.02
  4   0.0792  -1341.66     0.15     -43.19     0.12
  5   0.0793  -1344.92    -0.18     -43.28     0.04
  6   0.0793  -1345.40    -0.09     -43.35    -0.03
  7   0.0793  -1345.37     0.27     -43.13     0.18
  8   0.0793  -1346.02    -0.06     -43.29     0.03
  9   0.0901  -1617.18     0.04     -45.67    -0.11
 10   0.1776  -4307.08    -0.20     -19.30    -0.10
 11   0.1778  -4312.50    -0.07     -18.85     0.18
 12   0.1778  -4313.60     0.11     -19.06    -0.07
 13   0.1778  -4314.66    -0.08     -18.87     0.09
 14   0.1862  -4592.59    -0.07     -11.91     0.01
 15   0.2456  -6507.37     0.04      61.08    -0.03
 16   0.2457  -6511.15    -0.15      61.20    -0.12
 17   0.2458  -6514.39     0.19      61.34    -0.19
 18   0.2484  -6591.47    -0.01      65.56    -0.00
 19   0.2488  -6601.74    -0.19      66.17    -0.00
 20   0.2597  -6920.11     0.16      84.23    -0.09
 21   0.3250  -8429.58     0.02     215.25     0.06
 22   0.3387  -8642.59     0.05     246.94    -0.08
 23   0.3389  -8644.47     0.05     247.34    -0.01
 24   0.3415  -8679.86     0.00     253.40    -0.07
 25   0.9010   7181.67    -0.05     925.62     0.07
 26   0.9037   7225.72     0.07     923.48    -0.10
 27   0.9748   7739.80     0.07     871.39     0.02
 28   0.9831   7720.81     0.08     865.64     0.01
 29   1.0542   6912.71    -0.12     827.65    -0.05
 30   1.0542   6912.40    -0.02     827.88     0.18
 31   1.0702   6584.13    -0.06     823.22     0.07
 32   1.0702   6583.76     0.05     823.04    -0.12
 33   1.2234   1942.66    -0.06     899.29     0.07
 34   1.2234   1942.02     0.00     899.43     0.19
 35   1.2318   1669.94     0.17     910.67     0.16
 36   1.2344   1587.77    -0.13     914.00    -0.04
 37   1.2344   1587.10    -0.12     914.02    -0.05
 38   1.3106   -477.07    -0.02    1046.52     0.01
 39   1.3107   -477.33    -0.05    1046.55     0.00
 40   1.3134   -533.79     0.02    1052.04    -0.08
 41   1.3134   -533.81     0.23    1051.96    -0.19
 42   1.3737  -1379.60     0.04    1186.91     0.30
 43   1.4585  -1059.23    -0.11    1390.18    -0.06
 44   1.4587  -1057.05    -0.04    1390.52    -0.09
 45   2.0479  14753.60     0.02    1695.03    -0.04
 46   2.2006  10491.06    -0.11    1747.74     0.06
 47   2.2006  10490.81     0.02    1747.65    -0.04
 48   2.2006  10490.34    -0.00    1747.71     0.00
 49   2.2007  10489.92    -0.04    1747.64    -0.08
 50   2.2007  10489.68     0.10    1747.71    -0.02
 51   2.2007  10489.14    -0.05    1747.75    -0.00
 52   2.2007  10488.87     0.06    1747.80     0.04
 53   2.2007  10488.40    -0.03    1747.75    -0.03
 54   2.2007  10487.95    -0.09    1747.92     0.13
 55   2.2007  10487.64    -0.01    1747.80    -0.01
 56   2.2007  10487.32     0.05    1747.79    -0.03
 57   2.2007  10486.92     0.03    1747.84     0.01
 58   2.2008  10486.44     0.01    1747.86     0.00
 59   2.2008  10486.05     0.00    1747.85    -0.01
 60   2.3459   6579.45     0.07    1985.69    -0.07

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.

13UJ17    quality flag:3

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

axisobj        39.841    39.846    39.836
ecceobj         0.191     0.191     0.191
incobj          6.807     6.807     6.807
qmin           31.811    31.795    31.797
qmax           47.899    47.794    47.895
amean          39.457    39.458    39.457
amin           38.950    38.912    38.941
amax           40.021    40.039    40.012
emean           0.178     0.176     0.178
emin            0.162     0.155     0.160
emax            0.197     0.195     0.197
imean           5.798     5.736     5.839
imin            5.165     4.823     5.216
imax            6.533     6.868     6.530
excite_mean     0.205     0.203     0.205
fracstop        1.000     1.000     1.000
cjmean          3.004     3.005     3.004

libcent 0       179.8     179.9     179.6
libamp  0       114.9     129.8     114.2
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       201.7     199.1     198.8
kozaiamp        179.9     180.0     180.0