Orbit Fit and Astrometric record for 13UY16

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: 13UY16    
# Created Sat Dec 16 02:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   45 observations of   45
# Arc:   4.08y
# First observation: 2013/08/02
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000027   0.021254   0.000002   0.000690   0.022882   0.000000
# Chi-squared of fit:    26.19 DOF:   84 RMS:  0.13
# Min/Max residuals:    -0.48    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.494238E-05  2.128760E-02  4.239108E-07  6.969622E-04  2.278803E-02  2.501251E-03
# Covariance matrix:
  1.4842E-13  1.1839E-14  6.9869E-16  1.0700E-15  1.1097E-13  5.3203E-13
  1.1839E-14  1.3958E-13 -6.8735E-16  4.6734E-15  8.1695E-14  1.8253E-12
  6.9869E-16 -6.8735E-16  4.9605E-14 -1.8764E-14  3.9474E-16 -9.9086E-15
  1.0700E-15  4.6734E-15 -1.8764E-14  2.0540E-14  3.0753E-15  7.1460E-14
  1.1097E-13  8.1695E-14  3.9474E-16  3.0753E-15  1.4506E-13  1.3140E-12
  5.3203E-13  1.8253E-12 -9.9086E-15  7.1460E-14  1.3140E-12  2.7990E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.490314   15.379227    0.923706   -0.011025   -0.424832  2456507.005448
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:           88.08274 +/-     0.047
Argument of Peri:      222.40684 +/-     0.038
Long of Asc Node:       52.93858 +/-     0.006
Inclination:             2.35667 +/-     0.000
Eccentricity:         0.09373912 +/-    0.0002
Semi-Major Axis:     44.06797351 +/-    0.0030
Time of Perihelion: 2430356.5405 +/-      13.8
Perihelion:          39.93708067 +/-    0.0109
Aphelion:            48.19886635 +/-    0.0110
Period (y)              292.5451 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.95150452 +/-    0.0007
Ecliptic Y           10.85925595 +/-    0.0002
Ecliptic Z           -1.14123598 +/-    0.0000
Ecliptic XDOT        -0.00039276 +/-    0.0000
Ecliptic YDOT         0.00254542 +/-    0.0000
Ecliptic ZDOT         0.00007603 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.31768947 +/-    0.0007
Geocenter to KBO     43.88268075 +/-    0.0007
# Hcoef:  7.70

The following table shows the complete astrometric record for 13UY16. 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 (13UY16) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.50467  00 58 57.608  +04 40 49.03  24.1r 13UY16    568  C~2NKX      
2013 08  02.54741  00 58 57.548  +04 40 48.57  24.0r 13UY16    568  C~2NKX      
2013 08  11.50367  00 58 42.696  +04 39 02.37  23.8r 13UY16    568  C~2NKX      
2013 08  30.42008  00 57 53.224  +04 33 30.32  24.1r 13UY16    568  C~2NKX      
2013 08  31.42413  00 57 49.969  +04 33 09.35  24.2r 13UY16    568  C~2NKX      
2013 08  31.46730  00 57 49.831  +04 33 08.46  24.0r 13UY16    568  C~2NKX      
2013 09  04.40430  00 57 36.633  +04 31 42.62        13UY16    568  C~2NKX      
2013 09  04.44707  00 57 36.480  +04 31 41.70  24.2r 13UY16    568  C~2NKX      
2013 10  05.37122  00 55 33.017  +04 18 42.29  23.5r 13UY16    568  C~2NKX      
2013 10  05.37632  00 55 32.981  +04 18 42.07  23.7r 13UY16    568  C~2NKX      
2013 10  06.37972  00 55 28.658  +04 18 15.33  24.3r 13UY16    568  C~2NKX      
2013 10  06.44410  00 55 28.368  +04 18 13.64  23.7r 13UY16    568  C~2NKX      
2013 10  09.50414  00 55 15.167  +04 16 52.44  23.6r 13UY16    568  C~2NKX      
2013 10  09.50879  00 55 15.141  +04 16 52.37  23.3r 13UY16    568  C~2NKX      
2013 10  31.22708  00 53 44.773  +04 07 46.38  23.8r 13UY16    568  C~2NKX      
2013 10  31.27019  00 53 44.594  +04 07 45.47  23.8r 13UY16    568  C~2NKX      
2013 10  31.31297  00 53 44.426  +04 07 44.40  23.7r 13UY16    568  C~2NKX      
2013 11  01.25343  00 53 40.798  +04 07 22.96  24.2r 13UY16    568  C~2NKX      
2013 11  01.37273  00 53 40.317  +04 07 20.33  24.6r 13UY16    568  C~2NKX      
2013 11  02.20394  00 53 37.172  +04 07 01.35  23.8r 13UY16    568  C~2NKX      
2013 11  02.22554  00 53 37.090  +04 07 00.79  23.5r 13UY16    568  C~2NKX      
2013 11  02.24797  00 53 36.982  +04 07 00.33  23.8r 13UY16    568  C~2NKX      
2013 11  02.26953  00 53 36.879  +04 07 00.16  23.8r 13UY16    568  C~2NKX      
2013 11  02.29201  00 53 36.796  +04 06 59.65  24.7r 13UY16    568  C~2NKX      
2013 11  05.35173  00 53 25.296  +04 05 51.81  23.6r 13UY16    568  C~2NKX      
2013 11  05.37780  00 53 25.202  +04 05 51.37  24.3r 13UY16    568  C~2NKX      
2013 11  29.21607  00 52 12.628  +03 59 01.08  24.7r 13UY16    568  C~2NKX      
2013 12  04.24324  00 52 02.025  +03 58 06.63  24.3r 13UY16    568  C~2NKX      
2013 12  04.29069  00 52 01.934  +03 58 06.31  24.2r 13UY16    568  C~2NKX      
2013 12  05.31529  00 52 00.027  +03 57 56.67  23.9r 13UY16    568  C~2NKX      
2014 07  27.56807  01 03 30.581  +05 11 51.03  24.5r 13UY16    568  C~2NKX      
2014 08  28.45040  01 02 29.145  +05 04 46.66  24.5r 13UY16    568  C~2NKX      
2014 10  23.37571  00 58 47.568  +04 41 47.09  24.0r 13UY16    568  C~2NKX      
2014 10  27.41437  00 58 30.947  +04 40 07.75  23.9r 13UY16    568  C~2NKX      
2014 11  24.27889  00 56 53.865  +04 30 47.69  23.9r 13UY16    568  C~2NKX      
2014 12  17.27056  00 56 10.275  +04 27 08.73  23.9r 13UY16    568  C~2NKX      
2015 01  17.27935  00 56 20.838  +04 29 34.55  24.1r 13UY16    568  C~2NKX      
2015 08  20.53131  01 07 18.954  +05 37 23.91  23.9r 13UY16    568  C~2NKX      
2015 12  07.37370  01 00 50.906  +04 58 28.61  24.5w 13UY16    568  C~2NKX      
2017 01  31.21678  01 05 34.336  +05 32 32.41  24.7w 13UY16    568  C~2NKX      
2017 01  31.22433  01 05 34.377  +05 32 32.62  24.6w 13UY16    568  C~2NKX      
2017 07  24.59587  01 16 44.436  +06 40 48.45  24.2w 13UY16    568  C~2NKX      
2017 08  25.52748  01 15 57.505  +06 35 23.64  24.1w 13UY16    568  C~2NKX      
2017 08  30.46920  01 15 43.772  +06 33 55.68  24.4w 13UY16    568  C~2NKX      
2017 08  30.52183  01 15 43.639  +06 33 54.65  24.8w 13UY16    568  C~2NKX      

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    -0.06      -0.08    -0.02
  3   0.0246   -246.82    -0.04     -12.64     0.05
  4   0.0764  -1057.33     0.16     -34.29    -0.29
  5   0.0792  -1110.33    -0.08     -34.90    -0.02
  6   0.0793  -1112.57     0.00     -34.93    -0.03
  7   0.0901  -1327.77    -0.07     -38.12    -0.03
  8   0.0902  -1330.23    -0.09     -38.09     0.01
  9   0.1749  -3334.69     0.34     -45.29     0.02
 10   0.1749  -3335.27     0.12     -45.29     0.02
 11   0.1776  -3405.26     0.11     -45.00    -0.03
 12   0.1778  -3409.92     0.02     -44.89     0.03
 13   0.1862  -3623.48     0.01     -43.59     0.03
 14   0.1862  -3623.86    -0.05     -43.50     0.12
 15   0.2456  -5082.37    -0.02     -25.02    -0.04
 16   0.2458  -5085.19    -0.11     -24.83     0.08
 17   0.2459  -5087.92    -0.12     -24.84    -0.00
 18   0.2485  -5146.31     0.08     -23.64     0.03
 19   0.2488  -5153.96    -0.06     -23.29     0.18
 20   0.2511  -5204.73     0.32     -22.61    -0.16
 21   0.2511  -5206.08     0.32     -22.65    -0.24
 22   0.2512  -5207.75     0.05     -22.45    -0.07
 23   0.2512  -5209.23    -0.10     -22.01     0.33
 24   0.2513  -5210.58    -0.04     -22.00     0.30
 25   0.2597  -5395.61    -0.27     -18.07    -0.00
 26   0.2597  -5397.08    -0.16     -17.93     0.09
 27   0.3250  -6558.14    -0.23      23.63    -0.48
 28   0.3388  -6725.68    -0.13      34.81    -0.04
 29   0.3389  -6727.07    -0.03      35.04     0.07
 30   0.3417  -6757.14     0.20      37.20    -0.04
 31   0.9831   4482.35     0.05     152.59     0.16
 32   1.0704   3471.57    -0.09     112.56    -0.04
 33   1.2235   -116.19    -0.04     111.35     0.11
 34   1.2345   -383.77     0.04     115.31    -0.07
 35   1.3108  -1939.10     0.00     157.65    -0.10
 36   1.3738  -2625.06     0.11     206.98     0.12
 37   1.4587  -2423.05    -0.06     280.60     0.07
 38   2.0480   8223.31     0.02     264.46    -0.07
 39   2.3460   1970.73    -0.11     327.01     0.05
 40   3.4982   6666.60    -0.12     592.05     0.02
 41   3.4982   6667.24     0.20     592.01    -0.04
 42   3.9756  17507.17    -0.12     582.11    -0.06
 43   4.0630  16731.72     0.02     545.41     0.12
 44   4.0766  16507.56    -0.13     541.33     0.05
 45   4.0767  16505.32     0.20     541.12    -0.14

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.

13UY16    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.310    44.320    44.301
ecceobj         0.096     0.096     0.095
incobj          2.354     2.354     2.354
qmin           39.300    39.309    39.316
qmax           49.117    49.143    49.077
amean          44.065    44.075    44.056
amin           43.713    43.718    43.707
amax           44.447    44.464    44.440
emean           0.088     0.088     0.087
emin            0.071     0.071     0.071
emax            0.105     0.105     0.105
imean           1.309     1.310     1.307
imin            0.443     0.446     0.440
imax            2.009     2.010     2.009
excite_mean     0.091     0.091     0.091
fracstop        1.000     1.000     1.000
cjmean          3.092     3.092     3.092

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       192.5     192.4     192.4
kozaiamp        180.0     180.0     180.0