Orbit Fit and Astrometric record for 13UB17

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: 13UB17    
# Created Sat Dec 16 02:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   32 observations of   32
# Arc:   4.05y
# First observation: 2013/08/11
#  Last observation: 2017/08/30
Preliminary a, adot, b, bdot, g, gdot:
  -0.000121   0.017120   0.000056   0.011056   0.020801   0.000000
# Chi-squared of fit:     4.82 DOF:   58 RMS:  0.07
# Min/Max residuals:    -0.20    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.322712E-05  1.726353E-02  7.586791E-06  1.119742E-02  2.093785E-02  4.071143E-03
# Covariance matrix:
  2.2962E-13 -5.0522E-14 -7.6545E-16  3.1090E-15  1.5210E-13  7.4792E-14
 -5.0522E-14  2.0386E-13 -4.2657E-14  1.2564E-13  6.4387E-14  2.8037E-12
 -7.6545E-16 -4.2657E-14  8.2674E-14 -5.9584E-14 -2.2326E-14 -7.0566E-13
  3.1090E-15  1.2564E-13 -5.9584E-14  1.2319E-13  6.6642E-14  2.0808E-12
  1.5210E-13  6.4387E-14 -2.2326E-14  6.6642E-14  1.9022E-13  1.4928E-12
  7.4792E-14  2.8037E-12 -7.0566E-13  2.0808E-12  1.4928E-12  4.6449E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.632567   15.422068    0.848714   -0.006115   -0.557033  2456516.008328
# Heliocentric elements and errors
Epoch:              2456510.5000  =  2013/08/06
Mean Anomaly:           27.23232 +/-     0.021
Argument of Peri:      310.29611 +/-     0.048
Long of Asc Node:       15.38687 +/-     0.000
Inclination:            32.85104 +/-     0.001
Eccentricity:         0.28618329 +/-    0.0003
Semi-Major Axis:     62.60753474 +/-    0.0152
Time of Perihelion: 2442823.1140 +/-       9.3
Perihelion:          44.69030427 +/-    0.0228
Aphelion:            80.52476520 +/-    0.0281
Period (y)              495.3910 +/-      0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           46.80031528 +/-    0.0010
Ecliptic Y           12.03312127 +/-    0.0002
Ecliptic Z           -0.52688161 +/-    0.0000
Ecliptic XDOT        -0.00007779 +/-    0.0000
Ecliptic YDOT         0.00232106 +/-    0.0000
Ecliptic ZDOT         0.00145836 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   48.32538797 +/-    0.0009
Geocenter to KBO     47.76039595 +/-    0.0010
# Hcoef:  7.04

The following table shows the complete astrometric record for 13UB17. 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 (13UB17) followed by the observatory code and reference code for the source of the astrometry.

2013 08  11.50755  00 57 47.561  +05 29 18.25  23.7r 13UB17    568  C~2NKX      
2013 08  30.42396  00 56 57.483  +05 26 03.70  24.7r 13UB17    568  C~2NKX      
2013 08  31.42817  00 56 54.261  +05 25 50.21  23.8r 13UB17    568  C~2NKX      
2013 08  31.47118  00 56 54.118  +05 25 49.71  23.9r 13UB17    568  C~2NKX      
2013 10  06.38359  00 54 36.059  +05 15 25.47  23.5r 13UB17    568  C~2NKX      
2013 10  06.44798  00 54 35.785  +05 15 24.34  23.8r 13UB17    568  C~2NKX      
2013 10  06.45762  00 54 35.745  +05 15 24.02  23.4r 13UB17    568  C~2NKX      
2013 10  06.46264  00 54 35.731  +05 15 23.93  23.7r 13UB17    568  C~2NKX      
2013 10  09.51275  00 54 22.943  +05 14 25.00  23.4r 13UB17    568  C~2NKX      
2013 10  31.23096  00 52 55.127  +05 07 48.28  24.0r 13UB17    568  C~2NKX      
2013 10  31.27407  00 52 54.964  +05 07 47.51  23.7r 13UB17    568  C~2NKX      
2013 10  31.31685  00 52 54.799  +05 07 46.80  23.6r 13UB17    568  C~2NKX      
2013 11  01.25731  00 52 51.247  +05 07 31.11  23.9r 13UB17    568  C~2NKX      
2013 11  01.37789  00 52 50.777  +05 07 29.32  24.3r 13UB17    568  C~2NKX      
2013 11  05.38291  00 52 36.038  +05 06 25.52  23.4r 13UB17    568  C~2NKX      
2013 11  29.22005  00 51 24.224  +05 01 48.49  23.7r 13UB17    568  C~2NKX      
2013 12  04.24712  00 51 13.411  +05 01 17.55  23.4r 13UB17    568  C~2NKX      
2013 12  04.29457  00 51 13.318  +05 01 17.36  23.6r 13UB17    568  C~2NKX      
2013 12  06.21068  00 51 09.669  +05 01 08.37  23.8r 13UB17    568  C~2NKX      
2014 07  24.58857  01 00 52.984  +06 27 59.61  24.3r 13UB17    568  C~2NKX      
2014 08  22.54836  01 00 02.106  +06 26 00.81  23.5r 13UB17    568  C~2NKX      
2014 08  28.40993  00 59 45.346  +06 24 56.84  24.1r 13UB17    568  C~2NKX      
2014 10  23.37180  00 56 08.577  +06 08 52.39  23.4r 13UB17    568  C~2NKX      
2014 10  27.41049  00 55 52.479  +06 07 39.38  23.3r 13UB17    568  C~2NKX      
2014 11  19.20228  00 54 32.387  +06 01 51.95  23.2r 13UB17    568  C~2NKX      
2014 11  19.26959  00 54 32.183  +06 01 51.23  24.1r 13UB17    568  C~2NKX      
2014 11  25.21887  00 54 15.452  +06 00 45.93  23.9r 13UB17    568  C~2NKX      
2015 01  17.27427  00 53 38.128  +06 02 33.90  24.0r 13UB17    568  C~2NKX      
2017 07  24.57704  01 08 45.341  +09 18 05.66  24.0w 13UB17    568  C~2NKX      
2017 08  25.54221  01 07 50.310  +09 17 13.02  23.7w 13UB17    568  C~2NKX      
2017 08  30.48332  01 07 36.034  +09 16 27.81  23.8w 13UB17    568  C~2NKX      
2017 08  30.53584  01 07 35.878  +09 16 27.35  24.3w 13UB17    568  C~2NKY      

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     0.18
  2   0.0518   -764.98     0.05     108.65    -0.20
  3   0.0545   -814.58    -0.02     114.75    -0.00
  4   0.0547   -816.74    -0.01     115.12     0.09
  5   0.1530  -2959.98    -0.03     335.15    -0.02
  6   0.1532  -2964.20     0.01     335.69     0.09
  7   0.1532  -2964.87    -0.02     335.63    -0.04
  8   0.1532  -2965.10     0.08     335.63    -0.08
  9   0.1615  -3164.09    -0.18     355.10    -0.09
 10   0.2210  -4527.77     0.01     496.69     0.12
 11   0.2211  -4530.32     0.03     496.92     0.05
 12   0.2212  -4532.87     0.03     497.22     0.05
 13   0.2238  -4587.90    -0.08     503.30    -0.08
 14   0.2241  -4595.07    -0.12     504.37     0.14
 15   0.2351  -4822.92     0.02     530.80    -0.06
 16   0.3004  -5920.21     0.05     691.13    -0.01
 17   0.3141  -6081.29     0.03     725.26     0.02
 18   0.3143  -6082.64     0.11     725.63     0.04
 19   0.3195  -6136.44    -0.01     738.48    -0.07
 20   0.9503   3908.33     0.05    2187.02    -0.01
 21   1.0295   3162.28     0.08    2368.59    -0.01
 22   1.0456   2906.99     0.01    2405.54    -0.10
 23   1.1988   -447.58    -0.01    2760.25     0.04
 24   1.2099   -697.27     0.02    2785.57     0.01
 25   1.2723  -1933.55    -0.03    2926.64    -0.09
 26   1.2724  -1936.64     0.03    2927.15    -0.02
 27   1.2887  -2192.11    -0.02    2963.44    -0.08
 28   1.4340  -2663.93    -0.03    3278.49     0.08
 29   3.9509  14322.64    -0.03    8959.65    -0.03
 30   4.0384  13545.16    -0.04    9220.27     0.01
 31   4.0520  13331.44    -0.04    9258.62     0.02
 32   4.0521  13329.12     0.08    9259.07     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.

13UB17    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        63.076    63.123    63.029
ecceobj         0.292     0.293     0.291
incobj         32.769    32.769    32.770
qmin           40.712    42.286    41.571
qmax           85.564    83.797    84.762
amean          62.630    62.630    62.629
amin           61.938    61.947    61.877
amax           63.470    63.444    63.527
emean           0.294     0.258     0.292
emin            0.175     0.159     0.244
emax            0.349     0.323     0.335
imean          32.672    33.505    32.784
imin           31.120    32.050    31.743
imax           35.342    35.497    33.978
excite_mean     0.616     0.612     0.616
fracstop        1.000     1.000     1.000
cjmean          2.799     2.800     2.800

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       254.6     250.4     280.4
kozaiamp         59.2      54.2     180.0