Orbit Fit and Astrometric record for 13UQ17

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: 13UQ17    
# Created Fri Dec 15 02:37:54 2017
# Orbit generated from Bernstein formalism
# Fitting   38 observations of   38
# Arc:   3.49y
# First observation: 2013/08/02
#  Last observation: 2017/01/28
Preliminary a, adot, b, bdot, g, gdot:
  -0.000027   0.029165   0.000066   0.005814   0.028373   0.000000
# Chi-squared of fit:    21.25 DOF:   70 RMS:  0.13
# Min/Max residuals:    -0.32    0.33
# Exact a, adot, b, bdot, g, gdot:
  1.636460E-05  2.928835E-02  3.553116E-06  5.926398E-03  2.829439E-02  3.428702E-03
# Covariance matrix:
  1.2243E-13 -4.8085E-14  3.5670E-15 -9.5482E-15  5.5158E-14 -5.3723E-13
 -4.8085E-14  2.3387E-13 -2.3030E-14  6.8797E-14  9.4022E-14  3.9415E-12
  3.5670E-15 -2.3030E-14  7.5859E-14 -5.0342E-14 -8.5170E-15 -5.1440E-13
 -9.5482E-15  6.8797E-14 -5.0342E-14  7.6317E-14  2.6757E-14  1.5278E-12
  5.5158E-14  9.4022E-14 -8.5170E-15  2.6757E-14  1.1754E-13  1.5446E-12
 -5.3723E-13  3.9415E-12 -5.1440E-13  1.5278E-12  1.5446E-12  8.7452E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.106096   16.875609    0.934380   -0.007711   -0.400878  2456507.020968
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:           69.65452 +/-     0.020
Argument of Peri:      274.81723 +/-     0.026
Long of Asc Node:       20.79866 +/-     0.000
Inclination:            11.42790 +/-     0.000
Eccentricity:         0.08966639 +/-    0.0003
Semi-Major Axis:     36.62644022 +/-    0.0033
Time of Perihelion: 2440835.2514 +/-       3.9
Perihelion:          33.34227960 +/-    0.0120
Aphelion:            39.91060083 +/-    0.0121
Period (y)              221.6666 +/-      0.03
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           34.46915107 +/-    0.0004
Ecliptic Y            9.48320488 +/-    0.0001
Ecliptic Z           -0.68208028 +/-    0.0000
Ecliptic XDOT        -0.00050091 +/-    0.0000
Ecliptic YDOT         0.00281067 +/-    0.0000
Ecliptic ZDOT         0.00056709 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.75638103 +/-    0.0004
Geocenter to KBO     35.34269396 +/-    0.0004
# Hcoef:  8.84

The following table shows the complete astrometric record for 13UQ17. 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 (13UQ17) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.52019  01 03 54.994  +05 36 32.61  24.8r 13UQ17    568  C~2NKa      
2013 08  02.56292  01 03 54.922  +05 36 32.36  24.0r 13UQ17    568  C~2NKa      
2013 08  30.43573  01 02 38.526  +05 29 35.83  24.2r 13UQ17    568  C~2NKa      
2013 08  31.43992  01 02 34.609  +05 29 14.02  24.7r 13UQ17    568  C~2NKa      
2013 08  31.48289  01 02 34.438  +05 29 13.04  24.2r 13UQ17    568  C~2NKa      
2013 09  04.41982  01 02 18.403  +05 27 43.62  24.6r 13UQ17    568  C~2NKa      
2013 09  04.46259  01 02 18.229  +05 27 42.33  24.2r 13UQ17    568  C~2NKa      
2013 10  06.40113  00 59 40.719  +05 13 02.20  24.2r 13UQ17    568  C~2NKa      
2013 10  06.48380  00 59 40.277  +05 12 59.72  24.1r 13UQ17    568  C~2NKa      
2013 10  09.52445  00 59 23.953  +05 11 29.58  23.7r 13UQ17    568  C~2NKa      
2013 10  31.24273  00 57 31.175  +05 01 15.88  24.1r 13UQ17    568  C~2NKa      
2013 10  31.28571  00 57 30.973  +05 01 14.68  24.0r 13UQ17    568  C~2NKa      
2013 10  31.32850  00 57 30.749  +05 01 13.60  24.4r 13UQ17    568  C~2NKa      
2013 11  01.26903  00 57 26.190  +05 00 49.45  24.4r 13UQ17    568  C~2NKa      
2013 11  01.39303  00 57 25.594  +05 00 46.35  24.1r 13UQ17    568  C~2NKa      
2013 11  05.44717  00 57 06.405  +04 59 04.95  24.5r 13UQ17    568  C~2NKa      
2013 11  29.30934  00 55 34.960  +04 51 30.63  23.9r 13UQ17    568  C~2NKa      
2013 12  04.25882  00 55 21.715  +04 50 33.84  23.9r 13UQ17    568  C~2NKa      
2013 12  04.31091  00 55 21.602  +04 50 33.48  23.9r 13UQ17    568  C~2NKa      
2013 12  06.21580  00 55 17.114  +04 50 15.41  24.7r 13UQ17    568  C~2NKa      
2014 06  27.60171  01 09 19.580  +06 30 29.67  24.4r 13UQ17    568  C~2NKa      
2014 06  28.60677  01 09 21.845  +06 30 45.45  24.5r 13UQ17    568  C~2NKa      
2014 07  24.55310  01 09 45.168  +06 34 03.71  24.4r 13UQ17    568  C~2NKa      
2014 07  27.58380  01 09 43.455  +06 33 59.72  24.3r 13UQ17    568  C~2NKa      
2014 08  22.56814  01 08 52.279  +06 29 48.64  24.4r 13UQ17    568  C~2NKa      
2014 08  22.58822  01 08 52.246  +06 29 48.75  24.0r 13UQ17    568  C~2NKa      
2014 08  28.43091  01 08 32.538  +06 28 03.23  24.6r 13UQ17    568  C~2NKa      
2014 10  23.35237  01 03 59.613  +06 03 10.11  24.4r 13UQ17    568  C~2NKa      
2014 10  26.44781  01 03 43.575  +06 01 43.71  24.1r 13UQ17    568  C~2NKa      
2014 10  27.39107  01 03 38.767  +06 01 17.76  24.0r 13UQ17    568  C~2NKa      
2014 11  24.24776  01 01 36.153  +05 50 39.44  24.5r 13UQ17    568  C~2NKa      
2014 11  25.24396  01 01 32.731  +05 50 22.87  24.4r 13UQ17    568  C~2NKa      
2015 01  17.28768  01 00 49.685  +05 50 05.43  23.9r 13UQ17    568  C~2NKa      
2015 08  20.50656  01 14 42.694  +07 27 16.26  24.3r 13UQ17    568  C~2NKa      
2015 12  07.38190  01 06 40.357  +06 44 50.83  24.9w 13UQ17    568  C~2NKa      
2015 12  07.39423  01 06 40.313  +06 44 50.31  24.6w 13UQ17    568  C~2NKa      
2017 01  27.23065  01 12 22.795  +07 44 28.67  24.1w 13UQ17    568  C~2NKa      
2017 01  28.22691  01 12 25.562  +07 44 48.90  24.5w 13UQ17    568  C~2NKa      

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     0.00       0.00    -0.05
  2   0.0001     -1.09    -0.04       0.18     0.04
  3   0.0764  -1214.24    -0.22      51.89    -0.11
  4   0.0792  -1276.63    -0.13      54.14    -0.06
  5   0.0793  -1279.36    -0.11      54.22    -0.11
  6   0.0901  -1534.79     0.07      63.33     0.14
  7   0.0902  -1537.68     0.09      63.14    -0.18
  8   0.1776  -4048.23     0.04     152.74    -0.04
  9   0.1779  -4055.28     0.15     152.99    -0.11
 10   0.1862  -4315.16    -0.22     163.44     0.08
 11   0.2456  -6107.70    -0.06     244.89     0.11
 12   0.2458  -6110.95     0.06     244.95    -0.03
 13   0.2459  -6114.46    -0.08     245.24     0.06
 14   0.2485  -6186.70    -0.03     249.17     0.17
 15   0.2488  -6196.12     0.21     249.74     0.15
 16   0.2599  -6500.08    -0.04     266.55    -0.00
 17   0.3252  -7938.01    -0.05     373.94    -0.16
 18   0.3388  -8142.87    -0.03     397.89     0.11
 19   0.3389  -8144.57     0.30     398.21     0.15
 20   0.3441  -8213.54    -0.05     407.42     0.19
 21   0.9010   5711.65     0.01    1146.38     0.16
 22   0.9037   5748.90     0.03    1148.15    -0.05
 23   0.9748   6146.08     0.01    1199.48    -0.11
 24   0.9831   6120.93     0.17    1205.49    -0.32
 25   1.0542   5319.46    -0.28    1263.17    -0.10
 26   1.0543   5319.04     0.33    1263.46     0.13
 27   1.0703   5007.05     0.05    1277.61     0.05
 28   1.2234    674.68     0.06    1449.71     0.01
 29   1.2318    420.59    -0.10    1461.39     0.14
 30   1.2344    344.39     0.04    1464.85     0.09
 31   1.3107  -1590.04    -0.24    1575.88    -0.19
 32   1.3134  -1643.56    -0.06    1580.16    -0.10
 33   1.4586  -2243.54     0.18    1810.49    -0.17
 34   2.0479  11465.21     0.01    2478.71     0.02
 35   2.3460   3844.88     0.16    2846.34     0.11
 36   2.3460   3844.08    -0.16    2846.11    -0.17
 37   3.4872   9926.13     0.06    4222.97     0.03
 38   3.4900   9971.98    -0.14    4226.16     0.11

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.

13UQ17    quality flag:3

Type:           4:3E      4:3E      4:3E

axisobj        36.800    36.811    36.789
ecceobj         0.093     0.094     0.092
incobj         11.403    11.403    11.403
qmin           32.241    32.382    32.138
qmax           41.158    41.084    41.153
amean          36.479    36.479    36.479
amin           36.102    36.079    36.095
amax           36.893    36.905    36.883
emean           0.094     0.091     0.095
emin            0.071     0.070     0.072
emax            0.117     0.114     0.118
imean          12.445    13.567    11.618
imin           11.312    11.374    10.886
imax           13.167    14.812    12.128
excite_mean     0.235     0.252     0.223
fracstop        1.000     1.000     1.000
cjmean          2.960     2.950     2.967

libcent 0       179.9     179.8     180.6
libamp  0       101.1     108.8      95.2
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       178.2     180.6     179.1
kozaiamp        180.0     180.0     180.0