Orbit Fit and Astrometric record for 13UY17

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: 13UY17    
# Created Mon Dec 18 02:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   37 observations of   37
# Arc:   2.35y
# First observation: 2013/08/02
#  Last observation: 2015/12/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000124   0.020487   0.000001   0.001553   0.022272   0.000000
# Chi-squared of fit:    12.67 DOF:   68 RMS:  0.10
# Min/Max residuals:    -0.29    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.446327E-05  2.035556E-02  1.165382E-06  1.553317E-03  2.221256E-02  1.382392E-03
# Covariance matrix:
  1.3900E-13 -6.2543E-15 -8.3021E-16  7.5004E-15  1.1573E-13  2.8062E-12
 -6.2543E-15  2.7241E-13 -4.2967E-15  2.4980E-14  1.6026E-13  8.9985E-12
 -8.3021E-16 -4.2967E-15  7.6386E-14 -6.4912E-14 -3.2838E-15 -2.4760E-13
  7.5004E-15  2.4980E-14 -6.4912E-14  1.1535E-13  2.2797E-14  1.4118E-12
  1.1573E-13  1.6026E-13 -3.2838E-15  2.2797E-14  2.3997E-13  8.3569E-12
  2.8062E-12  8.9985E-12 -2.4760E-13  1.4118E-12  8.3569E-12  5.0749E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.049803   17.059674    0.935581   -0.007264   -0.398065  2456507.032638
# Heliocentric elements and errors
Epoch:              2456500.5000  =  2013/07/27
Mean Anomaly:          114.72520 +/-     0.654
Argument of Peri:      226.65889 +/-     0.644
Long of Asc Node:       29.34954 +/-     0.003
Inclination:             4.45848 +/-     0.001
Eccentricity:         0.05024863 +/-    0.0009
Semi-Major Axis:     44.40435376 +/-    0.0056
Time of Perihelion: 2422058.1266 +/-     196.3
Perihelion:          42.17309568 +/-    0.0409
Aphelion:            46.63561184 +/-    0.0410
Period (y)              295.9011 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           43.68631929 +/-    0.0010
Ecliptic Y           12.43058098 +/-    0.0003
Ecliptic Z           -0.82473141 +/-    0.0000
Ecliptic XDOT        -0.00057606 +/-    0.0000
Ecliptic YDOT         0.00244875 +/-    0.0000
Ecliptic ZDOT         0.00018844 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.42789912 +/-    0.0009
Geocenter to KBO     45.01957793 +/-    0.0010
# Hcoef:  7.45

The following table shows the complete astrometric record for 13UY17. 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 (13UY17) followed by the observatory code and reference code for the source of the astrometry.

2013 08  02.53186  01 04 30.816  +05 43 53.17  24.1r 13UY17    568  C~2NKb      
2013 08  02.57457  01 04 30.761  +05 43 52.93  24.3r 13UY17    568  C~2NKb      
2013 08  30.44895  01 03 29.837  +05 37 29.18  23.7r 13UY17    568  C~2NKb      
2013 08  31.45170  01 03 26.735  +05 37 09.79  23.8r 13UY17    568  C~2NKb      
2013 08  31.51259  01 03 26.556  +05 37 08.95  24.1r 13UY17    568  C~2NKb      
2013 08  31.51726  01 03 26.528  +05 37 08.56  23.6r 13UY17    568  C~2NKb      
2013 09  04.43153  01 03 13.886  +05 35 50.54  24.0r 13UY17    568  C~2NKb      
2013 09  04.47439  01 03 13.746  +05 35 49.66  24.7r 13UY17    568  C~2NKb      
2013 09  04.50640  01 03 13.625  +05 35 48.69  24.1r 13UY17    568  C~2NKb      
2013 10  06.41277  01 01 09.095  +05 23 12.80  23.4r 13UY17    568  C~2NKb      
2013 10  06.50014  01 01 08.722  +05 23 10.41  23.7r 13UY17    568  C~2NKb      
2013 10  06.50554  01 01 08.690  +05 23 10.15  24.0r 13UY17    568  C~2NKb      
2013 10  06.51103  01 01 08.663  +05 23 10.09  22.7r 13UY17    568  C~2NKb      
2013 10  06.51584  01 01 08.647  +05 23 09.90  23.9r 13UY17    568  C~2NKb      
2013 10  09.54274  01 00 55.822  +05 21 53.03  23.8r 13UY17    568  C~2NKb      
2013 10  31.25446  00 59 26.251  +05 13 04.27  23.6r 13UY17    568  C~2NKb      
2013 10  31.29744  00 59 26.074  +05 13 03.23  23.9r 13UY17    568  C~2NKb      
2013 10  31.34016  00 59 25.906  +05 13 02.31  23.8r 13UY17    568  C~2NKb      
2013 11  01.28119  00 59 22.269  +05 12 41.28  23.9r 13UY17    568  C~2NKb      
2013 11  01.40856  00 59 21.764  +05 12 38.35  23.8r 13UY17    568  C~2NKb      
2013 11  05.45881  00 59 06.474  +05 11 09.93  23.8r 13UY17    568  C~2NKb      
2013 12  04.27126  00 57 41.941  +05 03 20.75  23.8r 13UY17    568  C~2NKb      
2013 12  04.32344  00 57 41.843  +05 03 20.23  24.1r 13UY17    568  C~2NKb      
2014 06  27.59003  01 08 31.034  +06 14 32.99  23.9r 13UY17    568  C~2NKb      
2014 06  28.59510  01 08 32.754  +06 14 43.12  24.1r 13UY17    568  C~2NKb      
2014 07  24.55310  01 08 49.447  +06 16 14.18  23.9r 13UY17    568  C~2NKb      
2014 07  27.58380  01 08 47.871  +06 16 03.28  24.3r 13UY17    568  C~2NKb      
2014 08  22.56814  01 08 06.060  +06 11 39.69  23.6r 13UY17    568  C~2NKb      
2014 08  22.58822  01 08 06.005  +06 11 39.78  23.7r 13UY17    568  C~2NKb      
2014 08  22.59325  01 08 05.978  +06 11 39.58  24.0r 13UY17    568  C~2NKb      
2014 08  28.43479  01 07 50.202  +06 10 02.41  23.5r 13UY17    568  C~2NKb      
2014 10  23.35237  01 04 13.473  +05 48 22.82  23.8r 13UY17    568  C~2NKb      
2014 10  27.39107  01 03 56.931  +05 46 46.12  23.7r 13UY17    568  C~2NKb      
2014 12  17.27453  01 01 33.369  +05 33 34.06  24.0r 13UY17    568  C~2NKb      
2015 01  17.30307  01 01 39.198  +05 35 21.38  24.2r 13UY17    568  C~2NKb      
2015 08  20.50656  01 12 24.366  +06 43 47.39  24.1r 13UY17    568  C~2NKb      
2015 12  07.39423  01 06 00.323  +06 06 27.35  24.3w 13UY17    568  C~2NKb      

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     0.01       0.00    -0.01
  2   0.0001     -0.85     0.03       0.09     0.08
  3   0.0764   -987.86    -0.00      -6.76     0.17
  4   0.0792  -1038.07    -0.03      -6.96    -0.01
  5   0.0793  -1040.86     0.32      -6.71     0.21
  6   0.0794  -1041.39     0.02      -6.91     0.01
  7   0.0901  -1245.61     0.00      -6.78     0.05
  8   0.0902  -1247.88     0.08      -6.79     0.02
  9   0.0903  -1249.92    -0.20      -7.00    -0.21
 10   0.1776  -3257.27     0.08       7.11     0.15
 11   0.1779  -3263.34     0.07       7.04    -0.02
 12   0.1779  -3263.88    -0.10       6.98    -0.09
 13   0.1779  -3264.27    -0.11       7.08     0.00
 14   0.1779  -3264.57    -0.07       7.00    -0.08
 15   0.1862  -3470.99     0.23       9.47    -0.23
 16   0.2456  -4909.91     0.05      34.77    -0.08
 17   0.2458  -4912.75    -0.08      34.82    -0.10
 18   0.2459  -4915.42    -0.04      34.94    -0.07
 19   0.2485  -4973.69     0.02      36.39     0.06
 20   0.2488  -4981.79    -0.08      36.59     0.01
 21   0.2599  -5226.78    -0.01      42.71     0.03
 22   0.3388  -6574.14    -0.12      95.24     0.03
 23   0.3389  -6575.69     0.03      95.33    -0.01
 24   0.9009   4014.92     0.04     334.20     0.05
 25   0.9037   4042.50     0.07     333.81     0.05
 26   0.9747   4307.44     0.07     323.33     0.06
 27   0.9830   4281.55    -0.18     322.19     0.03
 28   1.0542   3604.44    -0.11     315.66    -0.29
 29   1.0542   3603.72     0.00     316.06     0.10
 30   1.0542   3603.27    -0.24     316.03     0.07
 31   1.0702   3348.66     0.05     315.75     0.05
 32   1.2233   -136.10     0.04     348.11     0.02
 33   1.2344   -401.18    -0.03     353.15    -0.01
 34   1.3737  -2684.20    -0.08     441.96    -0.02
 35   1.4586  -2562.67     0.19     507.72    -0.03
 36   2.0478   7901.55     0.08     637.36     0.00
 37   2.3460   1751.42     0.02     741.59     0.00

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.

13UY17    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.640    44.659    44.622
ecceobj         0.050     0.053     0.048
incobj          4.448     4.447     4.448
qmin           41.501    41.420    41.574
qmax           47.521    47.608    47.367
amean          44.382    44.400    44.364
amin           44.040    44.048    44.027
amax           44.747    44.759    44.720
emean           0.048     0.050     0.046
emin            0.033     0.035     0.030
emax            0.062     0.064     0.059
imean           3.969     3.969     3.970
imin            3.362     3.363     3.359
imax            4.456     4.457     4.456
excite_mean     0.084     0.085     0.083
fracstop        1.000     1.000     1.000
cjmean          3.097     3.097     3.097

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       179.7     179.6     179.8
kozaiamp        179.9     179.9     180.0