Orbit Fit and Astrometric record for 13UK15

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: 13UK15    
# Created Sun Oct 22 01:38:19 2017
# Orbit generated from Bernstein formalism
# Fitting   10 observations of   10
# Arc:   0.98y
# First observation: 2013/10/29
#  Last observation: 2014/10/23
Preliminary a, adot, b, bdot, g, gdot:
   0.000020   0.014318  -0.000009  -0.001110   0.018403   0.000000
# Chi-squared of fit:    11.47 DOF:   14 RMS:  0.19
# Min/Max residuals:    -0.50    0.30
# Exact a, adot, b, bdot, g, gdot:
  1.333933E-05  1.427220E-02 -1.778442E-06 -1.114944E-03  1.846812E-02 -8.199404E-04
# Covariance matrix:
  3.6797E-13  1.0261E-12 -3.8717E-14 -6.8248E-14  1.2176E-12  9.6351E-11
  1.0261E-12  3.0699E-11 -6.2038E-13 -1.5546E-12  2.1151E-11  1.9598E-09
 -3.8717E-14 -6.2038E-13  2.9126E-13 -2.8980E-13 -5.2660E-13 -4.3330E-11
 -6.8248E-14 -1.5546E-12 -2.8980E-13  8.9324E-13 -1.0852E-12 -1.0149E-10
  1.2176E-12  2.1151E-11 -5.2660E-13 -1.0852E-12  1.7119E-11  1.4520E-09
  9.6351E-11  1.9598E-09 -4.3330E-11 -1.0149E-10  1.4520E-09  1.3048E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
  -11.044956    7.024193   -0.472336   -0.167109   -0.856712  2456594.542638
# Heliocentric elements and errors
Epoch:              2456590.5000  =  2013/10/25
Mean Anomaly:          200.58924 +/-     6.963
Argument of Peri:       53.32209 +/-     6.960
Long of Asc Node:      119.67725 +/-     0.027
Inclination:            11.71352 +/-     0.002
Eccentricity:         0.16826500 +/-    0.0052
Semi-Major Axis:     47.40586700 +/-    0.1111
Time of Perihelion: 2509381.7202 +/-    2298.3
Perihelion:          39.42911887 +/-    0.2635
Aphelion:            55.38261513 +/-    0.2789
Period (y)              326.4047 +/-      1.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           53.55338780 +/-    0.0118
Ecliptic Y            7.07759590 +/-    0.0014
Ecliptic Z          -10.37363291 +/-    0.0023
Ecliptic XDOT        -0.00041475 +/-    0.0001
Ecliptic YDOT         0.00207987 +/-    0.0000
Ecliptic ZDOT        -0.00013880 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   55.00609029 +/-    0.0115
Geocenter to KBO     54.14737598 +/-    0.0121
# Hcoef:  6.10

The following table shows the complete astrometric record for 13UK15. 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 (13UK15) followed by the observatory code and reference code for the source of the astrometry.

2013 10  29.04186  00 43 18.857  -07 21 20.33  23.2r 13UK15    304  C~1x8Y      
2013 10  29.10905  00 43 18.643  -07 21 21.47        13UK15    304  C~1x8Y      
2013 10  30.03111  00 43 15.743  -07 21 34.64        13UK15    304  C~1x8Y      
2013 10  30.12393  00 43 15.450  -07 21 36.32        13UK15    304  C~1x8Y      
2013 12  24.08375  00 41 34.995  -07 22 48.14        13UK15    I11  C~1x8Y      
2013 12  25.07320  00 41 34.899  -07 22 36.18        13UK15    I11  C~1x8Y      
2014 08  29.58357  00 49 48.574  -06 42 35.46  23.5r 13UK15    568  C~1x8Y      
2014 08  29.62068  00 49 48.493  -06 42 36.48        13UK15    568  C~1x8Y      
2014 10  22.20625  00 46 49.903  -07 03 24.82        13UK15    304  C~1x8Y      
2014 10  23.10420  00 46 46.857  -07 03 40.37        13UK15    304  C~1x8Y      

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    -0.23       0.00     0.17
  2   0.0002     -3.37    -0.23       0.22    -0.00
  3   0.0027    -48.19     0.18       5.31    -0.13
  4   0.0030    -52.86     0.12       5.51    -0.50
  5   0.1534  -1452.62     0.18     533.79     0.30
  6   0.1561  -1449.18     0.02     545.34     0.22
  7   0.8338   6249.31    -0.12    -187.82     0.18
  8   0.8339   6247.79     0.14    -188.27    -0.03
  9   0.9806   3309.28     0.04    -266.81    -0.13
 10   0.9831   3261.49    -0.10    -262.93    -0.08

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.

13UK15    quality flag:1

Type:       SCATNEAR      2:1E CLASSICAL

axisobj        47.659    48.152    47.507
ecceobj         0.162     0.187     0.157
incobj         11.703    11.698    11.707
qmin           36.375    37.055    38.947
qmax           60.302    59.321    56.135
amean          47.758    47.798    47.302
amin           47.005    47.272    46.880
amax           48.670    48.387    47.802
emean           0.188     0.186     0.158
emin            0.144     0.142     0.143
emax            0.240     0.226     0.174
imean           9.974    10.124    10.224
imin            9.041     8.936     9.732
imax           10.734    11.313    10.701
excite_mean     0.256     0.257     0.238
fracstop        1.000     1.000     1.000
cjmean          3.066     3.067     3.072

libcent 0      -180.0     266.6    -180.0
libamp  0      -180.0      44.2    -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       177.2     183.2     181.7
kozaiamp        180.0     180.0     180.0