Orbit Fit and Astrometric record for 13UH15

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: 13UH15    
# Created Tue Oct 17 01:38:18 2017
# Orbit generated from Bernstein formalism
# Fitting   10 observations of   10
# Arc:   1.96y
# First observation: 2013/10/29
#  Last observation: 2015/10/16
Preliminary a, adot, b, bdot, g, gdot:
  -0.000043   0.017569   0.000019  -0.007666   0.019441   0.000000
# Chi-squared of fit:     9.83 DOF:   14 RMS:  0.18
# Min/Max residuals:    -0.22    0.37
# Exact a, adot, b, bdot, g, gdot:
  1.408498E-05  1.709924E-02 -6.971204E-06 -7.481722E-03  1.953495E-02 -1.197760E-02
# Covariance matrix:
  3.7291E-13 -5.0745E-13 -2.8551E-14  1.1062E-13  4.3012E-13 -6.7796E-12
 -5.0745E-13  3.1154E-12  1.2802E-13 -1.1272E-12  8.6554E-14  7.6727E-11
 -2.8551E-14  1.2802E-13  2.5230E-13 -2.0167E-13 -6.2727E-14  3.0243E-12
  1.1062E-13 -1.1272E-12 -2.0167E-13  6.9488E-13 -1.7624E-13 -3.0962E-11
  4.3012E-13  8.6554E-14 -6.2727E-14 -1.7624E-13  2.2836E-12  1.5879E-11
 -6.7796E-12  7.6727E-11  3.0243E-12 -3.0962E-11  1.5879E-11  2.1306E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
  -12.119368   21.772376   -0.235222   -0.202313   -0.942715  2456594.581188
# Heliocentric elements and errors
Epoch:              2456590.5000  =  2013/10/25
Mean Anomaly:          353.49975 +/-     0.124
Argument of Peri:      282.73601 +/-     0.069
Long of Asc Node:      176.56169 +/-     0.002
Inclination:            26.09374 +/-     0.001
Eccentricity:         0.80313416 +/-    0.0028
Semi-Major Axis:    177.82162283 +/-    2.2629
Time of Perihelion: 2472229.2852 +/-      17.5
Perihelion:          35.00700372 +/-    0.6719
Aphelion:           320.63624195 +/-    4.1112
Period (y)             2371.2921 +/-     45.26
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           47.28632721 +/-    0.0036
Ecliptic Y           19.14344898 +/-    0.0014
Ecliptic Z          -10.74774001 +/-    0.0008
Ecliptic XDOT        -0.00262370 +/-    0.0000
Ecliptic YDOT         0.00153349 +/-    0.0000
Ecliptic ZDOT        -0.00067263 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   52.13427179 +/-    0.0033
Geocenter to KBO     51.19030617 +/-    0.0040
# Hcoef:  7.77

The following table shows the complete astrometric record for 13UH15. 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 (13UH15) followed by the observatory code and reference code for the source of the astrometry.

2013 10  29.08041  01 38 30.772  -02 46 20.79  24.8r 13UH15    304  C~1x8X      
2013 10  30.06945  01 38 27.258  -02 46 42.54  24.8r 13UH15    304  C~1x8X      
2013 10  30.13335  01 38 27.015  -02 46 43.53  24.8r 13UH15    304  C~1x8X      
2013 10  30.20127  01 38 26.776  -02 46 45.46  24.8r 13UH15    304  C~1x8X      
2013 12  23.07854  01 36 07.254  -02 55 26.47  24.7r 13UH15    I11  C~1x8X      
2013 12  24.10280  01 36 06.140  -02 55 22.57        13UH15    I11  C~1x8X      
2014 10  26.03329  01 43 02.698  -02 47 17.29        13UH15    304  C~1x8X      
2014 10  26.06964  01 43 02.530  -02 47 18.14        13UH15    304  C~1x8X      
2015 10  16.31811  01 48 05.751  -02 45 19.40  24.6r 13UH15    304  C~1x8X      
2015 10  16.34413  01 48 05.655  -02 45 20.04  24.6r 13UH15    304  C~1x8X      

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    -0.05       0.00     0.19
  2   0.0027    -56.96     0.05      -0.74    -0.16
  3   0.0029    -60.71     0.03      -0.31     0.26
  4   0.0031    -64.75    -0.05      -0.78    -0.22
  5   0.1506  -2199.63     0.04     287.64    -0.22
  6   0.1534  -2213.70    -0.13     297.43    -0.17
  7   0.9910   3764.07     0.33   -1561.24     0.19
  8   0.9911   3761.42    -0.14   -1561.10     0.37
  9   1.9637   8028.06    -0.06   -3138.88    -0.14
 10   1.9638   8026.49    -0.03   -3138.94    -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.

13UH15    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj       179.939   186.818   173.621
ecceobj         0.804     0.813     0.796
incobj         26.002    26.000    26.004
qmin           33.463    33.322    33.675
qmax          330.579   347.912   328.508
amean         172.636   180.506   170.516
amin          166.124   173.081   163.053
amax          182.806   191.472   182.508
emean           0.792     0.806     0.789
emin            0.779     0.794     0.778
emax            0.808     0.817     0.801
imean          26.704    25.734    26.493
imin           25.351    25.242    25.379
imax           28.451    26.789    28.211
excite_mean     0.911     0.915     0.907
fracstop        1.000     1.000     1.000
cjmean          2.785     2.779     2.791

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       316.0     303.4     314.1
kozaiamp         34.2      22.7      33.6