Orbit Fit and Astrometric record for 13UJ15

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: 13UJ15    
# Created Fri Oct 20 01:38:22 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:   0.99y
# First observation: 2013/10/28
#  Last observation: 2014/10/25
Preliminary a, adot, b, bdot, g, gdot:
   0.000005   0.009084  -0.000000  -0.005501   0.015630   0.000000
# Chi-squared of fit:    45.44 DOF:   24 RMS:  0.31
# Min/Max residuals:    -0.52    0.96
# Exact a, adot, b, bdot, g, gdot:
  7.826502E-06  9.075677E-03 -4.444863E-06 -5.511536E-03  1.571753E-02  2.357703E-03
# Covariance matrix:
  1.8292E-13  3.9271E-13 -6.5562E-15 -3.0907E-13  6.6991E-13  6.1303E-11
  3.9271E-13  1.2899E-11 -6.5851E-14 -6.0835E-12  1.0877E-11  1.1981E-09
 -6.5562E-15 -6.5851E-14  1.4450E-13 -1.2793E-13 -1.0202E-13 -8.0774E-12
 -3.0907E-13 -6.0835E-12 -1.2793E-13  3.7170E-12 -5.7733E-12 -6.0845E-10
  6.6991E-13  1.0877E-11 -1.0202E-13 -5.7733E-12  1.1766E-11  1.1423E-09
  6.1303E-11  1.1981E-09 -8.0774E-12 -6.0845E-10  1.1423E-09  1.2003E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
  -11.456121    7.215734   -0.454171   -0.175224   -0.865212  2456593.538948
# Heliocentric elements and errors
Epoch:              2456590.5000  =  2013/10/25
Mean Anomaly:          123.59028 +/-     4.430
Argument of Peri:       54.03922 +/-     3.793
Long of Asc Node:      169.77087 +/-     0.007
Inclination:            33.08780 +/-     0.010
Eccentricity:         0.30533435 +/-    0.0133
Semi-Major Axis:     52.90921476 +/-    0.4534
Time of Perihelion: 2408331.6238 +/-    1614.7
Perihelion:          36.75421415 +/-    0.7722
Aphelion:            69.06421536 +/-    0.9205
Period (y)              384.8621 +/-      4.95
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           62.67987735 +/-    0.0135
Ecliptic Y            8.39657586 +/-    0.0017
Ecliptic Z          -12.63699033 +/-    0.0028
Ecliptic XDOT         0.00000541 +/-    0.0001
Ecliptic YDOT         0.00159340 +/-    0.0000
Ecliptic ZDOT        -0.00102236 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   64.49002276 +/-    0.0131
Geocenter to KBO     63.62324540 +/-    0.0139
# Hcoef:  7.06

The following table shows the complete astrometric record for 13UJ15. 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 (13UJ15) followed by the observatory code and reference code for the source of the astrometry.

2013 10  28.03817  00 44 40.200  -07 39 28.91  25.0r 13UJ15    304  C~1x8X      
2013 10  28.10613  00 44 40.007  -07 39 30.20        13UJ15    304  C~1x8X      
2013 10  28.18093  00 44 39.784  -07 39 31.21        13UJ15    304  C~1x8X      
2013 10  30.04327  00 44 34.624  -07 39 59.15        13UJ15    304  C~1x8X      
2013 10  30.05093  00 44 34.578  -07 39 59.26        13UJ15    304  C~1x8X      
2013 10  30.09075  00 44 34.488  -07 40 00.25        13UJ15    304  C~1x8X      
2013 10  30.09901  00 44 34.465  -07 40 00.28        13UJ15    304  C~1x8X      
2013 10  30.14033  00 44 34.349  -07 40 01.21        13UJ15    304  C~1x8X      
2013 10  30.14828  00 44 34.324  -07 40 01.05        13UJ15    304  C~1x8X      
2013 12  24.09154  00 43 05.722  -07 43 36.54        13UJ15    I11  C~1x8X      
2013 12  31.06543  00 43 06.020  -07 42 34.48        13UJ15    I11  C~1x8X      
2014 08  29.57884  00 49 57.025  -07 22 16.79        13UJ15    568  C~1x8X      
2014 08  29.61572  00 49 56.914  -07 22 18.55  25.0r 13UJ15    568  C~1x8Y      
2014 10  22.21348  00 47 23.106  -07 42 45.70        13UJ15    304  C~1x8Y      
2014 10  25.06054  00 47 14.857  -07 43 34.61        13UJ15    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     0.27       0.00    -0.23
  2   0.0002     -3.15     0.18      -0.04    -0.43
  3   0.0004     -6.59     0.10       0.35    -0.22
  4   0.0055    -88.08     0.16       5.26     0.36
  5   0.0055    -88.75    -0.18       5.44     0.51
  6   0.0056    -90.37    -0.04       5.06     0.03
  7   0.0056    -90.70    -0.01       5.17     0.11
  8   0.0058    -92.65    -0.14       5.00    -0.17
  9   0.0058    -92.93    -0.06       5.30     0.10
 10   0.1562  -1387.06    -0.15     331.42    -0.10
 11   0.1753  -1358.33    -0.17     386.62    -0.23
 12   0.8365   4732.36     0.25    -936.61     0.96
 13   0.8366   4730.14    -0.40    -937.56     0.32
 14   0.9834   2142.23     0.04   -1146.51    -0.51
 15   0.9912   2010.27     0.13   -1142.35    -0.52

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.

13UJ15    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        53.164    54.843    52.138
ecceobj         0.302     0.346     0.269
incobj         32.947    32.976    32.919
qmin           36.298    34.640    36.486
qmax           70.258    75.549    68.065
amean          52.968    54.657    51.946
amin           52.479    54.089    51.463
amax           53.572    55.386    52.567
emean           0.138     0.346     0.279
emin            0.046     0.325     0.260
emax            0.313     0.365     0.296
imean          35.554    32.576    32.265
imin           32.234    32.079    31.902
imax           36.591    33.198    32.734
excite_mean     0.602     0.640     0.602
fracstop        1.000     1.000     1.000
cjmean          2.700     2.682     2.714

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        66.4     164.8     159.6
kozaiamp         39.2     180.0     179.9