Orbit Fit and Astrometric record for 13QX103

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: 13QX103   
# Created Fri Dec  3 02:11:45 2021
# Orbit generated from Bernstein formalism
# Fitting     15 observations of     15
# Arc:   4.11y
# First observation: 2013/08/16
#  Last observation: 2017/09/27
Preliminary a, adot, b, bdot, g, gdot:
   0.000209   0.030062  -0.000064  -0.008081   0.027937   0.000000
# Chi-squared of fit:     4.52 DOF:     24 RMS:  0.10
# Min/Max residuals:    -0.21    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.686199E-05  3.039653E-02 -4.393987E-06 -8.119078E-03  2.729563E-02  1.248251E-03
# Covariance matrix:
  8.5075E-13  1.1666E-13 -2.3425E-13 -1.4301E-13  3.3351E-12 -3.1786E-13
  1.1666E-13  6.4190E-13 -1.0239E-13 -2.0227E-13  2.0366E-12  4.1803E-12
 -2.3425E-13 -1.0239E-13  3.5271E-13 -1.0680E-14 -1.3664E-12 -8.3393E-14
 -1.4301E-13 -2.0227E-13 -1.0680E-14  1.1442E-13 -1.0799E-12 -1.1498E-12
  3.3351E-12  2.0366E-12 -1.3664E-12 -1.0799E-12  2.0471E-11  5.7384E-12
 -3.1786E-13  4.1803E-12 -8.3393E-14 -1.1498E-12  5.7384E-12  3.3847E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -30.048911  -68.286137   -0.529736   -0.433024   -0.748681  2456520.701678
# Heliocentric elements and errors
Epoch:              2456520.5000  =  2013/08/16
Mean Anomaly:            7.94016 +/-     0.035
Argument of Peri:      231.97727 +/-     0.059
Long of Asc Node:       50.55802 +/-     0.001
Inclination:            32.50616 +/-     0.000
Eccentricity:         0.26019882 +/-    0.0006
Semi-Major Axis:     50.23108716 +/-    0.0474
Time of Perihelion: 2453652.4659 +/-      11.8
Perihelion:          37.16101735 +/-    0.0452
Aphelion:            63.30115698 +/-    0.0661
Period (y)              356.0140 +/-      0.50
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           12.54506816 +/-    0.0019
Ecliptic Y          -30.06652404 +/-    0.0049
Ecliptic Z          -18.34516555 +/-    0.0030
Ecliptic XDOT         0.00271556 +/-    0.0000
Ecliptic YDOT         0.00140522 +/-    0.0000
Ecliptic ZDOT        -0.00076747 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.38876438 +/-    0.0043
Geocenter to KBO     36.63590653 +/-    0.0061
# Hcoef:  7.80

The following table shows the complete astrometric record for 13QX103. 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 (13QX103) followed by the observatory code and reference code for the source of the astrometry.

2013 08  16.20090  20 02 56.073  -51 11 48.43  23.5z 13QX103   W84  C~52RF      
2013 08  31.99714  20 01 14.644  -51 08 34.11  24.1g 13QX103   W84  C~52RF      
2013 09  01.05265  20 01 14.356  -51 08 32.90  23.8r 13QX103   W84  C~52RF      
2013 09  01.05404  20 01 14.317  -51 08 32.79  23.6i 13QX103   W84  C~52RF      
2013 09  04.03903  20 00 58.106  -51 07 32.27  23.8r 13QX103   W84  C~52RF      
2015 09  11.02705  20 23 08.250  -51 03 44.44  23.0i 13QX103   W84  C~52RF      
2015 09  11.02842  20 23 08.242  -51 03 44.62  23.6r 13QX103   W84  C~52RF      
2015 09  11.02981  20 23 08.249  -51 03 44.31  24.3g 13QX103   W84  C~52RF      
2015 09  11.05174  20 23 08.144  -51 03 43.85  23.4z 13QX103   W84  C~52RF      
2016 09  22.99742  20 33 25.851  -50 51 23.84  23.6r 13QX103   W84  C~52RF      
2017 09  14.08871  20 45 14.211  -50 44 58.98  23.5r 13QX103   W84  C~52RF      
2017 09  14.09008  20 45 14.215  -50 44 58.87  23.1i 13QX103   W84  C~52RF      
2017 09  27.02515  20 44 17.191  -50 39 03.43  23.0z 13QX103   W84  C~52RF      
2017 09  27.02654  20 44 17.194  -50 39 03.37  23.6r 13QX103   W84  C~52RF      
2017 09  27.02790  20 44 17.186  -50 39 03.29  23.3i 13QX103   W84  C~52RF      

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     0.15       0.00    -0.06
     2   0.0432   -882.83    -0.21     410.39    -0.11
     3   0.0434   -885.20     0.12     412.19    -0.00
     4   0.0434   -885.53    -0.15     412.38     0.14
     5   0.0516  -1020.22     0.09     506.21    -0.00
     6   2.0693  11131.95    -0.09   -2595.01     0.07
     7   2.0693  11131.83    -0.16   -2595.16    -0.13
     8   2.0693  11131.98     0.05   -2594.88     0.10
     9   2.0694  11131.18     0.12   -2594.14     0.03
    10   3.1042  16928.27     0.11   -3751.76    -0.02
    11   4.0791  23412.77    -0.12   -5778.98     0.05
    12   4.0791  23412.85     0.01   -5778.89     0.08
    13   4.1145  23035.36    -0.02   -5243.95    -0.05
    14   4.1145  23035.41     0.06   -5243.91    -0.07
    15   4.1145  23035.37     0.04   -5243.80    -0.03

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.

13QX103    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        50.333    50.475    50.191
ecceobj         0.262     0.264     0.260
incobj         32.551    32.551    32.551
qmin           36.264    36.349    36.057
qmax           65.339    65.641    65.283
amean          50.482    50.647    50.401
amin           50.007    50.175    49.910
amax           51.055    51.257    50.983
emean           0.261     0.262     0.260
emin            0.241     0.245     0.241
emax            0.280     0.281     0.282
imean          31.638    31.657    31.636
imin           31.234    31.264    31.160
imax           32.199    32.140    32.138
excite_mean     0.586     0.587     0.585
fracstop        1.000     1.000     1.000
cjmean          2.725     2.725     2.724

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       189.4     198.0     198.2
kozaiamp        180.0     180.0     180.0