Orbit Fit and Astrometric record for 13RO109

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: 13RO109   
# Created Tue Apr  1 01:09:34 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     32 observations of     32
# Arc:   5.21y
# First observation: 2013/09/11
#  Last observation: 2018/11/26
# Chi-squared of fit:     8.32 DOF:     58 RMS:  0.09
# Min/Max residuals:    -0.30    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.672198E-05  2.355287E-02 -5.171982E-07  3.940780E-04  2.404778E-02 -1.435087E-04
# Covariance matrix:
  2.7633E-13 -6.4986E-14 -6.2335E-16 -2.6739E-16  1.5631E-13 -1.8652E-13
 -6.4986E-14  1.5092E-13 -1.4693E-15  2.7307E-15  7.5889E-14  1.4582E-12
 -6.2335E-16 -1.4693E-15  1.6874E-13 -4.4376E-14 -2.1901E-15 -1.6180E-14
 -2.6739E-16  2.7307E-15 -4.4376E-14  1.6080E-14  1.7782E-15  2.9572E-14
  1.5631E-13  7.5889E-14 -2.1901E-15  1.7782E-15  3.1264E-13  8.7920E-13
 -1.8652E-13  1.4582E-12 -1.6180E-14  2.9572E-14  8.7920E-13  1.5775E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -1.217095    1.097481    0.221485   -0.020777   -0.982626  2456546.798764
# Heliocentric elements and errors
Epoch:              2456546.5000  =  2013/09/11
Mean Anomaly:          339.03017 +/-     0.240
Argument of Peri:      331.24591 +/-     0.259
Long of Asc Node:       52.07936 +/-     0.009
Inclination:             1.52395 +/-     0.000
Eccentricity:         0.03649368 +/-    0.0001
Semi-Major Axis:     44.06033425 +/-    0.0040
Time of Perihelion: 2462768.9663 +/-      72.5
Perihelion:          42.45241034 +/-    0.0055
Aphelion:            45.66825815 +/-    0.0057
Period (y)              292.4690 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.55345939 +/-    0.0010
Ecliptic Y            0.59684164 +/-    0.0000
Ecliptic Z           -0.88331459 +/-    0.0000
Ecliptic XDOT        -0.00007292 +/-    0.0000
Ecliptic YDOT         0.00267955 +/-    0.0000
Ecliptic ZDOT         0.00004534 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.56681935 +/-    0.0010
Geocenter to KBO     41.58390991 +/-    0.0010
# Hcoef:  6.78

The following table shows the complete astrometric record for 13RO109. 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 (13RO109) followed by the observatory code and reference code for the source of the astrometry.

2013 09  11.297986 00 05 57.84   -00 40 48.6   23.8g 13RO109   W84  C~35bX      
2013 09  11.29851  00 05 57.858  -00 40 48.68  24.1g 13RO109   W84  C~4yQp      
2013 10  13.09891  00 03 40.380  -00 55 30.30  22.1z 13RO109   W84  C~4yQp      
2013 10  13.12596  00 03 40.272  -00 55 31.04  22.6i 13RO109   W84  C~4yQp      
2013 11  08.14071  00 02 07.781  -01 04 58.42  23.1r 13RO109   W84  C~4yQp      
2013 11  22.06122  00 01 35.149  -01 08 05.60  23.2r 13RO109   W84  C~4yQp      
2013 11  22.08831  00 01 35.104  -01 08 05.69  23.2i 13RO109   W84  C~4yQp      
2013 11  23.09553  00 01 33.300  -01 08 15.61  22.9i 13RO109   W84  C~4yQp      
2014 11  13.09960  00 06 47.485  -00 33 04.44  22.3z 13RO109   W84  C~4yQp      
2016 09  10.32821  00 20 44.832  +00 59 45.58  23.1i 13RO109   W84  C~4yQp      
2016 09  10.32957  00 20 44.822  +00 59 45.49  23.0r 13RO109   W84  C~4yQp      
2016 09  10.33095  00 20 44.834  +00 59 45.58  23.9g 13RO109   W84  C~4yQp      
2016 09  11.16744  00 20 41.343  +00 59 22.52  22.1z 13RO109   W84  C~4yQp      
2016 10  02.17611  00 19 09.988  +00 49 33.29  22.5i 13RO109   W84  C~4yQp      
2016 10  02.17749  00 19 09.983  +00 49 33.34  22.5r 13RO109   W84  C~4yQp      
2016 11  18.06482  00 16 17.914  +00 31 51.18  22.3i 13RO109   W84  C~4yQp      
2016 11  18.06619  00 16 17.915  +00 31 51.26  22.8r 13RO109   W84  C~4yQp      
2016 11  18.06758  00 16 17.913  +00 31 51.24  24.6g 13RO109   W84  C~4yQp      
2016 12  04.090139 00 15 49.15   +00 29 14.5   22.5z 13RO109   W84  C~35bX      
2016 12  04.09067  00 15 49.157  +00 29 14.31  22.9z 13RO109   W84  C~4yQp      
2017 09  27.193241 00 24 28.05   +01 25 25.6   23.0r 13RO109   W84  C~35bX      
2017 09  27.19377  00 24 28.047  +01 25 25.58  23.0r 13RO109   W84  C~4yQp      
2017 09  27.194606 00 24 28.05   +01 25 25.7   22.5i 13RO109   W84  C~35bX      
2017 09  27.19514  00 24 28.047  +01 25 25.63  22.6i 13RO109   W84  C~4yQp      
2017 09  27.19652  00 24 28.037  +01 25 25.58  24.4g 13RO109   W84  C~4yQp      
2017 10  12.18111  00 23 22.401  +01 18 28.81  23.7g 13RO109   W84  C~4yQp      
2017 10  27.16579  00 22 21.261  +01 12 07.28  22.0z 13RO109   W84  C~4yQp      
2017 10  29.146169 00 22 13.82   +01 11 21.5   23.2z 13RO109   W84  C~35bX      
2017 10  29.14670  00 22 13.818  +01 11 21.47  23.1z 13RO109   W84  C~4yQp      
2018 09  17.30205  00 30 07.613  +02 03 33.54  23.2i 13RO109   W84  C~4yQp      
2018 10  18.15211  00 27 53.264  +01 49 19.37  22.4z 13RO109   W84  C~4yQp      
2018 11  26.07682  00 25 45.387  +01 36 27.01  23.8g 13RO109   W84  C~4yQp      

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    -0.30       0.00     0.05
     2   0.0000      0.00     0.01       0.00    -0.02
     3   0.0871      0.00    -0.02       0.00     0.03
     4   0.0871      0.00     0.06       0.00    -0.01
     5   0.1584      0.00     0.08       0.00    -0.03
     6   0.1965      0.00     0.04       0.00    -0.05
     7   0.1966      0.00     0.14       0.00     0.13
     8   0.1993      0.00    -0.04       0.00    -0.09
     9   1.1713      0.00     0.04       0.00    -0.02
    10   2.9980      0.00     0.06       0.00     0.08
    11   2.9980      0.00    -0.00       0.00     0.03
    12   2.9980      0.00     0.27       0.00     0.16
    13   3.0003      0.00     0.03       0.00    -0.13
    14   3.0578      0.00    -0.08       0.00    -0.05
    15   3.0578      0.00    -0.06       0.00     0.04
    16   3.1862      0.00     0.01       0.00    -0.08
    17   3.1862      0.00     0.08       0.00     0.02
    18   3.1862      0.00     0.10       0.00     0.01
    19   3.2301      0.00    -0.13       0.00     0.01
    20   3.2301      0.00    -0.02       0.00    -0.17
    21   4.0435      0.00    -0.06       0.00    -0.07
    22   4.0435      0.00    -0.07       0.00    -0.07
    23   4.0435      0.00     0.03       0.00     0.07
    24   4.0435      0.00     0.02       0.00     0.02
    25   4.0435      0.00    -0.04       0.00     0.01
    26   4.0846      0.00    -0.03       0.00     0.26
    27   4.1256      0.00    -0.10       0.00    -0.03
    28   4.1310      0.00     0.05       0.00     0.06
    29   4.1310      0.00     0.05       0.00     0.04
    30   5.0158      0.00     0.01       0.00     0.04
    31   5.1002      0.00     0.10       0.00    -0.14
    32   5.2068      0.00    -0.06       0.00    -0.01

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.

13RO109    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.311    44.311    44.311
ecceobj         0.041     0.041     0.041
incobj          1.523     1.523     1.523
qmin           41.488    41.488    41.486
qmax           46.919    46.922    46.915
amean          44.093    44.093    44.093
amin           43.751    43.752    43.751
amax           44.446    44.454    44.444
emean           0.040     0.040     0.040
emin            0.024     0.024     0.024
emax            0.056     0.056     0.056
imean           1.100     1.100     1.100
imin            0.317     0.317     0.317
imax            1.631     1.631     1.631
excite_mean     0.045     0.045     0.045
fracstop        1.000     1.000     1.000
cjmean          3.100     3.100     3.100

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       196.9     197.1     197.0
kozaiamp        180.0     180.0     180.0