Orbit Fit and Astrometric record for 13RQ124

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: 13RQ124   
# Created Mon Dec  6 02:11:48 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     28 observations of     28
# Arc:   6.91y
# First observation: 2013/09/13
#  Last observation: 2020/08/12
# Chi-squared of fit:     5.25 DOF:     50 RMS:  0.08
# Min/Max residuals:    -0.16    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.357946E-05  1.903615E-02 -5.493249E-06 -6.972532E-03  2.210126E-02  3.373135E-03
# Covariance matrix:
  2.0461E-13 -3.1998E-14  1.1683E-14 -7.3448E-15  3.2830E-13  1.4677E-13
 -3.1998E-14  6.5045E-14  9.4980E-15 -2.0647E-14  4.0965E-14  4.9891E-13
  1.1683E-14  9.4980E-15  9.4543E-14 -2.4496E-14  4.9361E-14  1.1869E-13
 -7.3448E-15 -2.0647E-14 -2.4496E-14  1.9022E-14 -5.2177E-14 -2.1545E-13
  3.2830E-13  4.0965E-14  4.9361E-14 -5.2177E-14  1.0615E-12  1.1670E-12
  1.4677E-13  4.9891E-13  1.1869E-13 -2.1545E-13  1.1670E-12  5.1337E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.206396  -21.199399   -0.199409    0.140972   -0.976865  2456548.676958
# Heliocentric elements and errors
Epoch:              2456548.5000  =  2013/09/13
Mean Anomaly:           77.30977 +/-     0.032
Argument of Peri:       61.13762 +/-     0.045
Long of Asc Node:      179.90275 +/-     0.000
Inclination:            21.62636 +/-     0.000
Eccentricity:         0.16766103 +/-    0.0001
Semi-Major Axis:     46.64522688 +/-    0.0081
Time of Perihelion: 2431559.9446 +/-      12.2
Perihelion:          38.82464012 +/-    0.0083
Aphelion:            54.46581364 +/-    0.0106
Period (y)              318.5804 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.74465044 +/-    0.0019
Ecliptic Y          -16.36215291 +/-    0.0008
Ecliptic Z            6.45816910 +/-    0.0003
Ecliptic XDOT         0.00134710 +/-    0.0000
Ecliptic YDOT         0.00200325 +/-    0.0000
Ecliptic ZDOT        -0.00079511 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   46.22253659 +/-    0.0018
Geocenter to KBO     45.24621552 +/-    0.0021
# Hcoef:  6.94

The following table shows the complete astrometric record for 13RQ124. 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 (13RQ124) followed by the observatory code and reference code for the source of the astrometry.

2013 09  13.17618  22 29 22.800  -00 39 13.19  22.6i 13RQ124   W84  C~4yQs      
2013 09  13.17618  22 29 22.80   -00 39 13.2   22.7i 13RQ124   W84  C~3clA      
2013 09  13.17897  22 29 22.791  -00 39 13.38  22.8z 13RQ124   W84  C~4yQs      
2013 09  29.15991  22 28 24.366  -00 47 16.97  23.6r 13RQ124   W84  C~4yQs      
2013 09  29.15991  22 28 24.37   -00 47 17.0   23.5r 13RQ124   W84  C~3clA      
2013 09  29.17267  22 28 24.318  -00 47 17.37  23.4i 13RQ124   W84  C~4yQs      
2013 09  29.17267  22 28 24.32   -00 47 17.4   23.3i 13RQ124   W84  C~3clA      
2013 09  30.07779  22 28 21.31   -00 47 44.5   23.3i 13RQ124   W84  C~3clA      
2013 10  10.10787  22 27 50.423  -00 52 38.57  23.7r 13RQ124   W84  C~4yQs      
2013 10  10.10787  22 27 50.42   -00 52 38.6   23.7r 13RQ124   W84  C~3clA      
2013 10  11.08030  22 27 47.716  -00 53 06.34  22.7z 13RQ124   W84  C~4yQs      
2013 10  11.08030  22 27 47.72   -00 53 06.3   23.0z 13RQ124   W84  C~3clA      
2013 10  12.03656  22 27 45.103  -00 53 33.10  24.3i 13RQ124   W84  C~4yQs      
2013 11  23.05373  22 26 54.190  -01 08 39.65  23.7r 13RQ124   W84  C~4yQs      
2013 11  23.05373  22 26 54.19   -01 08 39.6   24.0r 13RQ124   W84  C~3clA      
2016 08  15.22607  22 45 02.035  -00 20 06.25  23.0z 13RQ124   W84  C~4yQs      
2016 09  26.11015  22 42 18.939  -00 39 56.21  23.6r 13RQ124   W84  C~4yQs      
2016 09  26.11015  22 42 18.94   -00 39 56.2   23.8r 13RQ124   W84  C~3clA      
2016 09  26.11153  22 42 18.934  -00 39 56.44  23.7i 13RQ124   W84  C~4yQs      
2016 09  26.11153  22 42 18.93   -00 39 56.5   23.8i 13RQ124   W84  C~3clA      
2016 10  05.08663  22 41 48.346  -00 44 22.72  23.8i 13RQ124   W84  C~4yQs      
2016 10  05.08801  22 41 48.347  -00 44 22.59  23.6r 13RQ124   W84  C~4yQs      
2016 10  05.08801  22 41 48.34   -00 44 22.6   23.8r 13RQ124   W84  C~3clA      
2017 09  27.12890  22 46 47.601  -00 38 21.42  23.9r 13RQ124   W84  C~4yQs      
2018 10  01.21618  22 51 03.930  -00 38 15.70  23.0z 13RQ124   W84  C~4yQs      
2020 08  12.275430 23 03 07.348  -00 11 10.35  23.6G 13RQ124   G37  C~441U      
2020 08  12.334730 23 03 07.127  -00 11 11.47        13RQ124   G37  C~441U      
2020 08  12.409080 23 03 06.866  -00 11 13.31        13RQ124   G37  C~441U      

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    -0.03       0.00     0.10
     2   0.0000      0.00    -0.03       0.00     0.09
     3   0.0000      0.00    -0.00       0.00    -0.01
     4   0.0438      0.00     0.06       0.00    -0.02
     5   0.0438      0.00     0.00       0.00     0.01
     6   0.0438      0.00    -0.03       0.00    -0.04
     7   0.0438      0.00    -0.06       0.00    -0.01
     8   0.0463      0.00     0.14       0.00    -0.01
     9   0.0737      0.00     0.04       0.00    -0.07
    10   0.0737      0.00     0.09       0.00    -0.04
    11   0.0764      0.00     0.11       0.00    -0.12
    12   0.0764      0.00     0.05       0.00    -0.16
    13   0.0790      0.00    -0.08       0.00     0.10
    14   0.1941      0.00    -0.10       0.00     0.11
    15   0.1941      0.00    -0.10       0.00     0.06
    16   2.9214      0.00    -0.09       0.00     0.04
    17   3.0361      0.00     0.06       0.00     0.15
    18   3.0361      0.00     0.05       0.00     0.14
    19   3.0361      0.00    -0.01       0.00    -0.11
    20   3.0361      0.00     0.05       0.00    -0.05
    21   3.0607      0.00    -0.03       0.00    -0.13
    22   3.0607      0.00    -0.06       0.00     0.03
    23   3.0607      0.00     0.05       0.00     0.04
    24   4.0382      0.00     0.09       0.00    -0.01
    25   5.0487      0.00    -0.05       0.00     0.01
    26   6.9133      0.00     0.07       0.00    -0.12
    27   6.9135      0.00    -0.08       0.00     0.11
    28   6.9137      0.00    -0.01       0.00    -0.02

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.

13RQ124    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        46.849    46.849    46.849
ecceobj         0.167     0.167     0.167
incobj         21.570    21.570    21.570
qmin           38.226    38.244    38.213
qmax           55.799    55.812    55.778
amean          46.816    46.816    46.815
amin           46.409    46.415    46.417
amax           47.270    47.281    47.271
emean           0.166     0.166     0.166
emin            0.153     0.152     0.153
emax            0.181     0.181     0.181
imean          21.412    21.412    21.412
imin           21.026    21.026    21.026
imax           21.813    21.797    21.802
excite_mean     0.401     0.401     0.401
fracstop        1.000     1.000     1.000
cjmean          2.933     2.933     2.933

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       185.8     185.8     185.9
kozaiamp        180.0     180.0     179.9