Orbit Fit and Astrometric record for 13RS124

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: 13RS124   
# Created Thu Dec  9 02:11:46 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     29 observations of     29
# Arc:   7.03y
# First observation: 2013/09/10
#  Last observation: 2020/09/21
# Chi-squared of fit:     7.56 DOF:     52 RMS:  0.09
# Min/Max residuals:    -0.30    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.806560E-05  3.352827E-02 -3.311400E-06 -5.228725E-03  2.896197E-02 -2.412105E-03
# Covariance matrix:
  9.7935E-14 -3.4829E-14 -1.4364E-15  2.5134E-15  1.6287E-14 -8.7744E-14
 -3.4829E-14  1.0049E-13  5.5674E-15 -1.3595E-14  1.2995E-13  4.1900E-13
 -1.4364E-15  5.5674E-15  8.6428E-14 -2.1343E-14  6.0539E-15  2.7386E-14
  2.5134E-15 -1.3595E-14 -2.1343E-14  1.3761E-14 -1.8659E-14 -6.4794E-14
  1.6287E-14  1.2995E-13  6.0539E-15 -1.8659E-14  3.3549E-13  5.3498E-13
 -8.7744E-14  4.1900E-13  2.7386E-14 -6.4794E-14  5.3498E-13  2.0184E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -12.707595   14.277271    0.454570   -0.197754   -0.877422  2456545.838648
# Heliocentric elements and errors
Epoch:              2456546.5000  =  2013/09/11
Mean Anomaly:          345.44351 +/-     0.006
Argument of Peri:      259.34493 +/-     0.010
Long of Asc Node:      140.06615 +/-     0.001
Inclination:            15.28751 +/-     0.000
Eccentricity:         0.25262059 +/-    0.0001
Semi-Major Axis:     46.48963672 +/-    0.0048
Time of Perihelion: 2461228.0194 +/-      17.1
Perihelion:          34.74539733 +/-    0.0047
Aphelion:            58.23387611 +/-    0.0067
Period (y)              316.9877 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           33.62524892 +/-    0.0007
Ecliptic Y            8.09089556 +/-    0.0002
Ecliptic Z           -7.59545880 +/-    0.0002
Ecliptic XDOT        -0.00110877 +/-    0.0000
Ecliptic YDOT         0.00298879 +/-    0.0000
Ecliptic ZDOT        -0.00043188 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.40924812 +/-    0.0006
Geocenter to KBO     34.52811751 +/-    0.0007
# Hcoef:  8.02

The following table shows the complete astrometric record for 13RS124. 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 (13RS124) followed by the observatory code and reference code for the source of the astrometry.

2013 09  10.33787  01 12 13.840  -06 05 31.94  24.2g 13RS124   W84  C~4yQt      
2013 09  10.33787  01 12 13.84   -06 05 31.9   24.2g 13RS124   W84  C~3clA      
2013 09  10.33926  01 12 13.833  -06 05 32.08  23.4r 13RS124   W84  C~4yQt      
2013 09  10.33926  01 12 13.83   -06 05 32.1   23.7r 13RS124   W84  C~3clA      
2013 09  10.34064  01 12 13.825  -06 05 32.24  23.5i 13RS124   W84  C~4yQt      
2013 09  10.34064  01 12 13.83   -06 05 32.2   23.7i 13RS124   W84  C~3clA      
2013 09  11.27911  01 12 09.875  -06 06 09.77  23.9g 13RS124   W84  C~4yQt      
2013 09  11.28575  01 12 09.864  -06 06 09.97  23.3r 13RS124   W84  C~4yQt      
2013 09  11.28575  01 12 09.86   -06 06 10.0   23.7r 13RS124   W84  C~3clA      
2013 09  11.29077  01 12 09.834  -06 06 10.15  22.8i 13RS124   W84  C~4yQt      
2013 09  11.29077  01 12 09.83   -06 06 10.1   23.4i 13RS124   W84  C~3clA      
2013 10  04.19586  01 10 21.211  -06 20 55.86  24.8g 13RS124   W84  C~4yQt      
2013 10  04.21546  01 10 21.100  -06 20 56.42  23.4r 13RS124   W84  C~4yQt      
2013 10  04.21546  01 10 21.10   -06 20 56.4   23.4r 13RS124   W84  C~3clA      
2013 10  13.18826  01 09 34.98   -06 26 05.7   22.4z 13RS124   W84  C~3clA      
2015 09  04.28245  01 27 51.618  -05 04 06.35  22.9i 13RS124   W84  C~4yQt      
2015 09  04.28382  01 27 51.628  -05 04 06.41  23.2z 13RS124   W84  C~4yQt      
2016 08  16.42183  01 36 15.708  -04 23 44.59  23.0r 13RS124   W84  C~4yQt      
2016 08  16.42183  01 36 15.71   -04 23 44.6   23.2r 13RS124   W84  C~3clA      
2016 11  07.14009  01 30 22.486  -05 11 34.47  23.2r 13RS124   W84  C~4yQt      
2016 11  07.14009  01 30 22.49   -05 11 34.5   23.1r 13RS124   W84  C~3clA      
2016 11  07.14282  01 30 22.461  -05 11 34.57  23.0i 13RS124   W84  C~4yQt      
2016 11  07.14282  01 30 22.46   -05 11 34.5   23.2i 13RS124   W84  C~3clA      
2016 12  07.06735  01 28 25.455  -05 16 12.43  23.0i 13RS124   W84  C~4yQt      
2016 12  19.10622  01 27 58.988  -05 14 48.44  23.8r 13RS124   W84  C~4yQt      
2016 12  19.10622  01 27 58.99   -05 14 48.4   23.8r 13RS124   W84  C~3clA      
2016 12  20.06751  01 27 57.469  -05 14 36.77  24.7g 13RS124   W84  C~4yQt      
2020 09  21.438390 02 05 05.617  -02 45 37.43  23.1G 13RS124   G37  C~49w5      
2020 09  21.477990 02 05 05.449  -02 45 38.88        13RS124   G37  C~49w5      

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     0.01       0.00     0.11
     2   0.0000      0.00     0.01       0.00     0.15
     3   0.0000      0.00    -0.01       0.00     0.02
     4   0.0000      0.00    -0.05       0.00     0.00
     5   0.0000      0.00     0.04       0.00    -0.04
     6   0.0000      0.00    -0.04       0.00    -0.08
     7   0.0026      0.00    -0.15       0.00    -0.06
     8   0.0026      0.00     0.05       0.00    -0.02
     9   0.0026      0.00     0.11       0.00     0.01
    10   0.0026      0.00    -0.07       0.00     0.08
    11   0.0026      0.00    -0.01       0.00     0.03
    12   0.0653      0.00     0.11       0.00    -0.09
    13   0.0654      0.00    -0.03       0.00     0.08
    14   0.0654      0.00    -0.03       0.00     0.06
    15   0.0899      0.00     0.07       0.00    -0.09
    16   1.9821      0.00    -0.21       0.00    -0.04
    17   1.9821      0.00     0.01       0.00    -0.05
    18   2.9325      0.00     0.04       0.00     0.13
    19   2.9325      0.00     0.01       0.00     0.14
    20   3.1589      0.00     0.20       0.00    -0.04
    21   3.1589      0.00     0.14       0.00    -0.01
    22   3.1589      0.00    -0.05       0.00     0.02
    23   3.1589      0.00    -0.04       0.00    -0.05
    24   3.2409      0.00     0.09       0.00    -0.15
    25   3.2738      0.00     0.12       0.00    -0.05
    26   3.2738      0.00     0.09       0.00    -0.09
    27   3.2765      0.00    -0.30       0.00     0.02
    28   7.0311      0.00    -0.02       0.00     0.01
    29   7.0312      0.00    -0.03       0.00     0.08

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.

13RS124    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        46.785    46.785    46.785
ecceobj         0.256     0.256     0.256
incobj         15.264    15.264    15.264
qmin           33.722    34.033    34.012
qmax           59.541    59.614    59.098
amean          46.366    46.429    46.255
amin           45.615    45.863    45.732
amax           47.102    47.089    46.962
emean           0.250     0.247     0.245
emin            0.230     0.226     0.228
emax            0.270     0.267     0.264
imean          14.177    14.544    14.503
imin           13.153    13.615    13.559
imax           15.189    15.458    15.514
excite_mean     0.350     0.352     0.351
fracstop        1.000     1.000     1.000
cjmean          2.979     2.979     2.978

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       177.5     177.4     182.7
kozaiamp        180.0     180.0     180.0