Orbit Fit and Astrometric record for 13RL109

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: 13RL109   
# Created Fri Dec  3 02:11:48 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     37 observations of     37
# Arc:   5.02y
# First observation: 2013/09/10
#  Last observation: 2018/09/17
# Chi-squared of fit:     7.86 DOF:     68 RMS:  0.08
# Min/Max residuals:    -0.23    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.668369E-05  2.983640E-02 -3.762354E-06 -5.927463E-03  2.828265E-02  5.318850E-03
# Covariance matrix:
  1.4313E-13 -6.7668E-14  4.9028E-15  6.3592E-15  2.0422E-13 -3.2441E-13
 -6.7668E-14  1.9631E-13  4.9179E-15 -3.7219E-14 -4.8589E-14  1.6021E-12
  4.9028E-15  4.9179E-15  7.5315E-14 -2.2316E-14  1.9514E-14  5.2028E-14
  6.3592E-15 -3.7219E-14 -2.2316E-14  2.0669E-14 -6.8132E-16 -3.2977E-13
  2.0422E-13 -4.8589E-14  1.9514E-14 -6.8132E-16  6.6174E-13 -1.4209E-13
 -3.2441E-13  1.6021E-12  5.2028E-14 -3.2977E-13 -1.4209E-13  1.4120E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    8.934466  -23.930583   -0.194517    0.153660   -0.976898  2456545.565778
# Heliocentric elements and errors
Epoch:              2456546.5000  =  2013/09/11
Mean Anomaly:           51.82758 +/-     0.019
Argument of Peri:       69.33492 +/-     0.024
Long of Asc Node:      193.61315 +/-     0.001
Inclination:            14.18163 +/-     0.000
Eccentricity:         0.19956574 +/-    0.0001
Semi-Major Axis:     40.10195813 +/-    0.0065
Time of Perihelion: 2443192.6900 +/-       6.0
Perihelion:          32.09898137 +/-    0.0078
Aphelion:            48.10493489 +/-    0.0097
Period (y)              253.9549 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.90860088 +/-    0.0009
Ecliptic Y          -14.38830705 +/-    0.0004
Ecliptic Z            5.49103059 +/-    0.0002
Ecliptic XDOT         0.00171175 +/-    0.0000
Ecliptic YDOT         0.00239635 +/-    0.0000
Ecliptic ZDOT        -0.00048673 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.33377224 +/-    0.0008
Geocenter to KBO     35.35729318 +/-    0.0010
# Hcoef:  7.64

The following table shows the complete astrometric record for 13RL109. 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 (13RL109) followed by the observatory code and reference code for the source of the astrometry.

2013 09  10.06500  22 18 15.701  -00 58 06.69  23.8g 13RL109   W84  C~4yQp      
2013 09  10.06500  22 18 15.70   -00 58 06.7   23.9g 13RL109   W84  C~3cl8      
2013 09  13.17339  22 18 00.778  -00 59 57.44  23.0i 13RL109   W84  C~4yQp      
2013 09  13.17339  22 18 00.78   -00 59 57.5   23.1i 13RL109   W84  C~3cl8      
2013 09  13.17477  22 18 00.773  -00 59 57.60  22.7z 13RL109   W84  C~4yQp      
2013 09  13.17477  22 18 00.77   -00 59 57.6   23.2z 13RL109   W84  C~3cl8      
2013 09  23.04584  22 17 15.840  -01 05 51.86  23.7g 13RL109   W84  C~4yQp      
2013 09  23.04584  22 17 15.84   -01 05 51.9   23.8g 13RL109   W84  C~3cl8      
2013 09  30.05529  22 16 46.831  -01 10 01.64  23.1i 13RL109   W84  C~4yQp      
2013 09  30.05529  22 16 46.83   -01 10 01.6   22.9i 13RL109   W84  C~3cl8      
2013 10  10.09338  22 16 10.786  -01 15 47.20  23.2r 13RL109   W84  C~4yQp      
2013 10  10.09338  22 16 10.79   -01 15 47.2   23.4r 13RL109   W84  C~3cl8      
2013 10  11.07886  22 16 07.650  -01 16 20.06  22.4z 13RL109   W84  C~4yQp      
2013 10  11.07886  22 16 07.65   -01 16 20.0   22.7z 13RL109   W84  C~3cl8      
2013 10  12.04497  22 16 04.653  -01 16 51.78  23.1i 13RL109   W84  C~4yQp      
2013 10  12.04497  22 16 04.65   -01 16 51.8   23.2i 13RL109   W84  C~3cl8      
2013 10  13.027558 22 16 01.67   -01 17 23.9   22.4z 13RL109   W84  C~36Su      
2013 10  13.02808  22 16 01.678  -01 17 24.05  23.3z 13RL109   W84  C~4yQp      
2013 11  23.05232  22 15 18.291  -01 33 51.89  23.4r 13RL109   W84  C~4yQp      
2013 11  23.05232  22 15 18.29   -01 33 51.9   23.6r 13RL109   W84  C~3cl8      
2016 08  24.235579 22 39 50.93   +00 05 13.5   22.9i 13RL109   W84  C~35bX      
2016 08  24.23611  22 39 50.945  +00 05 13.19  23.2i 13RL109   W84  C~4yQp      
2016 08  26.220741 22 39 41.16   +00 04 10.3   23.0r 13RL109   W84  C~35bX      
2016 08  26.22266  22 39 41.153  +00 04 10.18  23.7g 13RL109   W84  C~4yQp      
2016 08  26.22266  22 39 41.15   +00 04 10.2   23.9g 13RL109   W84  C~3cl8      
2016 09  26.10604  22 37 13.168  -00 13 47.28  23.4r 13RL109   W84  C~4yQp      
2016 09  26.10604  22 37 13.17   -00 13 47.3   23.4r 13RL109   W84  C~3cl8      
2016 09  26.10742  22 37 13.163  -00 13 47.49  23.0i 13RL109   W84  C~4yQp      
2016 09  26.10742  22 37 13.16   -00 13 47.5   23.1i 13RL109   W84  C~3cl8      
2016 09  26.10879  22 37 13.136  -00 13 47.51  23.4g 13RL109   W84  C~4yQp      
2016 09  26.10879  22 37 13.15   -00 13 47.4   24.0g 13RL109   W84  C~3cl8      
2017 09  27.10811  22 43 45.157  +00 03 25.02  22.4z 13RL109   W84  C~4yQp      
2017 09  27.108958 22 43 45.17   +00 03 25.0   23.0i 13RL109   W84  C~35bX      
2017 09  27.10949  22 43 45.164  +00 03 25.04  22.8i 13RL109   W84  C~4yQp      
2017 09  27.12890  22 43 45.070  +00 03 24.43  23.6r 13RL109   W84  C~4yQp      
2018 09  17.24663  22 51 03.122  +00 26 58.10  23.1r 13RL109   W84  C~4yQp      
2018 09  17.24806  22 51 03.102  +00 26 58.06  24.3g 13RL109   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    -0.03       0.00     0.09
     2   0.0000      0.00    -0.02       0.00     0.10
     3   0.0085      0.00     0.08       0.00     0.03
     4   0.0085      0.00     0.11       0.00    -0.03
     5   0.0085      0.00     0.06       0.00    -0.08
     6   0.0085      0.00     0.11       0.00    -0.08
     7   0.0355      0.00     0.02       0.00     0.03
     8   0.0355      0.00     0.02       0.00    -0.01
     9   0.0547      0.00    -0.10       0.00     0.03
    10   0.0547      0.00    -0.09       0.00    -0.01
    11   0.0822      0.00     0.01       0.00    -0.00
    12   0.0822      0.00    -0.05       0.00    -0.00
    13   0.0849      0.00    -0.03       0.00    -0.05
    14   0.0849      0.00    -0.03       0.00    -0.11
    15   0.0876      0.00    -0.01       0.00     0.04
    16   0.0876      0.00    -0.05       0.00     0.02
    17   0.0902      0.00    -0.13       0.00     0.07
    18   0.0902      0.00     0.01       0.00    -0.07
    19   0.2026      0.00     0.10       0.00     0.05
    20   0.2026      0.00     0.11       0.00     0.06
    21   2.9546      0.00    -0.16       0.00     0.28
    22   2.9546      0.00     0.11       0.00    -0.02
    23   2.9600      0.00    -0.00       0.00    -0.04
    24   2.9600      0.00    -0.01       0.00    -0.07
    25   2.9600      0.00     0.04       0.00    -0.09
    26   3.0446      0.00     0.10       0.00     0.04
    27   3.0446      0.00     0.07       0.00     0.06
    28   3.0446      0.00     0.04       0.00    -0.11
    29   3.0446      0.00     0.08       0.00    -0.10
    30   3.0446      0.00    -0.02       0.00     0.04
    31   3.0446      0.00    -0.23       0.00    -0.07
    32   4.0467      0.00    -0.11       0.00    -0.05
    33   4.0467      0.00     0.15       0.00    -0.04
    34   4.0467      0.00     0.09       0.00     0.02
    35   4.0467      0.00    -0.02       0.00     0.11
    36   5.0190      0.00     0.08       0.00     0.01
    37   5.0190      0.00    -0.12       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.

13RL109    quality flag:2

Type:       CENTAURR  SCATNEAR  SCATNEAR

axisobj        40.257    40.258    40.257
ecceobj         0.201     0.201     0.201
incobj         14.157    14.157    14.157
qmin           29.565    31.427    30.396
qmax           62.958    50.315    54.483
amean          41.470    40.902    39.554
amin           38.723    39.450    36.676
amax           47.036    41.761    43.082
emean           0.234     0.178     0.185
emin            0.169     0.136     0.140
emax            0.346     0.224     0.271
imean          11.167    11.684    12.541
imin            7.850     5.686     9.675
imax           14.758    15.237    14.927
excite_mean     0.307     0.271     0.286
fracstop        0.652     1.000     1.000
cjmean          2.964     2.984     2.961

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       190.3     181.0     181.6
kozaiamp        180.0     180.0     179.9