Orbit Fit and Astrometric record for 13RD124

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: 13RD124   
# Created Fri Dec  3 02:11:49 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     34 observations of     34
# Arc:   6.94y
# First observation: 2013/09/03
#  Last observation: 2020/08/12
# Chi-squared of fit:     9.43 DOF:     62 RMS:  0.09
# Min/Max residuals:    -0.36    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.557866E-05  2.650283E-02 -8.258555E-08 -1.031214E-03  2.572795E-02  1.423071E-03
# Covariance matrix:
  2.0109E-13 -3.6478E-14  1.0877E-14  5.6530E-16  1.8896E-13 -1.8667E-14
 -3.6478E-14  1.1734E-13  1.8671E-14 -4.5396E-15  2.8264E-13  6.9591E-13
  1.0877E-14  1.8671E-14  1.3712E-13 -3.0050E-14  8.5629E-14  1.2566E-13
  5.6530E-16 -4.5396E-15 -3.0050E-14  9.9524E-15 -1.1134E-14 -2.9260E-14
  1.8896E-13  2.8264E-13  8.5629E-14 -1.1134E-14  1.3696E-12  1.9119E-12
 -1.8667E-14  6.9591E-13  1.2566E-13 -2.9260E-14  1.9119E-12  4.5129E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   15.624789  -40.416186   -0.359886    0.254202   -0.908661  2456538.618878
# Heliocentric elements and errors
Epoch:              2456538.5000  =  2013/09/03
Mean Anomaly:           37.75080 +/-     0.065
Argument of Peri:       53.54923 +/-     0.082
Long of Asc Node:      221.32940 +/-     0.001
Inclination:            15.43172 +/-     0.000
Eccentricity:         0.09322890 +/-    0.0001
Semi-Major Axis:     42.77471132 +/-    0.0074
Time of Perihelion: 2445823.2403 +/-      18.8
Perihelion:          38.78687193 +/-    0.0074
Aphelion:            46.76255071 +/-    0.0087
Period (y)              279.7621 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.45081683 +/-    0.0013
Ecliptic Y          -24.60320567 +/-    0.0011
Ecliptic Z           10.46863351 +/-    0.0005
Ecliptic XDOT         0.00195586 +/-    0.0000
Ecliptic YDOT         0.00203244 +/-    0.0000
Ecliptic ZDOT        -0.00006476 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.77760090 +/-    0.0012
Geocenter to KBO     38.86823877 +/-    0.0018
# Hcoef:  6.73

The following table shows the complete astrometric record for 13RD124. 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 (13RD124) followed by the observatory code and reference code for the source of the astrometry.

2013 09  03.11810  21 08 37.697  -00 04 18.10  23.4g 13RD124   W84  C~4yQr      
2013 09  03.11810  21 08 37.70   -00 04 18.1   23.5g 13RD124   W84  C~3cl9      
2013 09  08.07963  21 08 17.457  -00 06 49.51  23.0g 13RD124   W84  C~4yQr      
2013 09  10.13827  21 08 09.42   -00 07 53.5   22.6r 13RD124   W84  C~3cl9      
2013 09  23.03844  21 07 24.932  -00 14 41.94  23.3g 13RD124   W84  C~4yQr      
2013 09  23.03844  21 07 24.93   -00 14 41.9   23.3g 13RD124   W84  C~3cl9      
2013 09  23.17140  21 07 24.499  -00 14 45.95  22.2z 13RD124   W84  C~4yQr      
2014 10  13.05516  21 12 27.480  -00 00 57.40  23.1g 13RD124   W84  C~4yQr      
2014 10  13.05516  21 12 27.48   -00 00 57.4   23.2g 13RD124   W84  C~3cl9      
2014 10  13.05654  21 12 27.487  -00 00 57.42  22.4r 13RD124   W84  C~4yQr      
2014 10  13.05654  21 12 27.49   -00 00 57.4   22.6r 13RD124   W84  C~3cl9      
2016 09  08.06276  21 25 43.596  +01 05 07.45  22.3z 13RD124   W84  C~4yQr      
2016 09  08.07101  21 25 43.56   +01 05 07.3   22.6r 13RD124   W84  C~3cl9      
2016 09  08.14481  21 25 43.261  +01 05 04.94  23.3g 13RD124   W84  C~4yQr      
2016 09  08.14481  21 25 43.26   +01 05 05.0   23.6g 13RD124   W84  C~3cl9      
2016 09  30.04507  21 24 26.599  +00 53 12.70  22.9r 13RD124   W84  C~4yQr      
2016 09  30.04507  21 24 26.60   +00 53 12.7   22.9r 13RD124   W84  C~3cl9      
2016 09  30.04645  21 24 26.580  +00 53 12.61  22.5i 13RD124   W84  C~4yQr      
2016 09  30.04645  21 24 26.58   +00 53 12.6   22.7i 13RD124   W84  C~3cl9      
2016 09  30.04784  21 24 26.582  +00 53 12.70  23.6g 13RD124   W84  C~4yQr      
2016 09  30.04784  21 24 26.58   +00 53 12.8   23.6g 13RD124   W84  C~3cl9      
2017 10  10.05789  21 29 47.757  +01 11 38.95  22.5i 13RD124   W84  C~4yQr      
2017 10  10.06888  21 29 47.734  +01 11 38.75  23.2r 13RD124   W84  C~4yQr      
2017 10  11.04334  21 29 45.719  +01 11 07.78  22.8z 13RD124   W84  C~4yQr      
2017 10  11.08775  21 29 45.617  +01 11 06.50  23.4g 13RD124   W84  C~4yQr      
2017 10  27.03276  21 29 24.601  +01 03 15.27  22.5z 13RD124   W84  C~4yQr      
2018 09  29.02606  21 36 01.776  +01 41 22.88  22.7r 13RD124   W84  C~4yQr      
2018 09  29.02744  21 36 01.767  +01 41 22.93  22.4i 13RD124   W84  C~4yQr      
2018 09  29.02883  21 36 01.761  +01 41 22.92  23.1g 13RD124   W84  C~4yQr      
2018 09  29.14696  21 36 01.393  +01 41 19.12  21.0z 13RD124   W84  C~4yQr      
2018 11  27.02481  21 35 29.859  +01 15 56.99  22.9z 13RD124   W84  C~4yQr      
2020 08  12.244020 21 50 50.919  +02 52 08.62  22.7G 13RD124   G37  C~441U      
2020 08  12.293310 21 50 50.688  +02 52 07.50        13RD124   G37  C~441U      
2020 08  12.399200 21 50 50.189  +02 52 05.03        13RD124   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     0.17       0.00    -0.06
     2   0.0000      0.00     0.13       0.00    -0.06
     3   0.0136      0.00     0.10       0.00     0.08
     4   0.0192      0.00     0.08       0.00     0.05
     5   0.0545      0.00    -0.06       0.00    -0.12
     6   0.0545      0.00    -0.03       0.00    -0.16
     7   0.0549      0.00    -0.36       0.00     0.06
     8   1.1087      0.00    -0.05       0.00     0.05
     9   1.1087      0.00    -0.05       0.00     0.05
    10   1.1087      0.00     0.13       0.00     0.09
    11   1.1087      0.00     0.09       0.00     0.07
    12   3.0142      0.00    -0.04       0.00    -0.11
    13   3.0142      0.00    -0.06       0.00     0.00
    14   3.0144      0.00     0.09       0.00     0.03
    15   3.0144      0.00     0.10       0.00    -0.03
    16   3.0744      0.00     0.08       0.00    -0.01
    17   3.0744      0.00     0.06       0.00    -0.01
    18   3.0744      0.00    -0.16       0.00    -0.06
    19   3.0744      0.00    -0.16       0.00    -0.05
    20   3.0744      0.00    -0.10       0.00     0.18
    21   3.0744      0.00    -0.07       0.00     0.08
    22   4.1011      0.00     0.02       0.00    -0.07
    23   4.1012      0.00     0.03       0.00     0.08
    24   4.1038      0.00     0.04       0.00    -0.09
    25   4.1040      0.00    -0.09       0.00     0.03
    26   4.1476      0.00     0.17       0.00    -0.01
    27   5.0702      0.00     0.04       0.00    -0.09
    28   5.0703      0.00    -0.03       0.00     0.00
    29   5.0703      0.00    -0.05       0.00     0.04
    30   5.0706      0.00     0.02       0.00     0.18
    31   5.2318      0.00     0.05       0.00    -0.01
    32   6.9408      0.00    -0.02       0.00    -0.00
    33   6.9409      0.00    -0.00       0.00    -0.01
    34   6.9412      0.00    -0.01       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.

13RD124    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        42.910    42.910    42.909
ecceobj         0.095     0.095     0.095
incobj         15.443    15.443    15.443
qmin           38.178    38.183    38.174
qmax           48.020    48.019    48.020
amean          42.965    42.965    42.965
amin           42.629    42.629    42.627
amax           43.328    43.328    43.328
emean           0.094     0.094     0.094
emin            0.081     0.080     0.081
emax            0.109     0.109     0.109
imean          16.544    16.544    16.544
imin           15.969    15.972    15.973
imax           17.066    17.066    17.066
excite_mean     0.300     0.300     0.300
fracstop        1.000     1.000     1.000
cjmean          2.980     2.980     2.980

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       180.7     180.6     180.8
kozaiamp        179.9     180.0     179.9