Orbit Fit and Astrometric record for 13RX124

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: 13RX124   
# Created Sat Nov 27 02:11:55 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     37 observations of     37
# Arc:   5.15y
# First observation: 2013/09/03
#  Last observation: 2018/10/27
# Chi-squared of fit:    26.61 DOF:     68 RMS:  0.15
# Min/Max residuals:    -0.50    0.46
# Exact a, adot, b, bdot, g, gdot:
  1.885351E-05  3.968668E-02  8.844455E-07  1.053650E-03  3.244830E-02  4.460057E-03
# Covariance matrix:
  1.0895E-13 -5.0560E-14 -5.9008E-16 -9.6782E-15  1.2504E-13 -2.0971E-13
 -5.0560E-14  1.6493E-13 -6.8989E-15 -6.4360E-15  3.0620E-13  9.0083E-13
 -5.9008E-16 -6.8989E-15  9.8674E-14 -2.5505E-14 -5.0324E-14 -2.4976E-14
 -9.6782E-15 -6.4360E-15 -2.5505E-14  2.8917E-14 -2.5222E-13  6.7766E-14
  1.2504E-13  3.0620E-13 -5.0324E-14 -2.5222E-13  4.4566E-12  1.2227E-13
 -2.0971E-13  9.0083E-13 -2.4976E-14  6.7766E-14  1.2227E-13  6.1222E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -30.039423  -66.504502   -0.736994   -0.345556   -0.597708  2456538.519778
# Heliocentric elements and errors
Epoch:              2456538.5000  =  2013/09/03
Mean Anomaly:           25.61081 +/-     0.022
Argument of Peri:      232.16354 +/-     0.032
Long of Asc Node:       20.55510 +/-     0.001
Inclination:            29.47751 +/-     0.000
Eccentricity:         0.24160494 +/-    0.0002
Semi-Major Axis:     39.38851841 +/-    0.0137
Time of Perihelion: 2450114.9706 +/-       6.5
Perihelion:          29.87205781 +/-    0.0129
Aphelion:            48.90497901 +/-    0.0187
Period (y)              247.2081 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           11.58764759 +/-    0.0007
Ecliptic Y          -24.80352768 +/-    0.0016
Ecliptic Z          -15.42745586 +/-    0.0010
Ecliptic XDOT         0.00321240 +/-    0.0000
Ecliptic YDOT         0.00099433 +/-    0.0000
Ecliptic ZDOT        -0.00011128 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   31.42435195 +/-    0.0014
Geocenter to KBO     30.81823218 +/-    0.0020
# Hcoef:  8.12

The following table shows the complete astrometric record for 13RX124. 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 (13RX124) followed by the observatory code and reference code for the source of the astrometry.

2013 09  03.01900  20 12 25.813  -50 48 46.32  23.9g 13RX124   W84  C~4yQt      
2013 09  03.09107  20 12 25.316  -50 48 44.30  23.3r 13RX124   W84  C~4yQt      
2013 09  03.09107  20 12 25.32   -50 48 44.3   23.3r 13RX124   W84  C~3clA      
2013 09  03.09245  20 12 25.284  -50 48 44.27  23.2i 13RX124   W84  C~4yQt      
2013 09  03.09245  20 12 25.28   -50 48 44.3   23.6i 13RX124   W84  C~3clA      
2013 09  04.05880  20 12 18.932  -50 48 16.66  23.1r 13RX124   W84  C~4yQt      
2013 09  04.05880  20 12 18.93   -50 48 16.6   23.2r 13RX124   W84  C~3clA      
2013 09  04.06019  20 12 18.902  -50 48 16.74  22.7i 13RX124   W84  C~4yQt      
2013 09  08.00929  20 11 54.212  -50 46 14.39  23.6g 13RX124   W84  C~4yQt      
2013 09  08.03581  20 11 54.010  -50 46 13.66  22.7r 13RX124   W84  C~4yQt      
2013 09  08.03581  20 11 54.01   -50 46 13.7   23.2r 13RX124   W84  C~3clA      
2013 09  08.03721  20 11 53.979  -50 46 13.55  22.7i 13RX124   W84  C~4yQt      
2013 09  10.11414  20 11 41.935  -50 45 03.18  22.7z 13RX124   W84  C~4yQt      
2013 09  23.09721  20 10 42.134  -50 36 16.44  23.0z 13RX124   W84  C~4yQt      
2015 09  12.02686  20 38 03.603  -49 19 06.07  23.2r 13RX124   W84  C~4yQt      
2015 09  12.02686  20 38 03.62   -49 19 06.1   22.9r 13RX124   W84  C~3clA      
2016 09  09.04275  20 50 45.227  -48 30 01.17  22.5i 13RX124   W84  C~4yQt      
2016 09  09.04275  20 50 45.23   -48 30 01.1   22.5i 13RX124   W84  C~3clA      
2016 09  09.04413  20 50 45.227  -48 30 01.24  22.3z 13RX124   W84  C~4yQt      
2016 09  09.04413  20 50 45.22   -48 30 01.2   22.1z 13RX124   W84  C~3clA      
2016 09  24.00277  20 49 19.845  -48 22 27.05  23.3r 13RX124   W84  C~4yQt      
2016 09  24.00277  20 49 19.85   -48 22 27.0   23.3r 13RX124   W84  C~3clA      
2016 09  24.00414  20 49 19.838  -48 22 26.88  24.0g 13RX124   W84  C~4yQt      
2016 10  02.01331  20 48 47.479  -48 16 55.74  23.5r 13RX124   W84  C~4yQt      
2016 10  02.01331  20 48 47.48   -48 16 55.7   23.2r 13RX124   W84  C~3clA      
2016 10  02.01469  20 48 47.474  -48 16 55.63  23.0i 13RX124   W84  C~4yQt      
2016 10  02.01469  20 48 47.47   -48 16 55.7   23.5i 13RX124   W84  C~3clA      
2016 10  02.01744  20 48 47.472  -48 16 55.49  23.4r 13RX124   W84  C~4yQt      
2016 10  02.01744  20 48 47.47   -48 16 55.5   23.7r 13RX124   W84  C~3clA      
2016 10  02.01882  20 48 47.448  -48 16 55.38  24.2g 13RX124   W84  C~4yQt      
2016 10  06.00390  20 48 35.271  -48 13 49.99  23.2z 13RX124   W84  C~4yQt      
2017 10  16.00038  20 59 58.982  -47 12 58.99  22.8z 13RX124   W84  C~4yQt      
2017 10  16.00176  20 59 58.948  -47 12 58.82  23.5i 13RX124   W84  C~4yQt      
2017 10  16.11534  20 59 58.756  -47 12 52.75  23.0r 13RX124   W84  C~4yQt      
2017 10  16.11672  20 59 58.774  -47 12 52.66  24.2g 13RX124   W84  C~4yQt      
2018 09  29.12259  21 12 08.224  -46 29 09.80  23.3i 13RX124   W84  C~4yQt      
2018 10  27.08961  21 10 59.080  -46 07 00.29  22.6z 13RX124   W84  C~4yQt      

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     0.18       0.00    -0.05
     2   0.0002      0.00     0.12       0.00    -0.03
     3   0.0002      0.00     0.18       0.00    -0.03
     4   0.0002      0.00    -0.22       0.00    -0.04
     5   0.0002      0.00    -0.28       0.00    -0.07
     6   0.0028      0.00     0.19       0.00     0.10
     7   0.0028      0.00     0.22       0.00     0.04
     8   0.0029      0.00    -0.09       0.00    -0.08
     9   0.0137      0.00     0.43       0.00     0.12
    10   0.0137      0.00    -0.16       0.00    -0.05
    11   0.0137      0.00    -0.16       0.00    -0.01
    12   0.0137      0.00    -0.50       0.00     0.05
    13   0.0194      0.00     0.20       0.00     0.08
    14   0.0550      0.00    -0.07       0.00    -0.01
    15   2.0233      0.00     0.20       0.00    -0.03
    16   2.0233      0.00     0.46       0.00    -0.06
    17   3.0172      0.00    -0.14       0.00     0.08
    18   3.0172      0.00    -0.18       0.00     0.01
    19   3.0172      0.00    -0.14       0.00    -0.05
    20   3.0172      0.00    -0.04       0.00    -0.09
    21   3.0581      0.00     0.13       0.00     0.11
    22   3.0581      0.00     0.05       0.00     0.06
    23   3.0581      0.00     0.04       0.00     0.18
    24   3.0801      0.00    -0.05       0.00    -0.01
    25   3.0801      0.00    -0.07       0.00    -0.05
    26   3.0801      0.00    -0.13       0.00    -0.08
    27   3.0801      0.00    -0.07       0.00    -0.01
    28   3.0801      0.00     0.02       0.00     0.00
    29   3.0801      0.00     0.05       0.00     0.01
    30   3.0801      0.00    -0.24       0.00     0.06
    31   3.0910      0.00     0.01       0.00    -0.14
    32   4.1177      0.00     0.36       0.00    -0.08
    33   4.1177      0.00    -0.11       0.00     0.01
    34   4.1180      0.00    -0.16       0.00     0.02
    35   4.1180      0.00     0.14       0.00     0.03
    36   5.0708      0.00     0.12       0.00    -0.01
    37   5.1474      0.00    -0.07       0.00    -0.04

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.

13RX124    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.387    39.387    39.387
ecceobj         0.241     0.241     0.241
incobj         29.510    29.510    29.510
qmin           28.161    28.167    28.160
qmax           51.429    51.401    51.460
amean          39.454    39.454    39.454
amin           38.950    38.950    38.950
amax           40.050    40.049    40.049
emean           0.250     0.250     0.250
emin            0.203     0.203     0.203
emax            0.286     0.286     0.286
imean          29.164    29.157    29.168
imin           28.242    28.242    28.242
imax           30.273    30.297    30.244
excite_mean     0.548     0.548     0.548
fracstop        1.000     1.000     1.000
cjmean          2.697     2.697     2.697

libcent 0       180.0     179.2     180.1
libamp  0       119.4     120.0     119.3
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       271.7     272.6     270.8
kozaiamp         38.7      39.3      38.7