Orbit Fit and Astrometric record for 13RG124

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: 13RG124   
# Created Sat Dec  4 02:11:51 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     38 observations of     38
# Arc:   5.17y
# First observation: 2013/09/09
#  Last observation: 2018/11/09
# Chi-squared of fit:    24.45 DOF:     70 RMS:  0.14
# Min/Max residuals:    -0.51    0.34
# Exact a, adot, b, bdot, g, gdot:
  1.846360E-05  3.165273E-02  5.605305E-06  9.449079E-03  2.615922E-02 -1.353190E-04
# Covariance matrix:
  1.7615E-13 -1.1914E-13  1.4405E-14 -3.6465E-14  2.2676E-14 -6.6583E-13
 -1.1914E-13  1.7037E-13 -4.2237E-14  6.2648E-14  3.1969E-14  1.1782E-12
  1.4405E-14 -4.2237E-14  1.4278E-13 -4.9594E-14 -4.9437E-14 -2.8893E-13
 -3.6465E-14  6.2648E-14 -4.9594E-14  4.1037E-14 -1.9011E-16  4.8479E-13
  2.2676E-14  3.1969E-14 -4.9437E-14 -1.9011E-16  2.0092E-13  9.3625E-14
 -6.6583E-13  1.1782E-12 -2.8893E-13  4.8479E-13  9.3625E-14  9.0430E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -41.646689  -29.864583   -0.280807   -0.643370   -0.723582  2456544.649528
# Heliocentric elements and errors
Epoch:              2456544.5000  =  2013/09/09
Mean Anomaly:            0.23229 +/-     0.003
Argument of Peri:      287.69719 +/-     0.014
Long of Asc Node:       35.63018 +/-     0.000
Inclination:            43.51571 +/-     0.000
Eccentricity:         0.56926306 +/-    0.0001
Semi-Major Axis:     90.43550963 +/-    0.0190
Time of Perihelion: 2456341.8082 +/-       2.8
Perihelion:          38.95391449 +/-    0.0112
Aphelion:           141.91710477 +/-    0.0307
Period (y)              860.0361 +/-      0.27
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           25.75200537 +/-    0.0004
Ecliptic Y          -14.45995777 +/-    0.0002
Ecliptic Z          -25.40333082 +/-    0.0004
Ecliptic XDOT         0.00220418 +/-    0.0000
Ecliptic YDOT         0.00254975 +/-    0.0000
Ecliptic ZDOT         0.00074855 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.95619322 +/-    0.0004
Geocenter to KBO     38.22748487 +/-    0.0007
# Hcoef:  7.20

The following table shows the complete astrometric record for 13RG124. 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 (13RG124) followed by the observatory code and reference code for the source of the astrometry.

2013 09  09.14875  23 32 52.522  -49 15 46.24  24.1g 13RG124   W84  C~4yQr      
2013 09  13.25558  23 32 22.200  -49 16 47.52  23.3r 13RG124   W84  C~4yQr      
2013 09  13.25558  23 32 22.20   -49 16 47.5   23.4r 13RG124   W84  C~3clA      
2013 10  04.10930  23 29 51.273  -49 16 48.95  23.8g 13RG124   W84  C~4yQr      
2013 10  14.10689  23 28 45.523  -49 13 39.14  22.6z 13RG124   W84  C~4yQr      
2013 10  14.10689  23 28 45.53   -49 13 39.1   22.8z 13RG124   W84  C~3clA      
2013 12  23.06966  23 26 18.444  -48 04 32.74  22.9r 13RG124   W84  C~4yQr      
2013 12  23.06966  23 26 18.45   -48 04 32.7   22.9r 13RG124   W84  C~3clA      
2014 08  22.26146  23 42 23.587  -47 41 16.77  23.3g 13RG124   W84  C~4yQr      
2014 08  22.26146  23 42 23.59   -47 41 16.8   23.4g 13RG124   W84  C~3clA      
2014 11  14.16750  23 33 48.790  -47 28 47.76  23.0i 13RG124   W84  C~4yQr      
2014 11  14.16750  23 33 48.79   -47 28 47.8   23.3i 13RG124   W84  C~3clA      
2014 11  14.16891  23 33 48.777  -47 28 47.78  22.8r 13RG124   W84  C~4yQr      
2014 11  14.16891  23 33 48.78   -47 28 47.8   22.8r 13RG124   W84  C~3clA      
2015 08  18.26307  23 49 47.079  -46 10 26.69  23.3r 13RG124   W84  C~4yQr      
2015 08  21.26336  23 49 29.382  -46 12 27.60  23.0i 13RG124   W84  C~4yQs      
2015 08  21.26475  23 49 29.421  -46 12 27.56  24.2g 13RG124   W84  C~4yQs      
2015 09  02.24718  23 48 13.144  -46 19 18.08  23.2z 13RG124   W84  C~4yQs      
2015 09  02.24718  23 48 13.14   -46 19 18.1   23.1z 13RG124   W84  C~3clA      
2016 09  26.18203  23 52 04.024  -44 57 32.38  22.7r 13RG124   W84  C~4yQs      
2016 09  26.18203  23 52 04.02   -44 57 32.5   23.1r 13RG124   W84  C~3clA      
2016 09  26.18341  23 52 03.988  -44 57 32.31  23.1i 13RG124   W84  C~4yQs      
2016 09  26.18477  23 52 04.017  -44 57 32.21  23.9g 13RG124   W84  C~4yQs      
2016 10  21.08620  23 49 24.388  -44 53 11.58  22.8g 13RG124   W84  C~4yQs      
2016 12  06.11092  23 46 49.715  -44 15 00.71  22.7z 13RG124   W84  C~4yQs      
2016 12  19.04288  23 46 54.029  -43 59 10.49  22.9i 13RG124   W84  C~4yQs      
2016 12  19.04288  23 46 54.02   -43 59 10.4   23.4i 13RG124   W84  C~3clA      
2017 10  15.26451  23 56 23.690  -43 26 34.18  23.2r 13RG124   W84  C~4yQs      
2017 10  20.09678  23 55 54.938  -43 25 05.82  23.8g 13RG124   W84  C~4yQs      
2017 10  20.09816  23 55 54.926  -43 25 05.42  23.2i 13RG124   W84  C~4yQs      
2017 10  22.24512  23 55 42.629  -43 24 16.96  23.1i 13RG124   W84  C~4yQs      
2017 10  28.13345  23 55 10.675  -43 21 36.00  22.9i 13RG124   W84  C~4yQs      
2017 10  29.16706  23 55 05.365  -43 21 03.74  22.9z 13RG124   W84  C~4yQs      
2017 11  08.11525  23 54 19.114  -43 14 51.28  23.5r 13RG124   W84  C~4yQs      
2017 11  09.07689  23 54 15.151  -43 14 09.52  23.0g 13RG124   W84  C~4yQs      
2017 11  09.07825  23 54 15.162  -43 14 09.44  23.8g 13RG124   W84  C~4yQs      
2018 10  18.22126  00 02 11.824  -41 55 59.67  22.7z 13RG124   W84  C~4yQs      
2018 11  09.01895  00 00 20.232  -41 45 32.28  22.9i 13RG124   W84  C~4yQs      

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     0.16       0.00     0.09
     2   0.0112      0.00    -0.03       0.00    -0.01
     3   0.0112      0.00    -0.03       0.00     0.01
     4   0.0683      0.00    -0.14       0.00    -0.12
     5   0.0957      0.00     0.21       0.00     0.08
     6   0.0957      0.00     0.11       0.00     0.04
     7   0.2873      0.00    -0.12       0.00    -0.05
     8   0.2873      0.00    -0.03       0.00    -0.01
     9   0.9503      0.00     0.19       0.00    -0.18
    10   0.9503      0.00     0.14       0.00    -0.15
    11   1.1801      0.00     0.07       0.00     0.03
    12   1.1801      0.00     0.07       0.00     0.07
    13   1.1801      0.00    -0.02       0.00    -0.05
    14   1.1801      0.00    -0.06       0.00    -0.03
    15   1.9387      0.00    -0.11       0.00    -0.01
    16   1.9469      0.00    -0.51       0.00     0.14
    17   1.9469      0.00     0.20       0.00     0.23
    18   1.9797      0.00    -0.08       0.00     0.05
    19   1.9797      0.00    -0.02       0.00     0.07
    20   3.0473      0.00     0.10       0.00    -0.08
    21   3.0473      0.00     0.16       0.00     0.04
    22   3.0473      0.00    -0.24       0.00     0.11
    23   3.0473      0.00     0.34       0.00     0.22
    24   3.1155      0.00    -0.15       0.00    -0.02
    25   3.2415      0.00    -0.16       0.00    -0.15
    26   3.2769      0.00    -0.10       0.00    -0.01
    27   3.2769      0.00     0.04       0.00    -0.10
    28   4.0989      0.00    -0.05       0.00     0.15
    29   4.1121      0.00    -0.00       0.00    -0.41
    30   4.1121      0.00    -0.06       0.00    -0.04
    31   4.1180      0.00     0.15       0.00    -0.10
    32   4.1341      0.00     0.04       0.00     0.15
    33   4.1369      0.00     0.24       0.00     0.04
    34   4.1642      0.00    -0.08       0.00     0.02
    35   4.1668      0.00    -0.21       0.00     0.09
    36   4.1668      0.00     0.04       0.00     0.11
    37   5.1063      0.00     0.17       0.00    -0.17
    38   5.1660      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.

13RG124    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        91.396    91.395    91.397
ecceobj         0.574     0.574     0.574
incobj         43.533    43.533    43.533
qmin           38.146    38.147    38.146
qmax          147.221   147.254   147.140
amean          91.020    91.059    90.998
amin           89.675    89.662    89.657
amax           93.145    93.159    93.122
emean           0.558     0.558     0.558
emin            0.542     0.543     0.542
emax            0.581     0.581     0.580
imean          43.707    43.709    43.726
imin           42.831    42.831    42.831
imax           44.480    44.493    44.520
excite_mean     0.888     0.888     0.888
fracstop        1.000     1.000     1.000
cjmean          2.415     2.415     2.415

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       309.5     295.5     295.5
kozaiamp        180.0     180.0     180.0