Orbit Fit and Astrometric record for 13SE113

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: 13SE113   
# Created Sat Dec  4 02:12:04 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     23 observations of     23
# Arc:   5.16y
# First observation: 2013/09/30
#  Last observation: 2018/11/27
# Chi-squared of fit:     6.54 DOF:     40 RMS:  0.09
# Min/Max residuals:    -0.23    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.638547E-05  3.290619E-02  9.634166E-06  1.916558E-02  3.121340E-02  4.080583E-04
# Covariance matrix:
  2.6146E-13 -1.3072E-13  2.2717E-14 -4.7107E-14  7.2637E-14 -5.0060E-13
 -1.3072E-13  2.1496E-13 -6.3746E-14  1.2079E-13  7.8753E-14  1.2761E-12
  2.2717E-14 -6.3746E-14  2.1800E-13 -8.9524E-14 -3.7376E-14 -4.1739E-13
 -4.7107E-14  1.2079E-13 -8.9524E-14  9.3370E-14  5.7219E-14  7.8776E-13
  7.2637E-14  7.8753E-14 -3.7376E-14  5.7219E-14  3.8365E-13  5.9458E-13
 -5.0060E-13  1.2761E-12 -4.1739E-13  7.8776E-13  5.9458E-13  8.3197E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -8.700329    4.009699   -0.049323   -0.151230   -0.988921  2456565.670898
# Heliocentric elements and errors
Epoch:              2456566.5000  =  2013/10/01
Mean Anomaly:            2.15424 +/-     0.013
Argument of Peri:      339.92578 +/-     0.022
Long of Asc Node:       18.23729 +/-     0.000
Inclination:            31.27331 +/-     0.000
Eccentricity:         0.24474319 +/-    0.0001
Semi-Major Axis:     43.71143988 +/-    0.0049
Time of Perihelion: 2455934.8417 +/-       3.8
Perihelion:          33.01336253 +/-    0.0049
Aphelion:            54.40951724 +/-    0.0069
Period (y)              289.0020 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.58546129 +/-    0.0006
Ecliptic Y            2.33658509 +/-    0.0000
Ecliptic Z           -4.84591954 +/-    0.0001
Ecliptic XDOT         0.00008097 +/-    0.0000
Ecliptic YDOT         0.00289819 +/-    0.0000
Ecliptic ZDOT         0.00165647 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.02657027 +/-    0.0006
Geocenter to KBO     32.03755442 +/-    0.0006
# Hcoef:  8.29

The following table shows the complete astrometric record for 13SE113. 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 (13SE113) followed by the observatory code and reference code for the source of the astrometry.

2013 09  30.17012  00 28 34.510  -06 23 22.79  24.2r 13SE113   W84  C~52RV      
2013 09  30.17161  00 28 34.494  -06 23 23.01  22.8i 13SE113   W84  C~52RV      
2013 10  04.18090  00 28 10.597  -06 25 03.18  23.7r 13SE113   W84  C~52RV      
2013 11  08.07750  00 25 02.475  -06 34 07.19  24.1r 13SE113   W84  C~52RV      
2013 11  08.07887  00 25 02.474  -06 34 07.19  22.8i 13SE113   W84  C~52RV      
2014 10  03.27155  00 33 27.634  -04 39 03.64  23.1r 13SE113   W84  C~52RV      
2014 11  13.11823  00 29 50.187  -04 49 57.87  23.4r 13SE113   W84  C~52RV      
2014 11  14.06166  00 29 46.325  -04 50 01.35  23.1i 13SE113   W84  C~52RV      
2014 11  15.03684  00 29 42.405  -04 50 03.97  23.8r 13SE113   W84  C~52RV      
2016 08  26.31588  00 47 03.071  -00 52 08.96  23.4i 13SE113   W84  C~52RV      
2016 10  23.13270  00 41 42.813  -01 16 07.71  24.5g 13SE113   W84  C~52RV      
2016 11  06.18492  00 40 29.298  -01 19 56.98  23.7r 13SE113   W84  C~52RV      
2016 11  06.19115  00 40 29.264  -01 19 57.20  23.1i 13SE113   W84  C~52RV      
2017 08  22.33009  00 52 23.044  +00 53 40.14  23.6r 13SE113   W84  C~52RV      
2017 08  22.33147  00 52 23.047  +00 53 40.15  24.5g 13SE113   W84  C~52RV      
2017 09  27.22401  00 49 20.576  +00 39 21.07  23.3r 13SE113   W84  C~52RV      
2017 09  27.22538  00 49 20.569  +00 39 21.05  23.2i 13SE113   W84  C~52RV      
2017 09  27.22675  00 49 20.564  +00 39 21.13  24.2g 13SE113   W84  C~52RV      
2017 10  22.16485  00 46 54.074  +00 29 10.68  22.5z 13SE113   W84  C~52RV      
2018 09  17.31851  00 55 22.413  +02 28 21.22  23.0i 13SE113   W84  C~52RV      
2018 10  18.21019  00 52 22.286  +02 15 24.02  22.3z 13SE113   W84  C~52RV      
2018 11  08.18235  00 50 28.192  +02 08 24.82  23.0r 13SE113   W84  C~52RV      
2018 11  27.08028  00 49 09.158  +02 05 08.40  23.8g 13SE113   W84  C~52RV      

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     0.05       0.00     0.04
     2   0.0000      0.00    -0.06       0.00    -0.14
     3   0.0110      0.00     0.13       0.00     0.03
     4   0.1065      0.00    -0.03       0.00    -0.00
     5   0.1065      0.00     0.05       0.00     0.00
     6   1.0078      0.00    -0.10       0.00     0.03
     7   1.1196      0.00    -0.01       0.00     0.09
     8   1.1222      0.00    -0.01       0.00    -0.06
     9   1.1249      0.00    -0.05       0.00     0.09
    10   2.9053      0.00    -0.03       0.00     0.28
    11   3.0636      0.00    -0.10       0.00    -0.23
    12   3.1020      0.00     0.09       0.00     0.03
    13   3.1020      0.00     0.04       0.00    -0.11
    14   3.8937      0.00    -0.07       0.00    -0.08
    15   3.8937      0.00     0.05       0.00    -0.04
    16   3.9919      0.00     0.03       0.00    -0.02
    17   3.9919      0.00     0.04       0.00    -0.01
    18   3.9919      0.00     0.09       0.00     0.11
    19   4.0602      0.00     0.09       0.00    -0.01
    20   4.9641      0.00    -0.16       0.00     0.19
    21   5.0487      0.00     0.06       0.00     0.03
    22   5.1061      0.00    -0.03       0.00    -0.19
    23   5.1579      0.00     0.05       0.00     0.05

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.

13SE113    quality flag:3

Type:         7:4EEE    7:4EEE    7:4EEE
Type:         7:4EII    7:4EII    7:4EII

axisobj        43.952    43.952    43.952
ecceobj         0.249     0.249     0.249
incobj         31.219    31.219    31.219
qmin           31.669    31.669    31.669
qmax           56.319    56.320    56.319
amean          43.724    43.724    43.724
amin           43.313    43.313    43.313
amax           44.205    44.205    44.205
emean           0.208     0.208     0.208
emin            0.139     0.139     0.139
emax            0.275     0.275     0.275
imean          31.857    31.858    31.856
imin           30.351    30.351    30.352
imax           33.104    33.104    33.103
excite_mean     0.569     0.569     0.569
fracstop        1.000     1.000     1.000
cjmean          2.689     2.689     2.689

libcent 0       180.3     180.8     179.4
libamp  0        94.4      95.2      93.0
libcent 1       179.4     179.4     179.4
libamp  1       113.3     113.3     113.3
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       190.2     190.1     190.3
kozaiamp        180.0     180.0     180.0