Orbit Fit and Astrometric record for 13SE112

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: 13SE112   
# Created Mon Dec  6 02:11:59 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     16 observations of     16
# Arc:   8.10y
# First observation: 2013/09/29
#  Last observation: 2021/11/05
# Chi-squared of fit:     5.11 DOF:     26 RMS:  0.10
# Min/Max residuals:    -0.24    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.618235E-05  2.887406E-02  1.932204E-06  2.901203E-03  2.710521E-02  2.168925E-03
# Covariance matrix:
  4.1339E-13 -2.2554E-13  2.0612E-14 -2.0772E-14  4.2256E-13 -9.6112E-13
 -2.2554E-13  1.9686E-13 -2.0060E-14  2.0424E-14 -3.5078E-13  9.3989E-13
  2.0612E-14 -2.0060E-14  2.2255E-13 -4.1202E-14  4.3398E-14 -1.0295E-13
 -2.0772E-14  2.0424E-14 -4.1202E-14  1.4135E-14 -4.1173E-14  1.0424E-13
  4.2256E-13 -3.5078E-13  4.3398E-14 -4.1173E-14  1.6345E-12 -1.9685E-12
 -9.6112E-13  9.3989E-13 -1.0295E-13  1.0424E-13 -1.9685E-12  4.8111E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.058945   -2.966531   -0.153957    0.052934   -0.988627  2456564.693648
# Heliocentric elements and errors
Epoch:              2456564.5000  =  2013/09/29
Mean Anomaly:           31.68372 +/-     0.026
Argument of Peri:      346.80983 +/-     0.030
Long of Asc Node:      329.95136 +/-     0.001
Inclination:             6.46930 +/-     0.000
Eccentricity:         0.12928261 +/-    0.0002
Semi-Major Axis:     42.30397849 +/-    0.0108
Time of Perihelion: 2447719.3757 +/-       8.0
Perihelion:          36.83480989 +/-    0.0123
Aphelion:            47.77314708 +/-    0.0145
Period (y)              275.1567 +/-      0.11
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           37.78763954 +/-    0.0017
Ecliptic Y           -1.80104570 +/-    0.0001
Ecliptic Z            1.96879569 +/-    0.0001
Ecliptic XDOT         0.00034763 +/-    0.0000
Ecliptic YDOT         0.00290078 +/-    0.0000
Ecliptic ZDOT         0.00030446 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   37.88168437 +/-    0.0017
Geocenter to KBO     36.89326661 +/-    0.0017
# Hcoef:  7.87

The following table shows the complete astrometric record for 13SE112. 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 (13SE112) followed by the observatory code and reference code for the source of the astrometry.

2013 09  29.19287  23 44 14.992  +01 37 39.37  24.3r 13SE112   W84  C~52RU      
2013 09  29.19427  23 44 14.975  +01 37 39.33  23.5i 13SE112   W84  C~52RU      
2013 10  28.03670  23 42 11.144  +01 24 01.09  23.4r 13SE112   W84  C~52RU      
2013 10  28.03957  23 42 11.144  +01 24 00.99  23.4i 13SE112   W84  C~52RU      
2013 11  08.12202  23 41 36.251  +01 19 51.34  23.7r 13SE112   W84  C~52RU      
2016 08  26.21199  00 04 12.167  +04 17 23.03  23.9r 13SE112   W84  C~52RU      
2016 09  11.23873  00 02 59.741  +04 10 35.40  23.2i 13SE112   W84  C~52RU      
2016 09  22.12861  00 02 06.982  +04 05 19.33  23.6r 13SE112   W84  C~52RU      
2016 09  22.12998  00 02 06.988  +04 05 19.03  24.1g 13SE112   W84  C~52RU      
2017 09  27.17868  00 07 27.425  +04 50 13.64  23.8r 13SE112   W84  C~52RU      
2017 09  27.18004  00 07 27.408  +04 50 13.49  23.0i 13SE112   W84  C~52RU      
2017 10  13.16303  00 06 11.034  +04 42 06.55  22.9i 13SE112   W84  C~52RU      
2017 10  13.16440  00 06 11.027  +04 42 06.27  23.3r 13SE112   W84  C~52RU      
2021 11  05.122760 00 27 20.242  +07 36 06.72  23.5G 13SE112   G37  C~5BQk      
2021 11  05.172520 00 27 20.063  +07 36 05.46        13SE112   G37  C~5BQk      
2021 11  05.221160 00 27 19.871  +07 36 04.27        13SE112   G37  C~5BQk      

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     0.15       0.00     0.01
     2   0.0000      0.00    -0.01       0.00     0.01
     3   0.0790      0.00    -0.12       0.00    -0.02
     4   0.0790      0.00     0.04       0.00    -0.05
     5   0.1093      0.00    -0.05       0.00     0.11
     6   2.9076      0.00     0.04       0.00    -0.15
     7   2.9515      0.00    -0.00       0.00     0.20
     8   2.9813      0.00    -0.14       0.00     0.02
     9   2.9813      0.00     0.05       0.00    -0.24
    10   3.9945      0.00     0.07       0.00     0.06
    11   3.9945      0.00    -0.08       0.00    -0.05
    12   4.0382      0.00     0.08       0.00     0.17
    13   4.0383      0.00     0.07       0.00    -0.07
    14   8.1011      0.00    -0.14       0.00    -0.10
    15   8.1012      0.00     0.07       0.00    -0.01
    16   8.1014      0.00     0.02       0.00     0.12

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.

13SE112    quality flag:3

Type:          5:3EE     5:3EE     5:3EE

axisobj        42.551    42.551    42.551
ecceobj         0.135     0.135     0.135
incobj          6.453     6.453     6.453
qmin           35.473    35.473    35.474
qmax           49.712    49.713    49.712
amean          42.328    42.328    42.328
amin           41.909    41.909    41.908
amax           42.795    42.794    42.796
emean           0.139     0.139     0.139
emin            0.116     0.116     0.116
emax            0.163     0.163     0.163
imean           6.937     6.937     6.937
imin            5.911     5.911     5.911
imax            8.095     8.095     8.094
excite_mean     0.184     0.184     0.184
fracstop        1.000     1.000     1.000
cjmean          3.042     3.042     3.042

libcent 0       178.9     179.0     178.9
libamp  0        90.0      89.9      90.0
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       193.9     193.9     193.9
kozaiamp        180.0     180.0     180.0