Orbit Fit and Astrometric record for 13SB113

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: 13SB113   
# Created Tue Apr  1 01:09:44 2025
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     10 observations of     10
# Arc:   5.11y
# First observation: 2013/09/30
#  Last observation: 2018/11/09
# Chi-squared of fit:     1.47 DOF:     14 RMS:  0.07
# Min/Max residuals:    -0.13    0.11
# Exact a, adot, b, bdot, g, gdot:
  1.543121E-05  2.376039E-02 -1.293290E-06 -1.252438E-03  2.400423E-02 -1.580905E-03
# Covariance matrix:
  5.3210E-13 -2.5785E-13 -2.4688E-15  8.3713E-15  3.3799E-13 -1.4013E-12
 -2.5785E-13  8.4963E-13  1.2556E-14 -4.5056E-14  1.1852E-13  7.5046E-12
 -2.4688E-15  1.2556E-14  3.5360E-13 -8.4428E-14  2.3654E-15  1.1580E-13
  8.3713E-15 -4.5056E-14 -8.4428E-14  3.6325E-14 -9.7410E-15 -4.1623E-13
  3.3799E-13  1.1852E-13  2.3654E-15 -9.7410E-15  9.4966E-13  1.6046E-12
 -1.4013E-12  7.5046E-12  1.1580E-13 -4.1623E-13  1.6046E-12  6.9318E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.074838    3.583551   -0.056603   -0.001206   -1.000034  2456565.661748
# Heliocentric elements and errors
Epoch:              2456566.5000  =  2013/10/01
Mean Anomaly:          318.38037 +/-     0.140
Argument of Peri:      230.83707 +/-     0.181
Long of Asc Node:      182.27462 +/-     0.001
Inclination:             3.01600 +/-     0.000
Eccentricity:         0.09408382 +/-    0.0003
Semi-Major Axis:     45.67288750 +/-    0.0082
Time of Perihelion: 2469600.6239 +/-      51.4
Perihelion:          41.37580800 +/-    0.0141
Aphelion:            49.96996700 +/-    0.0150
Period (y)              308.6711 +/-      0.08
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           42.57192481 +/-    0.0017
Ecliptic Y            2.72595846 +/-    0.0001
Ecliptic Z           -0.05448812 +/-    0.0000
Ecliptic XDOT        -0.00035570 +/-    0.0000
Ecliptic YDOT         0.00269213 +/-    0.0000
Ecliptic ZDOT        -0.00014247 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.65918823 +/-    0.0017
Geocenter to KBO     41.65941227 +/-    0.0017
# Hcoef:  7.30

The following table shows the complete astrometric record for 13SB113. 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 (13SB113) followed by the observatory code and reference code for the source of the astrometry.

2013 09  30.16097  00 13 16.380  +01 21 21.56  23.3i 13SB113   W84  C~52RV      
2013 10  13.11626  00 12 21.047  +01 15 12.77  23.3i 13SB113   W84  C~52RV      
2013 11  22.08554  00 10 12.050  +01 00 47.76  23.4r 13SB113   W84  C~52RV      
2013 11  22.08692  00 10 12.032  +01 00 47.75  23.3i 13SB113   W84  C~52RV      
2015 11  07.07593  00 21 02.138  +02 01 50.90  23.2r 13SB113   W84  C~52RV      
2017 08  22.32044  00 36 23.195  +03 32 13.51  23.5r 13SB113   W84  C~52RV      
2017 09  27.19789  00 34 03.201  +03 16 42.13  23.9i 13SB113   W84  C~52RV      
2017 09  27.19925  00 34 03.182  +03 16 42.16  23.2r 13SB113   W84  C~52RV      
2018 10  18.15486  00 37 43.968  +03 35 17.32  23.0z 13SB113   W84  C~52RV      
2018 11  09.14631  00 36 18.934  +03 26 04.02  24.1r 13SB113   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     0.00       0.00     0.11
     2   0.0355      0.00     0.00       0.00     0.01
     3   0.1449      0.00     0.10       0.00    -0.03
     4   0.1449      0.00    -0.13       0.00    -0.02
     5   2.1024      0.00     0.08       0.00    -0.12
     6   3.8937      0.00    -0.02       0.00     0.03
     7   3.9919      0.00     0.08       0.00    -0.02
     8   3.9919      0.00    -0.12       0.00     0.05
     9   5.0486      0.00     0.03       0.00    -0.02
    10   5.1088      0.00     0.01       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.

13SB113    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.949    45.949    45.949
ecceobj         0.097     0.097     0.097
incobj          3.007     3.007     3.007
qmin           40.536    40.528    40.548
qmax           51.131    51.167    51.129
amean          45.683    45.683    45.683
amin           45.309    45.317    45.296
amax           46.091    46.096    46.079
emean           0.097     0.097     0.097
emin            0.083     0.083     0.083
emax            0.110     0.110     0.110
imean           3.472     3.472     3.472
imin            3.004     3.003     3.003
imax            3.909     3.909     3.909
excite_mean     0.114     0.114     0.114
fracstop        1.000     1.000     1.000
cjmean          3.106     3.106     3.106

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       187.0     187.0     186.9
kozaiamp        180.0     180.0     180.0