Orbit Fit and Astrometric record for 13RV156

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: 13RV156   
# Created Fri Dec  3 02:11:53 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     15 observations of     15
# Arc:   5.01y
# First observation: 2013/09/09
#  Last observation: 2018/09/11
# Chi-squared of fit:     5.59 DOF:     24 RMS:  0.11
# Min/Max residuals:    -0.17    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.556647E-05  2.632875E-02  2.345075E-07  1.159101E-03  2.551177E-02  1.887145E-04
# Covariance matrix:
  3.7239E-13  2.0434E-14 -2.6431E-16  3.8601E-15  3.7210E-13  8.3723E-13
  2.0434E-14  3.2140E-13 -2.9077E-15  1.3974E-14  3.3811E-13  2.7686E-12
 -2.6431E-16 -2.9077E-15  2.0339E-13 -5.2845E-14 -2.4593E-15 -2.6819E-14
  3.8601E-15  1.3974E-14 -5.2845E-14  2.6923E-14  1.6767E-14  1.3148E-13
  3.7210E-13  3.3811E-13 -2.4593E-15  1.6767E-14  9.3815E-13  3.4603E-12
  8.3723E-13  2.7686E-12 -2.6819E-14  1.3148E-13  3.4603E-12  2.6122E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.280686   15.141091    0.484566   -0.081268   -0.880269  2456544.754918
# Heliocentric elements and errors
Epoch:              2456544.5000  =  2013/09/09
Mean Anomaly:          355.66696 +/-     0.118
Argument of Peri:      300.44835 +/-     0.141
Long of Asc Node:       79.03668 +/-     0.003
Inclination:             5.71369 +/-     0.000
Eccentricity:         0.08415449 +/-    0.0001
Semi-Major Axis:     43.75046112 +/-    0.0063
Time of Perihelion: 2457816.7196 +/-      41.4
Perihelion:          40.06866329 +/-    0.0074
Aphelion:            47.43225896 +/-    0.0083
Period (y)              289.3891 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.65573225 +/-    0.0014
Ecliptic Y            9.96105319 +/-    0.0004
Ecliptic Z           -3.60755402 +/-    0.0001
Ecliptic XDOT        -0.00071368 +/-    0.0000
Ecliptic YDOT         0.00273455 +/-    0.0000
Ecliptic ZDOT         0.00012214 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.08120530 +/-    0.0014
Geocenter to KBO     39.19762320 +/-    0.0015
# Hcoef:  7.58

The following table shows the complete astrometric record for 13RV156. 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 (13RV156) followed by the observatory code and reference code for the source of the astrometry.

2013 09  09.25414  01 03 54.967  +01 05 22.73  24.1g 13RV156   W84  C~52RN      
2013 09  10.35978  01 03 50.614  +01 04 51.71  23.6r 13RV156   W84  C~52RN      
2013 09  10.36117  01 03 50.591  +01 04 51.59  23.0i 13RV156   W84  C~52RN      
2013 10  13.20726  01 01 23.787  +00 49 05.59  23.3i 13RV156   W84  C~52RN      
2013 10  13.20863  01 01 23.797  +00 49 05.69  22.6z 13RV156   W84  C~52RN      
2013 11  08.17829  00 59 29.176  +00 38 42.79  23.3r 13RV156   W84  C~52RN      
2013 11  08.19267  00 59 29.105  +00 38 42.39  23.2i 13RV156   W84  C~52RN      
2015 11  07.11873  01 10 31.132  +01 55 57.31  23.5r 13RV156   W84  C~52RN      
2016 10  23.22109  01 17 02.531  +02 39 48.33  23.8r 13RV156   W84  C~52RN      
2016 11  05.16032  01 16 04.297  +02 34 39.07  24.0r 13RV156   W84  C~52RN      
2016 11  05.18100  01 16 04.207  +02 34 38.39  23.5i 13RV156   W84  C~52RN      
2017 08  22.39195  01 26 41.409  +03 45 04.80  23.5r 13RV156   W84  C~52RN      
2017 08  22.39332  01 26 41.418  +03 45 04.62  23.4i 13RV156   W84  C~52RN      
2018 09  11.35023  01 31 09.049  +04 15 22.83  24.0r 13RV156   W84  C~52RN      
2018 09  11.35161  01 31 09.023  +04 15 22.80  23.5i 13RV156   W84  C~52RN      

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     0.10       0.00     0.15
     2   0.0030      0.00     0.11       0.00    -0.03
     3   0.0030      0.00    -0.16       0.00    -0.11
     4   0.0930      0.00    -0.10       0.00    -0.06
     5   0.0930      0.00     0.14       0.00     0.08
     6   0.1641      0.00     0.06       0.00     0.01
     7   0.1641      0.00    -0.14       0.00    -0.11
     8   2.1598      0.00     0.01       0.00     0.17
     9   3.1211      0.00    -0.09       0.00     0.13
    10   3.1565      0.00     0.04       0.00     0.06
    11   3.1565      0.00     0.05       0.00    -0.17
    12   3.9511      0.00    -0.12       0.00     0.02
    13   3.9511      0.00     0.06       0.00    -0.13
    14   5.0051      0.00     0.20       0.00     0.01
    15   5.0051      0.00    -0.11       0.00     0.01

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.

13RV156    quality flag:3

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

axisobj        44.008    44.008    44.008
ecceobj         0.089     0.089     0.090
incobj          5.716     5.716     5.716
qmin           39.056    39.048    39.059
qmax           48.676    48.654    48.709
amean          43.727    43.727    43.727
amin           43.369    43.369    43.369
amax           44.120    44.120    44.119
emean           0.087     0.087     0.087
emin            0.058     0.058     0.058
emax            0.105     0.104     0.105
imean           3.290     3.311     3.268
imin            2.102     2.131     2.076
imax            5.157     5.159     5.155
excite_mean     0.106     0.106     0.106
fracstop        1.000     1.000     1.000
cjmean          3.085     3.085     3.085

libcent 0       176.0     177.1     185.5
libamp  0        86.8      86.8      86.7
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       152.7     154.0     151.5
kozaiamp        180.0     180.0     180.0