Orbit Fit and Astrometric record for 13VO46

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: 13VO46    
# Created Sat Dec  4 02:12:19 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     28 observations of     28
# Arc:   5.06y
# First observation: 2013/11/08
#  Last observation: 2018/12/01
# Chi-squared of fit:     9.39 DOF:     50 RMS:  0.10
# Min/Max residuals:    -0.19    0.39
# Exact a, adot, b, bdot, g, gdot:
  1.873334E-05  3.357579E-02  4.146048E-07  4.939542E-04  2.880466E-02 -5.176816E-03
# Covariance matrix:
  3.0533E-13 -2.1503E-13  2.9850E-15 -3.2984E-15 -5.0581E-14 -9.7887E-13
 -2.1503E-13  2.6270E-13 -4.5509E-15  5.0973E-15  7.6380E-14  1.5109E-12
  2.9850E-15 -4.5509E-15  2.0543E-13 -6.0484E-14 -7.1413E-15 -2.9182E-14
 -3.2984E-15  5.0973E-15 -6.0484E-14  2.4128E-14  1.0653E-15  3.2230E-14
 -5.0581E-14  7.6380E-14 -7.1413E-15  1.0653E-15  1.9427E-13  4.9467E-13
 -9.7887E-13  1.5109E-12 -2.9182E-14  3.2230E-14  4.9467E-13  9.5654E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -12.012849   31.475949   -0.242434   -0.199540   -0.938413  2456604.727958
# Heliocentric elements and errors
Epoch:              2456604.5000  =  2013/11/08
Mean Anomaly:          339.35317 +/-     0.010
Argument of Peri:      312.97041 +/-     0.020
Long of Asc Node:      117.18764 +/-     0.001
Inclination:            11.72975 +/-     0.000
Eccentricity:         0.29525131 +/-    0.0001
Semi-Major Axis:     48.10364288 +/-    0.0045
Time of Perihelion: 2463593.5198 +/-      16.5
Perihelion:          33.90097936 +/-    0.0048
Aphelion:            62.30630639 +/-    0.0069
Period (y)              333.6377 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           29.65064064 +/-    0.0004
Ecliptic Y           18.44063180 +/-    0.0003
Ecliptic Z           -7.22564725 +/-    0.0001
Ecliptic XDOT        -0.00207462 +/-    0.0000
Ecliptic YDOT         0.00247386 +/-    0.0000
Ecliptic ZDOT         0.00014847 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.65717525 +/-    0.0004
Geocenter to KBO     34.71674556 +/-    0.0005
# Hcoef:  7.78

The following table shows the complete astrometric record for 13VO46. 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 (13VO46) followed by the observatory code and reference code for the source of the astrometry.

2013 11  08.22718  02 13 51.057  +00 41 54.59  23.1r 13VO46    W84  C~4yRU      
2013 11  08.22718  02 13 51.06   +00 41 54.6   22.9r 13VO46    W84  C~3clY      
2013 11  08.24587  02 13 50.962  +00 41 54.15  23.2i 13VO46    W84  C~4yRU      
2013 11  08.24587  02 13 50.96   +00 41 54.1   23.4i 13VO46    W84  C~3clY      
2014 10  21.24508  02 22 42.238  +01 30 41.36  23.1g 13VO46    W84  C~4yRU      
2014 10  21.24648  02 22 42.198  +01 30 41.00  22.9r 13VO46    W84  C~4yRU      
2014 10  21.24648  02 22 42.20   +01 30 41.0   23.2r 13VO46    W84  C~3clY      
2015 01  21.04313  02 17 24.024  +01 23 24.30  23.3r 13VO46    W84  C~4yRU      
2015 01  22.03702  02 17 24.523  +01 23 49.15  22.7z 13VO46    W84  C~4yRU      
2015 12  17.13495  02 25 28.214  +01 56 26.60  23.4r 13VO46    W84  C~4yRU      
2015 12  17.13495  02 25 28.21   +01 56 26.6   23.6r 13VO46    W84  C~3clY      
2015 12  17.13631  02 25 28.207  +01 56 26.38  23.5i 13VO46    W84  C~4yRU      
2016 09  09.40706  02 40 14.073  +03 14 09.55  22.6i 13VO46    W84  C~4yRU      
2016 09  09.40706  02 40 14.07   +03 14 09.5   22.9i 13VO46    W84  C~3clY      
2016 09  10.36578  02 40 11.603  +03 13 41.89  23.1r 13VO46    W84  C~4yRU      
2016 09  10.36578  02 40 11.60   +03 13 41.9   23.2r 13VO46    W84  C~3clY      
2016 11  07.17788  02 35 51.066  +02 45 39.00  23.1i 13VO46    W84  C~4yRU      
2016 11  07.17788  02 35 51.07   +02 45 39.0   23.2i 13VO46    W84  C~3clY      
2016 11  07.17925  02 35 51.058  +02 45 38.86  22.1z 13VO46    W84  C~4yRU      
2016 11  07.18063  02 35 51.048  +02 45 38.96  23.2r 13VO46    W84  C~4yRU      
2016 11  07.18063  02 35 51.05   +02 45 39.0   23.3r 13VO46    W84  C~3clY      
2017 09  18.32668  02 47 13.489  +03 51 07.49  22.9i 13VO46    W84  C~4yRU      
2017 09  18.32804  02 47 13.499  +03 51 07.53  23.4r 13VO46    W84  C~4yRU      
2017 10  30.23247  02 44 02.757  +03 30 34.84  22.5i 13VO46    W84  C~4yRU      
2018 01  05.06124  02 39 13.135  +03 20 26.12  23.3r 13VO46    W84  C~4yRU      
2018 01  05.06261  02 39 13.139  +03 20 26.26  24.5g 13VO46    W84  C~4yRU      
2018 12  01.16418  02 48 44.973  +04 01 59.56  23.3r 13VO46    W84  C~4yRU      
2018 12  01.16555  02 48 44.967  +04 01 59.63  24.5g 13VO46    W84  C~4yRU      

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    -0.05
     2   0.0000      0.00    -0.00       0.00    -0.04
     3   0.0001      0.00     0.00       0.00    -0.08
     4   0.0001      0.00    -0.03       0.00    -0.13
     5   0.9501      0.00     0.39       0.00     0.35
     6   0.9501      0.00    -0.10       0.00     0.03
     7   0.9501      0.00    -0.07       0.00     0.03
     8   1.2014      0.00    -0.01       0.00    -0.09
     9   1.2041      0.00     0.18       0.00     0.10
    10   2.1052      0.00    -0.15       0.00     0.03
    11   2.1052      0.00    -0.09       0.00     0.03
    12   2.1052      0.00    -0.13       0.00    -0.19
    13   2.8369      0.00    -0.07       0.00     0.06
    14   2.8369      0.00    -0.02       0.00     0.11
    15   2.8395      0.00    -0.01       0.00    -0.07
    16   2.8395      0.00    -0.06       0.00    -0.06
    17   2.9978      0.00     0.10       0.00     0.03
    18   2.9978      0.00     0.04       0.00     0.03
    19   2.9978      0.00     0.03       0.00    -0.08
    20   2.9978      0.00     0.03       0.00     0.09
    21   2.9978      0.00    -0.00       0.00     0.05
    22   3.8606      0.00    -0.10       0.00    -0.09
    23   3.8606      0.00     0.12       0.00    -0.01
    24   3.9754      0.00     0.01       0.00     0.07
    25   4.1583      0.00    -0.02       0.00    -0.04
    26   4.1583      0.00     0.08       0.00     0.08
    27   5.0621      0.00     0.02       0.00    -0.09
    28   5.0621      0.00     0.04       0.00    -0.00

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.

13VO46    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.399    48.399    48.399
ecceobj         0.297     0.297     0.297
incobj         11.731    11.731    11.731
qmin           32.651    32.658    32.645
qmax           63.940    63.921    63.746
amean          47.797    47.797    47.797
amin           47.232    47.234    47.240
amax           48.513    48.508    48.503
emean           0.295     0.295     0.295
emin            0.273     0.273     0.273
emax            0.318     0.318     0.317
imean           9.211     9.219     9.203
imin            8.104     8.114     8.096
imax           10.638    10.636    10.626
excite_mean     0.336     0.336     0.336
fracstop        1.000     1.000     1.000
cjmean          3.006     3.006     3.006

libcent 0        77.4      77.5      77.5
libamp  0        35.0      34.9      34.8
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       183.3     183.5     182.7
kozaiamp        180.0     180.0     180.0