Orbit Fit and Astrometric record for 13VV71

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: 13VV71    
# Created Tue Dec  7 02:12:23 2021
# Orbit generated from Bernstein formalism
# Fitting     14 observations of     14
# Arc:   3.97y
# First observation: 2013/11/13
#  Last observation: 2017/11/01
Preliminary a, adot, b, bdot, g, gdot:
  -0.000045   0.023341  -0.000009   0.002592   0.024248   0.000000
# Chi-squared of fit:     6.35 DOF:     22 RMS:  0.12
# Min/Max residuals:    -0.22    0.37
# Exact a, adot, b, bdot, g, gdot:
  1.499738E-05  2.317610E-02  2.726743E-06  2.580673E-03  2.443699E-02 -1.314607E-03
# Covariance matrix:
  5.6996E-13 -4.8532E-13  2.6122E-14 -4.0621E-14 -1.7886E-13 -3.6215E-12
 -4.8532E-13  8.4037E-13 -4.1727E-14  8.1450E-14  4.4028E-14  7.3804E-12
  2.6122E-14 -4.1727E-14  3.5746E-13 -1.2078E-13 -2.6725E-14 -4.1571E-13
 -4.0621E-14  8.1450E-14 -1.2078E-13  6.2526E-14  1.3447E-14  7.7319E-13
 -1.7886E-13  4.4028E-14 -2.6725E-14  1.3447E-14  5.9322E-13  9.9720E-13
 -3.6215E-12  7.3804E-12 -4.1571E-13  7.7319E-13  9.9720E-13  6.9841E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
  -15.728826   36.540715   -0.240376   -0.259707   -0.922674  2456609.659458
# Heliocentric elements and errors
Epoch:              2456600.5000  =  2013/11/04
Mean Anomaly:          243.05759 +/-     0.163
Argument of Peri:       54.97254 +/-     0.157
Long of Asc Node:      103.86745 +/-     0.002
Inclination:            16.63150 +/-     0.000
Eccentricity:         0.05994992 +/-    0.0003
Semi-Major Axis:     40.63281098 +/-    0.0051
Time of Perihelion: 2487331.9657 +/-      42.6
Perihelion:          38.19687716 +/-    0.0140
Aphelion:            43.06874479 +/-    0.0142
Period (y)              259.0142 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.27265190 +/-    0.0010
Ecliptic Y           24.21885231 +/-    0.0007
Ecliptic Z          -11.09316054 +/-    0.0003
Ecliptic XDOT        -0.00160309 +/-    0.0000
Ecliptic YDOT         0.00204668 +/-    0.0000
Ecliptic ZDOT         0.00031837 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.84656592 +/-    0.0009
Geocenter to KBO     40.92156745 +/-    0.0013
# Hcoef:  7.39

The following table shows the complete astrometric record for 13VV71. 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 (13VV71) followed by the observatory code and reference code for the source of the astrometry.

2013 11  13.15868  02 37 19.030  -01 11 20.19  23.0z 13VV71    W84  C~52Rr      
2013 12  28.13513  02 34 29.731  -01 13 24.89  23.6r 13VV71    W84  C~52Rr      
2014 09  30.28683  02 45 26.699  -00 19 50.99  23.1i 13VV71    W84  C~52Rr      
2014 09  30.28820  02 45 26.708  -00 19 51.37  24.1g 13VV71    W84  C~52Rr      
2014 09  30.28958  02 45 26.700  -00 19 51.12  23.7r 13VV71    W84  C~52Rr      
2014 10  23.31274  02 43 50.001  -00 30 14.17  23.1i 13VV71    W84  C~52Rr      
2016 09  23.28735  02 55 30.369  +00 50 58.85  22.9i 13VV71    W84  C~52Rr      
2016 09  24.27915  02 55 27.257  +00 50 31.06  23.7r 13VV71    W84  C~52Rr      
2016 09  25.27380  02 55 24.059  +00 50 03.50  24.3g 13VV71    W84  C~52Rr      
2016 10  28.22715  02 53 08.592  +00 35 39.22  23.8i 13VV71    W84  C~52Rr      
2016 11  29.13615  02 50 38.550  +00 27 11.42  24.3r 13VV71    W84  C~52Rr      
2017 09  18.33217  03 00 36.366  +01 27 14.91  23.6g 13VV71    W84  C~52Rr      
2017 09  26.32426  03 00 12.840  +01 23 36.16  24.1r 13VV71    W84  C~52Rr      
2017 11  01.17552  02 57 43.721  +01 08 23.91  22.8z 13VV71    W84  C~52Rr      

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    -0.22
     2   0.1231  -2445.79     0.05     693.15     0.08
     3   0.8792   7922.13    -0.11     587.13     0.17
     4   0.8792   7922.13    -0.01     586.72    -0.22
     5   0.8792   7922.10     0.04     587.00     0.07
     6   0.9422   6346.63    -0.00     460.84    -0.02
     7   2.8614  17902.06     0.05    1719.52     0.10
     8   2.8641  17848.54     0.04    1708.05     0.06
     9   2.8668  17793.87     0.00    1697.23     0.37
    10   2.9571  15577.75     0.01    1527.20    -0.10
    11   3.0444  13271.81    -0.05    1766.24     0.11
    12   3.8472  22996.25    -0.02    2319.86    -0.06
    13   3.8690  22587.06    -0.02    2224.44    -0.21
    14   3.9672  20150.44     0.02    2072.60    -0.14

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.

13VV71    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.826    40.841    40.810
ecceobj         0.054     0.054     0.055
incobj         16.641    16.641    16.641
qmin           37.075    37.146    37.165
qmax           44.251    44.216    44.152
amean          40.567    40.582    40.548
amin           40.248    40.266    40.226
amax           40.897    40.910    40.882
emean           0.064     0.063     0.063
emin            0.045     0.044     0.045
emax            0.083     0.082     0.081
imean          14.664    14.668    14.659
imin           13.745    13.756    13.736
imax           15.985    15.969    15.997
excite_mean     0.261     0.261     0.261
fracstop        1.000     1.000     1.000
cjmean          2.985     2.985     2.985

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       180.7     180.8     180.4
kozaiamp        179.9     180.0     179.9