Orbit Fit and Astrometric record for 13VO71

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: 13VO71    
# Created Tue Nov 30 02:12:21 2021
# Orbit generated from Bernstein formalism
# Fitting      8 observations of      8
# Arc:   3.03y
# First observation: 2013/11/08
#  Last observation: 2016/11/18
Preliminary a, adot, b, bdot, g, gdot:
   0.000001   0.016062  -0.000004   0.004397   0.020362   0.000000
# Chi-squared of fit:     6.83 DOF:     10 RMS:  0.16
# Min/Max residuals:    -0.30    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.154227E-05  1.601121E-02  3.273715E-06  4.379757E-03  2.023415E-02 -1.017749E-03
# Covariance matrix:
  4.5714E-13 -4.1206E-13  9.8919E-15 -6.8971E-14 -1.6937E-13 -5.1183E-12
 -4.1206E-13  3.6404E-12 -1.4564E-13  9.8445E-13  3.6274E-12  7.2956E-11
  9.8919E-15 -1.4564E-13  4.3940E-13 -1.9561E-13 -1.6136E-13 -3.0206E-12
 -6.8971E-14  9.8445E-13 -1.9561E-13  3.7036E-13  1.0524E-12  2.0346E-11
 -1.6937E-13  3.6274E-12 -1.6136E-13  1.0524E-12  5.4223E-12  7.7866E-11
 -5.1183E-12  7.2956E-11 -3.0206E-12  2.0346E-11  7.7866E-11  1.5076E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.871258   12.213233   -0.544760   -0.055635   -0.824243  2456604.686168
# Heliocentric elements and errors
Epoch:              2456600.5000  =  2013/11/04
Mean Anomaly:          203.61916 +/-     0.755
Argument of Peri:      148.09564 +/-     0.746
Long of Asc Node:       26.45560 +/-     0.001
Inclination:            15.78452 +/-     0.001
Eccentricity:         0.14975264 +/-    0.0005
Semi-Major Axis:     44.07124636 +/-    0.0185
Time of Perihelion: 2503021.2823 +/-     222.1
Perihelion:          37.47146097 +/-    0.0288
Aphelion:            50.67103175 +/-    0.0322
Period (y)              292.5777 +/-      0.18
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           48.88405311 +/-    0.0055
Ecliptic Y           11.14141223 +/-    0.0012
Ecliptic Z           -3.33657040 +/-    0.0004
Ecliptic XDOT        -0.00055966 +/-    0.0000
Ecliptic YDOT         0.00209511 +/-    0.0000
Ecliptic ZDOT         0.00060071 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   50.24852652 +/-    0.0054
Geocenter to KBO     49.42140841 +/-    0.0057
# Hcoef:  6.43

The following table shows the complete astrometric record for 13VO71. 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 (13VO71) followed by the observatory code and reference code for the source of the astrometry.

2013 11  08.18539  00 50 58.066  +01 15 41.15  23.7r 13VO71    W84  C~52Rq      
2013 11  08.18675  00 50 58.064  +01 15 40.79  24.0i 13VO71    W84  C~52Rq      
2013 11  23.15191  00 50 14.660  +01 12 39.30  21.8i 13VO71    W84  C~52Rq      
2014 11  13.13537  00 53 42.549  +01 49 49.35  23.8r 13VO71    W84  C~52Rq      
2016 09  01.36604  01 04 06.832  +03 24 36.02  23.9r 13VO71    W84  C~52Rq      
2016 11  05.16722  01 00 06.809  +03 02 22.10  22.3i 13VO71    W84  C~52Rq      
2016 11  06.16827  01 00 03.357  +03 02 04.84  24.1r 13VO71    W84  C~52Rq      
2016 11  18.09504  00 59 25.275  +02 59 09.17  22.8z 13VO71    W84  C~52Rq      

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     0.20       0.00     0.03
     2   0.0000     -0.17     0.10      -0.32    -0.30
     3   0.0410   -670.42    -0.24      85.62     0.22
     4   1.0129   3068.81    -0.09     928.45     0.06
     5   2.8150  13917.68    -0.05    2547.02     0.09
     6   2.9924  10073.61     0.02    2707.50     0.28
     7   2.9952  10019.12     0.07    2711.62    -0.22
     8   3.0278   9423.83    -0.00    2770.64    -0.17

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.

13VO71    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        44.293    44.345    44.242
ecceobj         0.143     0.144     0.142
incobj         15.735    15.735    15.736
qmin           36.435    36.444    36.426
qmax           52.096    52.165    52.054
amean          44.093    44.136    44.056
amin           43.716    43.763    43.688
amax           44.525    44.546    44.477
emean           0.154     0.155     0.154
emin            0.140     0.140     0.139
emax            0.170     0.172     0.170
imean          15.073    15.081    15.072
imin           14.378    14.385    14.366
imax           15.718    15.720    15.708
excite_mean     0.303     0.303     0.302
fracstop        1.000     1.000     1.000
cjmean          2.992     2.992     2.991

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       180.5     180.6     180.2
kozaiamp        180.0     180.0     180.0