Orbit Fit and Astrometric record for 01VN71

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: 01VN71    
# Created Mon Oct 23 01:37:16 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   21
# Arc:  14.00y
# First observation: 2001/11/09
#  Last observation: 2015/11/08
Preliminary a, adot, b, bdot, g, gdot:
  -0.007247   0.047976  -0.002191   0.015719   0.031939   0.000000
# Chi-squared of fit:    37.68 DOF:   36 RMS:  0.24
# Min/Max residuals:    -0.45    0.58
# Exact a, adot, b, bdot, g, gdot:
  2.091294E-05  4.196688E-02  5.514476E-06  1.381198E-02  3.453457E-02 -1.965463E-03
# Covariance matrix:
  1.6253E-13 -4.7792E-14  9.3274E-15 -1.1277E-14  1.1029E-13 -5.2702E-14
 -4.7792E-14  3.7898E-14 -1.0905E-14  1.1247E-14 -1.2346E-14  5.1832E-14
  9.3274E-15 -1.0905E-14  1.0453E-13 -1.4011E-14 -7.1372E-15 -1.6646E-14
 -1.1277E-14  1.1247E-14 -1.4011E-14  6.8699E-15 -1.5949E-16  1.6922E-14
  1.1029E-13 -1.2346E-14 -7.1372E-15 -1.5949E-16  4.4444E-13 -4.0521E-15
 -5.2702E-14  5.1832E-14 -1.6646E-14  1.6922E-14 -4.0521E-15  7.7880E-14
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.322230   58.305989    0.193948   -0.072872   -0.963013  2452222.953023
# Heliocentric elements and errors
Epoch:              2452220.5000  =  2001/11/07
Mean Anomaly:          351.58733 +/-     0.003
Argument of Peri:        1.31246 +/-     0.004
Long of Asc Node:       70.46941 +/-     0.000
Inclination:            18.62109 +/-     0.000
Eccentricity:         0.25320329 +/-    0.0001
Semi-Major Axis:     39.81412474 +/-    0.0046
Time of Perihelion: 2454364.8002 +/-       0.6
Perihelion:          29.73305749 +/-    0.0045
Aphelion:            49.89519200 +/-    0.0064
Period (y)              251.2256 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           15.84387343 +/-    0.0003
Ecliptic Y           25.29378091 +/-    0.0005
Ecliptic Z           -2.18217097 +/-    0.0000
Ecliptic XDOT        -0.00287782 +/-    0.0000
Ecliptic YDOT         0.00168631 +/-    0.0000
Ecliptic ZDOT         0.00110383 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   29.92600120 +/-    0.0004
Geocenter to KBO     28.95648878 +/-    0.0006
# Hcoef:  8.85

The following table shows the complete astrometric record for 01VN71. 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 (01VN71) followed by the observatory code and reference code for the source of the astrometry.

2001 11  09.45228  03 48 13.18   +15 33 57.1   23.9R 01VN71    568  Ce1330      
2001 11  09.48072  03 48 13.02   +15 33 56.7   23.9R 01VN71    568  Ce1330      
2001 11  09.56655  03 48 12.42   +15 33 55.4   23.8R 01VN71    568  Ce1330      
2001 11  10.38146  03 48 06.96   +15 33 43.0         01VN71    568  Ce1330      
2001 11  15.26506  03 47 33.76   +15 32 29.5   23.0R 01VN71    309  Ce4815      
2001 11  15.29727  03 47 33.54   +15 32 29.0   23.2R 01VN71    309  Ce4815      
2002 03  20.25280  03 43 07.88   +15 46 56.9         01VN71    568  Cf5138      
2002 03  22.23602  03 43 18.86   +15 48 01.6   23. R 01VN71    568  Cf5138      
2002 03  22.24346  03 43 18.88   +15 48 01.9   23. R 01VN71    568  Cf5138      
2002 11  11.20716  03 57 10.83   +16 50 44.1         01VN71    695  Cg5849      
2002 11  11.26984  03 57 10.37   +16 50 43.5   23.1R 01VN71    695  Cg5849      
2002 11  12.20494  03 57 04.06   +16 50 30.4   23.1R 01VN71    695  Cg5849      
2002 11  12.31522  03 57 03.32   +16 50 28.9   23.0R 01VN71    695  Cg5849      
2002 11  12.38129  03 57 02.86   +16 50 28.1   23.1R 01VN71    695  Cg5849      
2005 12  23.30711  04 20 32.26   +20 27 49.1         01VN71    568  Cp7644      
2005 12  23.36550  04 20 31.87   +20 27 48.8         01VN71    568  Cp7644      
2006 10  23.489342 04 37 02.33   +21 45 16.2         01VN71    645  C~1S6m      
2006 10  23.490171 04 37 02.33   +21 45 16.2         01VN71    645  C~1S6m      
2006 10  23.492659 04 37 02.32   +21 45 16.1         01VN71    645  C~1S6m      
2015 11  08.42308  06 09 45.04   +30 15 26.7   23.1R 01VN71    G37  C~1dc2      
2015 11  08.48934  06 09 44.71   +30 15 28.3         01VN71    G37  C~1dc2      

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    -0.35       0.00     0.17
  2   0.0001     -2.34     0.14       0.11     0.09
  3   0.0003    -11.09    -0.06       0.72     0.17
  4   0.0025    -90.80    -0.09       5.74     0.19
  5   0.0159   -575.07     0.11      38.29     0.00
  6   0.0160   -578.28     0.16      38.49    -0.03
  7   0.3581  -4130.51     0.17    1730.40    -0.13
  8   0.3635  -3961.53     0.23    1758.18    -0.39
  9   0.3636  -3961.18    -0.06    1758.41    -0.26
 10   1.0041   8549.25    -0.07    2865.08     0.25
 11   1.0043   8542.65    -0.45    2865.86     0.58
 12   1.0069   8451.15    -0.21    2871.71     0.18
 13   1.0072   8440.42     0.07    2872.44     0.09
 14   1.0073   8433.79     0.05    2873.01     0.21
 15   4.1201  30834.59    -0.07   11952.07    -0.30
 16   4.1202  30829.01    -0.19   11952.72    -0.22
 17   4.9529  45804.77     0.22   14430.21    -0.33
 18   4.9529  45804.77     0.28   14430.21    -0.33
 19   4.9529  45804.61     0.31   14430.13    -0.43
 20  13.9958 140079.61     0.00   45851.31    -0.03
 21  13.9960 140073.32    -0.15   45852.79     0.42

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.

01VN71    quality flag:3

Type:           3:2E      3:2E      3:2E

axisobj        39.848    39.861    39.834
ecceobj         0.253     0.254     0.253
incobj         18.623    18.623    18.623
qmin           26.858    26.676    28.958
qmax           52.545    52.824    50.494
amean          39.455    39.455    39.455
amin           39.035    39.062    39.083
amax           39.988    39.967    39.914
emean           0.250     0.256     0.219
emin            0.168     0.169     0.165
emax            0.318     0.324     0.266
imean          16.858    16.530    18.221
imin           13.014    13.106    16.559
imax           19.781    19.883    19.972
excite_mean     0.385     0.385     0.383
fracstop        1.000     1.000     1.000
cjmean          2.882     2.882     2.884

libcent 0       180.8     179.6     180.8
libamp  0        55.9      61.7      53.6
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       124.7     271.0     191.5
kozaiamp        180.0     180.0     180.0