Orbit Fit and Astrometric record for VNH0034

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: VNH0034   
# Created Sun Oct 22 01:38:46 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:  94.05d
# First observation: 2013/06/05
#  Last observation: 2013/09/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000003   0.031022  -0.000004  -0.000469   0.024569   0.000000
# Chi-squared of fit:    11.91 DOF:   30 RMS:  0.14
# Min/Max residuals:    -0.30    0.60
# Exact a, adot, b, bdot, g, gdot:
  1.450006E-05  2.162242E-02 -2.619380E-07 -5.945841E-04  2.297278E-02 -1.099321E-03
# Covariance matrix:
  1.4387E-13 -1.4738E-11  6.7347E-15 -2.1818E-13 -1.7252E-12  2.1253E-10
 -1.4738E-11  8.4688E-08 -4.0662E-11  1.1807E-09  1.2717E-08 -7.4948E-07
  6.7347E-15 -4.0662E-11  1.3016E-13 -1.3534E-12 -6.1071E-12  3.6005E-10
 -2.1818E-13  1.1807E-09 -1.3534E-12  3.7769E-11  1.7706E-10 -1.0519E-08
 -1.7252E-12  1.2717E-08 -6.1071E-12  1.7706E-10  1.9146E-09 -1.1151E-07
  2.1253E-10 -7.4948E-07  3.6005E-10 -1.0519E-08 -1.1151E-07  6.8908E-06
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.610359  -80.568890    0.427467    0.042076   -0.922078  2456448.750798
# Heliocentric elements and errors
Epoch:              2456440.5000  =  2013/05/28
Mean Anomaly:          269.71394 +/-    36.004
Argument of Peri:      218.49005 +/-    32.183
Long of Asc Node:      157.56809 +/-     0.438
Inclination:             2.99131 +/-     0.014
Eccentricity:         0.06084746 +/-    0.1180
Semi-Major Axis:     44.27586276 +/-    1.3902
Time of Perihelion: 2483428.2813 +/-   10686.8
Perihelion:          41.58178877 +/-    5.3872
Aphelion:            46.96993675 +/-    5.4307
Period (y)              294.6176 +/-     13.88
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            6.85595467 +/-    0.0136
Ecliptic Y          -43.87480704 +/-    0.0817
Ecliptic Z            1.98251735 +/-    0.0038
Ecliptic XDOT         0.00251485 +/-    0.0000
Ecliptic YDOT         0.00054792 +/-    0.0003
Ecliptic ZDOT        -0.00007661 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.45146997 +/-    0.0807
Geocenter to KBO     43.52978001 +/-    0.0829
# Hcoef: 12.31

The following table shows the complete astrometric record for VNH0034. 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 (VNH0034) followed by the observatory code and reference code for the source of the astrometry.

2013 06  05.25002  18 40 15.508  -20 30 00.12        VNH0034   304              
2013 06  05.31181  18 40 15.234  -20 30 00.22        VNH0034   304              
2013 06  05.36937  18 40 15.002  -20 30 00.57  29.0R VNH0034   304              
2013 06  06.24369  18 40 11.220  -20 30 03.20  28.3R VNH0034   304              
2013 06  06.30303  18 40 10.954  -20 30 03.36        VNH0034   304              
2013 06  06.36592  18 40 10.675  -20 30 03.43  29.6R VNH0034   304              
2013 06  09.16882  18 39 58.352  -20 30 12.53  28.1R VNH0034   304              
2013 06  09.16986  18 39 58.344  -20 30 12.33  26.0R VNH0034   304              
2013 06  09.20547  18 39 58.185  -20 30 12.61  28.9R VNH0034   304              
2013 06  09.21041  18 39 58.148  -20 30 12.51        VNH0034   304              
2013 06  09.26181  18 39 57.931  -20 30 12.81  29.6R VNH0034   304              
2013 06  09.29749  18 39 57.776  -20 30 12.96  28.7R VNH0034   304              
2013 06  09.30355  18 39 57.747  -20 30 12.96        VNH0034   304              
2013 07  05.48837  18 37 53.834  -20 32 04.73  27.6R VNH0034   568              
2013 07  06.31422  18 37 49.873  -20 32 09.58  26.8R VNH0034   568              
2013 07  06.40236  18 37 49.445  -20 32 10.09  29.1R VNH0034   568              
2013 07  06.48552  18 37 49.041  -20 32 10.44  29.4R VNH0034   568              
2013 09  07.29851  18 34 09.971  -20 37 52.05        VNH0034   568              

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     0.08       0.00    -0.03
  2   0.0002     -3.85     0.04       0.17     0.06
  3   0.0003     -7.12     0.30       0.05    -0.15
  4   0.0027    -60.31     0.11       1.12    -0.11
  5   0.0029    -64.05     0.06       1.22    -0.08
  6   0.0031    -67.97     0.05       1.42     0.03
  7   0.0107   -241.32    -0.09       4.34    -0.07
  8   0.0107   -241.42    -0.12       4.55     0.13
  9   0.0108   -243.67    -0.11       4.42    -0.02
 10   0.0108   -244.18    -0.30       4.56     0.11
 11   0.0110   -247.24    -0.09       4.47    -0.03
 12   0.0111   -249.42     0.00       4.47    -0.07
 13   0.0111   -249.83    -0.02       4.50    -0.05
 14   0.0828  -1994.24    -0.02      10.59     0.60
 15   0.0850  -2050.08    -0.00       9.42    -0.05
 16   0.0853  -2056.11     0.04       9.31    -0.10
 17   0.0855  -2061.80     0.09       9.33    -0.03
 18   0.2575  -5154.49    -0.01    -137.62    -0.13

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.

VNH0034    quality flag:1

Type:      CLASSICAL  SCATNEAR CLASSICAL

axisobj        44.286    55.827    43.118
ecceobj         0.064     0.415     0.085
incobj          2.989     2.954     3.015
qmin           40.764    31.579    38.683
qmax           48.410    80.716    48.265
amean          44.492    49.490    43.354
amin           44.137    46.579    43.010
amax           44.860    56.729    43.709
emean           0.065     0.327     0.083
emin            0.050     0.275     0.064
emax            0.080     0.423     0.105
imean           2.903     6.558     3.082
imin            2.290     2.291     1.936
imax            3.514     9.475     4.061
excite_mean     0.083     0.349     0.100
fracstop        1.000     1.000     1.000
cjmean          3.099     3.011     3.082

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       179.1     185.6     180.1
kozaiamp        179.9     180.0     180.0