Orbit Fit and Astrometric record for 15OV79

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: 15OV79    
# Created Sat Oct 21 01:38:35 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc:   1.07y
# First observation: 2014/07/02
#  Last observation: 2015/07/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.022010   0.000001  -0.010893   0.025079   0.000000
# Chi-squared of fit:     3.82 DOF:   26 RMS:  0.09
# Min/Max residuals:    -0.15    0.28
# Exact a, adot, b, bdot, g, gdot:
  1.392854E-05  2.185672E-02 -6.379571E-06 -1.081417E-02  2.492032E-02 -1.165501E-03
# Covariance matrix:
  3.6553E-13 -6.8232E-13  6.6924E-15  5.2412E-13  6.8750E-13 -3.7237E-11
 -6.8232E-13  1.3380E-10  4.5097E-12 -1.0886E-10  3.5920E-11  8.1407E-09
  6.6924E-15  4.5097E-12  3.5231E-13 -3.8521E-12  1.3282E-12  2.7408E-10
  5.2412E-13 -1.0886E-10 -3.8521E-12  8.9231E-11 -2.8695E-11 -6.6457E-09
  6.8750E-13  3.5920E-11  1.3282E-12 -2.8695E-11  1.3691E-11  2.1555E-09
 -3.7237E-11  8.1407E-09  2.7408E-10 -6.6457E-09  2.1555E-09  4.9689E-07
#      lat0       lon0       xBary       yBary       zBary        JD0
  -15.420655  -33.819592    0.729136   -0.189122   -0.685860  2456841.043348
# Heliocentric elements and errors
Epoch:              2456840.5000  =  2014/07/02
Mean Anomaly:          264.05478 +/-     4.388
Argument of Peri:      314.65022 +/-     4.140
Long of Asc Node:      117.64028 +/-     0.002
Inclination:            30.40886 +/-     0.002
Eccentricity:         0.06757282 +/-    0.0281
Semi-Major Axis:     40.35592218 +/-    0.0842
Time of Perihelion: 2481796.7994 +/-    1138.6
Perihelion:          37.62895862 +/-    1.1370
Aphelion:            43.08288574 +/-    1.1378
Period (y)              256.3711 +/-      0.80
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           32.32134419 +/-    0.0048
Ecliptic Y          -22.52987432 +/-    0.0032
Ecliptic Z          -10.67034319 +/-    0.0016
Ecliptic XDOT         0.00096637 +/-    0.0001
Ecliptic YDOT         0.00223562 +/-    0.0000
Ecliptic ZDOT        -0.00111115 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.81814242 +/-    0.0042
Geocenter to KBO     40.12789653 +/-    0.0060
# Hcoef:  5.84

The following table shows the complete astrometric record for 15OV79. 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 (15OV79) followed by the observatory code and reference code for the source of the astrometry.

2014 07  02.54257  22 16 57.261  -27 13 06.87  21.9w 15OV79    F51  C~1vYk      
2014 07  02.55248  22 16 57.221  -27 13 06.91  22.1w 15OV79    F51  C~1vYk      
2014 07  02.56237  22 16 57.210  -27 13 07.57  22.0w 15OV79    F51  C~1vYk      
2014 07  02.57228  22 16 57.176  -27 13 08.06  21.7w 15OV79    F51  C~1vYk      
2014 07  31.50261  22 15 08.179  -27 32 15.37  22.1w 15OV79    F51  C~1vYk      
2014 07  31.51260  22 15 08.140  -27 32 15.74  22.1w 15OV79    F51  C~1vYk      
2014 07  31.52256  22 15 08.105  -27 32 15.98  21.8w 15OV79    F51  C~1vYk      
2014 07  31.53251  22 15 08.055  -27 32 16.58  22.3w 15OV79    F51  C~1vYk      
2015 07  26.50122  22 21 50.581  -27 35 16.04  21.9w 15OV79    F51  C~1vYk      
2015 07  26.51144  22 21 50.542  -27 35 16.56  21.9w 15OV79    F51  C~1vYk      
2015 07  26.52179  22 21 50.500  -27 35 16.97  22.1w 15OV79    F51  C~1vYk      
2015 07  26.53208  22 21 50.453  -27 35 17.30  22.1w 15OV79    F51  C~1vYk      
2015 07  27.54616  22 21 46.093  -27 35 58.14  22.1w 15OV79    F51  C~1vYk      
2015 07  27.55678  22 21 46.037  -27 35 58.48  22.0w 15OV79    F51  C~1vYk      
2015 07  27.56740  22 21 45.994  -27 35 58.88  22.0w 15OV79    F51  C~1vYk      
2015 07  27.57793  22 21 45.942  -27 35 59.49  22.3w 15OV79    F51  C~1vYk      

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    -0.01       0.00    -0.10
  2   0.0000     -0.51    -0.03       0.16     0.28
  3   0.0001     -0.89     0.08      -0.40    -0.05
  4   0.0001     -1.49    -0.04      -0.68    -0.12
  5   0.0793  -1774.79    -0.15    -529.55     0.03
  6   0.0793  -1775.41    -0.04    -529.70     0.00
  7   0.0793  -1775.93     0.16    -529.75     0.08
  8   0.0794  -1776.77     0.04    -530.06    -0.11
  9   1.0649   3119.62    -0.03   -2701.22     0.07
 10   1.0649   3118.94    -0.00   -2701.50    -0.06
 11   1.0650   3118.27     0.04   -2701.67    -0.07
 12   1.0650   3117.57     0.05   -2701.74     0.02
 13   1.0678   3048.40     0.05   -2717.44    -0.05
 14   1.0678   3047.59    -0.03   -2717.47     0.08
 15   1.0678   3046.90     0.03   -2717.62     0.08
 16   1.0679   3046.03    -0.11   -2717.92    -0.07

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.

15OV79    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.550    40.911    40.501
ecceobj         0.068     0.145     0.052
incobj         30.367    30.363    30.367
qmin           37.170    33.804    37.825
qmax           44.037    48.246    43.368
amean          40.517    40.901    40.477
amin           40.209    40.563    40.171
amax           40.839    41.305    40.802
emean           0.066     0.148     0.051
emin            0.056     0.129     0.041
emax            0.079     0.170     0.063
imean          28.809    28.746    28.810
imin           28.427    28.195    28.445
imax           29.178    29.141    29.165
excite_mean     0.486     0.503     0.485
fracstop        1.000     1.000     1.000
cjmean          2.771     2.757     2.773

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       178.4     182.1     177.5
kozaiamp        180.0     180.0     179.9