Orbit Fit and Astrometric record for 11YN79

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: 11YN79    
# Created Thu Oct 18 01:09:08 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   17 observations of   17
# Arc:   6.32y
# First observation: 2011/12/16
#  Last observation: 2018/04/10
# Chi-squared of fit:    12.34 DOF:   28 RMS:  0.15
# Min/Max residuals:    -0.30    0.24
# Exact a, adot, b, bdot, g, gdot:
  1.669982E-05  2.803324E-02  6.969953E-06  1.198923E-02  2.549219E-02 -2.466583E-03
# Covariance matrix:
  5.9206E-13  9.8590E-14 -3.8983E-14  1.8718E-14  7.5378E-13 -4.2747E-14
  9.8590E-14  3.3129E-13 -9.9943E-14  1.2682E-13  5.1503E-13  1.5353E-12
 -3.8983E-14 -9.9943E-14  1.8571E-13 -8.1891E-14 -1.5890E-13 -5.1055E-13
  1.8718E-14  1.2682E-13 -8.1891E-14  7.9821E-14  1.5902E-13  7.0785E-13
  7.5378E-13  5.1503E-13 -1.5890E-13  1.5902E-13  1.5851E-12  1.5518E-12
 -4.2747E-14  1.5353E-12 -5.1055E-13  7.0785E-13  1.5518E-12  9.0950E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   11.853313  122.783233    0.612176    0.157901   -0.752214  2455912.059246
# Heliocentric elements and errors
Epoch:              2455912.5000  =  2011/12/17
Mean Anomaly:          354.43128 +/-     0.006
Argument of Peri:       44.56742 +/-     0.017
Long of Asc Node:       96.83317 +/-     0.000
Inclination:            25.91630 +/-     0.000
Eccentricity:         0.46584562 +/-    0.0002
Semi-Major Axis:     73.80240997 +/-    0.0288
Time of Perihelion: 2459494.7611 +/-     133.4
Perihelion:          39.42188080 +/-    0.0206
Aphelion:           108.18293914 +/-    0.0443
Period (y)              634.0361 +/-      0.37
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.68611554 +/-    0.0010
Ecliptic Y           33.25498744 +/-    0.0016
Ecliptic Z            8.05787853 +/-    0.0004
Ecliptic XDOT        -0.00225176 +/-    0.0000
Ecliptic YDOT        -0.00206577 +/-    0.0000
Ecliptic ZDOT         0.00120585 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.98430408 +/-    0.0014
Geocenter to KBO     39.22778908 +/-    0.0019
# Hcoef:  6.08

The following table shows the complete astrometric record for 11YN79. 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 (11YN79) followed by the observatory code and reference code for the source of the astrometry.

2011 12  16.55848  08 32 50.058  +31 02 50.71  21.8i 11YN79    F51  C~1w3o      
2011 12  23.63588  08 32 20.641  +31 06 36.95  22.2r 11YN79    F51  C~1w3o      
2012 01  28.46517  08 29 11.764  +31 23 46.07  22.0w 11YN79    F51  C~1w3o      
2012 01  28.47918  08 29 11.683  +31 23 46.24  22.1w 11YN79    F51  C~1w3o      
2012 01  28.49314  08 29 11.603  +31 23 46.53  22.1w 11YN79    F51  C~1w3o      
2012 01  28.50707  08 29 11.528  +31 23 47.03  22.1w 11YN79    F51  C~1w3o      
2013 02  01.43422  08 36 55.438  +31 41 20.90  21.7r 11YN79    F51  C~1w3o      
2013 02  01.45917  08 36 55.292  +31 41 21.09  21.2i 11YN79    F51  C~1w3o      
2013 02  14.31611  08 35 44.636  +31 45 41.11  21.8r 11YN79    F51  C~1w3p      
2013 02  14.32816  08 35 44.563  +31 45 41.55  22.0r 11YN79    F51  C~1w3p      
2014 01  21.53596  08 46 14.316  +31 50 17.33  21.9r 11YN79    F51  C~1w3p      
2014 03  02.24436  08 42 41.620  +32 03 35.99  21.9w 11YN79    F51  C~1w3p      
2014 03  02.25583  08 42 41.584  +32 03 35.91  22.0w 11YN79    F51  C~1w3p      
2014 03  02.26730  08 42 41.546  +32 03 36.39  21.9w 11YN79    F51  C~1w3p      
2014 03  02.27876  08 42 41.479  +32 03 36.25  21.9w 11YN79    F51  C~1w3p      
2018 04  10.13799  09 14 01.334  +32 43 09.57  21.9R 11YN79    G37  C~2bGn      
2018 04  10.26692  09 14 01.098  +32 43 08.46        11YN79    G37  C~2bGn      

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     0.23       0.00     0.03
  2   0.0194      0.00    -0.30       0.00    -0.12
  3   0.1175      0.00     0.05       0.00     0.13
  4   0.1175      0.00     0.05       0.00    -0.02
  5   0.1175      0.00     0.05       0.00    -0.06
  6   0.1176      0.00     0.13       0.00     0.11
  7   1.1304      0.00     0.11       0.00     0.14
  8   1.1305      0.00     0.07       0.00    -0.25
  9   1.1657      0.00     0.19       0.00    -0.05
 10   1.1657      0.00     0.07       0.00     0.18
 11   2.0999      0.00     0.24       0.00     0.10
 12   2.2086      0.00    -0.27       0.00    -0.10
 13   2.2086      0.00    -0.01       0.00    -0.30
 14   2.2086      0.00     0.22       0.00     0.07
 15   2.2087      0.00     0.01       0.00    -0.19
 16   6.3151      0.00     0.04       0.00    -0.07
 17   6.3154      0.00     0.00       0.00     0.20

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.

11YN79    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        73.944    73.943    73.944
ecceobj         0.466     0.466     0.466
incobj         25.906    25.906    25.906
qmin           37.894    38.101    38.201
qmax          111.678   111.401   110.835
amean          73.760    73.752    73.654
amin           72.792    72.772    72.662
amax           75.152    75.151    75.026
emean           0.468     0.467     0.465
emin            0.455     0.451     0.449
emax            0.486     0.483     0.480
imean          24.129    24.242    24.328
imin           23.424    23.672    23.810
imax           24.751    24.995    25.049
excite_mean     0.622     0.622     0.621
fracstop        1.000     1.000     1.000
cjmean          2.932     2.932     2.932

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       170.6     179.7     179.4
kozaiamp        131.5     139.3     134.4