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 Sun Jul 22 01:37:57 2018
# Orbit generated from Bernstein formalism
# Fitting   17 observations of   17
# Arc:   6.32y
# First observation: 2011/12/16
#  Last observation: 2018/04/10
Preliminary a, adot, b, bdot, g, gdot:
   0.000069   0.028346  -0.000047   0.012125   0.025878   0.000000
# Chi-squared of fit:     9.78 DOF:   28 RMS:  0.13
# Min/Max residuals:    -0.29    0.18
# Exact a, adot, b, bdot, g, gdot:
  1.669054E-05  2.803317E-02  6.982451E-06  1.198922E-02  2.549219E-02 -2.466709E-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:              2455910.5000  =  2011/12/15
Mean Anomaly:          354.42778 +/-     0.006
Argument of Peri:       44.56831 +/-     0.017
Long of Asc Node:       96.83319 +/-     0.000
Inclination:            25.91632 +/-     0.000
Eccentricity:         0.46584061 +/-    0.0002
Semi-Major Axis:     73.80161768 +/-    0.0288
Time of Perihelion: 2459494.9546 +/-       3.5
Perihelion:          39.42182739 +/-    0.0206
Aphelion:           108.18140797 +/-    0.0443
Period (y)              634.0259 +/-      0.37
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.68611628 +/-    0.0010
Ecliptic Y           33.25498926 +/-    0.0016
Ecliptic Z            8.05787944 +/-    0.0004
Ecliptic XDOT        -0.00225175 +/-    0.0000
Ecliptic YDOT        -0.00206578 +/-    0.0000
Ecliptic ZDOT         0.00120584 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.98423613 +/-    0.0014
Geocenter to KBO     39.22769895 +/-    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     0.14       0.00     0.09
  2   0.0194   -422.59    -0.27     124.20    -0.17
  3   0.1175  -3023.92    -0.05     523.55     0.14
  4   0.1175  -3024.96    -0.01     523.46    -0.01
  5   0.1175  -3026.03     0.00     523.49    -0.05
  6   0.1176  -3027.08     0.02     523.74     0.14
  7   1.1304   2447.26    -0.00    3037.76     0.16
  8   1.1305   2445.41     0.06    3037.46    -0.22
  9   1.1657   1507.15     0.12    3054.98    -0.01
 10   1.1657   1506.14    -0.04    3055.16     0.18
 11   2.0999   9171.79     0.12    5487.06     0.16
 12   2.2086   6344.33    -0.23    5503.27    -0.16
 13   2.2086   6343.91     0.03    5503.07    -0.29
 14   2.2086   6343.31     0.12    5503.40     0.11
 15   2.2087   6342.53     0.02    5503.03    -0.19
 16   6.3151  28491.09     0.04   15201.08    -0.07
 17   6.3154  28488.61    -0.08   15198.97     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.

11YN79    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        73.946    74.027    73.866
ecceobj         0.466     0.467     0.466
incobj         25.906    25.906    25.905
qmin           37.999    38.046    38.209
qmax          111.391   111.304   111.111
amean          73.708    73.724    73.696
amin           72.677    72.703    72.694
amax           75.117    75.042    75.158
emean           0.468     0.466     0.465
emin            0.453     0.453     0.451
emax            0.483     0.483     0.480
imean          24.086    24.268    24.401
imin           23.522    23.558    23.817
imax           24.771    24.880    25.005
excite_mean     0.621     0.622     0.622
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       182.2     161.4     173.4
kozaiamp        140.6     126.9     129.8