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 Tue Oct 24 01:37:58 2017
# Orbit generated from Bernstein formalism
# Fitting   15 observations of   15
# Arc:   2.21y
# First observation: 2011/12/16
#  Last observation: 2014/03/02
Preliminary a, adot, b, bdot, g, gdot:
   0.000068   0.028277  -0.000008   0.012085   0.025794   0.000000
# Chi-squared of fit:     8.45 DOF:   24 RMS:  0.13
# Min/Max residuals:    -0.27    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.675541E-05  2.803368E-02  7.127564E-06  1.198922E-02  2.549267E-02 -2.458702E-03
# Covariance matrix:
  6.0429E-13  2.1244E-13 -4.3254E-14  7.5959E-14  8.3589E-13  2.4917E-12
  2.1244E-13  1.4148E-12 -1.8029E-13  7.3365E-13  1.2695E-12  2.6480E-11
 -4.3254E-14 -1.8029E-13  2.5873E-13 -2.3170E-13 -1.6935E-13 -3.7508E-12
  7.5959E-14  7.3365E-13 -2.3170E-13  5.8350E-13  5.1046E-13  1.6851E-11
  8.3589E-13  1.2695E-12 -1.6935E-13  5.1046E-13  2.1413E-12  1.7978E-11
  2.4917E-12  2.6480E-11 -3.7508E-12  1.6851E-11  1.7978E-11  6.1217E-10
#      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:          354.44010 +/-     0.044
Argument of Peri:       44.52440 +/-     0.140
Long of Asc Node:       96.83274 +/-     0.001
Inclination:            25.91595 +/-     0.001
Eccentricity:         0.46570407 +/-    0.0004
Semi-Major Axis:     73.78700633 +/-    0.0401
Time of Perihelion: 2459485.9688 +/-      28.3
Perihelion:          39.42409750 +/-    0.0343
Aphelion:           108.14991516 +/-    0.0646
Period (y)              633.8377 +/-      0.52
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -20.68572582 +/-    0.0012
Ecliptic Y           33.25437831 +/-    0.0019
Ecliptic Z            8.05773307 +/-    0.0005
Ecliptic XDOT        -0.00225221 +/-    0.0000
Ecliptic YDOT        -0.00206506 +/-    0.0000
Ecliptic ZDOT         0.00120600 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.98349649 +/-    0.0017
Geocenter to KBO     39.22695929 +/-    0.0023
# 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      

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     0.13       0.00     0.06
  2   0.0194   -422.59    -0.27     124.20    -0.20
  3   0.1175  -3023.92    -0.01     523.55     0.11
  4   0.1175  -3024.96     0.03     523.46    -0.05
  5   0.1175  -3026.03     0.04     523.49    -0.08
  6   0.1176  -3027.08     0.06     523.74     0.11
  7   1.1304   2447.26    -0.03    3037.76     0.15
  8   1.1305   2445.41     0.03    3037.46    -0.23
  9   1.1657   1507.15     0.09    3054.98    -0.02
 10   1.1657   1506.14    -0.06    3055.16     0.18
 11   2.0999   9171.79     0.09    5487.06     0.21
 12   2.2086   6344.33    -0.24    5503.27    -0.09
 13   2.2086   6343.91     0.02    5503.07    -0.22
 14   2.2086   6343.31     0.11    5503.40     0.18
 15   2.2087   6342.53     0.01    5503.03    -0.12

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        73.931    74.032    73.832
ecceobj         0.466     0.467     0.465
incobj         25.905    25.905    25.905
qmin           38.164    38.581    38.222
qmax          111.316   110.710   111.378
amean          73.745    73.731    73.635
amin           72.726    72.804    72.647
amax           75.123    75.126    75.174
emean           0.466     0.462     0.465
emin            0.451     0.447     0.449
emax            0.482     0.476     0.482
imean          24.281    24.620    24.289
imin           23.745    24.158    23.803
imax           25.014    25.265    25.021
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       177.7     166.6     182.1
kozaiamp        138.0     125.2     141.2