Orbit Fit and Astrometric record for 11UF412

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: 11UF412   
# Created Wed Dec 13 02:37:42 2017
# Orbit generated from Bernstein formalism
# Fitting   12 observations of   12
# Arc:   1.15y
# First observation: 2011/08/29
#  Last observation: 2012/10/21
Preliminary a, adot, b, bdot, g, gdot:
  -0.000062   0.020708   0.000002   0.000134   0.022312   0.000000
# Chi-squared of fit:     3.65 DOF:   18 RMS:  0.10
# Min/Max residuals:    -0.20    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.470588E-05  2.055469E-02  4.789440E-07  1.327107E-04  2.220199E-02  4.680952E-04
# Covariance matrix:
  6.8315E-13  4.7734E-13 -1.2196E-14  2.5081E-14  9.9388E-13  5.9398E-11
  4.7734E-13  4.1981E-12 -3.5421E-14  1.3039E-13  2.6924E-12  2.9502E-10
 -1.2196E-14 -3.5421E-14  2.3697E-13 -2.5491E-13 -3.3875E-14 -2.8720E-12
  2.5081E-14  1.3039E-13 -2.5491E-13  5.6000E-13  9.4731E-14  1.0559E-11
  9.9388E-13  2.6924E-12 -3.3875E-14  9.4731E-14  2.6760E-12  2.1835E-10
  5.9398E-11  2.9502E-10 -2.8720E-12  1.0559E-11  2.1835E-10  2.3893E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
    2.131546   34.020953    0.857741    0.019592   -0.527060  2455803.077416
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          140.55493 +/-    53.622
Argument of Peri:      297.95975 +/-    53.600
Long of Asc Node:      313.96359 +/-     0.055
Inclination:             2.14595 +/-     0.000
Eccentricity:         0.00638405 +/-    0.0045
Semi-Major Axis:     45.35524143 +/-    0.0144
Time of Perihelion: 2412240.9658 +/-   16618.1
Perihelion:          45.06569130 +/-    0.2036
Aphelion:            45.64479156 +/-    0.2036
Period (y)              305.4565 +/-      0.15
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           38.22601623 +/-    0.0028
Ecliptic Y           24.76824262 +/-    0.0018
Ecliptic Z            1.67528997 +/-    0.0001
Ecliptic XDOT        -0.00137401 +/-    0.0000
Ecliptic YDOT         0.00213819 +/-    0.0000
Ecliptic ZDOT         0.00001856 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   45.57960899 +/-    0.0025
Geocenter to KBO     45.04099917 +/-    0.0033
# Hcoef:  8.28

The following table shows the complete astrometric record for 11UF412. 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 (11UF412) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.57665  02 04 06.207  +14 51 50.39  25.0r 11UF412   568  C~1C6P      
2011 08  29.62382  02 04 06.111  +14 51 50.11  24.9r 11UF412   568  C~1C6P      
2011 10  24.44181  02 00 47.633  +14 35 48.25  24.5r 11UF412   568  C~1C6P      
2011 10  24.48455  02 00 47.433  +14 35 47.26  24.4r 11UF412   568  C~1C6P      
2011 10  24.52730  02 00 47.236  +14 35 46.33  24.4r 11UF412   568  C~1C6P      
2011 10  30.56385  02 00 20.582  +14 33 24.84  24.4r 11UF412   568  C~1C6P      
2011 10  31.54671  02 00 16.240  +14 33 01.40  24.8r 11UF412   568  C~1C6P      
2011 11  30.34681  01 58 16.412  +14 21 50.45  24.6r 11UF412   568  C~1C6P      
2012 08  24.48353  02 08 49.258  +15 16 43.21  25.0r 11UF412   568  C~1C6P      
2012 10  21.31465  02 05 35.677  +15 01 37.96  25.0r 11UF412   568  C~1C6P      
2012 10  21.34035  02 05 35.565  +15 01 37.31  24.6r 11UF412   568  C~1C6P      
2012 10  21.36603  02 05 35.447  +15 01 36.76  24.5r 11UF412   568  C~1C6P      

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    -0.08
  2   0.0001     -1.40     0.06       0.21    -0.00
  3   0.1530  -3036.20     0.05      83.79    -0.17
  4   0.1531  -3039.27    -0.05      83.86    -0.13
  5   0.1532  -3042.27    -0.10      83.97    -0.03
  6   0.1697  -3454.37     0.13      84.57     0.23
  7   0.1724  -3521.65    -0.20      84.32     0.11
  8   0.2540  -5387.68     0.12      57.26     0.09
  9   0.9881   4363.66     0.03      16.48     0.06
 10   1.1464   1419.24    -0.01     111.23     0.02
 11   1.1465   1417.49     0.01     111.17    -0.07
 12   1.1466   1415.69    -0.02     111.23    -0.02

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.

11UF412    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.453    45.523    45.414
ecceobj         0.006     0.026     0.010
incobj          2.146     2.146     2.146
qmin           43.933    43.370    43.567
qmax           46.452    47.209    46.737
amean          45.129    45.196    45.091
amin           44.777    44.844    44.734
amax           45.478    45.554    45.441
emean           0.010     0.024     0.016
emin            0.000     0.010     0.003
emax            0.022     0.037     0.029
imean           3.637     3.640     3.636
imin            3.166     3.170     3.155
imax            4.017     4.019     4.020
excite_mean     0.064     0.068     0.066
fracstop        1.000     1.000     1.000
cjmean          3.110     3.110     3.109

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       190.1     174.5     178.4
kozaiamp        180.0     180.0     180.0