Orbit Fit and Astrometric record for 11UB412

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: 11UB412   
# Created Tue Oct 17 01:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   19
# Arc:   4.04y
# First observation: 2011/10/24
#  Last observation: 2015/11/08
Preliminary a, adot, b, bdot, g, gdot:
  -0.000048   0.020196  -0.000018   0.005347   0.022467   0.000000
# Chi-squared of fit:    13.22 DOF:   32 RMS:  0.15
# Min/Max residuals:    -0.31    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.374796E-05  2.026807E-02  4.072184E-06  5.362610E-03  2.275560E-02  1.052830E-03
# Covariance matrix:
  1.6957E-13 -1.9814E-13  1.4690E-14 -4.3099E-14  3.0446E-14 -2.0281E-12
 -1.9814E-13  5.8295E-13 -4.7271E-14  1.5016E-13  4.9501E-14  7.0766E-12
  1.4690E-14 -4.7271E-14  1.2192E-13 -5.9923E-14  1.3926E-15 -6.3330E-13
 -4.3099E-14  1.5016E-13 -5.9923E-14  9.8194E-14  1.4487E-14  2.0145E-12
  3.0446E-14  4.9501E-14  1.3926E-15  1.4487E-14  2.4162E-13  6.9843E-13
 -2.0281E-12  7.0766E-12 -6.3330E-13  2.0145E-12  6.9843E-13  9.4939E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    3.978081   28.858324   -0.029111    0.068743   -0.988447  2455858.925526
# Heliocentric elements and errors
Epoch:              2455850.5000  =  2011/10/16
Mean Anomaly:          115.21385 +/-     0.304
Argument of Peri:      253.98561 +/-     0.293
Long of Asc Node:       14.48232 +/-     0.001
Inclination:            15.28075 +/-     0.001
Eccentricity:         0.05664762 +/-    0.0004
Semi-Major Axis:     43.76924413 +/-    0.0057
Time of Perihelion: 2422000.8502 +/-      89.0
Perihelion:          41.28982059 +/-    0.0165
Aphelion:            46.24866768 +/-    0.0168
Period (y)              289.5755 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           39.25214975 +/-    0.0008
Ecliptic Y           21.66410151 +/-    0.0005
Ecliptic Z            3.04886329 +/-    0.0001
Ecliptic XDOT        -0.00110912 +/-    0.0000
Ecliptic YDOT         0.00218022 +/-    0.0000
Ecliptic ZDOT         0.00065251 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.93729099 +/-    0.0008
Geocenter to KBO     43.94523350 +/-    0.0009
# Hcoef:  8.02

The following table shows the complete astrometric record for 11UB412. 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 (11UB412) followed by the observatory code and reference code for the source of the astrometry.

2011 10  24.42476  01 41 26.878  +14 47 01.80  24.3r 11UB412   568  C~1C6P      
2011 10  24.46746  01 41 26.668  +14 47 00.85  24.4r 11UB412   568  C~1C6P      
2011 10  24.51022  01 41 26.468  +14 46 59.80        11UB412   568  C~1C6P      
2011 10  30.54650  01 40 59.160  +14 44 42.98  24.4r 11UB412   568  C~1C6P      
2011 11  24.21942  01 39 17.399  +14 35 37.03  24.0r 11UB412   568  C~1C6P      
2011 11  24.22808  01 39 17.368  +14 35 36.79  24.6r 11UB412   568  C~1C6P      
2011 11  24.23235  01 39 17.361  +14 35 36.67  24.5r 11UB412   568  C~1C6P      
2011 11  26.44523  01 39 09.480  +14 34 51.80  24.5r 11UB412   568  C~1C6P      
2012 01  25.24712  01 37 55.629  +14 25 53.44  24.1r 11UB412   568  C~1C6P      
2012 01  27.28902  01 37 58.541  +14 26 04.20  24.4r 11UB412   568  C~1C6P      
2012 08  17.60362  01 49 27.621  +15 43 57.33  24.2r 11UB412   568  C~1C6P      
2012 08  22.44017  01 49 19.053  +15 43 52.17        11UB412   568  C~1C6P      
2012 08  24.53923  01 49 14.735  +15 43 46.39  24.7r 11UB412   568  C~1C6P      
2012 10  17.38671  01 45 58.188  +15 31 30.52  24.6r 11UB412   568  C~1C6P      
2012 10  20.48174  01 45 44.058  +15 30 23.65  24.3r 11UB412   568  C~1C6P      
2013 01  14.35013  01 41 43.227  +15 07 04.94  24.4r 11UB412   568  C~1C6P      
2013 02  03.27546  01 42 07.686  +15 08 18.84  24.4r 11UB412   568  C~1C6P      
2015 11  08.14723  01 56 35.06   +17 28 04.2   24.4R 11UB412   G37  C~1ddG      
2015 11  08.21876  01 56 34.69   +17 28 02.7         11UB412   G37  C~1ddG      

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     0.07       0.00    -0.07
  2   0.0001     -3.18    -0.09       0.21     0.01
  3   0.0002     -6.27    -0.16       0.28    -0.06
  4   0.0168   -425.05    -0.28      15.47     0.16
  5   0.0843  -1999.27     0.04      40.53     0.08
  6   0.0843  -1999.77     0.03      40.47     0.01
  7   0.0843  -1999.91     0.13      40.39    -0.06
  8   0.0904  -2122.81     0.13      40.06    -0.09
  9   0.2541  -3317.78     0.04     -71.91     0.21
 10   0.2597  -3274.45    -0.01     -77.28     0.00
 11   0.8164   7720.67    -0.01     714.97     0.17
 12   0.8296   7602.89     0.19     753.68     0.16
 13   0.8354   7542.42    -0.15     770.22     0.13
 14   0.9828   4623.87    -0.02    1086.17    -0.16
 15   0.9913   4409.11     0.25    1096.28    -0.16
 16   1.2264    654.37    -0.12    1037.07    -0.18
 17   1.2809   1011.42     0.01     978.59    -0.24
 18   4.0403  15681.25     0.27    4447.42    -0.11
 19   4.0405  15675.73    -0.31    4447.83     0.21

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.

11UB412    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        43.852    43.869    43.834
ecceobj         0.057     0.057     0.056
incobj         15.265    15.265    15.265
qmin           40.382    40.366    40.390
qmax           46.999    46.987    46.913
amean          43.564    43.581    43.547
amin           43.227    43.246    43.217
amax           43.912    43.935    43.899
emean           0.057     0.058     0.057
emin            0.045     0.045     0.044
emax            0.070     0.071     0.069
imean          15.128    15.131    15.126
imin           14.697    14.703    14.688
imax           15.583    15.588    15.587
excite_mean     0.267     0.267     0.267
fracstop        1.000     1.000     1.000
cjmean          3.010     3.010     3.010

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       179.0     178.9     179.2
kozaiamp        180.0     180.0     179.9