Orbit Fit and Astrometric record for 11UG411

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: 11UG411   
# Created Tue Oct 17 01:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:   1.28y
# First observation: 2011/10/25
#  Last observation: 2013/02/03
Preliminary a, adot, b, bdot, g, gdot:
   0.000023   0.024388  -0.000001  -0.004010   0.024096   0.000000
# Chi-squared of fit:     7.18 DOF:   30 RMS:  0.11
# Min/Max residuals:    -0.27    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.639457E-05  2.462877E-02 -2.885906E-06 -4.084317E-03  2.438789E-02  1.774810E-03
# Covariance matrix:
  2.1349E-13  3.9026E-13  1.3591E-14 -1.3310E-13  4.6400E-13  2.5909E-11
  3.9026E-13  5.6630E-12  1.2647E-13 -1.3123E-12  4.0328E-12  2.5251E-10
  1.3591E-14  1.2647E-13  1.5228E-13 -1.8511E-13  9.9817E-14  6.0198E-12
 -1.3310E-13 -1.3123E-12 -1.8511E-13  6.8221E-13 -9.8853E-13 -6.2456E-11
  4.6400E-13  4.0328E-12  9.9817E-14 -9.8853E-13  3.3655E-12  1.9199E-10
  2.5909E-11  2.5251E-10  6.0198E-12 -6.2456E-11  1.9199E-10  1.2018E-08
#      lat0       lon0       xBary       yBary       zBary        JD0
    5.223876   30.598394   -0.014933    0.090218   -0.986796  2455859.847326
# Heliocentric elements and errors
Epoch:              2455850.5000  =  2011/10/16
Mean Anomaly:           25.37366 +/-     1.142
Argument of Peri:      117.51371 +/-     1.629
Long of Asc Node:      238.88951 +/-     0.003
Inclination:            10.67139 +/-     0.001
Eccentricity:         0.14379939 +/-    0.0027
Semi-Major Axis:     48.00537706 +/-    0.0337
Time of Perihelion: 2447287.7386 +/-     385.4
Perihelion:          41.10223327 +/-    0.1326
Aphelion:            54.90852086 +/-    0.1350
Period (y)              332.6159 +/-      0.35
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           35.99633308 +/-    0.0026
Ecliptic Y           21.30386470 +/-    0.0016
Ecliptic Z            3.73319099 +/-    0.0003
Ecliptic XDOT        -0.00120429 +/-    0.0000
Ecliptic YDOT         0.00250725 +/-    0.0000
Ecliptic ZDOT        -0.00043840 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.99437297 +/-    0.0024
Geocenter to KBO     41.00396101 +/-    0.0031
# Hcoef:  8.72

The following table shows the complete astrometric record for 11UG411. 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 (11UG411) followed by the observatory code and reference code for the source of the astrometry.

2011 10  25.34656  01 46 19.042  +16 34 08.22  24.6r 11UG411   568  C~1C6N      
2011 10  25.39635  01 46 18.810  +16 34 06.75        11UG411   568  C~1C6N      
2011 10  25.40523  01 46 18.750  +16 34 06.61  24.4r 11UG411   568  C~1C6N      
2011 10  26.30517  01 46 14.568  +16 33 40.62  24.7r 11UG411   568  C~1C6N      
2011 10  26.34841  01 46 14.368  +16 33 39.68  24.8r 11UG411   568  C~1C6N      
2011 10  26.39151  01 46 14.160  +16 33 38.40  24.4r 11UG411   568  C~1C6N      
2011 10  31.39702  01 45 50.884  +16 31 13.97  25.5r 11UG411   568  C~1C6N      
2011 11  24.25792  01 44 09.322  +16 19 46.40        11UG411   568  C~1C6N      
2011 11  26.47841  01 44 01.137  +16 18 45.54  24.7r 11UG411   568  C~1C6N      
2012 01  25.30732  01 42 49.387  +16 02 37.26  25.0r 11UG411   568  C~1C6N      
2012 01  27.22612  01 42 52.560  +16 02 35.01  24.7r 11UG411   568  C~1C6N      
2012 08  24.45714  01 55 59.347  +17 10 07.67  24.8r 11UG411   568  C~1C6N      
2012 08  27.55400  01 55 53.049  +17 09 47.20        11UG411   568  C~1C6N      
2012 10  21.33604  01 52 25.906  +16 52 30.43  24.6r 11UG411   568  C~1C6N      
2012 10  21.36172  01 52 25.788  +16 52 29.86        11UG411   568  C~1C6N      
2012 10  21.38781  01 52 25.656  +16 52 28.99  25.1r 11UG411   568  C~1C6N      
2013 01  14.32680  01 48 21.481  +16 20 19.14        11UG411   568  C~1C6N      
2013 02  03.29696  01 48 49.256  +16 19 31.00        11UG411   568  C~1C6N      

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    -0.09       0.00     0.05
  2   0.0001     -3.64    -0.03      -0.18    -0.03
  3   0.0002     -4.50    -0.23      -0.00     0.16
  4   0.0026    -69.94    -0.03      -2.80    -0.23
  5   0.0027    -72.96     0.15      -2.65     0.01
  6   0.0029    -76.21     0.09      -2.77    -0.02
  7   0.0166   -440.42     0.19     -17.99    -0.11
  8   0.0819  -2051.14     0.00    -135.58     0.03
  9   0.0880  -2182.99    -0.10    -149.97     0.09
 10   0.2518  -3496.47     0.09    -680.53     0.05
 11   0.2570  -3454.62    -0.06    -699.15     0.11
 12   0.8326   8562.36     0.04    -907.15    -0.07
 13   0.8411   8470.43    -0.08    -895.12    -0.09
 14   0.9911   5320.66     0.02    -833.00    -0.05
 15   0.9911   5318.88     0.13    -832.94     0.05
 16   0.9912   5316.80    -0.03    -833.09    -0.06
 17   1.2238   1350.80     0.21   -1401.91     0.01
 18   1.2784   1707.60    -0.27   -1588.72     0.11

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.

11UG411    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        48.118    48.235    48.018
ecceobj         0.146     0.154     0.139
incobj         10.667    10.667    10.667
qmin           38.062    39.224    39.231
qmax           57.561    56.798    57.121
amean          47.797    47.798    47.796
amin           47.304    47.363    47.219
amax           48.333    48.292    48.440
emean           0.147     0.147     0.148
emin            0.082     0.112     0.113
emax            0.200     0.177     0.180
imean          11.859    12.067    11.400
imin           10.308    11.343    10.575
imax           13.152    12.896    12.421
excite_mean     0.254     0.256     0.247
fracstop        1.000     1.000     1.000
cjmean          3.068     3.066     3.072

libcent 0       109.0      88.4     183.2
libamp  0        61.1      23.5     160.0
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       193.9     182.9     172.6
kozaiamp        180.0     180.0     180.0