Orbit Fit and Astrometric record for 11UH411

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: 11UH411   
# Created Mon Dec 18 02:37:42 2017
# Orbit generated from Bernstein formalism
# Fitting   18 observations of   18
# Arc:   1.45y
# First observation: 2011/08/29
#  Last observation: 2013/02/09
Preliminary a, adot, b, bdot, g, gdot:
  -0.000259   0.029799  -0.000007  -0.015029   0.028241   0.000000
# Chi-squared of fit:     6.61 DOF:   30 RMS:  0.11
# Min/Max residuals:    -0.23    0.21
# Exact a, adot, b, bdot, g, gdot:
  1.584604E-05  2.960866E-02 -7.483524E-06 -1.508129E-02  2.851347E-02 -1.743788E-03
# Covariance matrix:
  4.3166E-13  2.1113E-13  5.7769E-14 -4.2282E-13  5.3026E-13  2.1486E-11
  2.1113E-13  1.2849E-12  1.4019E-13 -1.0157E-12  9.3666E-13  5.1497E-11
  5.7769E-14  1.4019E-13  1.8627E-13 -3.4484E-13  1.4303E-13  8.2494E-12
 -4.2282E-13 -1.0157E-12 -3.4484E-13  1.5798E-12 -1.0415E-12 -5.9702E-11
  5.3026E-13  9.3666E-13  1.4303E-13 -1.0415E-12  1.1316E-12  5.2865E-11
  2.1486E-11  5.1497E-11  8.2494E-12 -5.9702E-11  5.2865E-11  3.0263E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.728110   32.073633    0.840134    0.016707   -0.554850  2455802.994996
# Heliocentric elements and errors
Epoch:              2455800.5000  =  2011/08/27
Mean Anomaly:          347.15782 +/-     0.257
Argument of Peri:      197.83875 +/-     0.448
Long of Asc Node:      214.06209 +/-     0.000
Inclination:            26.98962 +/-     0.001
Eccentricity:         0.24421990 +/-    0.0007
Semi-Major Axis:     46.50659682 +/-    0.0168
Time of Perihelion: 2459932.9390 +/-      82.7
Perihelion:          35.14876057 +/-    0.0347
Aphelion:            57.86443306 +/-    0.0385
Period (y)              317.1612 +/-      0.17
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.62449690 +/-    0.0011
Ecliptic Y           18.19864978 +/-    0.0007
Ecliptic Z            1.05739044 +/-    0.0000
Ecliptic XDOT        -0.00161762 +/-    0.0000
Ecliptic YDOT         0.00234879 +/-    0.0000
Ecliptic ZDOT        -0.00145243 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.63942674 +/-    0.0010
Geocenter to KBO     35.07114145 +/-    0.0013
# Hcoef:  8.64

The following table shows the complete astrometric record for 11UH411. 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 (11UH411) followed by the observatory code and reference code for the source of the astrometry.

2011 08  29.49423  01 57 07.927  +13 48 55.60  23.8r 11UH411   568  C~1C6N      
2011 08  29.59319  01 57 07.667  +13 48 53.73  24.3r 11UH411   568  C~1C6N      
2011 09  05.53271  01 56 48.644  +13 46 25.85        11UH411   568  C~1C6N      
2011 10  24.41192  01 53 07.076  +13 19 56.76  24.2r 11UH411   568  C~1C6N      
2011 10  24.45467  01 53 06.844  +13 19 55.17  24.3r 11UH411   568  C~1C6N      
2011 10  24.49734  01 53 06.619  +13 19 53.55  24.0r 11UH411   568  C~1C6N      
2011 10  28.48864  01 52 45.415  +13 17 20.44  24.3r 11UH411   568  C~1C6N      
2011 10  30.53322  01 52 34.600  +13 16 01.87  23.9r 11UH411   568  C~1C6N      
2011 10  31.51590  01 52 29.435  +13 15 24.23  23.6r 11UH411   568  C~1C6N      
2011 11  24.27924  01 50 33.658  +13 00 46.53  24.3r 11UH411   568  C~1C6N      
2012 01  26.25696  01 49 02.467  +12 40 25.76  24.1r 11UH411   568  C~1C6N      
2012 01  27.33441  01 49 04.577  +12 40 25.36  24.3r 11UH411   568  C~1C6N      
2012 02  21.24819  01 50 27.546  +12 43 24.94  23.8r 11UH411   568  C~1C6N      
2012 08  17.56436  02 05 15.415  +13 38 19.49        11UH411   568  C~1C6N      
2012 08  24.52210  02 05 05.130  +13 36 32.58  24.1r 11UH411   568  C~1C6N      
2012 10  17.36966  02 01 34.057  +13 10 25.61  23.1r 11UH411   568  C~1C6N      
2012 10  20.46455  02 01 17.632  +13 08 30.03  23.7r 11UH411   568  C~1C6N      
2013 02  09.23506  01 57 17.098  +12 28 37.06  24.2r 11UH411   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     0.12       0.00    -0.18
  2   0.0003     -4.20    -0.01      -0.44    -0.08
  3   0.0193   -315.42    -0.01     -42.88     0.12
  4   0.1531  -3898.37     0.05    -403.74    -0.05
  5   0.1532  -3902.10     0.06    -404.04    -0.00
  6   0.1533  -3905.74     0.15    -404.41    -0.02
  7   0.1643  -4249.45    -0.05    -439.10    -0.02
  8   0.1699  -4424.95    -0.14    -457.19    -0.04
  9   0.1725  -4508.82    -0.02    -465.92    -0.01
 10   0.2376  -6402.21     0.05    -691.40     0.01
 11   0.4100  -8083.81    -0.07   -1361.57    -0.05
 12   0.4130  -8055.04    -0.07   -1372.90     0.20
 13   0.4812  -6854.43    -0.06   -1634.77     0.21
 14   0.9694   6456.42    -0.23   -3036.22    -0.06
 15   0.9884   6278.93     0.10   -3085.91     0.05
 16   1.1359   2847.01     0.13   -3507.82     0.03
 17   1.1443   2581.93    -0.14   -3534.08     0.12
 18   1.4504  -1546.84     0.14   -4566.40    -0.22

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.

11UH411    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        46.602    46.633    46.573
ecceobj         0.245     0.247     0.244
incobj         26.969    26.969    26.968
qmin           34.329    33.459    34.324
qmax           58.481    59.496    58.629
amean          46.188    46.191    46.189
amin           45.769    45.740    45.765
amax           46.697    46.738    46.717
emean           0.241     0.251     0.239
emin            0.230     0.229     0.218
emax            0.254     0.273     0.256
imean          27.557    27.342    27.584
imin           27.204    26.704    27.167
imax           27.894    27.939    28.185
excite_mean     0.522     0.524     0.521
fracstop        1.000     1.000     1.000
cjmean          2.782     2.781     2.783

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       180.4     196.1     182.8
kozaiamp        180.0     180.0     180.0