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 Wed Oct 24 01:09:12 2018
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   20 observations of   20
# Arc:   6.31y
# First observation: 2011/08/29
#  Last observation: 2017/12/20
# Chi-squared of fit:     7.04 DOF:   34 RMS:  0.10
# Min/Max residuals:    -0.20    0.19
# Exact a, adot, b, bdot, g, gdot:
  1.595983E-05  2.960880E-02 -7.444793E-06 -1.508152E-02  2.851363E-02 -1.734376E-03
# Covariance matrix:
  2.5121E-13 -1.1060E-13 -2.7142E-14  7.3788E-14  1.4321E-13 -7.4150E-13
 -1.1060E-13  3.8095E-13  8.5747E-14 -2.3656E-13  7.6807E-14  2.3805E-12
 -2.7142E-14  8.5747E-14  1.1787E-13 -7.9986E-14  1.0733E-14  5.7518E-13
  7.3788E-14 -2.3656E-13 -7.9986E-14  1.7894E-13 -3.0940E-14 -1.5855E-12
  1.4321E-13  7.6807E-14  1.0733E-14 -3.0940E-14  2.1414E-13  3.1263E-13
 -7.4150E-13  2.3805E-12  5.7518E-13 -1.5855E-12  3.1263E-13  1.5954E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.728110   32.073633    0.840134    0.016707   -0.554850  2455802.994996
# Heliocentric elements and errors
Epoch:              2455802.5000  =  2011/08/29
Mean Anomaly:          347.20695 +/-     0.021
Argument of Peri:      197.76201 +/-     0.036
Long of Asc Node:      214.06208 +/-     0.000
Inclination:            26.98967 +/-     0.000
Eccentricity:         0.24410172 +/-    0.0001
Semi-Major Axis:     46.50386914 +/-    0.0044
Time of Perihelion: 2459918.7695 +/-      17.1
Perihelion:          35.15219455 +/-    0.0041
Aphelion:            57.85554372 +/-    0.0060
Period (y)              317.1333 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           30.62432574 +/-    0.0005
Ecliptic Y           18.19854722 +/-    0.0003
Ecliptic Z            1.05738578 +/-    0.0000
Ecliptic XDOT        -0.00161686 +/-    0.0000
Ecliptic YDOT         0.00234927 +/-    0.0000
Ecliptic ZDOT        -0.00145242 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   35.63927414 +/-    0.0004
Geocenter to KBO     35.07100201 +/-    0.0006
# Hcoef:  8.63

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      
2017 12  20.25984  02 35 56.943  +11 15 56.98  23.7R 11UH411   G37  C~2UwX      
2017 12  20.36652  02 35 56.586  +11 15 54.91        11UH411   G37  C~2UwX      

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     0.16       0.00    -0.14
  2   0.0003      0.00     0.00       0.00    -0.09
  3   0.0193      0.00    -0.08       0.00     0.10
  4   0.1531      0.00     0.06       0.00    -0.03
  5   0.1532      0.00     0.06       0.00     0.01
  6   0.1533      0.00     0.15       0.00     0.03
  7   0.1643      0.00    -0.04       0.00    -0.04
  8   0.1699      0.00    -0.13       0.00    -0.09
  9   0.1725      0.00    -0.02       0.00    -0.02
 10   0.2376      0.00     0.04       0.00     0.03
 11   0.4100      0.00    -0.06       0.00    -0.07
 12   0.4130      0.00    -0.15       0.00     0.16
 13   0.4812      0.00    -0.14       0.00     0.18
 14   0.9694      0.00    -0.20       0.00    -0.12
 15   0.9884      0.00     0.08       0.00     0.09
 16   1.1359      0.00     0.12       0.00     0.08
 17   1.1443      0.00    -0.18       0.00     0.07
 18   1.4504      0.00     0.19       0.00    -0.17
 19   6.3101      0.00     0.00       0.00    -0.02
 20   6.3104      0.00     0.01       0.00     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.

11UH411    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        46.599    46.599    46.599
ecceobj         0.245     0.245     0.245
incobj         26.969    26.969    26.969
qmin           34.016    34.356    34.017
qmax           58.922    58.475    58.948
amean          46.195    46.188    46.180
amin           45.753    45.773    45.726
amax           46.706    46.716    46.702
emean           0.240     0.240     0.241
emin            0.220     0.228     0.220
emax            0.262     0.254     0.263
imean          27.598    27.587    27.580
imin           26.944    27.239    26.944
imax           28.094    27.895    28.087
excite_mean     0.522     0.522     0.522
fracstop        1.000     1.000     1.000
cjmean          2.782     2.782     2.782

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       185.9     180.3     190.2
kozaiamp        180.0     180.0     180.0