Orbit Fit and Astrometric record for 11UH413

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: 11UH413   
# Created Wed Oct 18 01:37:59 2017
# Orbit generated from Bernstein formalism
# Fitting   11 observations of   11
# Arc:   2.10y
# First observation: 2011/10/23
#  Last observation: 2013/11/27
Preliminary a, adot, b, bdot, g, gdot:
   0.000114   0.025957  -0.000150   0.026025   0.034049   0.000000
# Chi-squared of fit:    16.78 DOF:   16 RMS:  0.22
# Min/Max residuals:    -0.60    0.35
# Exact a, adot, b, bdot, g, gdot:
  1.158057E-05  2.484419E-02  1.068766E-05  2.469831E-02  3.317064E-02 -2.118115E-02
# Covariance matrix:
  4.6173E-13  1.0114E-13 -2.1477E-14  3.0570E-13  4.9575E-13  5.6369E-12
  1.0114E-13  1.2794E-12 -1.1017E-13  1.4462E-12  1.1696E-12  2.6803E-11
 -2.1477E-14 -1.1017E-13  3.1215E-13 -2.9433E-13 -1.0555E-13 -2.5936E-12
  3.0570E-13  1.4462E-12 -2.9433E-13  1.9685E-12  1.4396E-12  3.3965E-11
  4.9575E-13  1.1696E-12 -1.0555E-13  1.4396E-12  1.7287E-12  2.6615E-11
  5.6369E-12  2.6803E-11 -2.5936E-12  3.3965E-11  2.6615E-11  6.2958E-10
#      lat0       lon0       xBary       yBary       zBary        JD0
  -12.532264   69.284319    0.633610   -0.165482   -0.744478  2455857.947686
# Heliocentric elements and errors
Epoch:              2455850.5000  =  2011/10/16
Mean Anomaly:          320.08262 +/-     0.065
Argument of Peri:       87.28753 +/-     0.016
Long of Asc Node:       79.96733 +/-     0.000
Inclination:            46.43150 +/-     0.001
Eccentricity:         0.55048393 +/-    0.0006
Semi-Major Axis:     38.31794539 +/-    0.0387
Time of Perihelion: 2465456.9130 +/-       5.8
Perihelion:          17.22453211 +/-    0.0296
Aphelion:            59.41135868 +/-    0.0646
Period (y)              237.1983 +/-      0.36
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           11.27552461 +/-    0.0004
Ecliptic Y           28.01658786 +/-    0.0011
Ecliptic Z           -6.54130209 +/-    0.0003
Ecliptic XDOT        -0.00236885 +/-    0.0000
Ecliptic YDOT        -0.00045205 +/-    0.0000
Ecliptic ZDOT         0.00236941 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   30.90073273 +/-    0.0010
Geocenter to KBO     30.14713786 +/-    0.0012
# Hcoef:  7.26

The following table shows the complete astrometric record for 11UH413. 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 (11UH413) followed by the observatory code and reference code for the source of the astrometry.

2011 10  23.44692  04 38 02.327  +09 26 44.19  21.1w 11UH413   F51  C~1w3o      
2011 10  23.46181  04 38 02.253  +09 26 44.13  21.8w 11UH413   F51  C~1w3o      
2011 10  23.47669  04 38 02.161  +09 26 43.72  21.9w 11UH413   F51  C~1w3o      
2011 12  17.31818  04 31 53.935  +09 21 49.29  22.0g 11UH413   F51  C~1w3o      
2011 12  17.33063  04 31 53.883  +09 21 48.97  22.1g 11UH413   F51  C~1w3o      
2013 02  11.30526  04 32 09.918  +11 19 38.59  21.8g 11UH413   F51  C~1w3o      
2013 11  06.59401  04 46 58.749  +12 45 25.16  21.5i 11UH413   F51  C~1w3o      
2013 11  06.60593  04 46 58.696  +12 45 24.88  21.6i 11UH413   F51  C~1w3o      
2013 11  27.35720  04 44 30.115  +12 44 06.20  22.5w 11UH413   F51  C~1w3o      
2013 11  27.37245  04 44 30.008  +12 44 06.15  22.4w 11UH413   F51  C~1w3o      
2013 11  27.40295  04 44 29.766  +12 44 06.08  22.4w 11UH413   F51  C~1w3o      

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     0.05       0.00     0.22
  2   0.0000     -1.09     0.15       0.10     0.35
  3   0.0001     -2.50    -0.08      -0.11     0.16
  4   0.1502  -5438.11    -0.34     497.77    -0.13
  5   0.1503  -5438.92     0.13     497.56    -0.60
  6   1.3056  -4165.49     0.18    7460.35    -0.13
  7   2.0401   9491.33    -0.13   10724.01    -0.05
  8   2.0401   9490.52     0.23   10723.83    -0.31
  9   2.0969   7319.91    -0.12   10940.50     0.20
 10   2.0970   7318.35     0.02   10940.66     0.15
 11   2.0971   7314.83    -0.09   10941.07     0.12

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.

11UH413    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        38.371    38.470    38.274
ecceobj         0.549     0.551     0.547
incobj         46.396    46.397    46.395
qmin           15.454    15.319    15.590
qmax           61.908    62.903    62.736
amean          38.151    38.455    38.275
amin           36.898    37.520    37.335
amax           39.141    39.455    39.509
emean           0.564     0.569     0.568
emin            0.546     0.514     0.537
emax            0.586     0.604     0.593
imean          43.927    44.135    44.011
imin           42.829    41.733    42.733
imax           45.283    45.788    45.328
excite_mean     0.894     0.899     0.897
fracstop        0.249     0.706     0.394
cjmean          2.135     2.118     2.122

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        89.8      90.2      90.1
kozaiamp         15.8       9.0       7.8