Orbit Fit and Astrometric record for 11HL103

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: 11HL103   
# Created Sun Oct 22 01:37:57 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   25
# Arc:  65.15d
# First observation: 2011/04/28
#  Last observation: 2011/07/02
Preliminary a, adot, b, bdot, g, gdot:
  -0.000000   0.031663  -0.000000  -0.007574   0.028244   0.000000
# Chi-squared of fit:     5.39 DOF:   44 RMS:  0.08
# Min/Max residuals:    -0.26    0.20
# Exact a, adot, b, bdot, g, gdot:
  1.679881E-05  2.905754E-02 -4.344152E-06 -7.422209E-03  2.741913E-02 -1.836719E-03
# Covariance matrix:
  3.9568E-13 -1.2714E-10  3.2460E-14  4.6674E-12 -3.1512E-11 -1.9476E-09
 -1.2714E-10  9.5540E-08 -2.2466E-11 -3.7208E-09  2.4472E-08  1.6224E-06
  3.2460E-14 -2.2466E-11  1.5872E-13 -3.0557E-13 -5.7274E-12 -3.7443E-10
  4.6674E-12 -3.7208E-09 -3.0557E-13  1.6005E-10 -9.5559E-10 -6.3792E-08
 -3.1512E-11  2.4472E-08 -5.7274E-12 -9.5559E-10  6.2771E-09  4.1754E-07
 -1.9476E-09  1.6224E-06 -3.7443E-10 -6.3792E-08  4.1754E-07  2.8035E-05
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.993811  -82.396996    0.876669    0.017419   -0.501081  2455679.793966
# Heliocentric elements and errors
Epoch:              2455670.5000  =  2011/04/19
Mean Anomaly:          330.44919 +/-    42.777
Argument of Peri:      211.72467 +/-    62.882
Long of Asc Node:      103.91093 +/-     0.100
Inclination:            14.44129 +/-     0.186
Eccentricity:         0.15079120 +/-    0.1086
Semi-Major Axis:     42.23815600 +/-    0.7184
Time of Perihelion: 2463900.9338 +/-   11912.2
Perihelion:          35.86901373 +/-    4.6289
Aphelion:            48.60729827 +/-    4.6624
Period (y)              274.5147 +/-      7.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            4.02448110 +/-    0.0140
Ecliptic Y          -36.74126523 +/-    0.1044
Ecliptic Z            1.26873167 +/-    0.0037
Ecliptic XDOT         0.00285321 +/-    0.0001
Ecliptic YDOT         0.00054595 +/-    0.0005
Ecliptic ZDOT        -0.00074702 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   36.98278923 +/-    0.1037
Geocenter to KBO     36.47088856 +/-    0.1054
# Hcoef:  7.94

The following table shows the complete astrometric record for 11HL103. 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 (11HL103) followed by the observatory code and reference code for the source of the astrometry.

2011 04  28.29320  18 32 37.26   -21 13 49.8         11HL103   268  C~11qb      
2011 04  28.39846  18 32 37.02   -21 13 50.1         11HL103   268  C~11qb      
2011 04  30.29847  18 32 32.69   -21 13 55.9         11HL103   268  C~11qb      
2011 05  04.35789  18 32 22.20   -21 14 09.9         11HL103   268  C~11qb      
2011 05  04.36394  18 32 22.19   -21 14 09.9         11HL103   268  C~11qb      
2011 05  04.38104  18 32 22.14   -21 14 09.9         11HL103   268  C~11qb      
2011 05  04.39888  18 32 22.09   -21 14 10.0         11HL103   268  C~11qb      
2011 05  04.40573  18 32 22.07   -21 14 10.0         11HL103   268  C~11qb      
2011 05  04.42148  18 32 22.02   -21 14 10.1         11HL103   268  C~11qb      
2011 05  27.28690  18 30 55.35   -21 16 00.4         11HL103   268  C~11qb      
2011 05  27.33105  18 30 55.13   -21 16 00.7         11HL103   268  C~11qb      
2011 05  27.38632  18 30 54.87   -21 16 01.1         11HL103   268  C~11qb      
2011 05  29.40904  18 30 45.32   -21 16 13.7         11HL103   266  C~11qb      
2011 05  29.54954  18 30 44.64   -21 16 14.4         11HL103   266  C~11qb      
2011 05  30.47860  18 30 40.15   -21 16 20.1         11HL103   266  C~11qb      
2011 05  30.54565  18 30 39.83   -21 16 20.4         11HL103   266  C~11qb      
2011 05  31.53716  18 30 34.96   -21 16 26.8         11HL103   266  C~11qb      
2011 06  01.43469  18 30 30.54   -21 16 32.3         11HL103   266  C~11qb      
2011 06  01.51361  18 30 30.13   -21 16 32.9         11HL103   266  C~11qb      
2011 07  02.01802  18 27 42.13   -21 20 19.8         11HL103   269  C~11qb      
2011 07  02.12588  18 27 41.51   -21 20 20.7         11HL103   269  C~11qb      
2011 07  02.23609  18 27 40.86   -21 20 21.6   23.2R 11HL103   269  C~11qb      
2011 07  02.32100  18 27 40.40   -21 20 22.5         11HL103   266  C~11qb      
2011 07  02.37545  18 27 40.07   -21 20 22.8         11HL103   266  C~11qb      
2011 07  02.44216  18 27 39.70   -21 20 23.5         11HL103   266  C~11qb      

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    -0.01       0.00     0.01
  2   0.0003     -3.37    -0.02      -0.11     0.03
  3   0.0055    -64.14    -0.11      -2.49     0.10
  4   0.0166   -211.36    -0.05      -8.22    -0.03
  5   0.0166   -211.50     0.06      -8.21    -0.02
  6   0.0167   -212.20     0.05      -8.17     0.05
  7   0.0167   -212.90     0.07      -8.23     0.01
  8   0.0167   -213.18     0.06      -8.22     0.03
  9   0.0168   -213.89    -0.00      -8.28    -0.01
 10   0.0794  -1429.78    -0.02     -51.87     0.06
 11   0.0795  -1432.87    -0.16     -52.00     0.03
 12   0.0797  -1436.52    -0.13     -52.21    -0.06
 13   0.0852  -1570.50    -0.03     -57.63    -0.26
 14   0.0856  -1580.03     0.09     -57.82    -0.09
 15   0.0881  -1643.01     0.01     -60.16    -0.04
 16   0.0883  -1647.50     0.20     -60.22     0.07
 17   0.0910  -1715.82    -0.06     -62.98    -0.10
 18   0.0935  -1777.81     0.10     -65.19     0.08
 19   0.0937  -1783.56    -0.03     -65.48     0.00
 20   0.1772  -4140.33    -0.05    -172.61    -0.03
 21   0.1775  -4149.03     0.02    -173.09    -0.00
 22   0.1778  -4158.14    -0.09    -173.55     0.02
 23   0.1780  -4164.61     0.07    -174.13    -0.01
 24   0.1782  -4169.23    -0.11    -174.21     0.16
 25   0.1784  -4174.43     0.15    -174.66     0.01

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.

11HL103    quality flag:1

Type:          5:3EE  CENTAURR CLASSICAL

axisobj        42.034    62.578    41.745
ecceobj         0.149     0.621     0.135
incobj         14.455    15.063    14.493
qmin           34.470    22.692    35.214
qmax           50.821   106.280    49.133
amean          42.328    60.581    41.969
amin           41.890    54.716    41.603
amax           42.805    64.984    42.387
emean           0.154     0.612     0.136
emin            0.121     0.571     0.111
emax            0.188     0.635     0.160
imean          12.557    12.144    11.756
imin           11.535    10.320    10.307
imax           13.760    14.477    13.298
excite_mean     0.267     0.647     0.245
fracstop        1.000     0.167     1.000
cjmean          2.998     2.694     3.008

libcent 0       182.1    -180.0    -180.0
libamp  0        83.9    -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       182.5     211.2     180.1
kozaiamp        179.9     179.9     180.0