Orbit Fit and Astrometric record for 11HE103

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: 11HE103   
# Created Tue Apr  1 01:09:16 2025
# Orbit generated from Bernstein formalism
# Fitting     30 observations of     30
# Arc:   3.17y
# First observation: 2011/04/28
#  Last observation: 2014/06/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000081   0.018753  -0.000018   0.002169   0.020944   0.000000
# Chi-squared of fit:     4.25 DOF:     54 RMS:  0.07
# Min/Max residuals:    -0.21    0.15
# Exact a, adot, b, bdot, g, gdot:
  1.384231E-05  1.864435E-02  1.980059E-06  2.130399E-03  2.140863E-02 -9.324712E-04
# Covariance matrix:
  1.7577E-13 -3.9709E-13  2.6667E-14 -7.9097E-14  3.7094E-13 -1.0338E-11
 -3.9709E-13  1.5688E-12 -1.1714E-13  3.4720E-13 -1.7577E-12  4.5275E-11
  2.6667E-14 -1.1714E-13  1.0137E-13 -6.8319E-14  1.6803E-13 -3.6483E-12
 -7.9097E-14  3.4720E-13 -6.8319E-14  1.2060E-13 -4.9491E-13  1.0796E-11
  3.7094E-13 -1.7577E-12  1.6803E-13 -4.9491E-13  4.0696E-12 -6.3279E-11
 -1.0338E-11  4.5275E-11 -3.6483E-12  1.0796E-11 -6.3279E-11  1.4009E-09
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.921675  -82.357855    0.877013    0.016768   -0.500504  2455679.793966
# Heliocentric elements and errors
Epoch:              2455670.5000  =  2011/04/19
Mean Anomaly:          225.58011 +/-     0.628
Argument of Peri:      158.48420 +/-     0.640
Long of Asc Node:      260.51173 +/-     0.002
Inclination:             6.83713 +/-     0.001
Eccentricity:         0.10598215 +/-    0.0014
Semi-Major Axis:     43.75086140 +/-    0.0117
Time of Perihelion: 2495137.9789 +/-     183.7
Perihelion:          39.11405116 +/-    0.0634
Aphelion:            48.38767165 +/-    0.0638
Period (y)              289.3931 +/-      0.12
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X            5.41030802 +/-    0.0006
Ecliptic Y          -46.88210719 +/-    0.0044
Ecliptic Z            1.56644768 +/-    0.0001
Ecliptic XDOT         0.00234420 +/-    0.0000
Ecliptic YDOT         0.00045020 +/-    0.0000
Ecliptic ZDOT         0.00026833 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.21924572 +/-    0.0043
Geocenter to KBO     46.71014470 +/-    0.0044
# Hcoef:  8.49

The following table shows the complete astrometric record for 11HE103. 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 (11HE103) followed by the observatory code and reference code for the source of the astrometry.

2011 04  28.29320  18 32 48.37   -21 18 01.1         11HE103   268  C~0pNK      
2011 04  28.39846  18 32 48.16   -21 18 00.9         11HE103   268  C~0pNK      
2011 04  28.39916  18 32 48.17   -21 18 00.9         11HE103   268  C~0pNK      
2011 04  30.29847  18 32 44.45   -21 17 57.2         11HE103   268  C~0pNK      
2011 05  04.35789  18 32 35.53   -21 17 50.8         11HE103   268  C~0pNK      
2011 05  04.36394  18 32 35.52   -21 17 50.9         11HE103   268  C~0pNK      
2011 05  04.38104  18 32 35.48   -21 17 50.7         11HE103   268  C~0pNK      
2011 05  04.39888  18 32 35.44   -21 17 50.8         11HE103   268  C~0pNK      
2011 05  04.40573  18 32 35.42   -21 17 50.7         11HE103   268  C~0pNK      
2011 05  31.22732  18 31 08.37   -21 17 40.0         11HE103   268  C~0pNK      
2011 05  31.29705  18 31 08.08   -21 17 40.2         11HE103   268  C~0pNK      
2012 04  18.26734  18 37 33.95   -21 07 11.8         11HE103   268  C~0pNK      
2012 04  18.31552  18 37 33.91   -21 07 11.5         11HE103   268  C~0pNK      
2012 04  18.36209  18 37 33.86   -21 07 11.4         11HE103   268  C~0pNK      
2012 04  18.36265  18 37 33.85   -21 07 11.4         11HE103   268  C~0pNK      
2012 04  18.40528  18 37 33.81   -21 07 11.2         11HE103   268  C~0pNK      
2012 04  19.30535  18 37 32.87   -21 07 08.7         11HE103   268  C~0pNK      
2012 04  19.30696  18 37 32.87   -21 07 08.7         11HE103   268  C~0pNK      
2012 04  19.31725  18 37 32.86   -21 07 08.8         11HE103   268  C~0pNK      
2012 04  19.35214  18 37 32.82   -21 07 08.6   26.0R 11HE103   268  C~0pNK      
2012 04  19.36183  18 37 32.81   -21 07 08.5         11HE103   268  C~0pNK      
2012 04  19.39518  18 37 32.75   -21 07 08.6         11HE103   268  C~0pNK      
2012 04  19.39905  18 37 32.76   -21 07 08.6         11HE103   268  C~0pNK      
2012 04  19.40424  18 37 32.75   -21 07 08.6         11HE103   268  C~0pNK      
2014 06  25.33943  18 43 03.427  -20 43 51.42  24.7r 11HE103   266  C~7ued      
2014 06  25.46067  18 43 02.860  -20 43 51.83  24.7r 11HE103   266  C~7ued      
2014 06  25.56643  18 43 02.365  -20 43 52.15  24.7r 11HE103   266  C~7ued      
2014 06  27.34219  18 42 54.186  -20 43 58.04  25.1r 11HE103   266  C~7ued      
2014 06  27.36877  18 42 54.061  -20 43 58.13  25.1r 11HE103   266  C~7ued      
2014 06  27.39518  18 42 53.937  -20 43 58.23  25.1r 11HE103   266  C~7ued      

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    -0.08
     2   0.0003     -2.92    -0.08       0.37    -0.08
     3   0.0003     -2.78     0.08       0.36    -0.09
     4   0.0055    -54.47    -0.00       7.00     0.11
     5   0.0166   -178.57    -0.07      20.44     0.02
     6   0.0166   -178.72    -0.01      20.35    -0.09
     7   0.0167   -179.27     0.02      20.58     0.08
     8   0.0167   -179.83     0.06      20.51    -0.05
     9   0.0167   -180.10     0.02      20.63     0.05
    10   0.0902  -1394.26     0.05      98.58     0.15
    11   0.0904  -1398.32    -0.04      98.60    -0.00
    12   0.9746   4026.01    -0.10     406.42    -0.15
    13   0.9747   4025.47     0.07     406.75     0.02
    14   0.9749   4024.78     0.07     406.90    -0.01
    15   0.9749   4024.64    -0.07     406.91    -0.00
    16   0.9750   4024.09     0.03     407.14     0.08
    17   0.9774   4011.12     0.02     410.48     0.07
    18   0.9775   4011.12     0.04     410.48     0.06
    19   0.9775   4010.97     0.06     410.39    -0.06
    20   0.9776   4010.43     0.07     410.63     0.05
    21   0.9776   4010.30     0.10     410.74     0.12
    22   0.9777   4009.45    -0.21     410.69    -0.05
    23   0.9777   4009.59    -0.01     410.68    -0.08
    24   0.9777   4009.45    -0.06     410.69    -0.09
    25   3.1596   8732.15    -0.01    1488.00     0.01
    26   3.1599   8724.17    -0.01    1488.17     0.01
    27   3.1602   8717.21    -0.01    1488.35     0.01
    28   3.1651   8602.14     0.01    1490.80    -0.01
    29   3.1652   8600.38     0.01    1490.84    -0.00
    30   3.1652   8598.64     0.01    1490.86    -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.

11HE103    quality flag:1

Type:      CLASSICAL  SCATNEAR    7:4EEE

axisobj        43.591    43.628    43.556
ecceobj         0.109     0.105     0.112
incobj          6.850     6.851     6.849
qmin           38.507    36.513    36.875
qmax           49.340    51.522    50.913
amean          43.726    43.755    43.727
amin           43.329    43.249    43.334
amax           44.166    44.247    44.170
emean           0.100     0.133     0.127
emin            0.081     0.092     0.062
emax            0.117     0.165     0.154
imean           8.671     8.294     7.540
imin            7.946     6.867     6.507
imax            9.504     9.404     9.187
excite_mean     0.181     0.197     0.184
fracstop        1.000     1.000     1.000
cjmean          3.059     3.051     3.058

libcent 0      -180.0    -180.0     202.1
libamp  0      -180.0    -180.0     142.0
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       179.0     181.3     191.4
kozaiamp        180.0     180.0      90.2