Orbit Fit and Astrometric record for 10AH2

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: 10AH2     
# Created Wed Oct 18 01:37:48 2017
# Orbit generated from Bernstein formalism
# Fitting   70 observations of   70
# Arc:   7.06y
# First observation: 2010/01/06
#  Last observation: 2017/01/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.000330   0.025210  -0.000123   0.008193   0.026007   0.000000
# Chi-squared of fit:   119.05 DOF:  134 RMS:  0.23
# Min/Max residuals:    -1.72    0.46
# Exact a, adot, b, bdot, g, gdot:
  1.357776E-05  2.505393E-02  4.735900E-06  8.142855E-03  2.597286E-02 -7.294857E-04
# Covariance matrix:
  9.2930E-14 -3.1419E-14  3.6257E-15 -5.4736E-15  1.2480E-14 -1.1454E-13
 -3.1419E-14  4.2557E-14 -8.6922E-15  1.3139E-14  3.2023E-14  2.7332E-13
  3.6257E-15 -8.6922E-15  7.8959E-14 -1.9312E-14 -6.9802E-15 -6.2891E-14
 -5.4736E-15  1.3139E-14 -1.9312E-14  9.3033E-15  1.0570E-14  9.5064E-14
  1.2480E-14  3.2023E-14 -6.9802E-15  1.0570E-14  9.1595E-14  2.1812E-13
 -1.1454E-13  2.7332E-13 -6.2891E-14  9.5064E-14  2.1812E-13  1.9778E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.854221  125.555962    0.332361   -0.013851   -0.929442  2455202.804766
# Heliocentric elements and errors
Epoch:              2455200.5000  =  2010/01/04
Mean Anomaly:          307.00742 +/-     0.046
Argument of Peri:       54.28622 +/-     0.052
Long of Asc Node:      127.63056 +/-     0.000
Inclination:            18.05693 +/-     0.000
Eccentricity:         0.04229542 +/-    0.0000
Semi-Major Axis:     40.40912328 +/-    0.0017
Time of Perihelion: 2469011.6593 +/-      11.9
Perihelion:          38.70000250 +/-    0.0026
Aphelion:            42.11824406 +/-    0.0027
Period (y)              256.8783 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -22.65298126 +/-    0.0003
Ecliptic Y           32.26581503 +/-    0.0004
Ecliptic Z           -0.57382923 +/-    0.0000
Ecliptic XDOT        -0.00210836 +/-    0.0000
Ecliptic YDOT        -0.00158231 +/-    0.0000
Ecliptic ZDOT         0.00085934 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.42803139 +/-    0.0003
Geocenter to KBO     38.50172290 +/-    0.0004
# Hcoef:  5.76

The following table shows the complete astrometric record for 10AH2. 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 (10AH2) followed by the observatory code and reference code for the source of the astrometry.

2010 01  06.30400  08 30 48.21   +18 03 10.8   21.4V 10AH2     291  C~0Ctq      
2010 01  06.32814  08 30 48.07   +18 03 11.6   21.6V 10AH2     291  C~0Ctq      
2010 01  06.35235  08 30 47.92   +18 03 11.8   21.2V 10AH2     291  C~0Ctq      
2010 01  07.26658  08 30 43.37   +18 03 32.1   21.7V 10AH2     291  C~0Ctq      
2010 01  07.29085  08 30 43.25   +18 03 32.7   21.5V 10AH2     291  C~0Ctq      
2010 01  07.31536  08 30 43.15   +18 03 33.4   21.8V 10AH2     291  C~0Ctq      
2010 01  08.29766  08 30 38.23   +18 03 54.7   21.5V 10AH2     291  C~0D6I      
2010 01  08.31858  08 30 38.12   +18 03 55.3         10AH2     291  C~0D6I      
2010 01  08.34072  08 30 38.02   +18 03 56.0   21.5V 10AH2     291  C~0D6I      
2010 03  17.23033  08 25 20.36   +18 28 16.3         10AH2     291  C~0F6C      
2010 03  17.26334  08 25 20.12   +18 28 17.3         10AH2     291  C~0F6C      
2010 03  18.19740  08 25 17.61   +18 28 31.4         10AH2     291  C~0F6C      
2010 03  18.24695  08 25 17.47   +18 28 32.3         10AH2     291  C~0F6C      
2010 03  18.29838  08 25 17.30   +18 28 33.3         10AH2     291  C~0F6C      
2010 11  03.63684  08 39 48.736  +17 54 34.75  21.4z 10AH2     F51  C~1w3h      
2011 01  24.56176  08 35 35.278  +18 16 08.57  21.2i 10AH2     F51  C~1w3h      
2011 01  27.53703  08 35 19.408  +18 17 21.21  21.7r 10AH2     F51  C~1w3h      
2012 01  26.53085  08 41 48.473  +18 22 06.30  21.7r 10AH2     F51  C~1w3h      
2012 01  26.54310  08 41 48.414  +18 22 06.59  21.6r 10AH2     F51  C~1w3h      
2012 02  01.52985  08 41 16.574  +18 24 36.14  22.7g 10AH2     F51  C~1w3h      
2012 02  22.41545  08 39 30.460  +18 32 54.83  21.7w 10AH2     F51  C~1vW9      
2012 02  22.43243  08 39 30.380  +18 32 55.41  21.6w 10AH2     F51  C~1vW9      
2012 02  22.44921  08 39 30.289  +18 32 55.23  21.5w 10AH2     F51  C~1vW9      
2012 02  22.46598  08 39 30.205  +18 32 56.06  21.7w 10AH2     F51  C~1vW9      
2012 10  31.62496  08 52 12.446  +18 02 59.34  21.4z 10AH2     F51  C~1w3h      
2012 10  31.63531  08 52 12.450  +18 02 59.15  21.0z 10AH2     F51  C~1w3h      
2013 02  05.33944  08 47 16.438  +18 31 03.34  21.6w 10AH2     F51  C~1w3h      
2013 12  24.61085  08 57 11.022  +18 16 46.52  21.4i 10AH2     F51  C~1w3h      
2014 02  26.40724  08 51 57.353  +18 43 17.74  22.0w 10AH2     F51  C~1vW9      
2014 02  26.42026  08 51 57.289  +18 43 18.09  21.7w 10AH2     F51  C~1vW9      
2014 02  26.43327  08 51 57.237  +18 43 18.31  21.7w 10AH2     F51  C~1vW9      
2014 02  26.44629  08 51 57.178  +18 43 18.59  21.6w 10AH2     F51  C~1vW9      
2014 03  06.41167  08 51 22.168  +18 46 09.21  21.7w 10AH2     F51  C~1vW9      
2014 03  06.42474  08 51 22.115  +18 46 09.45  21.5w 10AH2     F51  C~1vW9      
2014 03  06.43781  08 51 22.056  +18 46 09.80  21.8w 10AH2     F51  C~1vW9      
2014 03  06.45091  08 51 21.996  +18 46 09.92  21.7w 10AH2     F51  C~1vW9      
2014 05  27.26059  08 50 44.254  +18 52 52.13  21.8w 10AH2     F51  C~1vW9      
2014 05  27.26578  08 50 44.282  +18 52 52.04  21.9w 10AH2     F51  C~1vW9      
2014 05  27.27091  08 50 44.275  +18 52 52.21  21.9w 10AH2     F51  C~1vW9      
2014 05  27.27599  08 50 44.273  +18 52 52.16  21.6w 10AH2     F51  C~1vW9      
2014 11  04.59728  09 04 46.600  +18 08 23.08  22.1w 10AH2     F51  C~1vW9      
2014 11  04.60786  09 04 46.627  +18 08 23.02  21.9w 10AH2     F51  C~1vW9      
2014 11  04.61841  09 04 46.624  +18 08 23.10  21.9w 10AH2     F51  C~1vW9      
2014 11  04.62894  09 04 46.672  +18 08 23.31  22.0w 10AH2     F51  C~1vW9      
2014 12  26.44999  09 03 28.691  +18 19 49.82  21.9w 10AH2     F51  C~1vW9      
2014 12  26.46294  09 03 28.628  +18 19 50.12  21.7w 10AH2     F51  C~1vW9      
2014 12  26.47591  09 03 28.586  +18 19 50.42  22.0w 10AH2     F51  C~1vW9      
2015 01  16.53425  09 01 53.940  +18 28 36.41  21.7w 10AH2     F51  C~1vW9      
2015 01  16.54650  09 01 53.874  +18 28 36.71  21.7w 10AH2     F51  C~1vW9      
2015 01  16.55878  09 01 53.810  +18 28 37.08  21.7w 10AH2     F51  C~1vW9      
2015 01  16.57109  09 01 53.755  +18 28 37.41  21.7w 10AH2     F51  C~1vW9      
2015 01  20.37309  09 01 34.523  +18 30 19.31  21.7w 10AH2     F51  C~1vW9      
2015 01  20.38512  09 01 34.466  +18 30 19.58  21.7w 10AH2     F51  C~1vW9      
2015 01  20.39717  09 01 34.400  +18 30 19.99  21.8w 10AH2     F51  C~1vW9      
2015 01  20.40942  09 01 34.338  +18 30 20.24  21.7w 10AH2     F51  C~1vW9      
2015 02  16.28998  08 59 13.854  +18 42 15.62  21.6w 10AH2     F51  C~1vW9      
2015 02  16.30230  08 59 13.801  +18 42 15.92  21.7w 10AH2     F51  C~1vW9      
2015 02  16.31468  08 59 13.734  +18 42 16.23  21.7w 10AH2     F51  C~1vW9      
2015 02  16.32704  08 59 13.665  +18 42 16.55  21.7w 10AH2     F51  C~1vW9      
2015 02  17.28973  08 59 08.803  +18 42 40.82  21.9w 10AH2     F51  C~1vW9      
2015 02  17.30213  08 59 08.724  +18 42 41.18  21.7w 10AH2     F51  C~1vW9      
2015 02  17.31451  08 59 08.670  +18 42 41.38  21.8w 10AH2     F51  C~1vW9      
2015 02  17.32690  08 59 08.607  +18 42 41.81  21.7w 10AH2     F51  C~1vW9      
2015 04  10.30564  08 56 06.977  +18 57 50.46  21.8w 10AH2     F51  C~1vW9      
2015 04  10.31749  08 56 06.958  +18 57 50.18  21.8w 10AH2     F51  C~1vW9      
2015 04  10.32928  08 56 06.945  +18 57 50.48  21.7w 10AH2     F51  C~1vW9      
2015 04  10.34110  08 56 06.924  +18 57 50.73  21.9w 10AH2     F51  C~1vW9      
2017 01  27.42976  09 13 49.86   +18 36 57.1         10AH2     691  C~262t      
2017 01  27.44793  09 13 49.77   +18 36 57.5         10AH2     691  C~262t      
2017 01  27.46637  09 13 49.62   +18 36 57.8         10AH2     691  C~262t      

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     0.35       0.00     0.05
  2   0.0001     -2.13     0.03       0.29     0.24
  3   0.0001     -4.25    -0.28      -0.04    -0.18
  4   0.0026    -72.13    -0.35       3.87    -0.06
  5   0.0027    -73.94    -0.32       4.04     0.00
  6   0.0028    -75.49    -0.02       4.37     0.24
  7   0.0055   -148.73     0.23       7.97    -0.25
  8   0.0055   -150.40     0.16       8.17    -0.13
  9   0.0056   -151.95     0.30       8.51     0.11
 10   0.1914  -4895.67     0.37     342.40    -0.05
 11   0.1915  -4899.23    -1.72     342.57    -0.05
 12   0.1941  -4937.28     0.23     347.84     0.06
 13   0.1942  -4939.43     0.23     348.25     0.21
 14   0.1944  -4942.01    -0.14     348.65     0.35
 15   0.8250   7600.73     0.35    1422.47     0.09
 16   1.0493   3774.17     0.44    1762.30     0.23
 17   1.0574   3537.07     0.24    1776.25     0.46
 18   2.0540   8829.49    -0.07    3458.67    -0.13
 19   2.0540   8828.61     0.03    3458.73    -0.12
 20   2.0704   8351.29     0.18    3486.42    -0.08
 21   2.1276   6761.95     0.21    3581.64    -0.26
 22   2.1277   6760.70     0.18    3581.92    -0.05
 23   2.1277   6759.49     0.17    3581.41    -0.63
 24   2.1278   6758.13     0.01    3581.91    -0.19
 25   2.8181  17747.70    -0.13    4713.74    -0.08
 26   2.8182  17747.81    -0.18    4713.57    -0.30
 27   3.0829  13208.13    -0.13    5202.94     0.06
 28   3.9652  21651.86    -0.23    6693.32     0.23
 29   4.1399  16880.96     0.02    6991.91    -0.03
 30   4.1399  16879.99    -0.03    6992.00     0.01
 31   4.1400  16879.21     0.11    6992.01    -0.02
 32   4.1400  16878.32     0.15    6992.05    -0.02
 33   4.1618  16349.73    -0.02    7020.89    -0.11
 34   4.1619  16348.93     0.02    7020.92    -0.13
 35   4.1619  16348.03    -0.05    7021.03    -0.06
 36   4.1619  16347.17    -0.08    7020.91    -0.21
 37   4.3859  15718.73     0.13    7263.49    -0.22
 38   4.3859  15719.14     0.27    7263.51    -0.22
 39   4.3859  15718.99    -0.13    7263.65    -0.09
 40   4.3860  15718.98    -0.41    7263.59    -0.16
 41   4.8276  28120.77    -0.26    8072.08     0.01
 42   4.8277  28121.17    -0.02    8072.14    -0.00
 43   4.8277  28121.10    -0.23    8072.20    -0.01
 44   4.8277  28121.71     0.23    8072.60     0.33
 45   4.9696  26837.96     0.10    8411.54     0.05
 46   4.9696  26837.00    -0.06    8411.56     0.00
 47   4.9697  26836.33     0.06    8411.68     0.04
 48   5.0273  25371.18    -0.03    8528.87     0.01
 49   5.0274  25370.18    -0.07    8528.88    -0.03
 50   5.0274  25369.19    -0.11    8528.98     0.01
 51   5.0274  25368.33    -0.00    8529.07     0.04
 52   5.0378  25072.51    -0.11    8548.47     0.12
 53   5.0379  25071.65    -0.02    8548.50     0.09
 54   5.0379  25070.61    -0.09    8548.63     0.15
 55   5.0379  25069.68    -0.04    8548.61     0.08
 56   5.1115  22921.58    -0.15    8666.51    -0.01
 57   5.1116  22920.76     0.00    8666.58     0.01
 58   5.1116  22919.75    -0.04    8666.61    -0.00
 59   5.1116  22918.71    -0.11    8666.64    -0.02
 60   5.1143  22844.64     0.16    8670.38     0.08
 61   5.1143  22843.44    -0.07    8670.41     0.06
 62   5.1143  22842.64     0.10    8670.38    -0.01
 63   5.1144  22841.65     0.07    8670.54     0.11
 64   5.2567  20080.30     0.05    8818.58     0.21
 65   5.2567  20080.12     0.13    8818.23    -0.16
 66   5.2567  20079.86     0.12    8818.47     0.06
 67   5.2568  20079.50     0.02    8818.63     0.20
 68   7.0585  35194.33     0.23   12065.28     0.21
 69   7.0586  35192.95     0.35   12065.28     0.13
 70   7.0586  35190.76    -0.33   12064.90    -0.32

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.

10AH2    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        40.651    40.656    40.645
ecceobj         0.043     0.043     0.043
incobj         18.024    18.024    18.024
qmin           38.046    38.007    38.019
qmax           43.323    43.378    43.306
amean          40.582    40.587    40.577
amin           40.276    40.286    40.269
amax           40.897    40.903    40.891
emean           0.044     0.044     0.044
emin            0.031     0.031     0.030
emax            0.060     0.060     0.060
imean          16.718    16.718    16.717
imin           15.885    15.882    15.881
imax           17.585    17.581    17.591
excite_mean     0.291     0.291     0.291
fracstop        1.000     1.000     1.000
cjmean          2.964     2.964     2.964

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       178.2     178.3     178.2
kozaiamp        179.9     180.0     180.0