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 Mon Dec 18 02:37:33 2017
# Orbit generated from Bernstein formalism
# Fitting   76 observations of   76
# Arc:  13.99y
# First observation: 2003/02/01
#  Last observation: 2017/01/27
Preliminary a, adot, b, bdot, g, gdot:
  -0.005020   0.026080  -0.001408   0.008243   0.027809   0.000000
# Chi-squared of fit:   185.23 DOF:  146 RMS:  0.28
# Min/Max residuals:    -2.16    0.56
# Exact a, adot, b, bdot, g, gdot:
  1.408613E-05  2.476267E-02  6.181795E-06  7.842023E-03  2.579735E-02 -1.231973E-03
# Covariance matrix:
  2.9904E-13 -6.1447E-14  3.5391E-14 -1.3970E-14 -5.3653E-14 -1.1666E-13
 -6.1447E-14  1.8468E-14 -1.3207E-14  5.2191E-15  1.5028E-14  4.3625E-14
  3.5391E-14 -1.3207E-14  1.8355E-13 -2.0140E-14 -1.0646E-14 -3.4372E-14
 -1.3970E-14  5.2191E-15 -2.0140E-14  3.2796E-15  4.1410E-15  1.3589E-14
 -5.3653E-14  1.5028E-14 -1.0646E-14  4.1410E-15  6.6660E-14  3.4152E-14
 -1.1666E-13  4.3625E-14 -3.4372E-14  1.3589E-14  3.4152E-14  1.1363E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -4.037762  114.995307   -0.285925   -0.066066   -0.935906  2452671.667378
# Heliocentric elements and errors
Epoch:              2452670.5000  =  2003/01/31
Mean Anomaly:          306.85855 +/-     0.025
Argument of Peri:       44.91223 +/-     0.028
Long of Asc Node:      127.66994 +/-     0.000
Inclination:            17.97525 +/-     0.000
Eccentricity:         0.04886406 +/-    0.0000
Semi-Major Axis:     40.83744006 +/-    0.0016
Time of Perihelion: 2466741.2439 +/-       6.5
Perihelion:          38.84195696 +/-    0.0017
Aphelion:            42.83292316 +/-    0.0018
Period (y)              260.9732 +/-      0.01
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.99637801 +/-    0.0002
Ecliptic Y           35.77994508 +/-    0.0003
Ecliptic Z           -2.72926039 +/-    0.0000
Ecliptic XDOT        -0.00235842 +/-    0.0000
Ecliptic YDOT        -0.00117990 +/-    0.0000
Ecliptic ZDOT         0.00083961 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.70554367 +/-    0.0003
Geocenter to KBO     38.76367868 +/-    0.0004
# Hcoef:  5.75

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.

2003 02  01.166635 07 44 42.24   +17 09 32.3   21.7V 10AH2     645  C~2POM      
2003 02  01.167464 07 44 42.24   +17 09 32.4   21.2V 10AH2     645  C~2POM      
2003 02  01.169952 07 44 42.22   +17 09 32.6   22.3V 10AH2     645  C~2POM      
2003 12  21.269865 07 54 33.13   +17 08 00.2   21.4V 10AH2     645  C~2POM      
2003 12  21.270694 07 54 33.13   +17 08 00.3   21.2V 10AH2     645  C~2POM      
2003 12  21.273182 07 54 33.11   +17 08 00.3   22.3V 10AH2     645  C~2POM      
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     0.23       0.00    -0.28
  2   0.0000     -0.02     0.27       0.10    -0.19
  3   0.0000     -0.33     0.14       0.24    -0.06
  4   0.8846   8349.16     0.13    1452.89    -0.14
  5   0.8846   8349.14     0.17    1452.99    -0.05
  6   0.8846   8348.86     0.06    1452.93    -0.10
  7   6.9299  38509.28     0.12   11419.41     0.09
  8   6.9299  38507.08    -0.20   11419.71     0.29
  9   6.9300  38504.87    -0.52   11419.39    -0.14
 10   6.9325  38434.59    -0.60   11423.57    -0.02
 11   6.9326  38432.72    -0.57   11423.74     0.05
 12   6.9326  38431.11    -0.25   11424.08     0.28
 13   6.9353  38355.28    -0.00   11427.97    -0.21
 14   6.9354  38353.56    -0.08   11428.18    -0.09
 15   6.9355  38351.95     0.07   11428.52     0.16
 16   7.1213  33462.32    -0.02   11781.10    -0.00
 17   7.1214  33458.66    -2.16   11781.27     0.00
 18   7.1240  33419.64    -0.16   11786.73     0.12
 19   7.1241  33417.44    -0.16   11787.15     0.27
 20   7.1242  33414.78    -0.54   11787.56     0.41
 21   7.7549  46462.69     0.45   12859.71     0.17
 22   7.9792  42459.44     0.43   13213.84     0.33
 23   7.9873  42212.19     0.22   13228.42     0.56
 24   8.9839  47788.45     0.05   14954.95    -0.03
 25   8.9839  47787.51     0.16   14955.01    -0.01
 26   9.0003  47285.04     0.31   14983.36     0.02
 27   9.0575  45615.07     0.30   15080.70    -0.16
 28   9.0575  45613.77     0.27   15080.98     0.05
 29   9.0576  45612.49     0.26   15080.46    -0.54
 30   9.0576  45611.06     0.09   15080.97    -0.09
 31   9.7480  57289.75     0.11   16262.60     0.02
 32   9.7480  57289.87     0.06   16262.43    -0.21
 33  10.0128  52452.86     0.05   16762.10     0.16
 34  10.8951  61529.31    -0.06   18335.44     0.30
 35  11.0698  56403.95     0.18   18629.46     0.01
 36  11.0698  56402.90     0.13   18629.55     0.06
 37  11.0699  56402.07     0.28   18629.56     0.02
 38  11.0699  56401.12     0.32   18629.59     0.02
 39  11.0917  55835.89     0.13   18657.61    -0.08
 40  11.0917  55835.04     0.18   18657.63    -0.09
 41  11.0918  55834.07     0.10   18657.74    -0.02
 42  11.0918  55833.15     0.07   18657.62    -0.18
 43  11.3158  55165.66     0.27   18907.33    -0.21
 44  11.3158  55166.10     0.42   18907.35    -0.20
 45  11.3158  55165.95    -0.01   18907.50    -0.07
 46  11.3158  55165.93    -0.30   18907.44    -0.14
 47  11.7575  68589.73    -0.23   19807.59     0.01
 48  11.7575  68590.16     0.04   19807.65    -0.01
 49  11.7576  68590.09    -0.19   19807.72    -0.02
 50  11.7576  68590.76     0.32   19808.14     0.34
 51  11.8995  67195.85     0.16   20157.96     0.03
 52  11.8995  67194.80    -0.03   20157.98    -0.02
 53  11.8995  67194.07     0.11   20158.10     0.03
 54  11.9572  65600.02     0.01   20273.46    -0.02
 55  11.9572  65598.93    -0.04   20273.47    -0.06
 56  11.9573  65597.85    -0.07   20273.57    -0.02
 57  11.9573  65596.92     0.04   20273.66     0.02
 58  11.9677  65275.50    -0.07   20292.45     0.10
 59  11.9677  65274.56     0.03   20292.47     0.07
 60  11.9678  65273.44    -0.05   20292.60     0.13
 61  11.9678  65272.42     0.00   20292.58     0.06
 62  12.0414  62943.10    -0.11   20404.63    -0.05
 63  12.0414  62942.22     0.05   20404.70    -0.02
 64  12.0415  62941.12     0.01   20404.73    -0.04
 65  12.0415  62939.99    -0.07   20404.75    -0.05
 66  12.0441  62859.83     0.22   20408.27     0.05
 67  12.0442  62858.54    -0.02   20408.29     0.03
 68  12.0442  62857.67     0.15   20408.26    -0.04
 69  12.0442  62856.60     0.13   20408.42     0.08
 70  12.1866  59875.99     0.12   20548.12     0.17
 71  12.1866  59875.79     0.19   20547.76    -0.21
 72  12.1866  59875.51     0.18   20548.01     0.02
 73  12.1867  59875.12     0.07   20548.17     0.16
 74  13.9884  76475.61    -0.28   24074.55    -0.06
 75  13.9884  76474.08    -0.15   24074.53    -0.15
 76  13.9885  76471.64    -0.91   24074.12    -0.63

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        40.653    40.657    40.648
ecceobj         0.043     0.043     0.043
incobj         18.025    18.025    18.025
qmin           38.010    38.034    38.009
qmax           43.370    43.314    43.332
amean          40.584    40.589    40.580
amin           40.275    40.272    40.267
amax           40.909    40.902    40.896
emean           0.044     0.044     0.044
emin            0.031     0.031     0.031
emax            0.061     0.060     0.060
imean          16.719    16.719    16.718
imin           15.885    15.884    15.880
imax           17.588    17.584    17.590
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       178.0     178.4     178.3
kozaiamp        179.9     180.0     180.0