Orbit Fit and Astrometric record for 09YR26

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: 09YR26    
# Created Wed Dec  8 02:10:56 2021
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     93 observations of     93
# Arc:  11.15y
# First observation: 2009/12/17
#  Last observation: 2021/02/09
# Chi-squared of fit:    40.74 DOF:    180 RMS:  0.12
# Min/Max residuals:    -0.57    0.37
# Exact a, adot, b, bdot, g, gdot:
  1.593120E-05  2.495263E-02  5.524041E-06  7.806444E-03  2.576388E-02  1.005595E-03
# Covariance matrix:
  1.6560E-13 -4.5879E-14  2.5027E-14 -1.1085E-14 -1.0045E-14 -1.1751E-13
 -4.5879E-14  1.8149E-14 -1.1977E-14  5.2177E-15  1.4390E-14  5.5035E-14
  2.5027E-14 -1.1977E-14  9.6866E-14 -1.5187E-14 -1.1503E-14 -4.0208E-14
 -1.1085E-14  5.2177E-15 -1.5187E-14  3.4488E-15  4.2313E-15  1.7573E-14
 -1.0045E-14  1.4390E-14 -1.1503E-14  4.2313E-15  9.9361E-14  4.2115E-14
 -1.1751E-13  5.5035E-14 -4.0208E-14  1.7573E-14  4.2115E-14  1.8553E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
   -7.148964   97.627859    0.204680   -0.120124   -0.957893  2455182.888956
# Heliocentric elements and errors
Epoch:              2455182.5000  =  2009/12/17
Mean Anomaly:           42.64455 +/-     0.027
Argument of Peri:      290.87104 +/-     0.031
Long of Asc Node:      118.55887 +/-     0.000
Inclination:            18.66911 +/-     0.000
Eccentricity:         0.05140784 +/-    0.0000
Semi-Major Axis:     41.27700110 +/-    0.0020
Time of Perihelion: 2443708.3198 +/-       7.4
Perihelion:          39.15503976 +/-    0.0022
Aphelion:            43.39896243 +/-    0.0024
Period (y)              265.1981 +/-      0.02
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           -5.03424583 +/-    0.0001
Ecliptic Y           39.15245028 +/-    0.0005
Ecliptic Z           -4.83019434 +/-    0.0001
Ecliptic XDOT        -0.00265283 +/-    0.0000
Ecliptic YDOT        -0.00013910 +/-    0.0000
Ecliptic ZDOT         0.00080975 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.76917129 +/-    0.0005
Geocenter to KBO     38.81403350 +/-    0.0005
# Hcoef:  5.96

The following table shows the complete astrometric record for 09YR26. 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 (09YR26) followed by the observatory code and reference code for the source of the astrometry.

2009 12  17.38819  06 31 30.807  +16 04 55.06  21.6G 09YR26    F51  C~344s      
2009 12  17.39688  06 31 30.760  +16 04 55.27  22.2G 09YR26    F51  C~344s      
2010 01  11.33068  06 29 16.233  +16 08 32.42  21.5G 09YR26    F51  C~344s      
2010 01  11.33971  06 29 16.200  +16 08 32.62  21.6G 09YR26    F51  C~344s      
2010 01  24.47324  06 28 10.346  +16 11 10.07  22.1G 09YR26    F51  C~344s      
2010 11  08.62274  06 40 20.553  +16 24 49.58  21.8G 09YR26    F51  C~344s      
2011 10  01.61218  06 46 52.431  +16 47 49.06  22.6G 09YR26    F51  C~344s      
2011 10  01.62369  06 46 52.487  +16 47 49.03  21.6G 09YR26    F51  C~344s      
2011 10  13.59379  06 46 58.984  +16 46 39.01  21.6G 09YR26    F51  C~344s      
2012 01  11.49261  06 41 24.768  +16 51 45.46  21.1G 09YR26    F51  C~344s      
2012 01  25.29113  06 40 14.183  +16 54 40.76  22.7G 09YR26    F51  C~344s      
2012 01  25.30440  06 40 14.114  +16 54 40.77  21.8G 09YR26    F51  C~344s      
2012 01  25.32168  06 40 14.028  +16 54 41.10  21.7G 09YR26    F51  C~344s      
2012 04  16.24698  06 38 21.053  +17 13 23.51  22.4G 09YR26    F51  C~344s      
2012 10  28.52317  06 52 44.503  +17 05 21.85  21.3G 09YR26    F51  C~344s      
2013 12  30.38276  06 54 38.808  +17 29 49.33  21.8G 09YR26    F51  C~344s      
2013 12  30.39792  06 54 38.731  +17 29 49.38  21.5G 09YR26    F51  C~344s      
2013 12  30.41309  06 54 38.639  +17 29 49.66  22.1G 09YR26    F51  C~344s      
2014 01  10.31896  06 53 39.392  +17 32 00.66  21.5G 09YR26    F51  C~344s      
2014 01  10.33271  06 53 39.318  +17 32 00.87  21.7G 09YR26    F51  C~344s      
2014 11  26.44207  07 03 30.417  +17 43 41.94  21.8G 09YR26    F51  C~344s      
2014 11  26.45471  07 03 30.372  +17 43 42.23  22.0G 09YR26    F51  C~344s      
2014 11  26.46737  07 03 30.309  +17 43 42.25  22.3G 09YR26    F51  C~344s      
2014 11  26.48003  07 03 30.266  +17 43 42.33  21.9G 09YR26    F51  C~344s      
2015 01  13.33687  06 59 31.030  +17 51 42.08  21.7G 09YR26    F51  C~344s      
2015 01  13.35042  06 59 30.957  +17 51 42.30  21.9G 09YR26    F51  C~344s      
2015 01  13.36396  06 59 30.887  +17 51 42.40  21.7G 09YR26    F51  C~344s      
2015 01  13.37743  06 59 30.808  +17 51 42.58  21.6G 09YR26    F51  C~344s      
2015 01  16.32888  06 59 15.053  +17 52 23.17  21.6G 09YR26    F51  C~344s      
2015 01  16.34104  06 59 14.992  +17 52 23.20  21.7G 09YR26    F51  C~344s      
2015 01  16.35319  06 59 14.922  +17 52 23.53  21.7G 09YR26    F51  C~344s      
2015 01  16.36543  06 59 14.863  +17 52 23.65  21.9G 09YR26    F51  C~344s      
2015 01  20.28594  06 58 54.269  +17 53 18.57  21.7G 09YR26    F51  C~344s      
2015 01  20.29668  06 58 54.220  +17 53 18.74  21.7G 09YR26    F51  C~344s      
2015 01  20.30760  06 58 54.157  +17 53 18.94  21.8G 09YR26    F51  C~344s      
2015 01  20.31841  06 58 54.106  +17 53 19.05  21.7G 09YR26    F51  C~344s      
2015 10  26.53817  07 10 49.247  +18 00 02.28  22.0G 09YR26    F51  C~344s      
2015 12  08.65054  07 08 44.778  +18 02 59.59  21.9G 09YR26    F51  C~344s      
2016 01  05.51629  07 06 21.568  +18 08 11.85  22.1G 09YR26    F51  C~344s      
2016 01  05.52984  07 06 21.490  +18 08 12.19  22.1G 09YR26    F51  C~344s      
2016 01  05.54340  07 06 21.428  +18 08 12.67  22.2G 09YR26    F51  C~344s      
2016 01  05.55699  07 06 21.352  +18 08 12.29  21.9G 09YR26    F51  C~344s      
2016 01  16.46117  07 05 22.350  +18 10 43.96  21.3G 09YR26    F51  C~344s      
2016 01  16.47208  07 05 22.310  +18 10 44.04  21.4G 09YR26    F51  C~344s      
2016 01  16.48291  07 05 22.243  +18 10 44.16  21.6G 09YR26    F51  C~344s      
2016 01  16.49371  07 05 22.175  +18 10 44.19  21.8G 09YR26    F51  C~344s      
2016 02  05.27785  07 03 43.409  +18 15 38.63  21.9G 09YR26    F51  C~344s      
2016 02  05.29205  07 03 43.338  +18 15 38.93  22.2G 09YR26    F51  C~344s      
2016 02  05.30630  07 03 43.282  +18 15 39.15  21.9G 09YR26    F51  C~344s      
2016 02  05.32064  07 03 43.205  +18 15 39.44  22.1G 09YR26    F51  C~344s      
2017 01  27.46413  07 10 28.108  +18 31 19.55  21.9G 09YR26    F51  C~344s      
2017 01  27.47677  07 10 28.032  +18 31 19.68  22.1G 09YR26    F51  C~344s      
2017 01  27.48941  07 10 27.970  +18 31 20.03  22.1G 09YR26    F51  C~344s      
2017 01  27.50207  07 10 27.902  +18 31 20.25  21.7G 09YR26    F51  C~344s      
2017 12  12.43305  07 20 36.589  +18 37 20.07  21.9G 09YR26    F51  C~344s      
2017 12  12.43369  07 20 36.593  +18 37 20.01  21.8G 09YR26    F51  C~344s      
2017 12  12.44343  07 20 36.547  +18 37 20.01  21.7G 09YR26    F51  C~344s      
2017 12  12.44407  07 20 36.524  +18 37 20.16  21.7G 09YR26    F51  C~344s      
2017 12  12.45388  07 20 36.495  +18 37 20.23  21.9G 09YR26    F51  C~344s      
2017 12  12.45453  07 20 36.482  +18 37 20.28  21.9G 09YR26    F51  C~344s      
2017 12  12.46437  07 20 36.445  +18 37 20.31  22.1G 09YR26    F51  C~344s      
2017 12  12.46501  07 20 36.426  +18 37 20.45  21.8G 09YR26    F51  C~344s      
2017 12  23.40461  07 19 42.556  +18 39 32.49  21.9G 09YR26    F51  C~344s      
2017 12  23.41745  07 19 42.488  +18 39 32.65  21.8G 09YR26    F51  C~344s      
2017 12  23.43031  07 19 42.417  +18 39 32.84  22.1G 09YR26    F51  C~344s      
2017 12  23.44330  07 19 42.349  +18 39 32.99  21.6G 09YR26    F51  C~344s      
2018 01  11.49998  07 18 00.374  +18 44 03.85  22.3G 09YR26    F51  C~344s      
2018 01  11.51313  07 18 00.316  +18 44 04.09  21.8G 09YR26    F51  C~344s      
2018 01  11.52628  07 18 00.222  +18 44 04.20  21.8G 09YR26    F51  C~344s      
2018 01  11.53941  07 18 00.157  +18 44 04.45  21.5G 09YR26    F51  C~344s      
2018 01  20.31949  07 17 12.990  +18 46 20.32  21.6G 09YR26    F51  C~344s      
2018 01  20.33245  07 17 12.917  +18 46 20.42  21.8G 09YR26    F51  C~344s      
2018 01  20.34536  07 17 12.847  +18 46 20.75  21.7G 09YR26    F51  C~344s      
2018 01  20.35827  07 17 12.775  +18 46 20.89  21.7G 09YR26    F51  C~344s      
2018 01  22.45707  07 17 01.718  +18 46 53.91  21.2G 09YR26    F51  C~344s      
2018 01  23.46045  07 16 56.474  +18 47 09.75  22.0G 09YR26    F51  C~344s      
2018 02  04.27658  07 15 57.699  +18 50 17.24  21.3G 09YR26    F51  C~344s      
2018 02  04.28998  07 15 57.634  +18 50 17.29  21.4G 09YR26    F51  C~344s      
2018 02  18.23436  07 14 57.996  +18 53 53.27  22.0G 09YR26    F51  C~344s      
2018 02  18.24862  07 14 57.906  +18 53 54.12  21.4G 09YR26    F51  C~344s      
2020 12  09.407360 07 39 05.799  +19 21 27.71  21.8G 09YR26    G37  C~4U4M      
2020 12  09.458740 07 39 05.569  +19 21 28.61        09YR26    G37  C~4U4M      
2020 12  09.503420 07 39 05.385  +19 21 29.08        09YR26    G37  C~4U4M      
2020 12  24.53416  07 37 55.347  +19 25 02.16  22.0w 09YR26    F51  C~4NWY      
2020 12  24.54766  07 37 55.262  +19 25 02.20  22.0w 09YR26    F51  C~4NWY      
2020 12  24.56120  07 37 55.206  +19 25 02.48  21.8w 09YR26    F51  C~4NWY      
2020 12  24.57476  07 37 55.139  +19 25 02.68  21.8w 09YR26    F51  C~4NWY      
2021 01  15.47132  07 35 59.093  +19 31 05.29  21.5w 09YR26    F52  C~4U4M      
2021 01  15.48299  07 35 59.011  +19 31 05.56  21.6w 09YR26    F52  C~4U4M      
2021 01  15.49465  07 35 58.988  +19 31 05.61  21.7w 09YR26    F52  C~4U4M      
2021 01  15.50627  07 35 58.913  +19 31 05.89  21.6w 09YR26    F52  C~4U4M      
2021 02  09.25486  07 33 52.206  +19 38 12.65  21.7w 09YR26    F51  C~4Z0P      
2021 02  09.26765  07 33 52.166  +19 38 12.75  21.6w 09YR26    F51  C~4Z0P      

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    -0.14       0.00    -0.14
     2   0.0000      0.00    -0.14       0.00     0.01
     3   0.0683      0.00    -0.21       0.00     0.05
     4   0.0683      0.00     0.02       0.00     0.15
     5   0.1043      0.00     0.25       0.00    -0.04
     6   0.8932      0.00    -0.10       0.00    -0.02
     7   1.7884      0.00    -0.39       0.00     0.02
     8   1.7885      0.00     0.26       0.00     0.07
     9   1.8212      0.00     0.18       0.00     0.04
    10   2.0674      0.00     0.09       0.00    -0.15
    11   2.1051      0.00     0.05       0.00     0.11
    12   2.1052      0.00    -0.00       0.00    -0.06
    13   2.1052      0.00    -0.02       0.00     0.04
    14   2.3295      0.00     0.24       0.00    -0.15
    15   2.8642      0.00     0.22       0.00     0.03
    16   4.0356      0.00    -0.08       0.00     0.12
    17   4.0356      0.00     0.02       0.00    -0.00
    18   4.0357      0.00    -0.10       0.00     0.10
    19   4.0655      0.00    -0.08       0.00     0.01
    20   4.0656      0.00    -0.06       0.00     0.05
    21   4.9420      0.00    -0.04       0.00    -0.24
    22   4.9420      0.00     0.03       0.00    -0.03
    23   4.9420      0.00    -0.16       0.00    -0.08
    24   4.9421      0.00    -0.05       0.00    -0.07
    25   5.0731      0.00     0.00       0.00     0.00
    26   5.0731      0.00     0.02       0.00     0.04
    27   5.0732      0.00     0.07       0.00    -0.05
    28   5.0732      0.00    -0.01       0.00    -0.05
    29   5.0813      0.00    -0.07       0.00     0.05
    30   5.0813      0.00     0.00       0.00    -0.09
    31   5.0814      0.00    -0.07       0.00     0.07
    32   5.0814      0.00     0.04       0.00     0.01
    33   5.0921      0.00    -0.04       0.00    -0.04
    34   5.0922      0.00     0.07       0.00    -0.03
    35   5.0922      0.00    -0.01       0.00     0.02
    36   5.0922      0.00     0.08       0.00    -0.03
    37   5.8567      0.00     0.08       0.00     0.10
    38   5.9747      0.00     0.01       0.00     0.18
    39   6.0510      0.00    -0.04       0.00    -0.16
    40   6.0510      0.00    -0.08       0.00     0.01
    41   6.0511      0.00     0.11       0.00     0.31
    42   6.0511      0.00     0.09       0.00    -0.25
    43   6.0810      0.00    -0.11       0.00     0.18
    44   6.0810      0.00     0.18       0.00     0.11
    45   6.0810      0.00     0.06       0.00     0.07
    46   6.0811      0.00    -0.09       0.00    -0.05
    47   6.1352      0.00    -0.01       0.00    -0.12
    48   6.1353      0.00    -0.09       0.00    -0.03
    49   6.1353      0.00     0.05       0.00    -0.03
    50   6.1353      0.00    -0.11       0.00     0.04
    51   7.1131      0.00     0.21       0.00    -0.05
    52   7.1132      0.00     0.03       0.00    -0.11
    53   7.1132      0.00     0.06       0.00     0.05
    54   7.1132      0.00     0.01       0.00     0.08
    55   7.9864      0.00     0.01       0.00     0.06
    56   7.9864      0.00     0.12       0.00    -0.01
    57   7.9865      0.00     0.12       0.00    -0.12
    58   7.9865      0.00    -0.18       0.00     0.03
    59   7.9865      0.00     0.08       0.00    -0.01
    60   7.9865      0.00    -0.06       0.00     0.03
    61   7.9865      0.00     0.08       0.00    -0.05
    62   7.9865      0.00    -0.16       0.00     0.08
    63   8.0165      0.00     0.03       0.00    -0.04
    64   8.0165      0.00     0.02       0.00    -0.05
    65   8.0165      0.00    -0.03       0.00    -0.03
    66   8.0166      0.00    -0.03       0.00    -0.05
    67   8.0688      0.00     0.03       0.00     0.04
    68   8.0688      0.00     0.25       0.00     0.08
    69   8.0688      0.00    -0.08       0.00    -0.01
    70   8.0689      0.00     0.03       0.00     0.05
    71   8.0929      0.00     0.05       0.00     0.03
    72   8.0929      0.00    -0.00       0.00    -0.08
    73   8.0930      0.00    -0.01       0.00     0.05
    74   8.0930      0.00    -0.05       0.00    -0.02
    75   8.0988      0.00    -0.00       0.00    -0.04
    76   8.1015      0.00    -0.08       0.00    -0.04
    77   8.1338      0.00     0.01       0.00     0.13
    78   8.1339      0.00     0.00       0.00    -0.03
    79   8.1721      0.00    -0.05       0.00    -0.31
    80   8.1721      0.00    -0.57       0.00     0.32
    81  10.9788      0.00     0.07       0.00    -0.10
    82  10.9790      0.00    -0.07       0.00     0.14
    83  10.9791      0.00     0.05       0.00     0.05
    84  11.0202      0.00     0.04       0.00     0.10
    85  11.0203      0.00    -0.20       0.00    -0.06
    86  11.0203      0.00     0.00       0.00     0.01
    87  11.0204      0.00     0.04       0.00     0.00
    88  11.0803      0.00     0.02       0.00    -0.01
    89  11.0803      0.00    -0.25       0.00     0.06
    90  11.0804      0.00     0.37       0.00    -0.09
    91  11.0804      0.00     0.20       0.00    -0.01
    92  11.1482      0.00    -0.14       0.00    -0.00
    93  11.1482      0.00     0.17       0.00    -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.

09YR26    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.611    41.611    41.611
ecceobj         0.058     0.058     0.058
incobj         18.631    18.631    18.631
qmin           38.497    38.499    38.496
qmax           44.442    44.437    44.450
amean          41.387    41.387    41.387
amin           41.074    41.073    41.080
amax           41.720    41.719    41.719
emean           0.053     0.053     0.053
emin            0.040     0.040     0.040
emax            0.066     0.066     0.066
imean          17.113    17.113    17.113
imin           16.487    16.485    16.489
imax           17.769    17.768    17.771
excite_mean     0.299     0.299     0.299
fracstop        1.000     1.000     1.000
cjmean          2.965     2.965     2.965

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       179.5     179.5     179.4
kozaiamp        179.9     180.0     180.0