Orbit Fit and Astrometric record for 535022

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: 535022    
# Created Sun Nov 24 02:07:27 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting    114 observations of    114
# Arc:  13.19y
# First observation: 2011/01/30
#  Last observation: 2024/04/09
# Chi-squared of fit:    72.68 DOF:    222 RMS:  0.14
# Min/Max residuals:    -0.60    0.44
# Exact a, adot, b, bdot, g, gdot:
  1.650238E-05  2.387538E-02 -1.284624E-06 -1.803560E-03  2.448565E-02 -1.052143E-03
# Covariance matrix:
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00  0.0000E+00
#      lat0       lon0       xBary       yBary       zBary        JD0
   -5.744434  149.249797    0.323126   -0.093471   -0.929188  2455591.917476
# Heliocentric elements and errors
Epoch:              2455592.5000  =  2011/01/31
Mean Anomaly:          284.05248 +/-     0.000
Argument of Peri:      314.04233 +/-     0.000
Long of Asc Node:      276.71228 +/-     0.000
Inclination:             7.10509 +/-     0.000
Eccentricity:         0.05134478 +/-    0.0000
Semi-Major Axis:     42.18637433 +/-    0.0000
Time of Perihelion: 2476706.3698 +/-       0.0
Perihelion:          40.02032429 +/-    0.0000
Aphelion:            44.35242437 +/-    0.0000
Period (y)              274.0101 +/-      0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -35.55559774 +/-    0.0000
Ecliptic Y           21.53067045 +/-    0.0000
Ecliptic Z           -4.08782765 +/-    0.0000
Ecliptic XDOT        -0.00124810 +/-    0.0000
Ecliptic YDOT        -0.00235836 +/-    0.0000
Ecliptic ZDOT        -0.00018886 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   41.76701189 +/-    0.0000
Geocenter to KBO     40.84030360 +/-    0.0000
# Hcoef:  6.16

The following table shows the complete astrometric record for 535022. 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 (535022) followed by the observatory code and reference code for the source of the astrometry.

2011 01  30.41671  09 57 25.696  +06 20 44.82  22.2w 535022    F51  C~1vXr      
2011 01  30.43279  09 57 25.618  +06 20 44.95  22.5w 535022    F51  C~1vXr      
2011 01  30.44758  09 57 25.561  +06 20 45.42  22.4w 535022    F51  C~1vXr      
2011 02  04.44855  09 57 02.845  +06 22 30.26  22.5w 535022    F51  C~1vXr      
2011 02  04.46284  09 57 02.769  +06 22 30.70  22.3w 535022    F51  C~1vXr      
2011 02  04.47720  09 57 02.697  +06 22 30.89  22.4w 535022    F51  C~1vXr      
2011 02  04.49160  09 57 02.637  +06 22 31.17  22.4w 535022    F51  C~1vXr      
2011 02  05.43580  09 56 58.293  +06 22 51.87  22.5G 535022    F51  C~2rYE      
2011 02  05.45098  09 56 58.214  +06 22 52.00  22.1G 535022    F51  C~2rYE      
2011 02  05.46543  09 56 58.147  +06 22 52.33  22.3G 535022    F51  C~2rYE      
2011 02  05.47975  09 56 58.079  +06 22 52.64  22.1G 535022    F51  C~2rYE      
2012 02  13.48192  10 01 23.578  +05 51 41.53  22.9G 535022    F51  C~2rYE      
2012 02  14.37198  10 01 19.397  +05 52 02.47  21.9w 535022    F51  C~1vXr      
2012 02  14.38614  10 01 19.320  +05 52 03.05  22.1w 535022    F51  C~1vXr      
2012 02  14.40033  10 01 19.258  +05 52 03.15  22.2w 535022    F51  C~1vXr      
2013 02  10.48963  10 06 36.259  +05 16 23.05  21.9G 535022    F51  C~2rYE      
2013 02  21.45737  10 05 44.795  +05 20 51.24  21.7G 535022    F51  C~2rYE      
2013 03  04.29985  10 04 54.630  +05 25 32.11  22.3w 535022    F51  C~1vXr      
2013 03  04.31408  10 04 54.559  +05 25 32.40  22.2w 535022    F51  C~1vXr      
2013 03  04.32832  10 04 54.493  +05 25 32.69  22.1w 535022    F51  C~1vXr      
2013 03  04.34258  10 04 54.433  +05 25 33.15  22.1w 535022    F51  C~1vXr      
2014 01  11.58820  10 13 43.146  +04 32 37.60  21.7G 535022    F51  C~2rYE      
2014 02  23.37101  10 10 39.943  +04 46 52.51  22.8G 535022    F51  C~2rYE      
2014 02  23.38227  10 10 39.887  +04 46 52.79  22.3G 535022    F51  C~2rYE      
2014 03  06.36611  10 09 49.204  +04 51 41.46  22.8G 535022    F51  C~2rYE      
2014 11  25.63111  10 19 49.266  +03 59 16.63  22.8G 535022    F51  C~2rYE      
2014 11  27.61454  10 19 50.557  +03 58 48.49  22.1w 535022    F51  C~1vXr      
2014 11  27.62483  10 19 50.571  +03 58 48.17  22.4w 535022    F51  C~1vXr      
2014 11  27.63512  10 19 50.572  +03 58 47.80  22.3w 535022    F51  C~1vXr      
2014 11  27.64543  10 19 50.580  +03 58 48.03  22.3w 535022    F51  C~1vXr      
2015 01  16.47922  10 18 28.539  +03 58 46.88  22.1w 535022    F51  C~1vXr      
2015 01  16.49064  10 18 28.492  +03 58 47.11  22.3w 535022    F51  C~1vXr      
2015 01  16.50209  10 18 28.462  +03 58 47.17  22.3w 535022    F51  C~1vXr      
2015 01  16.51350  10 18 28.408  +03 58 47.41  22.4w 535022    F51  C~1vXr      
2015 01  18.47278  10 18 21.302  +03 59 14.22  22.2w 535022    F51  C~1vXr      
2015 01  18.48570  10 18 21.249  +03 59 14.66  22.2w 535022    F51  C~1vXr      
2015 01  18.49860  10 18 21.202  +03 59 14.60  22.2w 535022    F51  C~1vXr      
2015 01  18.51155  10 18 21.149  +03 59 14.79  21.8w 535022    F51  C~1vXr      
2015 03  14.36329  10 14 18.184  +04 20 16.37  21.9w 535022    F51  C~1vXr      
2015 03  14.38753  10 14 18.078  +04 20 17.02  22.4w 535022    F51  C~1vXr      
2015 03  14.39965  10 14 18.061  +04 20 17.38  22.2w 535022    F51  C~1vXr      
2015 03  15.37624  10 14 13.848  +04 20 43.31  22.8G 535022    F51  C~2rYE      
2015 03  15.40094  10 14 13.732  +04 20 43.96  22.3G 535022    F51  C~2rYE      
2015 12  09.61268  10 24 48.501  +03 22 07.57  22.7G 535022    F51  C~2rYE      
2015 12  09.62205  10 24 48.503  +03 22 07.52  22.8G 535022    F51  C~2rYE      
2015 12  09.63146  10 24 48.506  +03 22 07.36  22.7G 535022    F51  C~2rYE      
2015 12  23.58367  10 24 33.878  +03 21 08.13  21.5G 535022    F51  C~2rYE      
2016 01  04.59966  10 24 07.841  +03 21 46.13  22.1G 535022    F51  C~2rYE      
2016 01  04.61169  10 24 07.805  +03 21 46.24  22.4G 535022    F51  C~2rYE      
2016 01  04.62375  10 24 07.798  +03 21 46.14  21.8G 535022    F51  C~2rYE      
2016 01  04.63581  10 24 07.742  +03 21 46.26  22.4G 535022    F51  C~2rYE      
2016 01  14.60702  10 23 37.685  +03 23 18.13  22.6G 535022    F51  C~2rYE      
2016 01  14.61823  10 23 37.637  +03 23 18.33  21.5G 535022    F51  C~2rYE      
2016 01  14.62950  10 23 37.612  +03 23 18.50  21.7G 535022    F51  C~2rYE      
2016 01  14.64070  10 23 37.589  +03 23 18.71  21.9G 535022    F51  C~2rYE      
2016 01  17.57315  10 23 27.475  +03 23 55.47  22.0G 535022    F51  C~2rYE      
2016 01  17.58526  10 23 27.428  +03 23 55.63  22.2G 535022    F51  C~2rYE      
2016 01  17.59728  10 23 27.382  +03 23 55.70  22.3G 535022    F51  C~2rYE      
2016 01  17.60929  10 23 27.340  +03 23 55.91  22.1G 535022    F51  C~2rYE      
2016 02  06.47802  10 22 07.059  +03 29 47.15  22.2G 535022    F51  C~2rYE      
2016 02  15.42310  10 21 26.386  +03 33 12.40  21.9G 535022    F51  C~2rYE      
2016 03  07.34623  10 19 49.317  +03 42 19.23  22.5G 535022    F51  C~2rYE      
2016 03  07.35789  10 19 49.274  +03 42 19.39  22.5G 535022    F51  C~2rYE      
2016 03  07.36956  10 19 49.214  +03 42 19.85  22.7G 535022    F51  C~2rYE      
2016 03  31.34607  10 18 11.366  +03 52 59.74  22.2G 535022    F51  C~2rYE      
2016 03  31.35831  10 18 11.320  +03 53 00.05  22.1G 535022    F51  C~2rYE      
2016 03  31.37055  10 18 11.290  +03 53 00.36  22.3G 535022    F51  C~2rYE      
2016 03  31.38283  10 18 11.239  +03 53 00.83  22.2G 535022    F51  C~2rYE      
2016 04  29.25235  10 16 59.396  +04 03 06.08  22.6G 535022    F51  C~2rYE      
2016 04  29.26434  10 16 59.374  +04 03 06.01  22.7G 535022    F51  C~2rYE      
2016 04  29.27636  10 16 59.365  +04 03 06.63  22.5G 535022    F51  C~2rYE      
2016 04  29.28836  10 16 59.348  +04 03 06.29  22.8G 535022    F51  C~2rYE      
2016 12  13.57137  10 29 44.014  +02 46 45.87  22.0G 535022    F51  C~2rYE      
2017 01  03.61753  10 29 09.335  +02 46 39.06  22.3G 535022    F51  C~2rYE      
2017 01  03.62894  10 29 09.291  +02 46 39.11  22.8G 535022    F51  C~2rYE      
2017 01  03.64029  10 29 09.262  +02 46 39.12  22.7G 535022    F51  C~2rYE      
2017 01  03.65167  10 29 09.230  +02 46 39.17  22.4G 535022    F51  C~2rYE      
2017 03  22.31175  10 23 49.497  +03 13 43.86  22.2G 535022    F51  C~2rYE      
2017 03  22.32438  10 23 49.450  +03 13 44.37  21.9G 535022    F51  C~2rYE      
2017 03  22.33704  10 23 49.386  +03 13 44.74  22.7G 535022    F51  C~2rYE      
2018 01  13.51422  10 33 43.416  +02 12 39.37  23.2G 535022    F51  C~2rYE      
2018 01  13.52596  10 33 43.378  +02 12 39.26  22.5G 535022    F51  C~2rYE      
2018 01  13.53775  10 33 43.342  +02 12 39.38  22.1G 535022    F51  C~2rYE      
2018 01  13.54963  10 33 43.286  +02 12 39.24  22.7G 535022    F51  C~2rYE      
2018 01  20.56164  10 33 19.707  +02 14 05.00  22.1G 535022    F51  C~2rYE      
2018 01  20.57366  10 33 19.661  +02 14 05.13  22.2G 535022    F51  C~2rYE      
2018 01  20.58567  10 33 19.621  +02 14 05.33  21.9G 535022    F51  C~2rYE      
2018 01  20.59768  10 33 19.586  +02 14 05.45  22.1G 535022    F51  C~2rYE      
2018 02  21.43875  10 31 03.949  +02 25 00.36  22.5G 535022    F51  C~2rYE      
2018 02  21.45158  10 31 03.878  +02 25 00.68  22.4G 535022    F51  C~2rYE      
2018 02  21.47737  10 31 03.752  +02 25 01.10  23.0G 535022    F51  C~2rYE      
2018 03  11.38587  10 29 41.067  +02 33 06.84  22.9G 535022    F51  C~2rYE      
2018 03  20.35714  10 29 02.030  +02 37 17.05  23.4G 535022    F51  C~2rYE      
2019 04  07.33445  10 32 57.69   +02 09 44.5   23.4g 535022    T09  C~8Lo7      
2019 04  07.35805  10 32 57.61   +02 09 45.0   23.5g 535022    T09  C~8Lo7      
2019 04  07.37710  10 32 57.55   +02 09 45.7   23.4g 535022    T09  C~8Lo7      
2019 04  08.23806  10 32 54.70   +02 10 07.7   22.4y 535022    T09  C~7gdc      
2019 04  08.26980  10 32 54.58   +02 10 08.2   21.9y 535022    T09  C~7gdc      
2019 04  08.30006  10 32 54.48   +02 10 09.2   22.1y 535022    T09  C~7gdc      
2019 04  08.32999  10 32 54.39   +02 10 09.7   22.0y 535022    T09  C~7gdc      
2019 04  08.37381  10 32 54.23   +02 10 10.9   21.7y 535022    T09  C~7gdc      
2019 05  08.36005  10 31 48.57   +02 20 26.2   21.9i 535022    T09  C~8Pen      
2019 05  08.38956  10 31 48.53   +02 20 26.5   22.0i 535022    T09  C~8Pen      
2019 05  08.39224  10 31 48.53   +02 20 26.5   22.1i 535022    T09  C~8Pen      
2022 02  24.391720 10 51 07.788  +00 03 03.83  22.2w 535022    F52  C~5V3j      
2022 02  24.403948 10 51 07.735  +00 03 04.05  22.1w 535022    F52  C~5V3j      
2022 02  24.416186 10 51 07.667  +00 03 04.20  22.2w 535022    F52  C~5V3j      
2023 01  22.510331 10 58 28.380  -00 43 48.08  22.3w 535022    F52  C~6mow      
2023 01  22.523041 10 58 28.329  -00 43 47.95  21.7w 535022    F52  C~6mow      
2023 01  22.535791 10 58 28.275  -00 43 47.86  22.2w 535022    F52  C~6mow      
2023 01  22.548501 10 58 28.237  -00 43 47.65  22.2w 535022    F52  C~6mow      
2024 04  09.346275 10 58 06.516  -00 47 45.09  22.0w 535022    F51  C~7zZ3      
2024 04  09.358823 10 58 06.496  -00 47 44.70  22.0w 535022    F51  C~7zZ3      
2024 04  09.371341 10 58 06.442  -00 47 44.44  21.9w 535022    F51  C~7zZ3      

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    -0.20       0.00     0.10
     2   0.0000      0.00    -0.27       0.00    -0.10
     3   0.0001      0.00    -0.12       0.00     0.08
     4   0.0138      0.00     0.09       0.00     0.11
     5   0.0138      0.00    -0.04       0.00     0.24
     6   0.0139      0.00    -0.11       0.00     0.12
     7   0.0139      0.00     0.00       0.00     0.09
     8   0.0165      0.00     0.15       0.00     0.19
     9   0.0165      0.00     0.04       0.00    -0.01
    10   0.0166      0.00     0.06       0.00     0.00
    11   0.0166      0.00     0.05       0.00    -0.00
    12   1.0378      0.00     0.21       0.00     0.09
    13   1.0403      0.00     0.15       0.00    -0.20
    14   1.0403      0.00     0.01       0.00     0.04
    15   1.0403      0.00     0.10       0.00    -0.20
    16   2.0317      0.00    -0.23       0.00    -0.20
    17   2.0617      0.00    -0.11       0.00     0.01
    18   2.0914      0.00     0.17       0.00     0.13
    19   2.0914      0.00     0.08       0.00     0.04
    20   2.0915      0.00     0.08       0.00    -0.04
    21   2.0915      0.00     0.16       0.00     0.04
    22   2.9491      0.00    -0.16       0.00    -0.41
    23   3.0663      0.00    -0.03       0.00     0.09
    24   3.0663      0.00    -0.06       0.00     0.08
    25   3.0964      0.00     0.17       0.00    -0.09
    26   3.8199      0.00     0.19       0.00    -0.25
    27   3.8253      0.00     0.08       0.00     0.16
    28   3.8253      0.00     0.21       0.00    -0.02
    29   3.8254      0.00     0.15       0.00    -0.25
    30   3.8254      0.00     0.20       0.00     0.13
    31   3.9618      0.00    -0.10       0.00     0.02
    32   3.9619      0.00    -0.18       0.00     0.10
    33   3.9619      0.00     0.00       0.00     0.00
    34   3.9619      0.00    -0.18       0.00     0.09
    35   3.9673      0.00    -0.09       0.00    -0.22
    36   3.9673      0.00    -0.16       0.00     0.04
    37   3.9674      0.00    -0.13       0.00    -0.21
    38   3.9674      0.00    -0.20       0.00    -0.20
    39   4.1176      0.00    -0.11       0.00     0.27
    40   4.1176      0.00    -0.10       0.00     0.26
    41   4.1177      0.00     0.44       0.00     0.30
    42   4.1204      0.00    -0.04       0.00    -0.01
    43   4.1204      0.00    -0.17       0.00    -0.02
    44   4.8575      0.00    -0.02       0.00    -0.00
    45   4.8575      0.00     0.08       0.00     0.03
    46   4.8575      0.00     0.20       0.00    -0.06
    47   4.8957      0.00     0.09       0.00     0.00
    48   4.9286      0.00     0.09       0.00     0.05
    49   4.9287      0.00     0.04       0.00     0.08
    50   4.9287      0.00     0.43       0.00    -0.10
    51   4.9287      0.00     0.08       0.00    -0.05
    52   4.9560      0.00    -0.15       0.00    -0.03
    53   4.9561      0.00    -0.30       0.00     0.04
    54   4.9561      0.00    -0.09       0.00     0.08
    55   4.9561      0.00     0.14       0.00     0.16
    56   4.9642      0.00     0.08       0.00     0.09
    57   4.9642      0.00     0.03       0.00     0.09
    58   4.9642      0.00    -0.00       0.00     0.00
    59   4.9643      0.00     0.02       0.00     0.05
    60   5.0186      0.00    -0.07       0.00     0.06
    61   5.0431      0.00     0.02       0.00    -0.20
    62   5.1004      0.00    -0.23       0.00    -0.03
    63   5.1005      0.00    -0.07       0.00    -0.18
    64   5.1005      0.00    -0.17       0.00    -0.04
    65   5.1661      0.00     0.05       0.00    -0.14
    66   5.1662      0.00     0.02       0.00    -0.13
    67   5.1662      0.00     0.23       0.00    -0.13
    68   5.1662      0.00     0.12       0.00     0.03
    69   5.2453      0.00     0.02       0.00     0.13
    70   5.2453      0.00    -0.05       0.00    -0.13
    71   5.2453      0.00     0.08       0.00     0.30
    72   5.2454      0.00     0.08       0.00    -0.23
    73   5.8704      0.00     0.00       0.00     0.10
    74   5.9280      0.00     0.06       0.00     0.14
    75   5.9280      0.00    -0.15       0.00     0.12
    76   5.9281      0.00    -0.14       0.00     0.07
    77   5.9281      0.00    -0.18       0.00     0.05
    78   6.1407      0.00     0.04       0.00    -0.20
    79   6.1407      0.00     0.12       0.00    -0.03
    80   6.1408      0.00    -0.06       0.00    -0.00
    81   6.9544      0.00    -0.06       0.00     0.15
    82   6.9544      0.00    -0.07       0.00    -0.08
    83   6.9545      0.00    -0.04       0.00    -0.08
    84   6.9545      0.00    -0.30       0.00    -0.35
    85   6.9737      0.00    -0.09       0.00     0.04
    86   6.9737      0.00    -0.11       0.00     0.00
    87   6.9738      0.00    -0.05       0.00     0.03
    88   6.9738      0.00     0.08       0.00    -0.01
    89   7.0610      0.00     0.15       0.00     0.10
    90   7.0610      0.00    -0.01       0.00     0.09
    91   7.0611      0.00    -0.06       0.00    -0.15
    92   7.1101      0.00    -0.19       0.00    -0.04
    93   7.1347      0.00     0.05       0.00    -0.60
    94   8.1832      0.00    -0.09       0.00     0.07
    95   8.1833      0.00    -0.07       0.00    -0.04
    96   8.1833      0.00     0.01       0.00     0.17
    97   8.1857      0.00    -0.01       0.00     0.20
    98   8.1858      0.00    -0.21       0.00    -0.11
    99   8.1859      0.00    -0.18       0.00     0.12
   100   8.1859      0.00    -0.01       0.00    -0.14
   101   8.1861      0.00    -0.20       0.00    -0.05
   102   8.2682      0.00     0.12       0.00     0.10
   103   8.2682      0.00    -0.02       0.00    -0.03
   104   8.2682      0.00     0.02       0.00    -0.07
   105  11.0691      0.00     0.10       0.00     0.17
   106  11.0691      0.00     0.17       0.00     0.07
   107  11.0691      0.00     0.02       0.00    -0.10
   108  11.9784      0.00     0.19       0.00     0.04
   109  11.9784      0.00     0.07       0.00     0.02
   110  11.9784      0.00    -0.10       0.00    -0.04
   111  11.9785      0.00    -0.03       0.00     0.02
   112  13.1908      0.00    -0.14       0.00     0.09
   113  13.1908      0.00     0.25       0.00     0.13
   114  13.1908      0.00     0.12       0.00     0.04

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.

535022    quality flag:3

Type:       SCATNEAR  SCATNEAR  SCATNEAR

axisobj        42.285    42.285    42.285
ecceobj         0.050     0.050     0.050
incobj          7.095     7.095     7.095
qmin           35.344    37.741    35.485
qmax           49.723    47.328    49.706
amean          42.327    42.324    42.326
amin           41.856    41.879    41.844
amax           42.813    42.803    42.831
emean           0.094     0.077     0.113
emin            0.033     0.033     0.033
emax            0.163     0.106     0.161
imean           8.477     8.786     7.182
imin            5.941     7.126     4.468
imax            9.909    10.063    10.042
excite_mean     0.177     0.172     0.173
fracstop        1.000     1.000     1.000
cjmean          3.044     3.046     3.046

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       185.8     184.4     132.3
kozaiamp        180.0     180.0     179.9