Orbit Fit and Astrometric record for 09YG19

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: 09YG19    
# Created Tue Oct 24 01:37:47 2017
# Orbit generated from Bernstein formalism
# Fitting   60 observations of   68
# Arc:   5.95y
# First observation: 2009/12/25
#  Last observation: 2015/12/07
Preliminary a, adot, b, bdot, g, gdot:
  -0.000336   0.038676  -0.000003   0.002692   0.031524   0.000000
# Chi-squared of fit:    40.12 DOF:  114 RMS:  0.14
# Min/Max residuals:    -0.60    0.40
# Exact a, adot, b, bdot, g, gdot:
  1.741111E-05  3.899615E-02 -5.626529E-07  2.713820E-03  3.056760E-02  3.315881E-03
# Covariance matrix:
  1.4962E-13 -8.0170E-14  2.7557E-15 -3.8219E-15 -3.9122E-14 -2.6120E-13
 -8.0170E-14  9.8285E-14 -4.1517E-15  5.9855E-15  2.2317E-15  4.1331E-13
  2.7557E-15 -4.1517E-15  1.0064E-13 -2.4075E-14 -5.7733E-16 -1.8954E-14
 -3.8219E-15  5.9855E-15 -2.4075E-14  7.8691E-15  4.3077E-16  2.7276E-14
 -3.9122E-14  2.2317E-15 -5.7733E-16  4.3077E-16  1.0049E-13  2.2534E-14
 -2.6120E-13  4.1331E-13 -1.8954E-14  2.7276E-14  2.2534E-14  1.8826E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -3.293262   59.779645   -0.546816   -0.047135   -0.820012  2455190.546416
# Heliocentric elements and errors
Epoch:              2455190.5000  =  2009/12/25
Mean Anomaly:            7.83483 +/-     0.002
Argument of Peri:      301.11016 +/-     0.006
Long of Asc Node:       99.16022 +/-     0.001
Inclination:             5.15727 +/-     0.000
Eccentricity:         0.41077902 +/-    0.0001
Semi-Major Axis:     55.88758592 +/-    0.0053
Time of Perihelion: 2451869.2717 +/-       0.9
Perihelion:          32.93013816 +/-    0.0044
Aphelion:            78.84503367 +/-    0.0081
Period (y)              417.8123 +/-      0.06
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           16.38298447 +/-    0.0002
Ecliptic Y           29.20397085 +/-    0.0003
Ecliptic Z           -1.87940235 +/-    0.0000
Ecliptic XDOT        -0.00285877 +/-    0.0000
Ecliptic YDOT         0.00203178 +/-    0.0000
Ecliptic ZDOT         0.00022554 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   33.53813124 +/-    0.0003
Geocenter to KBO     32.71438046 +/-    0.0003
# Hcoef:  6.12

The following table shows the complete astrometric record for 09YG19. 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 (09YG19) followed by the observatory code and reference code for the source of the astrometry.

2009 12  25.04565  03 53 17.470  +16 53 04.30  20.7R 09YG19    809  C~0Ctl      
2009 12  25.10468  03 53 17.113  +16 53 03.33  21.2R 09YG19    809  C~0Ctl      
2009 12  25.15681  03 53 16.903  +16 53 02.97  20.5R 09YG19    809  C~0Ctl      
2009 12  26.03775  03 53 12.76   +16 52 53.5         09YG19    809  C~0Ctl      
2009 12  26.09391  03 53 12.40   +16 52 53.5   20.8R 09YG19    809  C~0Ctl      
2009 12  26.15003  03 53 12.14   +16 52 53.7         09YG19    809  C~0Ctl      
2009 12  27.04073  03 53 07.96   +16 52 45.0         09YG19    809  C~0Ctl      
2009 12  27.09505  03 53 07.71   +16 52 44.6         09YG19    809  C~0Ctl      
2009 12  27.14941  03 53 07.43   +16 52 43.5         09YG19    809  C~0Ctl      
2010 01  06.03993  03 52 25.39   +16 51 32.0   21.2R 09YG19    809  C~0Ctl      
2010 01  06.08233  03 52 25.26   +16 51 31.6   21.0R 09YG19    809  C~0Ctl      
2010 01  06.12461  03 52 25.13   +16 51 31.6         09YG19    809  C~0Ctl      
2010 02  09.06950  03 51 19.60   +16 52 07.6         09YG19    807  C~0DxO      
2010 02  10.04604  03 51 19.71   +16 52 16.4         09YG19    807  C~0DxO      
2010 10  09.37451  04 09 11.927  +17 47 27.75  21.0R 09YG19    688              
2010 10  09.44906  04 09 11.641  +17 47 26.63        09YG19    688              
2010 10  10.44399  04 09 08.089  +17 47 13.79  22.0w 09YG19    F51  C~1vW9      
2010 10  10.45901  04 09 08.044  +17 47 13.51  21.4w 09YG19    F51  C~1vW9      
2010 10  10.47372  04 09 07.969  +17 47 13.29  21.7w 09YG19    F51  C~1vW9      
2011 10  26.41876  04 16 59.960  +18 17 07.07  21.4w 09YG19    F51  C~1vW9      
2011 10  26.43327  04 16 59.892  +18 17 06.85  21.4w 09YG19    F51  C~1vW9      
2011 10  26.44779  04 16 59.820  +18 17 06.64  21.6w 09YG19    F51  C~1vW9      
2011 10  26.46238  04 16 59.747  +18 17 06.44  21.6w 09YG19    F51  C~1vW9      
2011 12  24.24355  04 11 23.69   +18 04 07.3   21.1R 09YG19    688  C~0kIT      
2011 12  24.29271  04 11 23.43   +18 04 06.8         09YG19    688  C~0kIT      
2012 10  23.428037 04 26 08.40   +18 49 09.7   21.1R 09YG19    G89  C~0kIT      
2012 10  23.456764 04 26 08.27   +18 49 09.3   21.7R 09YG19    G89  C~0kIT      
2012 10  25.432412 04 25 59.22   +18 48 45.9   21.0R 09YG19    G89  C~0kIT      
2012 10  25.462758 04 25 59.08   +18 48 45.5   21.2R 09YG19    G89  C~0kIT      
2012 10  25.493104 04 25 58.94   +18 48 45.1   21.5R 09YG19    G89  C~0kIT      
2012 12  12.106966 04 21 26.75   +18 38 42.8   21.1R 09YG19    G89  C~0mP3      
2012 12  12.135910 04 21 26.58   +18 38 42.5   20.7R 09YG19    G89  C~0mP3      
2012 12  12.164852 04 21 26.41   +18 38 42.2   20.9R 09YG19    G89  C~0mP3      
2012 12  13.157832 04 21 20.58   +18 38 31.2   20.7R 09YG19    G89  C~0mP3      
2012 12  13.180636 04 21 20.45   +18 38 31.0   21.0R 09YG19    G89  C~0mP3      
2012 12  13.203441 04 21 20.31   +18 38 30.7   21.3R 09YG19    G89  C~0mP4      
2013 10  28.60089  04 34 41.394  +19 17 53.57  20.8i 09YG19    F51  C~1vW9      
2013 10  28.61345  04 34 41.325  +19 17 53.12  20.7i 09YG19    F51  C~1vW9      
2013 10  28.63450  04 34 41.224  +19 17 53.18  20.5z 09YG19    F51  C~1vW9      
2013 11  27.35587  04 31 55.667  +19 12 06.83  21.3w 09YG19    F51  C~1vW9      
2013 11  27.37113  04 31 55.567  +19 12 06.65  21.3w 09YG19    F51  C~1vW9      
2013 11  27.38634  04 31 55.474  +19 12 06.53  21.4w 09YG19    F51  C~1vW9      
2013 11  27.40161  04 31 55.382  +19 12 06.33  21.3w 09YG19    F51  C~1vW9      
2014 02  26.23856  04 26 35.358  +19 07 22.96  21.4w 09YG19    F51  C~1vW9      
2014 02  26.25188  04 26 35.388  +19 07 22.95  21.6w 09YG19    F51  C~1vW9      
2014 02  26.27839  04 26 35.413  +19 07 23.47  21.4w 09YG19    F51  C~1vW9      
2014 10  26.61163  04 43 44.170  +19 45 59.36  21.2w 09YG19    F51  C~1vW9      
2014 10  26.61999  04 43 44.124  +19 45 59.22  21.4w 09YG19    F51  C~1vW9      
2014 10  26.62843  04 43 44.069  +19 45 59.23  21.4w 09YG19    F51  C~1vW9      
2014 10  26.63684  04 43 44.053  +19 45 59.33  21.4w 09YG19    F51  C~1vW9      
2014 11  12.55751  04 42 19.136  +19 43 09.96  20.8i 09YG19    F51  C~1vW9      
2014 11  12.57027  04 42 19.074  +19 43 09.83  21.2i 09YG19    F51  C~1vW9      
2014 11  12.58296  04 42 18.994  +19 43 09.83  21.1i 09YG19    F51  C~1vW9      
2014 11  12.59575  04 42 18.939  +19 43 09.69  20.8i 09YG19    F51  C~1vW9      
2014 11  27.50914  04 40 51.665  +19 40 32.68  21.0w 09YG19    F51  C~1vW9      
2014 11  27.52244  04 40 51.585  +19 40 32.32  21.0w 09YG19    F51  C~1vW9      
2014 11  27.53566  04 40 51.500  +19 40 32.41  21.2w 09YG19    F51  C~1vW9      
2014 11  27.54891  04 40 51.429  +19 40 32.06  21.2w 09YG19    F51  C~1vW9      
2014 12  13.29275  04 39 15.772  +19 37 55.98  21.2w 09YG19    F51  C~1vW9      
2014 12  13.30536  04 39 15.692  +19 37 55.85  21.1w 09YG19    F51  C~1vW9      
2014 12  13.31802  04 39 15.619  +19 37 55.76  21.1w 09YG19    F51  C~1vW9      
2014 12  13.33074  04 39 15.544  +19 37 55.69  21.2w 09YG19    F51  C~1vW9      
2015 01  06.38121  04 37 03.707  +19 34 57.54  20.8i 09YG19    F51  C~1vW9      
2015 01  06.39479  04 37 03.660  +19 34 57.74  21.1i 09YG19    F51  C~1vW9      
2015 01  06.40833  04 37 03.577  +19 34 57.56  21.3i 09YG19    F51  C~1vW9      
2015 12  07.48152  04 48 44.335  +20 05 31.05  21.5w 09YG19    F51  C~1fLV      
2015 12  07.49273  04 48 44.311  +20 05 31.02  21.4w 09YG19    F51  C~1fLV      
2015 12  07.50399  04 48 44.197  +20 05 30.85  21.7w 09YG19    F51  C~1fLV      

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 (   0.57)      0.00 (   0.41)
  2   0.0002     -5.21    -0.44       0.12     0.21
  3   0.0003     -8.24     0.24       0.40     0.21
  4   0.0027    -68.37 (   0.87)      3.59 (  -1.05)
  5   0.0029    -73.42    -0.25       4.67    -0.28
  6   0.0030    -77.03     0.07       5.65     0.40
  7   0.0055   -137.52     0.01       9.70    -0.13
  8   0.0056   -141.11     0.16      10.06    -0.07
  9   0.0058   -145.27    -0.26       9.83    -0.60
 10   0.0328   -750.31 (  -0.29)     66.57 (   0.53)
 11   0.0330   -752.22     0.17      66.57     0.26
 12   0.0331   -754.04 (   0.71)     66.97 (   0.39)
 13   0.1260  -1665.98     0.19     300.63    -0.23
 14   0.1287  -1662.58 (  -0.39)    308.90 (   0.77)
 15   0.7894  14063.89 (   0.28)    476.51 (   0.79)
 16   0.7896  14059.65 (   0.03)    476.18 (   0.63)
 17   0.7923  14007.16     0.08     473.15     0.07
 18   0.7924  14006.47     0.22     473.00    -0.06
 19   0.7924  14005.38    -0.07     472.98    -0.04
 20   1.8354  21003.11    -0.08    1001.72     0.16
 21   1.8354  21002.11    -0.04    1001.68     0.13
 22   1.8355  21001.05    -0.05    1001.65     0.11
 23   1.8355  20999.98    -0.06    1001.64     0.11
 24   1.9964  16109.39     0.02    1107.81     0.21
 25   1.9966  16105.63     0.05    1108.00     0.18
 26   2.8292  29136.48     0.03    1558.90     0.01
 27   2.8293  29134.55     0.05    1558.81    -0.06
 28   2.8347  29001.36    -0.11    1557.00     0.09
 29   2.8348  28999.29    -0.05    1556.93     0.05
 30   2.8349  28997.22    -0.00    1556.87     0.01
 31   2.9653  25017.14     0.01    1616.48    -0.11
 32   2.9653  25014.68     0.04    1616.60    -0.11
 33   2.9654  25012.21     0.08    1616.73    -0.10
 34   2.9681  24927.47     0.07    1620.17    -0.15
 35   2.9682  24925.59     0.15    1620.29    -0.12
 36   2.9683  24923.55     0.08    1620.34    -0.16
 37   3.8427  36783.44     0.09    2109.15     0.03
 38   3.8428  36782.37    -0.08    2108.85    -0.26
 39   3.8428  36780.93    -0.02    2109.13     0.03
 40   3.9242  34340.52    -0.09    2130.67    -0.06
 41   3.9242  34339.06    -0.18    2130.71    -0.06
 42   3.9243  34337.70    -0.15    2130.80    -0.01
 43   3.9243  34336.34    -0.12    2130.81    -0.04
 44   4.1730  29706.68    -0.18    2584.57     0.18
 45   4.1730  29707.11     0.02    2584.48     0.02
 46   4.1731  29707.55     0.00    2584.94     0.31
 47   4.8366  44930.68     0.14    2665.00    -0.07
 48   4.8366  44929.98     0.01    2664.95    -0.12
 49   4.8366  44929.18    -0.23    2665.07     0.01
 50   4.8367  44928.96     0.12    2665.20     0.15
 51   4.8830  43662.24    -0.07    2665.97    -0.10
 52   4.8830  43661.32     0.08    2665.96    -0.11
 53   4.8831  43660.15    -0.02    2666.13     0.04
 54   4.8831  43659.32     0.23    2666.10     0.01
 55   4.9239  42362.96    -0.01    2686.87     0.11
 56   4.9240  42361.74    -0.02    2686.67    -0.11
 57   4.9240  42360.51    -0.03    2686.94     0.13
 58   4.9240  42359.43     0.09    2686.73    -0.10
 59   4.9671  40944.36     0.05    2728.76    -0.10
 60   4.9672  40943.17    -0.01    2728.80    -0.11
 61   4.9672  40942.10     0.06    2728.86    -0.10
 62   4.9672  40941.00     0.10    2728.95    -0.06
 63   5.0331  39002.12    -0.10    2829.30    -0.08
 64   5.0331  39001.47     0.22    2829.61     0.15
 65   5.0332  39000.24    -0.05    2829.60     0.08
 66   5.9505  49513.90    -0.08    3267.79     0.12
 67   5.9506  49513.54 (   0.60)   3267.81 (   0.11)
 68   5.9506  49511.84    -0.06    3267.85     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.

09YG19    quality flag:3

Type:         5:2EEE    5:2EEE    5:2EEE

axisobj        56.579    56.596    56.562
ecceobj         0.418     0.418     0.417
incobj          5.151     5.151     5.151
qmin           32.428    32.426    32.431
qmax           80.203    80.235    80.169
amean          55.463    55.463    55.463
amin           54.621    54.587    54.638
amax           56.579    56.596    56.562
emean           0.404     0.405     0.404
emin            0.393     0.393     0.392
emax            0.418     0.418     0.417
imean           3.548     3.541     3.538
imin            3.342     3.316     3.347
imax            3.804     3.743     3.817
excite_mean     0.409     0.409     0.409
fracstop        1.000     1.000     1.000
cjmean          3.020     3.020     3.021

libcent 0       179.7     180.1     181.1
libamp  0       127.3     132.0     124.8
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       194.0     210.6     188.5
kozaiamp        180.0     179.9     180.0