Orbit Fit and Astrometric record for 03YK179

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: 03YK179   
# Created Mon Oct 23 01:37:28 2017
# Orbit generated from Bernstein formalism
# Fitting   19 observations of   21
# Arc:   9.12y
# First observation: 2003/10/03
#  Last observation: 2012/11/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000938   0.022001   0.000204  -0.007813   0.023457   0.000000
# Chi-squared of fit:   183.98 DOF:   32 RMS:  0.55
# Min/Max residuals:    -0.78    1.04
# Exact a, adot, b, bdot, g, gdot:
  1.646585E-05  2.101926E-02 -2.714872E-06 -7.468811E-03  2.368287E-02 -2.712750E-03
# Covariance matrix:
  4.4906E-13 -1.4661E-13 -2.6947E-14  3.9555E-14  3.3810E-13 -5.9810E-13
 -1.4661E-13  1.2004E-13  2.5273E-14 -3.8178E-14 -6.6046E-14  5.8953E-13
 -2.6947E-14  2.5273E-14  1.1689E-13 -3.3108E-14 -1.2176E-14  1.4450E-13
  3.9555E-14 -3.8178E-14 -3.3108E-14  3.0047E-14  1.6843E-14 -2.1887E-13
  3.3810E-13 -6.6046E-14 -1.2176E-14  1.6843E-14  3.9187E-13 -2.4300E-13
 -5.9810E-13  5.8953E-13  1.4450E-13 -2.1887E-13 -2.4300E-13  3.3861E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.764747   69.202193    0.865629    0.006802   -0.506799  2452915.947643
# Heliocentric elements and errors
Epoch:              2452910.5000  =  2003/09/28
Mean Anomaly:          268.96564 +/-     0.047
Argument of Peri:      284.98092 +/-     0.032
Long of Asc Node:      250.17107 +/-     0.000
Inclination:            19.58947 +/-     0.000
Eccentricity:         0.14393695 +/-    0.0001
Semi-Major Axis:     41.78510365 +/-    0.0045
Time of Perihelion: 2477858.3709 +/-      12.2
Perihelion:          35.77068319 +/-    0.0053
Aphelion:            47.79952411 +/-    0.0063
Period (y)              270.1099 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           15.97692696 +/-    0.0004
Ecliptic Y           39.63980176 +/-    0.0010
Ecliptic Z            0.56346466 +/-    0.0000
Ecliptic XDOT        -0.00238375 +/-    0.0000
Ecliptic YDOT         0.00057448 +/-    0.0000
Ecliptic ZDOT        -0.00086737 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   42.74217555 +/-    0.0010
Geocenter to KBO     42.22460580 +/-    0.0011
# Hcoef:  7.10

The following table shows the complete astrometric record for 03YK179. 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 (03YK179) followed by the observatory code and reference code for the source of the astrometry.

2003 10  03.44690  04 29 32.48   +22 35 09.7   24.3i 03YK179   568  Cq9907      
2003 10  03.49804  04 29 32.38   +22 35 09.2   24.0i 03YK179   568  Cq9907      
2003 10  03.55925  04 29 32.23   +22 35 08.9   24.0i 03YK179   568  Cq9907      
2003 12  16.31981  04 24 08.17   +22 18 23.8   23.4g 03YK179   568  Cq9907      
2003 12  16.34630  04 24 08.04   +22 18 23.1   23.4g 03YK179   568  Cq9907      
2003 12  16.37261  04 24 07.92   +22 18 22.9   23.9g 03YK179   568  Cq9907      
2003 12  17.39162  04 24 02.87   +22 18 07.1         03YK179   568  Cq9907      
2003 12  21.190501 04 23 44.32   +22 17 07.0         03YK179   645  C~1RHS      
2003 12  21.191330 04 23 44.32   +22 17 07.0         03YK179   645  C~1RHS      
2003 12  21.193818 04 23 44.31   +22 17 07.0         03YK179   645  C~1RHS      
2004 12  11.36844  04 29 58.90   +22 05 15.4   23.7r 03YK179   568  Cq9907      
2004 12  11.39721  04 29 58.75   +22 05 15.1   23.8r 03YK179   568  Cq9907      
2004 12  11.42672  04 29 58.60   +22 05 14.7   24.0r 03YK179   568  Cq9907      
2005 11  04.44006  04 38 37.26   +21 59 07.0   23.5R 03YK179   695  Cq9907      
2005 11  04.47426  04 38 37.11   +21 59 06.5   23.5R 03YK179   695  Cq9907      
2006 10  23.493477 04 44 57.35   +21 45 23.1         03YK179   645  C~1RHS      
2006 10  23.494306 04 44 57.34   +21 45 23.1         03YK179   645  C~1RHS      
2006 10  23.496794 04 44 57.33   +21 45 23.1         03YK179   645  C~1RHS      
2012 11  14.33783  05 16 47.93   +19 47 20.5   20.3V 03YK179   691  C~0m5a      
2012 11  14.35571  05 16 47.07   +19 47 21.2   20.6V 03YK179   691  C~0m5a      
2012 11  14.37358  05 16 46.16   +19 47 22.2   20.6V 03YK179   691  C~0m5a      

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    -0.50       0.00    -0.47
  2   0.0001     -1.45    -0.26      -0.28    -0.61
  3   0.0003     -3.54    -0.32      -0.26    -0.41
  4   0.2023  -4599.13    -0.20    -285.58    -0.39
  5   0.2023  -4601.02    -0.19    -285.98    -0.67
  6   0.2024  -4602.70     0.03    -285.91    -0.49
  7   0.2052  -4674.45     0.34    -290.16    -0.11
  8   0.2156  -4938.39     0.52    -307.69    -0.18
  9   0.2156  -4938.39     0.58    -307.69    -0.17
 10   0.2156  -4938.53     0.61    -307.67    -0.14
 11   1.1908     88.44    -0.70   -1829.27     0.55
 12   1.1908     86.34    -0.67   -1829.25     0.69
 13   1.1909     84.22    -0.59   -1829.33     0.73
 14   2.0890   7169.52    -0.45   -3241.43     1.04
 15   2.0891   7167.38    -0.37   -3241.64     0.99
 16   3.0556  12317.37     0.95   -4766.22     0.11
 17   3.0556  12317.23     0.85   -4766.20     0.13
 18   3.0556  12317.10     0.85   -4766.18     0.16
 19   9.1167  38730.19 (  22.78) -14753.99 (  -4.90)
 20   9.1168  38717.68 (  11.51) -14752.21 (  -3.02)
 21   9.1168  38704.46    -0.46  -14750.07    -0.78

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.

03YK179    quality flag:3

Type:       SCATEXTD  SCATEXTD  SCATEXTD

axisobj        41.906    41.919    41.893
ecceobj         0.139     0.138     0.139
incobj         19.554    19.554    19.554
qmin           35.185    35.224    35.244
qmax           48.511    48.495    48.357
amean          41.690    41.704    41.673
amin           41.339    41.370    41.333
amax           42.076    42.075    42.043
emean           0.135     0.135     0.134
emin            0.119     0.119     0.117
emax            0.153     0.153     0.152
imean          21.334    21.330    21.341
imin           20.628    20.632    20.645
imax           21.940    21.930    21.951
excite_mean     0.388     0.388     0.388
fracstop        1.000     1.000     1.000
cjmean          2.893     2.893     2.893

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       176.8     177.2     175.8
kozaiamp        180.0     179.9     180.0