Orbit Fit and Astrometric record for 03YS179

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: 03YS179   
# Created Fri Dec 15 02:37:17 2017
# Orbit generated from Bernstein formalism
# Fitting   20 observations of   20
# Arc:   9.22y
# First observation: 2003/12/24
#  Last observation: 2013/03/14
Preliminary a, adot, b, bdot, g, gdot:
  -0.000317   0.022061  -0.000017   0.001309   0.022481   0.000000
# Chi-squared of fit:     8.85 DOF:   34 RMS:  0.12
# Min/Max residuals:    -0.24    0.23
# Exact a, adot, b, bdot, g, gdot:
  1.555649E-05  2.203749E-02  6.248243E-07  1.303937E-03  2.331163E-02 -3.634258E-04
# Covariance matrix:
  3.0373E-13 -1.8595E-13  9.9578E-15 -1.0787E-14  1.3292E-13 -9.6484E-13
 -1.8595E-13  1.8841E-13 -1.0434E-14  1.1784E-14 -8.3140E-14  1.0457E-12
  9.9578E-15 -1.0434E-14  1.3547E-13 -2.1692E-14  6.1930E-15 -6.0534E-14
 -1.0787E-14  1.1784E-14 -2.1692E-14  7.9913E-15 -5.5891E-15  6.8052E-14
  1.3292E-13 -8.3140E-14  6.1930E-15 -5.5891E-15  2.1312E-13 -5.1923E-13
 -9.6484E-13  1.0457E-12 -6.0534E-14  6.8052E-14 -5.1923E-13  6.0442E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.569146  111.290366    0.324400    0.025410   -0.925082  2452997.964183
# Heliocentric elements and errors
Epoch:              2452990.5000  =  2003/12/17
Mean Anomaly:          273.15827 +/-     0.169
Argument of Peri:      114.09092 +/-     0.191
Long of Asc Node:       86.55775 +/-     0.002
Inclination:             3.72611 +/-     0.000
Eccentricity:         0.02546081 +/-    0.0001
Semi-Major Axis:     43.86085575 +/-    0.0043
Time of Perihelion: 2478584.6111 +/-      49.7
Perihelion:          42.74412296 +/-    0.0064
Aphelion:            44.97758854 +/-    0.0065
Period (y)              290.4851 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.60761359 +/-    0.0003
Ecliptic Y           40.93713049 +/-    0.0008
Ecliptic Z            1.17468178 +/-    0.0000
Ecliptic XDOT        -0.00239880 +/-    0.0000
Ecliptic YDOT        -0.00098975 +/-    0.0000
Ecliptic ZDOT         0.00015207 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.82723049 +/-    0.0008
Geocenter to KBO     42.89703761 +/-    0.0008
# Hcoef:  7.05

The following table shows the complete astrometric record for 03YS179. 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 (03YS179) followed by the observatory code and reference code for the source of the astrometry.

2003 12  24.46344  07 33 06.83   +23 18 15.5   23.4g 03YS179   568  Cq9908      
2003 12  24.48664  07 33 06.72   +23 18 15.8   23.6g 03YS179   568  Cq9908      
2003 12  24.50988  07 33 06.62   +23 18 16.2   23.8g 03YS179   568  Cq9908      
2003 12  25.50403  07 33 01.82   +23 18 28.0   23.6g 03YS179   568  Cq9908      
2004 04  15.16648  07 27 18.66   +23 29 45.4         03YS179   675  Cq9908      
2004 04  15.21821  07 27 18.72   +23 29 45.3         03YS179   675  Cq9908      
2004 04  16.20223  07 27 20.06   +23 29 41.0         03YS179   675  Cq9908      
2005 01  08.35280  07 37 18.66   +23 13 42.2   23.0r 03YS179   568  Cq9908      
2005 01  08.39064  07 37 18.47   +23 13 42.7   23.1r 03YS179   568  Cq9908      
2005 01  08.42845  07 37 18.27   +23 13 43.2   23.1r 03YS179   568  Cq9908      
2006 01  28.30717  07 41 08.06   +23 09 27.2         03YS179   675  Cq9908      
2006 01  29.29718  07 41 03.19   +23 09 39.0         03YS179   675  Cq9908      
2006 01  29.38287  07 41 02.77   +23 09 40.0   23. R 03YS179   675  Cq9908      
2008 11  02.68638  08 02 41.87   +22 23 03.9   23.9R 03YS179   250  S~06Ah      
2008 11  02.69333  08 02 41.87   +22 23 04.0         03YS179   250  S~06Ah      
2008 11  02.70027  08 02 41.87   +22 23 04.0         03YS179   250  S~06Ah      
2008 11  02.70652  08 02 41.87   +22 23 04.0         03YS179   250  S~06Ah      
2013 03  13.16798  08 16 13.08   +22 01 39.1   22.7R 03YS179   695  C~0ud7      
2013 03  14.15346  08 16 10.28   +22 01 46.4         03YS179   695  C~0ud7      
2013 03  14.24296  08 16 10.03   +22 01 46.7         03YS179   695  C~0ud7      

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    -0.13       0.00     0.05
  2   0.0001     -1.54    -0.08       0.06     0.08
  3   0.0001     -2.97     0.08       0.24     0.23
  4   0.0028    -70.12    -0.12       1.50     0.03
  5   0.3086  -4843.04     0.21     -48.14    -0.19
  6   0.3087  -4842.21     0.11     -48.11    -0.07
  7   0.3114  -4823.33    -0.05     -49.65    -0.18
  8   1.0428   3469.36     0.03     288.42     0.02
  9   1.0429   3466.70     0.11     288.48     0.05
 10   1.0430   3463.89     0.06     288.52     0.06
 11   2.0968   6632.23    -0.06     567.44    -0.24
 12   2.0995   6563.96    -0.19     567.59    -0.10
 13   2.0997   6558.08    -0.11     567.58    -0.07
 14   4.8603  24846.34    -0.00    1219.37     0.08
 15   4.8603  24846.32     0.02    1219.47     0.15
 16   4.8603  24846.32     0.07    1219.47     0.13
 17   4.8604  24846.32     0.11    1219.47     0.11
 18   9.2175  36373.60     0.11    2437.85    -0.11
 19   9.2202  36332.79    -0.16    2435.99     0.13
 20   9.2205  36329.23     0.00    2435.47    -0.17

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.

03YS179    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.738    43.751    43.725
ecceobj         0.021     0.020     0.021
incobj          3.722     3.722     3.722
qmin           41.986    41.991    41.957
qmax           45.463    45.475    45.460
amean          43.641    43.654    43.629
amin           43.312    43.326    43.297
amax           43.982    43.987    43.970
emean           0.019     0.019     0.019
emin            0.002     0.001     0.002
emax            0.034     0.034     0.035
imean           1.988     1.989     1.986
imin            1.239     1.245     1.233
imax            2.614     2.614     2.617
excite_mean     0.040     0.040     0.040
fracstop        1.000     1.000     1.000
cjmean          3.095     3.095     3.095

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       199.8     200.2     200.7
kozaiamp        179.9     180.0     180.0