Orbit Fit and Astrometric record for 03YJ179

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: 03YJ179   
# Created Mon Apr 22 01:08:17 2019
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting   28 observations of   28
# Arc:  15.15y
# First observation: 2003/12/16
#  Last observation: 2019/02/08
# Chi-squared of fit:    30.79 DOF:   50 RMS:  0.19
# Min/Max residuals:    -0.38    0.52
# Exact a, adot, b, bdot, g, gdot:
  1.452436E-05  2.616944E-02  6.771770E-08  5.392003E-04  2.544422E-02 -4.874415E-04
# Covariance matrix:
  1.6645E-13 -6.8118E-14  1.8545E-15 -1.1519E-15  1.4911E-14 -1.5192E-13
 -6.8118E-14  6.2380E-14 -2.0483E-15  1.1640E-15 -6.7509E-14  1.6220E-13
  1.8545E-15 -2.0483E-15  9.2134E-14 -1.1208E-14  2.6247E-15 -5.6306E-15
 -1.1519E-15  1.1640E-15 -1.1208E-14  3.1518E-15 -1.2420E-15  3.1798E-15
  1.4911E-14 -6.7509E-14  2.6247E-15 -1.2420E-15  2.0407E-13 -1.9495E-13
 -1.5192E-13  1.6220E-13 -5.6306E-15  3.1798E-15 -1.9495E-13  4.4484E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.865682   66.845810   -0.283875    0.014266   -0.939609  2452989.818923
# Heliocentric elements and errors
Epoch:              2452990.5000  =  2003/12/17
Mean Anomaly:          350.90396 +/-     0.022
Argument of Peri:       46.40052 +/-     0.026
Long of Asc Node:       31.60817 +/-     0.003
Inclination:             1.45036 +/-     0.000
Eccentricity:         0.08167215 +/-    0.0001
Semi-Major Axis:     43.76479099 +/-    0.0041
Time of Perihelion: 2455662.4947 +/-      15.9
Perihelion:          40.19042640 +/-    0.0047
Aphelion:            47.33915558 +/-    0.0053
Period (y)              289.5313 +/-      0.04
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           15.55652947 +/-    0.0003
Ecliptic Y           37.11059134 +/-    0.0006
Ecliptic Z            0.59377962 +/-    0.0000
Ecliptic XDOT        -0.00261434 +/-    0.0000
Ecliptic YDOT         0.00105192 +/-    0.0000
Ecliptic ZDOT         0.00005737 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   40.24369387 +/-    0.0006
Geocenter to KBO     39.30171165 +/-    0.0007
# Hcoef:  7.04

The following table shows the complete astrometric record for 03YJ179. 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 (03YJ179) followed by the observatory code and reference code for the source of the astrometry.

2003 12  16.31818  04 19 24.41   +22 18 22.3   23.2g 03YJ179   568  Cq9907      
2003 12  16.34467  04 19 24.26   +22 18 21.9   23.3g 03YJ179   568  Cq9907      
2003 12  16.37098  04 19 24.12   +22 18 21.6   23.5g 03YJ179   568  Cq9907      
2003 12  17.39000  04 19 18.87   +22 18 08.8         03YJ179   568  Cq9907      
2003 12  17.42270  04 19 18.68   +22 18 08.9         03YJ179   568  Cq9907      
2004 12  11.36654  04 26 09.54   +22 35 46.8   22.5r 03YJ179   568  Cq9907      
2004 12  11.39535  04 26 09.38   +22 35 46.5   22.6r 03YJ179   568  Cq9907      
2004 12  11.42484  04 26 09.22   +22 35 46.1   22.6r 03YJ179   568  Cq9907      
2004 12  12.28992  04 26 04.61   +22 35 35.9   22.6r 03YJ179   568  Cq9907      
2005 10  04.42174  04 37 42.86   +23 00 42.8         03YJ179   675  Cq9907      
2005 10  04.47528  04 37 42.74   +23 00 42.7   22.8R 03YJ179   675  Cq9907      
2005 10  04.51629  04 37 42.65   +23 00 42.5         03YJ179   675  Cq9907      
2005 11  04.42651  04 35 51.27   +22 57 42.8   22. R 03YJ179   695  Cq9907      
2005 11  04.46117  04 35 51.10   +22 57 42.7   22. R 03YJ179   695  Cq9907      
2005 12  24.26442  04 31 28.03   +22 49 02.2   23.6r 03YJ179   568  C~0D39      
2005 12  24.36213  04 31 27.53   +22 49 01.2   23.6r 03YJ179   568  C~0D39      
2005 12  24.39647  04 31 27.36   +22 49 00.7   23.5r 03YJ179   568  C~0D39      
2005 12  25.40044  04 31 22.38   +22 48 50.0   23.5r 03YJ179   568  C~0D39      
2007 09  16.50822  04 50 47.52   +23 27 04.5         03YJ179   675  Cy6720      
2007 09  17.44513  04 50 47.41   +23 27 06.0   22.5R 03YJ179   675  Cy6720      
2008 03  04.16516  04 41 30.26   +23 11 20.5         03YJ179   695  Cy7592      
2010 09  07.45575  05 09 47.20   +23 58 26.0         03YJ179   675  C~0WzD      
2010 09  07.50531  05 09 47.26   +23 58 26.2         03YJ179   675  C~0WzD      
2010 09  07.51027  05 09 47.27   +23 58 26.3         03YJ179   675  C~0WzD      
2010 09  08.46468  05 09 48.54   +23 58 29.6         03YJ179   675  C~0WzD      
2010 09  08.49349  05 09 48.58   +23 58 29.3         03YJ179   675  C~0WzD      
2019 02  08.176610 05 52 50.730  +24 40 31.81  22.8G 03YJ179   G37  C~2zmb      
2019 02  08.253960 05 52 50.479  +24 40 31.57        03YJ179   G37  C~2zmb      

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     0.37       0.00     0.11
  2   0.0001      0.00     0.21       0.00     0.04
  3   0.0001      0.00     0.19       0.00     0.06
  4   0.0029      0.00     0.15       0.00    -0.12
  5   0.0030      0.00    -0.14       0.00     0.39
  6   0.9885      0.00    -0.08       0.00     0.03
  7   0.9886      0.00    -0.12       0.00     0.07
  8   0.9887      0.00    -0.11       0.00     0.02
  9   0.9910      0.00    -0.05       0.00     0.12
 10   1.8018      0.00    -0.38       0.00    -0.17
 11   1.8019      0.00    -0.29       0.00    -0.12
 12   1.8020      0.00    -0.18       0.00    -0.19
 13   1.8867      0.00    -0.03       0.00     0.13
 14   1.8868      0.00    -0.09       0.00     0.33
 15   2.0231      0.00    -0.07       0.00    -0.11
 16   2.0234      0.00    -0.14       0.00    -0.08
 17   2.0235      0.00    -0.08       0.00    -0.21
 18   2.0262      0.00    -0.15       0.00    -0.17
 19   3.7514      0.00     0.52       0.00    -0.31
 20   3.7539      0.00     0.42       0.00    -0.25
 21   4.2159      0.00     0.07       0.00     0.20
 22   6.7273      0.00     0.03       0.00     0.02
 23   6.7274      0.00    -0.05       0.00     0.04
 24   6.7274      0.00     0.01       0.00     0.12
 25   6.7300      0.00     0.00       0.00     0.18
 26   6.7301      0.00     0.08       0.00    -0.23
 27  15.1481      0.00    -0.05       0.00     0.09
 28  15.1484      0.00     0.00       0.00     0.00

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.

03YJ179    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        44.015    44.014    44.015
ecceobj         0.086     0.086     0.086
incobj          1.444     1.444     1.444
qmin           39.055    38.962    38.982
qmax           48.772    48.862    48.859
amean          43.727    43.722    43.727
amin           43.321    43.325    43.317
amax           44.141    44.146    44.143
emean           0.083     0.083     0.083
emin            0.066     0.063     0.065
emax            0.105     0.107     0.107
imean           1.553     1.544     1.556
imin            0.609     0.584     0.606
imax            2.308     2.308     2.308
excite_mean     0.088     0.088     0.088
fracstop        1.000     1.000     1.000
cjmean          3.089     3.089     3.089

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       163.1     189.5     157.5
kozaiamp        180.0     180.0     179.9