Orbit Fit and Astrometric record for 03YL179

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: 03YL179   
# Created Tue Oct 24 01:37:27 2017
# Orbit generated from Bernstein formalism
# Fitting   25 observations of   28
# Arc:   4.78y
# First observation: 2003/12/16
#  Last observation: 2008/09/25
Preliminary a, adot, b, bdot, g, gdot:
   0.000215   0.026699  -0.000006  -0.001141   0.025617   0.000000
# Chi-squared of fit:    19.72 DOF:   44 RMS:  0.16
# Min/Max residuals:    -0.41    0.25
# Exact a, adot, b, bdot, g, gdot:
  1.618605E-05  2.673679E-02 -2.734806E-07 -1.149449E-03  2.646662E-02 -1.723896E-04
# Covariance matrix:
  3.1442E-13 -2.7683E-13 -5.1131E-15  7.1904E-15  6.5479E-14 -1.2850E-12
 -2.7683E-13  5.8952E-13  1.0607E-14 -1.5224E-14 -5.7497E-13  2.6812E-12
 -5.1131E-15  1.0607E-14  1.8675E-13 -5.8408E-14 -7.1808E-15  5.6138E-14
  7.1904E-15 -1.5224E-14 -5.8408E-14  2.6936E-14  1.0853E-14 -7.9733E-14
  6.5479E-14 -5.7497E-13 -7.1808E-15  1.0853E-14  1.1681E-12 -1.8427E-12
 -1.2850E-12  2.6812E-12  5.6138E-14 -7.9733E-14 -1.8427E-12  1.4148E-11
#      lat0       lon0       xBary       yBary       zBary        JD0
    0.556826   69.370178   -0.242295    0.009313   -0.951242  2452989.823833
# Heliocentric elements and errors
Epoch:              2452980.5000  =  2003/12/07
Mean Anomaly:          329.70517 +/-     1.969
Argument of Peri:      198.11049 +/-     1.992
Long of Asc Node:      262.18276 +/-     0.001
Inclination:             2.51814 +/-     0.000
Eccentricity:         0.00537694 +/-    0.0001
Semi-Major Axis:     38.91750474 +/-    0.0080
Time of Perihelion: 2460442.9576 +/-     485.0
Perihelion:          38.70824782 +/-    0.0090
Aphelion:            39.12676166 +/-    0.0091
Period (y)              242.7871 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X           13.41604472 +/-    0.0005
Ecliptic Y           36.33776725 +/-    0.0014
Ecliptic Z            0.36717047 +/-    0.0000
Ecliptic XDOT        -0.00259863 +/-    0.0000
Ecliptic YDOT         0.00095259 +/-    0.0000
Ecliptic ZDOT        -0.00011892 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   38.73704169 +/-    0.0014
Geocenter to KBO     37.78344210 +/-    0.0015
# Hcoef:  7.47

The following table shows the complete astrometric record for 03YL179. 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 (03YL179) followed by the observatory code and reference code for the source of the astrometry.

2003 12  16.32309  04 30 23.83   +22 24 22.0   23.2g 03YL179   568  Cq9907      
2003 12  16.34956  04 30 23.69   +22 24 21.9   22.8g 03YL179   568  Cq9907      
2003 12  16.37586  04 30 23.54   +22 24 21.6   23.3g 03YL179   568  Cq9907      
2003 12  17.39487  04 30 17.94   +22 24 08.5         03YL179   568  Cq9907      
2003 12  21.194225 04 29 57.57   +22 23 21.6   22.8V 03YL179   645  C~1scs      
2003 12  21.195058 04 29 57.56   +22 23 21.5   22.5V 03YL179   645  C~1scs      
2003 12  21.197546 04 29 57.54   +22 23 21.5   23.4V 03YL179   645  C~1scs      
2004 12  11.37032  04 37 23.58   +22 34 43.8   23.3r 03YL179   568  Cq9907      
2004 12  11.39908  04 37 23.40   +22 34 43.5   23.1r 03YL179   568  Cq9907      
2004 12  11.42862  04 37 23.23   +22 34 43.1   23.0r 03YL179   568  Cq9907      
2004 12  12.29368  04 37 18.36   +22 34 32.8   23.2r 03YL179   568  Cq9907      
2005 10  04.40775  04 49 13.78   +22 52 41.0   23.0R 03YL179   675  Cq9907      
2005 10  04.46068  04 49 13.67   +22 52 40.9   23.0R 03YL179   675  Cq9907      
2005 10  04.50184  04 49 13.58   +22 52 40.8   22.9R 03YL179   675  Cq9907      
2005 11  04.48081  04 47 23.87   +22 49 29.2   23. R 03YL179   695  Cq9907      
2005 11  04.51440  04 47 23.71   +22 49 28.8   23. R 03YL179   695  Cq9907      
2006 09  20.57384  04 56 03.21   +22 59 39.1   23.7R 03YL179   568  Cv2424      
2006 09  20.60657  04 56 03.20   +22 59 39.0   23.7R 03YL179   568  Cv2424      
2006 10  28.434769 04 54 32.64   +22 57 14.0   23.2V 03YL179   645  C~1scs      
2006 10  28.435185 04 54 32.64   +22 57 14.0         03YL179   645  C~1scs      
2006 10  28.435602 04 54 32.64   +22 57 14.0         03YL179   645  C~1scs      
2006 10  28.436007 04 54 32.63   +22 57 14.0         03YL179   645  C~1scs      
2006 10  28.438090 04 54 32.62   +22 57 14.0         03YL179   645  C~1scs      
2006 10  28.438495 04 54 32.62   +22 57 14.0         03YL179   645  C~1scs      
2008 09  25.71699  05 09 02.31   +23 09 26.2   25.0R 03YL179   250  S~06Ah      
2008 09  25.72324  05 09 02.31   +23 09 26.2         03YL179   250  S~06Ah      
2008 09  25.73018  05 09 02.30   +23 09 26.2         03YL179   250  S~06Ah      
2008 09  25.73643  05 09 02.30   +23 09 26.2         03YL179   250  S~06Ah      

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    -0.04       0.00    -0.09
  2   0.0001     -1.93     0.10       0.20     0.12
  3   0.0001     -4.04     0.06       0.21     0.16
  4   0.0029    -82.78    -0.31      -0.95    -0.10
  5   0.0133   -369.13 (   0.94)     -4.36 (   0.10)
  6   0.0133   -369.29 (   0.85)     -4.44 (   0.03)
  7   0.0133   -369.56 (   0.76)     -4.40 (   0.07)
  8   0.9885   5847.31     0.17    -233.22     0.01
  9   0.9886   5844.80    -0.03    -233.17     0.08
 10   0.9887   5842.41    -0.04    -233.24     0.03
 11   0.9910   5774.13    -0.04    -233.98     0.02
 12   1.8017  15758.52     0.08    -444.95    -0.28
 13   1.8019  15756.99     0.17    -444.87    -0.20
 14   1.8020  15755.74     0.18    -444.82    -0.16
 15   1.8868  14219.12     0.23    -450.20     0.01
 16   1.8869  14216.86     0.25    -450.32    -0.10
 17   2.7632  21471.63    -0.41    -678.79    -0.23
 18   2.7633  21471.48    -0.32    -678.88    -0.32
 19   2.8668  20199.60    -0.02    -685.24     0.18
 20   2.8668  20199.60     0.00    -685.24     0.18
 21   2.8668  20199.60     0.03    -685.24     0.18
 22   2.8668  20199.47    -0.09    -685.22     0.19
 23   2.8668  20199.33    -0.10    -685.21     0.21
 24   2.8668  20199.33    -0.08    -685.21     0.21
 25   4.7786  32414.90     0.02   -1152.19    -0.04
 26   4.7786  32414.90     0.09   -1152.19    -0.04
 27   4.7787  32414.76     0.02   -1152.18    -0.03
 28   4.7787  32414.76     0.08   -1152.18    -0.03

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.

03YL179    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        39.100    39.124    39.076
ecceobj         0.009     0.010     0.009
incobj          2.517     2.517     2.517
qmin           37.250    37.342    37.152
qmax           40.572    40.558    40.630
amean          38.859    38.883    38.835
amin           38.571    38.596    38.553
amax           39.144    39.175    39.131
emean           0.019     0.018     0.019
emin            0.000     0.000     0.000
emax            0.037     0.036     0.039
imean           4.488     4.551     4.419
imin            1.784     1.772     1.812
imax            5.893     5.931     5.856
excite_mean     0.081     0.082     0.080
fracstop        1.000     1.000     1.000
cjmean          3.040     3.040     3.040

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       178.7     183.5     179.4
kozaiamp        180.0     180.0     180.0