Orbit Fit and Astrometric record for 03YT179

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: 03YT179   
# Created Fri Dec 15 02:37:17 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc:   9.22y
# First observation: 2003/12/24
#  Last observation: 2013/03/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.000089   0.021322   0.000002  -0.000622   0.022482   0.000000
# Chi-squared of fit:     8.87 DOF:   26 RMS:  0.13
# Min/Max residuals:    -0.33    0.27
# Exact a, adot, b, bdot, g, gdot:
  1.472549E-05  2.130421E-02 -2.137396E-07 -6.195730E-04  2.290722E-02 -7.504973E-05
# Covariance matrix:
  3.1689E-13 -1.5793E-13 -3.3858E-15  5.1373E-15  1.9825E-13 -8.9026E-13
 -1.5793E-13  2.5532E-13  5.0038E-15 -8.0427E-15  5.2039E-14  1.3734E-12
 -3.3858E-15  5.0038E-15  1.3175E-13 -2.0964E-14 -1.4794E-16  2.8761E-14
  5.1373E-15 -8.0427E-15 -2.0964E-14  1.1234E-14 -4.0240E-16 -4.5891E-14
  1.9825E-13  5.2039E-14 -1.4794E-16 -4.0240E-16  4.8881E-13  4.1393E-14
 -8.9026E-13  1.3734E-12  2.8761E-14 -4.5891E-14  4.1393E-14  7.8508E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
   -0.241066  111.722976    0.331331   -0.003814   -0.922964  2452997.966993
# Heliocentric elements and errors
Epoch:              2452990.5000  =  2003/12/17
Mean Anomaly:          216.34147 +/-     0.250
Argument of Peri:      333.15948 +/-     0.247
Long of Asc Node:      283.21147 +/-     0.002
Inclination:             1.67720 +/-     0.000
Eccentricity:         0.02156103 +/-    0.0001
Semi-Major Axis:     43.81478799 +/-    0.0052
Time of Perihelion: 2495263.0481 +/-      73.1
Perihelion:          42.87009606 +/-    0.0076
Aphelion:            44.75947991 +/-    0.0078
Period (y)              290.0276 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -16.19497462 +/-    0.0005
Ecliptic Y           41.53655563 +/-    0.0012
Ecliptic Z           -0.18368946 +/-    0.0000
Ecliptic XDOT        -0.00236625 +/-    0.0000
Ecliptic YDOT        -0.00095736 +/-    0.0000
Ecliptic ZDOT        -0.00007386 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   44.58246739 +/-    0.0012
Geocenter to KBO     43.65435365 +/-    0.0013
# Hcoef:  7.41

The following table shows the complete astrometric record for 03YT179. 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 (03YT179) followed by the observatory code and reference code for the source of the astrometry.

2003 12  24.46625  07 33 43.60   +21 26 54.7   23.9g 03YT179   568  Cq9908      
2003 12  24.48949  07 33 43.49   +21 26 55.0   23.9g 03YT179   568  Cq9908      
2003 12  24.51273  07 33 43.40   +21 26 55.3   23.6g 03YT179   568  Cq9908      
2003 12  25.50732  07 33 38.72   +21 27 05.0   24.2g 03YT179   568  Cq9908      
2004 04  15.16266  07 28 02.18   +21 38 56.3         03YT179   675  Cq9908      
2004 04  15.21468  07 28 02.25   +21 38 55.6         03YT179   675  Cq9908      
2004 04  16.22828  07 28 03.57   +21 38 53.0         03YT179   675  Cq9908      
2005 01  08.35658  07 37 37.58   +21 15 44.6         03YT179   568  Cq9908      
2005 01  08.39444  07 37 37.37   +21 15 45.1         03YT179   568  Cq9908      
2005 01  08.43225  07 37 37.19   +21 15 45.4         03YT179   568  Cq9908      
2005 01  15.37950  07 37 02.53   +21 17 03.4         03YT179   568  Cq9908      
2006 01  28.30023  07 41 09.36   +21 05 06.8   24. R 03YT179   675  Cq9908      
2006 01  29.34986  07 41 04.32   +21 05 18.5         03YT179   675  Cq9908      
2006 01  29.35607  07 41 04.30   +21 05 18.5         03YT179   675  Cq9908      
2013 03  12.12459  08 13 49.42   +19 18 46.0   23.3R 03YT179   G37  C~0qSV      
2013 03  12.26538  08 13 49.01   +19 18 47.3         03YT179   G37  C~0qSV      

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    -0.00       0.00    -0.04
  2   0.0001     -1.56    -0.01       0.05     0.02
  3   0.0001     -2.85     0.26       0.15     0.14
  4   0.0029    -68.90     0.04      -0.60    -0.16
  5   0.3085  -4818.52    -0.18     -19.02     0.27
  6   0.3087  -4817.45     0.02     -19.57    -0.26
  7   0.3115  -4798.85     0.13     -19.39    -0.07
  8   1.0428   3334.28    -0.06    -134.29     0.06
  9   1.0429   3331.30    -0.33    -134.27     0.08
 10   1.0430   3328.77    -0.16    -134.39    -0.02
 11   1.0620   2837.95    -0.03    -136.82    -0.00
 12   2.0967   6363.16     0.20    -268.38     0.14
 13   2.0996   6291.60    -0.01    -268.82    -0.06
 14   2.0996   6291.32     0.14    -268.87    -0.10
 15   9.2147  34994.09     0.01   -1174.16    -0.00
 16   9.2151  34987.98    -0.02   -1174.15    -0.01

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.

03YT179    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.697    43.713    43.682
ecceobj         0.022     0.021     0.022
incobj          1.680     1.680     1.680
qmin           41.837    41.875    41.777
qmax           45.513    45.515    45.558
amean          43.603    43.618    43.587
amin           43.271    43.284    43.257
amax           43.941    43.955    43.932
emean           0.021     0.021     0.021
emin            0.004     0.003     0.004
emax            0.037     0.036     0.038
imean           3.484     3.483     3.486
imin            2.764     2.767     2.763
imax            4.133     4.127     4.139
excite_mean     0.065     0.064     0.065
fracstop        1.000     1.000     1.000
cjmean          3.092     3.092     3.092

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       172.8     173.1     172.7
kozaiamp        180.0     179.9     180.0