Orbit Fit and Astrometric record for 04HD79

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: 04HD79    
# Created Mon Dec 18 02:37:20 2017
# Orbit generated from Bernstein formalism
# Fitting   24 observations of   24
# Arc:   9.13y
# First observation: 2004/04/22
#  Last observation: 2013/06/10
Preliminary a, adot, b, bdot, g, gdot:
  -0.000147   0.019579   0.000002   0.000152   0.021323   0.000000
# Chi-squared of fit:    16.08 DOF:   42 RMS:  0.14
# Min/Max residuals:    -0.64    0.32
# Exact a, adot, b, bdot, g, gdot:
  1.294281E-05  1.941005E-02  3.199536E-06  1.501838E-04  2.156768E-02 -7.510698E-05
# Covariance matrix:
  2.9928E-13 -1.8529E-13  1.1961E-15 -1.5378E-15  2.4962E-13 -1.0740E-12
 -1.8529E-13  2.6321E-13 -1.3104E-15  2.2036E-15 -6.7724E-14  1.5377E-12
  1.1961E-15 -1.3104E-15  1.1593E-13 -1.4043E-14  1.3076E-15 -8.0424E-15
 -1.5378E-15  2.2036E-15 -1.4043E-14  3.5771E-15 -8.2027E-16  1.3122E-14
  2.4962E-13 -6.7724E-14  1.3076E-15 -8.2027E-16  6.1436E-13 -5.7514E-13
 -1.0740E-12  1.5377E-12 -8.0424E-15  1.3122E-14 -5.7514E-13  9.1576E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.250161 -130.694213    0.283121    0.021045   -0.962363  2453118.058673
# Heliocentric elements and errors
Epoch:              2453110.5000  =  2004/04/15
Mean Anomaly:          194.81775 +/-     0.266
Argument of Peri:      235.79940 +/-     0.265
Long of Asc Node:      159.11839 +/-     0.007
Inclination:             1.30483 +/-     0.000
Eccentricity:         0.02804072 +/-    0.0001
Semi-Major Axis:     46.07857025 +/-    0.0071
Time of Perihelion: 2505531.8002 +/-      83.6
Perihelion:          44.78649389 +/-    0.0097
Aphelion:            47.37064662 +/-    0.0100
Period (y)              312.7928 +/-      0.07
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -31.06990453 +/-    0.0011
Ecliptic Y          -35.68962843 +/-    0.0013
Ecliptic Z            1.01177363 +/-    0.0000
Ecliptic XDOT         0.00187162 +/-    0.0000
Ecliptic YDOT        -0.00160594 +/-    0.0000
Ecliptic ZDOT         0.00001898 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   47.32982391 +/-    0.0012
Geocenter to KBO     46.36566955 +/-    0.0017
# Hcoef:  6.03

The following table shows the complete astrometric record for 04HD79. 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 (04HD79) followed by the observatory code and reference code for the source of the astrometry.

2004 04  22.55793  15 08 49.91   -16 21 00.3   23.6g 04HD79    568  C~0VDp      
2004 04  24.43262  15 08 42.15   -16 20 27.1   22.5g 04HD79    568  C~0VDp      
2004 04  25.43836  15 08 37.96   -16 20 09.8   22.5g 04HD79    568  C~0VDp      
2004 04  25.46536  15 08 37.85   -16 20 09.2   22.6g 04HD79    568  C~0VDp      
2004 04  25.48800  15 08 37.76   -16 20 08.7   22.7g 04HD79    568  C~0VDp      
2004 07  08.26985  15 04 09.11   -16 02 25.9   22.2i 04HD79    568  C~0VDp      
2004 07  08.33281  15 04 08.98   -16 02 25.5   22.3i 04HD79    568  C~0VDp      
2004 07  08.39433  15 04 08.87   -16 02 25.2   22.6i 04HD79    568  C~0VDp      
2005 05  08.42633  15 12 12.81   -16 33 54.5   22.4r 04HD79    568  C~0VDp      
2005 05  08.45817  15 12 12.68   -16 33 53.7   22.4r 04HD79    568  C~0VDp      
2005 05  08.49000  15 12 12.54   -16 33 53.1   22.3r 04HD79    568  C~0VDp      
2005 05  10.48294  15 12 03.91   -16 33 18.6   22.2r 04HD79    568  C~0VDp      
2006 05  03.30623  15 17 06.49   -16 52 35.2   22.1r 04HD79    695  C~0VDp      
2006 05  03.36602  15 17 06.23   -16 52 34.1   22.4r 04HD79    695  C~0VDp      
2006 05  04.22475  15 17 02.54   -16 52 19.4   22.3r 04HD79    695  C~0VDp      
2013 06  08.00878  15 46 23.90   -18 33 13.9   22.1R 04HD79    304  C~0snk      
2013 06  08.07256  15 46 23.62   -18 33 13.2         04HD79    304  C~0snk      
2013 06  08.27956  15 46 22.74   -18 33 10.6         04HD79    304  C~0snk      
2013 06  08.99615  15 46 19.78   -18 33 01.4         04HD79    304  C~0snk      
2013 06  09.06309  15 46 19.50   -18 33 00.6         04HD79    304  C~0snk      
2013 06  09.20311  15 46 18.91   -18 32 58.8         04HD79    304  C~0snk      
2013 06  09.99858  15 46 15.63   -18 32 48.7         04HD79    304  C~0snk      
2013 06  10.06262  15 46 15.38   -18 32 47.9         04HD79    304  C~0snk      
2013 06  10.12578  15 46 15.10   -18 32 47.1         04HD79    304  C~0snk      

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     0.27       0.00    -0.64
  2   0.0051   -116.51    -0.17       1.76     0.05
  3   0.0079   -179.25    -0.05       2.11    -0.13
  4   0.0080   -180.94    -0.02       2.26     0.01
  5   0.0080   -182.32     0.04       2.39     0.14
  6   0.2100  -4196.00    -0.01     -32.35     0.11
  7   0.2102  -4197.92    -0.07     -32.49     0.07
  8   0.2104  -4199.52     0.11     -32.64     0.01
  9   1.0428   3019.72    -0.23      37.25    -0.11
 10   1.0428   3017.70    -0.15      37.52     0.17
 11   1.0429   3015.60    -0.15      37.56     0.21
 12   1.0484   2886.79     0.32      37.77     0.17
 13   2.0281   7387.80     0.07      67.00    -0.09
 14   2.0282   7383.90     0.07      67.09    -0.01
 15   2.0306   7328.87    -0.03      67.50     0.10
 16   9.1265  33498.05     0.07     281.59     0.12
 17   9.1267  33493.91    -0.04     281.38    -0.01
 18   9.1272  33480.80    -0.06     281.13    -0.09
 19   9.1292  33436.58    -0.02     280.72    -0.02
 20   9.1294  33432.41     0.02     280.61    -0.05
 21   9.1298  33423.60     0.02     280.49    -0.03
 22   9.1319  33374.63    -0.09     279.94    -0.02
 23   9.1321  33370.89     0.16     279.93     0.04
 24   9.1323  33366.72    -0.06     279.82     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.

04HD79    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        45.673    45.694    45.652
ecceobj         0.038     0.037     0.038
incobj          1.307     1.307     1.307
qmin           43.604    43.672    43.560
qmax           48.611    48.592    48.603
amean          46.006    46.027    45.985
amin           45.644    45.669    45.624
amax           46.380    46.396    46.359
emean           0.036     0.035     0.036
emin            0.023     0.022     0.023
emax            0.048     0.047     0.048
imean           1.618     1.615     1.621
imin            1.237     1.233     1.240
imax            1.945     1.942     1.949
excite_mean     0.046     0.045     0.046
fracstop        1.000     1.000     1.000
cjmean          3.124     3.124     3.123

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       194.4     194.6     194.7
kozaiamp        179.9     179.9     180.0