Orbit Fit and Astrometric record for 04HH79

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: 04HH79    
# Created Tue Dec 12 02:37:24 2017
# Orbit generated from Bernstein formalism
# Fitting   16 observations of   16
# Arc:  11.13y
# First observation: 2004/04/24
#  Last observation: 2015/06/12
Preliminary a, adot, b, bdot, g, gdot:
  -0.000256   0.023152  -0.000092   0.003479   0.024033   0.000000
# Chi-squared of fit:     5.06 DOF:   26 RMS:  0.10
# Min/Max residuals:    -0.16    0.22
# Exact a, adot, b, bdot, g, gdot:
  1.572856E-05  2.242527E-02  2.322749E-06  3.359136E-03  2.370075E-02 -1.200012E-03
# Covariance matrix:
  3.6422E-13 -7.7110E-14  8.3310E-15 -1.0908E-14  2.8547E-13 -2.7241E-13
 -7.7110E-14  2.3342E-13 -2.2760E-14  3.6355E-14  1.4726E-13  9.0581E-13
  8.3310E-15 -2.2760E-14  1.3611E-13 -1.8482E-14 -1.1440E-14 -9.0555E-14
 -1.0908E-14  3.6355E-14 -1.8482E-14  1.0912E-14  2.1935E-14  1.4436E-13
  2.8547E-13  1.4726E-13 -1.1440E-14  2.1935E-14  5.9184E-13  5.4556E-13
 -2.7241E-13  9.0581E-13 -9.0555E-14  1.4436E-13  5.4556E-13  3.5969E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.214696 -129.423443    0.273854    0.020527   -0.965697  2453119.936193
# Heliocentric elements and errors
Epoch:              2453110.5000  =  2004/04/15
Mean Anomaly:          278.09710 +/-     0.077
Argument of Peri:       96.31458 +/-     0.090
Long of Asc Node:      222.33202 +/-     0.000
Inclination:             8.60285 +/-     0.000
Eccentricity:         0.05666873 +/-    0.0001
Semi-Major Axis:     43.36989454 +/-    0.0052
Time of Perihelion: 2476844.8733 +/-      21.8
Perihelion:          40.91217782 +/-    0.0061
Aphelion:            45.82761125 +/-    0.0066
Period (y)              285.6214 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.61662515 +/-    0.0009
Ecliptic Y          -33.15605682 +/-    0.0010
Ecliptic Z            0.89456222 +/-    0.0000
Ecliptic XDOT         0.00209132 +/-    0.0000
Ecliptic YDOT        -0.00153861 +/-    0.0000
Ecliptic ZDOT         0.00038514 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.16019382 +/-    0.0010
Geocenter to KBO     42.19276312 +/-    0.0014
# Hcoef:  7.36

The following table shows the complete astrometric record for 04HH79. 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 (04HH79) followed by the observatory code and reference code for the source of the astrometry.

2004 04  24.43545  15 13 54.06   -16 43 24.7   23.3g 04HH79    568  C~0VDp      
2004 04  25.44121  15 13 49.56   -16 43 04.6   23.8g 04HH79    568  C~0VDp      
2004 04  25.46820  15 13 49.43   -16 43 03.9   23.2g 04HH79    568  C~0VDp      
2004 04  25.49083  15 13 49.33   -16 43 03.5   23.5g 04HH79    568  C~0VDp      
2004 07  08.27761  15 08 55.62   -16 21 53.1   23.1i 04HH79    568  C~0VDp      
2004 07  08.34060  15 08 55.50   -16 21 52.7   23.4i 04HH79    568  C~0VDp      
2004 07  08.40188  15 08 55.35   -16 21 52.2   23.5i 04HH79    568  C~0VDp      
2005 07  09.21856  15 14 14.35   -16 31 07.6         04HH79    675  C~0VDp      
2005 07  11.20728  15 14 10.16   -16 30 51.0   23.0R 04HH79    675  C~0VDp      
2005 07  11.23950  15 14 10.09   -16 30 50.7   23.3R 04HH79    675  C~0VDp      
2006 06  03.39035  15 21 41.92   -16 48 14.1         04HH79    568  C~0VDp      
2006 06  03.40632  15 21 41.85   -16 48 13.8         04HH79    568  C~0VDp      
2006 06  03.42290  15 21 41.76   -16 48 13.7         04HH79    568  C~0VDp      
2015 06  12.20358  16 10 42.46   -17 40 33.9   22.9R 04HH79    695  C~1hTc      
2015 06  12.25111  16 10 42.24   -17 40 33.6         04HH79    695  C~1hTc      
2015 06  12.30416  16 10 41.98   -17 40 32.9         04HH79    695  C~1hTc      

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    -0.16       0.00    -0.02
  2   0.0028    -67.66     0.10       2.33    -0.09
  3   0.0028    -69.64    -0.02       2.52     0.03
  4   0.0029    -71.14     0.04       2.52    -0.01
  5   0.2049  -4481.01    -0.09     100.10     0.06
  6   0.2051  -4482.78     0.22     100.02    -0.03
  7   0.2052  -4484.99     0.02      99.92    -0.15
  8   1.2068     87.05    -0.16     787.90     0.13
  9   1.2122     24.55     0.00     788.05    -0.03
 10   1.2123     23.50    -0.04     788.07    -0.01
 11   2.1080   6567.57     0.07    1461.59     0.11
 12   2.1081   6566.52     0.09    1461.62     0.14
 13   2.1081   6565.25    -0.08    1461.39    -0.11
 14  11.1315  49248.10    -0.04    7965.86     0.19
 15  11.1316  49244.77     0.09    7965.53    -0.11
 16  11.1317  49240.77    -0.05    7965.49    -0.12

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.

04HH79    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        43.012    43.027    42.997
ecceobj         0.060     0.060     0.060
incobj          8.642     8.642     8.642
qmin           39.931    39.957    39.930
qmax           46.840    46.895    46.837
amean          43.315    43.330    43.300
amin           42.984    42.999    42.967
amax           43.671    43.682    43.653
emean           0.060     0.060     0.060
emin            0.046     0.045     0.046
emax            0.073     0.074     0.074
imean           9.962     9.960     9.964
imin            9.338     9.349     9.338
imax           10.616    10.610    10.619
excite_mean     0.183     0.183     0.183
fracstop        1.000     1.000     1.000
cjmean          3.053     3.053     3.053

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       182.1     182.3     182.0
kozaiamp        180.0     180.0     179.9