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 Sun Nov 24 02:08:33 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     22 observations of     22
# Arc:  15.03y
# First observation: 2004/04/24
#  Last observation: 2019/05/07
# Chi-squared of fit:    12.99 DOF:     38 RMS:  0.14
# Min/Max residuals:    -0.30    0.29
# Exact a, adot, b, bdot, g, gdot:
  1.538648E-05  2.242603E-02  2.320971E-06  3.359205E-03  2.370092E-02 -1.197074E-03
# Covariance matrix:
  3.1820E-13  1.1721E-14 -1.8133E-15  3.8087E-15  3.0543E-13  7.7965E-14
  1.1721E-14  4.1423E-14 -5.1070E-15  6.2425E-15  8.7859E-14  1.2685E-13
 -1.8133E-15 -5.1070E-15  1.2797E-13 -1.1481E-14 -9.7835E-15 -1.6312E-14
  3.8087E-15  6.2425E-15 -1.1481E-14  2.7850E-15  1.4244E-14  1.9995E-14
  3.0543E-13  8.7859E-14 -9.7835E-15  1.4244E-14  5.6182E-13  2.9025E-13
  7.7965E-14  1.2685E-13 -1.6312E-14  1.9995E-14  2.9025E-13  4.0633E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.214696 -129.423443    0.273855    0.020527   -0.965698  2453119.936193
# Heliocentric elements and errors
Epoch:              2453120.5000  =  2004/04/25
Mean Anomaly:          278.16902 +/-     0.074
Argument of Peri:       96.26237 +/-     0.085
Long of Asc Node:      222.33189 +/-     0.000
Inclination:             8.60273 +/-     0.000
Eccentricity:         0.05654182 +/-    0.0000
Semi-Major Axis:     43.37103693 +/-    0.0051
Time of Perihelion: 2476834.9671 +/-      25.8
Perihelion:          40.91875957 +/-    0.0050
Aphelion:            45.82331429 +/-    0.0056
Period (y)              285.6327 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -27.61644113 +/-    0.0009
Ecliptic Y          -33.15581024 +/-    0.0010
Ecliptic Z            0.89455562 +/-    0.0000
Ecliptic XDOT         0.00209116 +/-    0.0000
Ecliptic YDOT        -0.00153892 +/-    0.0000
Ecliptic ZDOT         0.00038515 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   43.15992243 +/-    0.0010
Geocenter to KBO     42.19251692 +/-    0.0013
# Hcoef:  6.90

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      
2015 06  21.10969  16 10 02.38   -17 38 46.1   23.7V 04HH79    W84  C~47v5      
2015 06  24.19795  16 09 49.21   -17 38 12.0         04HH79    W84  C~47v5      
2015 06  24.23246  16 09 49.06   -17 38 11.7         04HH79    W84  C~47v5      
2019 05  06.316290 16 36 16.67   -17 57 48.9   21.2G 04HH79    705  C~39ne      
2019 05  07.314000 16 36 12.34   -17 57 35.6   23.4G 04HH79    705  C~39ne      
2019 05  07.416400 16 36 11.86   -17 57 33.9   23.3G 04HH79    705  C~39ne      

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    -0.09       0.00     0.01
     2   0.0028      0.00     0.15       0.00    -0.14
     3   0.0028      0.00     0.06       0.00     0.02
     4   0.0029      0.00     0.11       0.00    -0.04
     5   0.2049      0.00     0.00       0.00     0.06
     6   0.2051      0.00     0.29       0.00    -0.11
     7   0.2052      0.00     0.05       0.00    -0.17
     8   1.2068      0.00    -0.20       0.00     0.17
     9   1.2122      0.00    -0.08       0.00    -0.03
    10   1.2123      0.00    -0.11       0.00     0.01
    11   2.1080      0.00    -0.08       0.00     0.12
    12   2.1081      0.00    -0.05       0.00     0.13
    13   2.1081      0.00    -0.29       0.00    -0.06
    14  11.1315      0.00     0.12       0.00     0.27
    15  11.1316      0.00     0.18       0.00    -0.03
    16  11.1317      0.00     0.04       0.00    -0.01
    17  11.1559      0.00     0.06       0.00     0.05
    18  11.1643      0.00    -0.01       0.00     0.03
    19  11.1644      0.00    -0.05       0.00    -0.05
    20  15.0305      0.00    -0.30       0.00    -0.18
    21  15.0332      0.00     0.21       0.00    -0.19
    22  15.0335      0.00    -0.11       0.00     0.14

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        43.009    43.009    43.009
ecceobj         0.060     0.060     0.060
incobj          8.642     8.642     8.642
qmin           39.943    39.950    39.957
qmax           46.807    46.837    46.855
amean          43.312    43.312    43.312
amin           42.976    42.975    42.974
amax           43.664    43.662    43.666
emean           0.060     0.060     0.060
emin            0.046     0.046     0.046
emax            0.073     0.074     0.074
imean           9.962     9.962     9.962
imin            9.339     9.340     9.341
imax           10.616    10.621    10.613
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       182.0     182.0     182.2
kozaiamp        180.0     180.0     179.9