Orbit Fit and Astrometric record for 04HP79

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: 04HP79    
# Created Thu Oct 19 01:37:30 2017
# Orbit generated from Bernstein formalism
# Fitting   21 observations of   21
# Arc:  10.02y
# First observation: 2004/04/26
#  Last observation: 2014/05/04
Preliminary a, adot, b, bdot, g, gdot:
  -0.001394   0.029157  -0.000046   0.000959   0.025366   0.000000
# Chi-squared of fit:    53.34 DOF:   36 RMS:  0.28
# Min/Max residuals:    -0.76    0.51
# Exact a, adot, b, bdot, g, gdot:
  1.582696E-05  2.798663E-02  3.209938E-06  9.175735E-04  2.595865E-02 -2.108669E-03
# Covariance matrix:
  1.6638E-13 -8.3226E-14  1.9219E-15 -2.2604E-15  7.4233E-15 -2.3448E-13
 -8.3226E-14  9.0716E-14 -2.2927E-15  2.8302E-15  9.0186E-15  2.9400E-13
  1.9219E-15 -2.2927E-15  1.1185E-13 -1.5755E-14  1.3840E-15 -8.0125E-15
 -2.2604E-15  2.8302E-15 -1.5755E-14  5.8632E-15  1.3727E-16  9.8030E-15
  7.4233E-15  9.0186E-15  1.3840E-15  1.3727E-16  2.4133E-13  1.9762E-14
 -2.3448E-13  2.9400E-13 -8.0125E-15  9.8030E-15  1.9762E-14  1.0181E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.284964 -152.433708   -0.157759    0.022309   -0.991874  2453121.838433
# Heliocentric elements and errors
Epoch:              2453120.5000  =  2004/04/25
Mean Anomaly:          342.62396 +/-     0.011
Argument of Peri:       59.45641 +/-     0.016
Long of Asc Node:      173.93882 +/-     0.002
Inclination:             2.24824 +/-     0.000
Eccentricity:         0.18759251 +/-    0.0001
Semi-Major Axis:     47.88903413 +/-    0.0048
Time of Perihelion: 2458963.0291 +/-       3.6
Perihelion:          38.90540993 +/-    0.0049
Aphelion:            56.87265833 +/-    0.0064
Period (y)              331.4075 +/-      0.05
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -34.95100113 +/-    0.0006
Ecliptic Y          -18.42034596 +/-    0.0003
Ecliptic Z            0.86401314 +/-    0.0000
Ecliptic XDOT         0.00156202 +/-    0.0000
Ecliptic YDOT        -0.00251968 +/-    0.0000
Ecliptic ZDOT         0.00009189 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.51744101 +/-    0.0006
Geocenter to KBO     38.52280103 +/-    0.0007
# Hcoef:  7.01

The following table shows the complete astrometric record for 04HP79. 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 (04HP79) followed by the observatory code and reference code for the source of the astrometry.

2004 04  26.33769  13 44 14.36   -09 24 28.1   22.9g 04HP79    568  C~0X5W      
2004 04  26.36260  13 44 14.23   -09 24 27.6   22.9g 04HP79    568  C~0X5W      
2004 04  26.38527  13 44 14.13   -09 24 26.8   22.7g 04HP79    568  C~0X5W      
2004 04  27.33358  13 44 09.66   -09 24 01.0   23.3g 04HP79    568  C~0X5W      
2004 06  20.28773  13 41 00.95   -09 06 43.0   21.8i 04HP79    568  C~0X5W      
2004 06  20.34052  13 41 00.86   -09 06 42.5   22.2i 04HP79    568  C~0X5W      
2004 06  20.38921  13 41 00.78   -09 06 42.2   22.7i 04HP79    568  C~0X5W      
2005 05  04.35415  13 49 48.89   -09 52 25.2   22.7r 04HP79    568  C~0X5W      
2005 05  04.38840  13 49 48.72   -09 52 24.5   23.2r 04HP79    568  C~0X5W      
2005 05  04.43239  13 49 48.52   -09 52 23.2   22.7r 04HP79    568  C~0X5W      
2005 05  05.39915  13 49 44.08   -09 51 58.8   22.1r 04HP79    568  C~0X5W      
2006 01  28.51943  14 01 06.78   -10 53 53.1         04HP79    675  C~0X5W      
2006 01  29.52256  14 01 07.19   -10 53 52.1         04HP79    675  C~0X5W      
2006 01  29.52671  14 01 07.20   -10 53 52.2         04HP79    675  C~0X5W      
2006 05  02.20792  13 56 13.40   -10 24 32.7         04HP79    695  C~0X5W      
2006 05  02.28948  13 56 13.03   -10 24 30.8         04HP79    695  C~0X5W      
2009 06  21.22649  14 11 51.84   -11 39 12.7         04HP79    695  C~0X5W      
2009 06  22.16461  14 11 49.71   -11 39 03.0         04HP79    695  C~0X5W      
2014 05  04.22485  14 47 14.97   -14 16 30.9   22.4V 04HP79    W84  C~1Axn      
2014 05  04.26010  14 47 14.79   -14 16 30.0         04HP79    W84  C~1Axn      
2014 05  04.29457  14 47 14.62   -14 16 29.1         04HP79    W84  C~1Axn      

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     0.25       0.00    -0.55
  2   0.0001     -1.98     0.17      -0.22    -0.76
  3   0.0001     -3.64     0.22      -0.00    -0.54
  4   0.0027    -74.64    -0.02       0.45    -0.32
  5   0.1504  -3055.08    -0.35     -32.17    -0.04
  6   0.1506  -3056.50    -0.34     -32.19     0.03
  7   0.1507  -3057.71    -0.24     -32.33    -0.04
  8   1.0213   5221.22     0.18     191.40     0.51
  9   1.0214   5218.62     0.12     191.17     0.29
 10   1.0215   5215.40     0.15     191.34     0.48
 11   1.0241   5145.35     0.33     190.95     0.15
 12   1.7582  15911.32    -0.27     232.18    -0.04
 13   1.7609  15916.67    -0.22     235.21     0.35
 14   1.7610  15916.85    -0.06     235.17     0.29
 15   2.0147  11223.94    -0.15     381.82     0.14
 16   2.0149  11218.15     0.23     381.69     0.06
 17   5.1523  25861.89    -0.29     916.96     0.22
 18   5.1549  25828.64     0.25     915.54     0.32
 19  10.0202  59738.14     0.02    1983.69    -0.27
 20  10.0203  59735.14    -0.01    1983.75    -0.20
 21  10.0204  59732.30     0.03    1983.86    -0.07

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.

04HP79    quality flag:3

Type:           2:1E      2:1E      2:1E

axisobj        47.259    47.273    47.245
ecceobj         0.178     0.179     0.178
incobj          2.257     2.257     2.257
qmin           37.548    37.614    37.635
qmax           58.705    58.729    58.725
amean          47.796    47.797    47.795
amin           47.245    47.242    47.245
amax           48.432    48.437    48.439
emean           0.193     0.193     0.192
emin            0.173     0.172     0.171
emax            0.213     0.214     0.214
imean           2.405     2.267     2.282
imin            1.946     1.974     2.105
imax            2.889     2.964     2.463
excite_mean     0.198     0.197     0.196
fracstop        1.000     1.000     1.000
cjmean          3.100     3.100     3.100

libcent 0       256.0     261.2     180.0
libamp  0        63.6      55.8     143.0
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       143.8      89.7     138.3
kozaiamp         88.1     180.0     179.8