Orbit Fit and Astrometric record for 03HO57

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: 03HO57    
# Created Fri Mar 29 01:11:32 2024
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting     15 observations of     15
# Arc:  15.94y
# First observation: 2003/04/26
#  Last observation: 2019/04/05
# Chi-squared of fit:    52.29 DOF:     24 RMS:  0.33
# Min/Max residuals:    -0.57    0.68
# Exact a, adot, b, bdot, g, gdot:
  1.738685E-05  2.721000E-02 -3.397839E-06 -1.572657E-03  2.571078E-02 -2.075320E-03
# Covariance matrix:
  4.7593E-13 -1.8816E-14  3.7826E-15 -1.8763E-15  9.6840E-13  7.1053E-14
 -1.8816E-14  2.8192E-14  1.3114E-15 -1.6125E-15  7.5609E-14  6.7720E-14
  3.7826E-15  1.3114E-15  2.3711E-13 -1.8753E-14  1.9228E-14  4.5864E-15
 -1.8763E-15 -1.6125E-15 -1.8753E-14  2.5787E-15 -1.2391E-14 -4.8089E-15
  9.6840E-13  7.5609E-14  1.9228E-14 -1.2391E-14  4.1511E-12  4.8899E-13
  7.1053E-14  6.7720E-14  4.5864E-15 -4.8089E-15  4.8899E-13  1.9964E-13
#      lat0       lon0       xBary       yBary       zBary        JD0
    1.081854 -161.855794   -0.307587    0.018101   -0.958737  2452755.848563
# Heliocentric elements and errors
Epoch:              2452756.5000  =  2003/04/27
Mean Anomaly:          339.24307 +/-     0.029
Argument of Peri:      190.83456 +/-     0.038
Long of Asc Node:       36.23980 +/-     0.000
Inclination:             3.47595 +/-     0.000
Eccentricity:         0.15693257 +/-    0.0002
Semi-Major Axis:     46.49516420 +/-    0.0181
Time of Perihelion: 2459433.3355 +/-      64.6
Perihelion:          39.19855875 +/-    0.0191
Aphelion:            53.79176965 +/-    0.0239
Period (y)              317.0442 +/-      0.19
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -37.77097419 +/-    0.0029
Ecliptic Y          -12.69715455 +/-    0.0009
Ecliptic Z            0.73424277 +/-    0.0001
Ecliptic XDOT         0.00110311 +/-    0.0000
Ecliptic YDOT        -0.00269052 +/-    0.0000
Ecliptic ZDOT        -0.00017142 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   39.85482096 +/-    0.0028
Geocenter to KBO     38.89427621 +/-    0.0031
# Hcoef:  7.98

The following table shows the complete astrometric record for 03HO57. 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 (03HO57) followed by the observatory code and reference code for the source of the astrometry.

2003 04  26.34782  13 08 35.65   -06 06 54.5   23.9R 03HO57    568  Cq9883      
2003 04  26.39267  13 08 35.43   -06 06 53.2   23.4R 03HO57    568  Cq9883      
2003 04  26.43503  13 08 35.24   -06 06 52.1   23.6R 03HO57    568  Cq9883      
2003 04  27.40207  13 08 30.99   -06 06 28.3         03HO57    568  Cq9883      
2003 05  30.31045  13 06 30.54   -05 55 13.1         03HO57    568  Cq9883      
2003 05  30.36366  13 06 30.40   -05 55 12.5         03HO57    568  Cq9883      
2003 05  30.42279  13 06 30.24   -05 55 11.9         03HO57    568  Cq9883      
2014 04  23.21831  14 13 31.02   -13 22 28.3         03HO57    W84  C~2i4D      
2014 04  24.24018  14 13 25.92   -13 22 03.2   24.9V 03HO57    W84  C~2i4D      
2014 04  26.17439  14 13 16.34   -13 21 15.9         03HO57    W84  C~2i4D      
2014 04  30.09698  14 12 56.93   -13 19 40.2   23.7V 03HO57    W84  C~2fbn      
2014 05  01.01539  14 12 52.42   -13 19 17.8         03HO57    W84  C~2fbn      
2014 05  01.08462  14 12 52.06   -13 19 16.1         03HO57    W84  C~2fbn      
2019 04  05.407030 14 46 01.752  -16 29 44.59  22.9G 03HO57    G37  C~34bY      
2019 04  05.455920 14 46 01.516  -16 29 43.63        03HO57    G37  C~34bY      

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     0.07       0.00     0.51
     2   0.0001      0.00    -0.17       0.00     0.65
     3   0.0002      0.00    -0.12       0.00     0.66
     4   0.0029      0.00     0.68       0.00    -0.49
     5   0.0930      0.00    -0.18       0.00    -0.20
     6   0.0931      0.00    -0.10       0.00    -0.34
     7   0.0933      0.00    -0.10       0.00    -0.57
     8  10.9921      0.00     0.48       0.00    -0.17
     9  10.9949      0.00    -0.15       0.00    -0.02
    10  11.0002      0.00    -0.23       0.00     0.00
    11  11.0109      0.00    -0.25       0.00    -0.18
    12  11.0135      0.00     0.03       0.00    -0.20
    13  11.0137      0.00    -0.19       0.00    -0.17
    14  15.9427      0.00     0.26       0.00     0.23
    15  15.9428      0.00    -0.07       0.00     0.31

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.

03HO57    quality flag:3

Type:      CLASSICAL CLASSICAL CLASSICAL

axisobj        46.016    46.016    46.016
ecceobj         0.150     0.150     0.150
incobj          3.488     3.488     3.488
qmin           38.592    38.602    38.594
qmax           54.512    54.522    54.561
amean          46.386    46.386    46.385
amin           45.986    45.986    45.991
amax           46.839    46.841    46.836
emean           0.151     0.151     0.151
emin            0.138     0.138     0.138
emax            0.165     0.165     0.165
imean           2.971     2.971     2.971
imin            2.399     2.399     2.399
imax            3.532     3.532     3.534
excite_mean     0.160     0.160     0.160
fracstop        1.000     1.000     1.000
cjmean          3.099     3.099     3.099

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       189.5     189.5     189.6
kozaiamp        179.9     180.0     180.0