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: 02GU32
# Created Fri Apr 19 01:10:46 2024
# Orbit generated from Bernstein formalism
# Fitting 5 observations of 5
# Arc: 69.94d
# First observation: 2002/04/08
# Last observation: 2002/06/17
Preliminary a, adot, b, bdot, g, gdot:
-0.000001 0.024743 0.000001 -0.011176 0.027518 0.000000
# WARNING MRQMIN stopped after 13 iterations -- oscilliatory solution
# WARNING Fitting with energy constraint
# Chi-squared of fit: 2.76 DOF: 5 RMS: 0.13
# Min/Max residuals: -0.19 0.19
# Exact a, adot, b, bdot, g, gdot:
1.594182E-05 2.930976E-02 -5.524019E-06 -1.118826E-02 2.842789E-02 9.153389E-03
# Covariance matrix:
1.1700E-11 2.2029E-08 -2.0471E-12 2.1341E-10 3.8375E-09 9.9752E-09
2.2029E-08 4.4876E-05 -4.1808E-09 4.7339E-07 7.7375E-06 2.6964E-06
-2.0471E-12 -4.1808E-09 8.8564E-13 -4.6995E-11 -7.2032E-10 -1.2925E-10
2.1341E-10 4.7339E-07 -4.6995E-11 5.9583E-09 7.9717E-08 -3.9540E-07
3.8375E-09 7.7375E-06 -7.2032E-10 7.9717E-08 1.3380E-06 1.3328E-06
9.9752E-09 2.6964E-06 -1.2925E-10 -3.9540E-07 1.3328E-06 1.9326E-04
# lat0 lon0 xBary yBary zBary JD0
5.169623 -135.139381 0.445047 0.081009 -0.896036 2452372.799043
# Heliocentric elements and errors
Epoch: 2452370.5000 = 2002/04/06
Mean Anomaly: 37.04028 +/- 36.827
Argument of Peri: 96.28044 +/- 52.786
Long of Asc Node: 57.19523 +/- 2.928
Inclination: 21.33906 +/- 4.342
Eccentricity: 0.33652553 +/- 0.4849
Semi-Major Axis: 45.41679934 +/- 22.3871
Time of Perihelion: 2440867.9288 +/- 7645.8
Perihelion: 30.13288676 +/- 26.5616
Aphelion: 60.70071192 +/- 37.1505
Period (y) 306.0786 +/- 226.31
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -25.78326150 +/- 1.0105
Ecliptic Y -25.02624696 +/- 1.0055
Ecliptic Z 3.16938592 +/- 0.1290
Ecliptic XDOT 0.00129164 +/- 0.0010
Ecliptic YDOT -0.00269003 +/- 0.0010
Ecliptic ZDOT -0.00099349 +/- 0.0001
# Distances at JD0 (AU)
Heliocenter to KBO 36.07124364 +/- 1.0042
Geocenter to KBO 35.17671790 +/- 1.4313
# Hcoef: 6.93
The following table shows the complete astrometric record for 02GU32. 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 (02GU32) followed by the observatory code and reference code for the source of the astrometry.
2002 04 08.29830 14 55 46.55 -11 20 54.4 21.7R 02GU32 807 Cf5154 2002 04 09.25899 14 55 41.93 -11 20 36.0 02GU32 807 Cf5154 2002 04 09.32228 14 55 41.62 -11 20 34.7 02GU32 807 Cf5154 2002 06 17.19260 14 49 48.69 -11 03 08.3 22.7R 02GU32 695 Cf8973 2002 06 17.23960 14 49 48.49 -11 03 07.6 02GU32 695 Cf8973
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 -0.14
2 0.0026 -70.37 -0.04 -1.92 0.02
3 0.0028 -75.11 -0.04 -1.99 0.12
4 0.1914 -5349.74 0.15 -506.91 -0.19
5 0.1915 -5352.76 -0.15 -507.10 0.19
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.
02GU32 quality flag:0 Type: ERR2LARGE ERR2LARGE ERR2LARGE axisobj 0.000 0.000 0.000 ecceobj -1.000 -1.000 -1.000 incobj -1.000 -1.000 -1.000 qmin 0.000 0.000 0.000 qmax 0.000 0.000 0.000 amean 0.000 0.000 0.000 amin 0.000 0.000 0.000 amax 0.000 0.000 0.000 emean 0.000 0.000 0.000 emin 0.000 0.000 0.000 emax 0.000 0.000 0.000 imean 0.000 0.000 0.000 imin 0.000 0.000 0.000 imax 0.000 0.000 0.000 excite_mean 0.000 0.000 0.000 fracstop 0.000 0.000 0.000 cjmean 0.000 0.000 0.000 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 0.0 0.0 0.0 kozaiamp 0.0 0.0 0.0