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: 03LF7 # Created Wed Apr 17 01:11:23 2024 # Orbit generated from Bernstein formalism # Fitting 6 observations of 6 # Arc: 37.26d # First observation: 2003/06/01 # Last observation: 2003/07/08 Preliminary a, adot, b, bdot, g, gdot: -0.000001 0.040490 -0.000000 -0.001606 0.030897 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 2.22 DOF: 7 RMS: 0.11 # Min/Max residuals: -0.17 0.19 # Exact a, adot, b, bdot, g, gdot: 1.663157E-05 3.160086E-02 -1.442191E-06 -1.444204E-03 2.946054E-02 7.845145E-03 # Covariance matrix: 4.9497E-12 6.6084E-09 8.4909E-14 -1.2376E-10 1.1574E-09 -3.4910E-08 6.6084E-09 1.0560E-05 1.3669E-10 -1.9603E-07 1.8060E-06 -7.3120E-05 8.4909E-14 1.3669E-10 5.0547E-13 -7.6153E-12 2.3317E-11 -9.7152E-10 -1.2376E-10 -1.9603E-07 -7.6153E-12 3.7429E-09 -3.3612E-08 1.3220E-06 1.1574E-09 1.8060E-06 2.3317E-11 -3.3612E-08 3.1116E-07 -1.1563E-05 -3.4910E-08 -7.3120E-05 -9.7152E-10 1.3220E-06 -1.1563E-05 8.9628E-04 # lat0 lon0 xBary yBary zBary JD0 -2.044560 -120.344054 -0.189538 -0.035624 -0.998649 2452791.621843 # Heliocentric elements and errors Epoch: 2452790.5000 = 2003/05/31 Mean Anomaly: 57.31974 +/- 48.979 Argument of Peri: 130.73148 +/- 48.224 Long of Asc Node: 22.79466 +/- 2.288 Inclination: 3.28555 +/- 0.175 Eccentricity: 0.26094512 +/- 0.9423 Semi-Major Axis: 38.09417216 +/- 16.1602 Time of Perihelion: 2439116.7397 +/- 7798.0 Perihelion: 28.15368382 +/- 37.8306 Aphelion: 48.03466050 +/- 41.2764 Period (y) 235.1235 +/- 149.62 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -17.48025843 +/- 0.3245 Ecliptic Y -30.22936122 +/- 0.5543 Ecliptic Z -1.21105210 +/- 0.0229 Ecliptic XDOT 0.00216286 +/- 0.0016 Ecliptic YDOT -0.00211343 +/- 0.0023 Ecliptic ZDOT -0.00015995 +/- 0.0001 # Distances at JD0 (AU) Heliocenter to KBO 34.94052607 +/- 0.5063 Geocenter to KBO 33.94370379 +/- 0.6427 # Hcoef: 7.85
The following table shows the complete astrometric record for 03LF7. 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 (03LF7) followed by the observatory code and reference code for the source of the astrometry.
2003 06 01.12110 15 47 57.31 -22 04 25.3 22.3R 03LF7 807 Ci2139 2003 06 02.15657 15 47 51.21 -22 04 06.9 03LF7 807 Ci2139 2003 06 02.21837 15 47 50.86 -22 04 05.7 03LF7 807 Ci2139 2003 07 07.39482 15 44 56.44 -21 54 28.6 23.6R 03LF7 568 Ci2707 2003 07 08.31777 15 44 53.07 -21 54 16.4 03LF7 568 Ci2707 2003 07 08.38144 15 44 52.84 -21 54 15.2 03LF7 568 Ci2707
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 0.0028 -86.77 -0.15 -0.43 -0.14
3 0.0030 -91.78 0.08 -0.32 -0.00
4 0.0993 -2585.41 0.06 30.61 -0.02
5 0.1018 -2633.85 -0.03 32.11 -0.17
6 0.1020 -2637.24 -0.02 32.57 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.
03LF7 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