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: 09JF19 # Created Wed Nov 27 02:09:01 2024 # Orbit generated from Bernstein formalism # Fitting 10 observations of 10 # Arc: 10.90d # First observation: 2009/05/15 # Last observation: 2009/05/26 Preliminary a, adot, b, bdot, g, gdot: -0.000000 0.023523 -0.000001 -0.002807 0.024115 0.000000 # WARNING Fitting with energy constraint # Chi-squared of fit: 1.12 DOF: 15 RMS: 0.06 # Min/Max residuals: -0.11 0.10 # Exact a, adot, b, bdot, g, gdot: 1.448855E-05 2.189981E-02 -2.625481E-06 -3.427187E-03 2.371601E-02 7.366976E-03 # Covariance matrix: 2.8097E-12 1.3202E-09 1.0493E-13 4.7814E-10 3.9316E-10 -3.0857E-09 1.3202E-09 8.6508E-07 5.3822E-11 3.0670E-07 2.5024E-07 -4.1862E-06 1.0493E-13 5.3822E-11 6.6613E-13 -1.0609E-11 1.6508E-11 1.2642E-09 4.7814E-10 3.0670E-07 -1.0609E-11 1.1066E-07 8.8838E-08 -1.5743E-06 3.9316E-10 2.5024E-07 1.6508E-11 8.8838E-08 7.2617E-08 -1.0623E-06 -3.0857E-09 -4.1862E-06 1.2642E-09 -1.5743E-06 -1.0623E-06 2.7373E-04 # lat0 lon0 xBary yBary zBary JD0 13.576321 -176.494126 -0.782969 0.149483 -0.619149 2454966.982160 # Heliocentric elements and errors Epoch: 2454960.5000 = 2009/05/09 Mean Anomaly: 62.84909 +/- 69.601 Argument of Peri: 21.99214 +/- 18.910 Long of Asc Node: 59.81966 +/- 3.653 Inclination: 16.14288 +/- 0.678 Eccentricity: 0.33483903 +/- 0.6888 Semi-Major Axis: 44.91888264 +/- 21.6287 Time of Perihelion: 2435763.2798 +/- 16115.8 Perihelion: 29.87828767 +/- 34.1201 Aphelion: 59.95947761 +/- 42.3171 Period (y) 301.0590 +/- 217.44 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -41.49573733 +/- 0.4649 Ecliptic Y -3.33153168 +/- 0.0284 Ecliptic Z 9.89791106 +/- 0.1125 Ecliptic XDOT -0.00075829 +/- 0.0019 Ecliptic YDOT -0.00257566 +/- 0.0001 Ecliptic ZDOT -0.00018505 +/- 0.0004 # Distances at JD0 (AU) Heliocenter to KBO 42.78976470 +/- 0.4516 Geocenter to KBO 42.16560328 +/- 0.4791 # Hcoef: 8.37
The following table shows the complete astrometric record for 09JF19. 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 (09JF19) followed by the observatory code and reference code for the source of the astrometry.
2009 05 15.481394 12 34 40.301 +11 03 12.57 09JF19 568 C~0aRU 2009 05 20.270609 12 34 26.715 +11 03 09.72 24.3i 09JF19 568 C~0aRU 2009 05 20.308620 12 34 26.619 +11 03 09.59 23.7i 09JF19 568 C~0aRU 2009 05 20.342114 12 34 26.520 +11 03 09.52 24.1i 09JF19 568 C~0aRU 2009 05 20.374639 12 34 26.440 +11 03 09.47 24.5i 09JF19 568 C~0aRU 2009 05 20.412646 12 34 26.333 +11 03 09.29 24.0i 09JF19 568 C~0aRU 2009 05 25.340718 12 34 14.063 +11 02 50.62 26.2g 09JF19 568 C~0aRU 2009 05 25.388591 12 34 13.950 +11 02 50.24 25.6g 09JF19 568 C~0aRU 2009 05 26.330474 12 34 11.806 +11 02 45.05 25.7g 09JF19 568 C~0aRU 2009 05 26.378388 12 34 11.697 +11 02 44.58 25.1g 09JF19 568 C~0aRU
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 0.02 0.00 0.07
2 0.0131 -181.77 -0.11 -83.50 -0.02
3 0.0132 -183.01 0.03 -84.19 -0.01
4 0.0133 -184.31 -0.07 -84.84 -0.05
5 0.0134 -185.37 0.05 -85.37 0.03
6 0.0135 -186.74 0.05 -86.17 -0.07
7 0.0270 -344.41 0.02 -176.27 0.05
8 0.0271 -345.78 0.08 -177.29 -0.05
9 0.0297 -372.55 -0.08 -194.80 0.10
10 0.0298 -373.83 0.01 -195.88 -0.04
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.
09JF19 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