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: 09YF7 # Created Thu May 24 01:37:51 2012 # Orbit generated from Bernstein formalism # Fitting 32 observations of 33 # Arc: 2.01y # First observation: 2009/12/19 # Last observation: 2011/12/24 Preliminary a, adot, b, bdot, g, gdot: -0.001804 0.126455 -0.001500 0.058097 0.088505 0.000000 # Chi-squared of fit: 120.48 DOF: 58 RMS: 0.34 # Min/Max residuals: -0.94 0.78 # Exact a, adot, b, bdot, g, gdot: 2.224592E-05 1.078059E-01 9.725350E-06 4.977170E-02 8.182174E-02 -6.590606E-02 # Covariance matrix: 9.6500E-14 -1.2368E-13 1.5782E-15 -2.4221E-14 6.0649E-14 -2.3353E-13 -1.2368E-13 5.7181E-13 -3.0500E-14 2.1348E-13 2.2751E-14 1.9457E-12 1.5782E-15 -3.0500E-14 8.4075E-14 -6.7545E-14 -3.4407E-14 -1.4036E-13 -2.4221E-14 2.1348E-13 -6.7545E-14 1.6360E-13 8.4266E-14 8.7341E-13 6.0649E-14 2.2751E-14 -3.4407E-14 8.4266E-14 7.6036E-13 6.1626E-13 -2.3353E-13 1.9457E-12 -1.4036E-13 8.7341E-13 6.1626E-13 7.8549E-12 # lat0 lon0 xBary yBary zBary JD0 -19.422041 62.632330 -0.412507 -0.298042 -0.845438 2455184.549536 # Heliocentric elements and errors Epoch: 2455180.5000 = 2009/12/15 Mean Anomaly: 284.48164 +/- 0.008 Argument of Peri: 89.65293 +/- 0.003 Long of Asc Node: 97.43471 +/- 0.000 Inclination: 31.03358 +/- 0.000 Eccentricity: 0.45759389 +/- 0.0000 Semi-Major Axis: 12.01331113 +/- 0.0005 Time of Perihelion: 2458370.8810 +/- 0.3 Perihelion: 6.51609331 +/- 0.0003 Aphelion: 17.51052896 +/- 0.0007 Period (y) 41.6392 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 5.34782267 +/- 0.0001 Ecliptic Y 11.21903344 +/- 0.0001 Ecliptic Z -4.06394309 +/- 0.0000 Ecliptic XDOT -0.00390196 +/- 0.0000 Ecliptic YDOT 0.00030853 +/- 0.0000 Ecliptic ZDOT 0.00230389 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 13.07599144 +/- 0.0001 Geocenter to KBO 12.22169122 +/- 0.0001 # Hcoef: 10.69
The following table shows the complete astrometric record for 09YF7. 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 (09YF7) followed by the observatory code and reference code for the source of the astrometry.
2009 12 19.04877 04 17 11.217 +01 36 30.42 22.1R 09YF7 809 C~0Ch8 2009 12 19.12669 04 17 10.096 +01 36 33.33 22.1R 09YF7 809 C~0Ch8 2009 12 19.20545 04 17 08.914 +01 36 35.31 21.6R 09YF7 809 C~0Ch8 2009 12 21.05163 04 16 42.60 +01 37 34.5 22.1R 09YF7 809 C~0Ch8 2009 12 21.05421 04 16 42.541 +01 37 34.86 21.6R 09YF7 809 C~0Ch8 2009 12 21.14172 04 16 41.35 +01 37 38.0 21.5R 09YF7 809 C~0Ch8 2009 12 21.14431 04 16 41.309 +01 37 37.81 21.7R 09YF7 809 C~0Ch8 2009 12 21.21051 04 16 40.35 +01 37 40.4 21.2R 09YF7 809 C~0Ch8 2009 12 21.21310 04 16 40.336 +01 37 40.33 21.5R 09YF7 809 C~0Ch8 2009 12 22.06238 04 16 28.378 +01 38 10.28 21.7R 09YF7 809 C~0Ch8 2009 12 22.10881 04 16 27.719 +01 38 11.97 21.5R 09YF7 809 C~0Ch8 2009 12 22.15156 04 16 27.125 +01 38 13.56 21.4R 09YF7 809 C~0Ch8 2010 01 06.04329 04 13 18.988 +01 50 35.80 21.4R 09YF7 809 C~0Ctk 2010 01 06.08561 04 13 18.577 +01 50 38.47 21.9R 09YF7 809 C~0Ctk 2010 01 06.12789 04 13 18.059 +01 50 40.95 22.3R 09YF7 809 C~0Ctk 2010 02 09.07462 04 09 39.40 +02 41 17.6 09YF7 807 C~0DxN 2010 02 10.07814 04 09 38.30 +02 43 08.2 09YF7 807 C~0DxN 2010 02 10.11659 04 09 38.20 +02 43 12.4 09YF7 807 C~0DxN 2010 12 02.31763 04 45 43.66 +05 43 36.9 22.0V 09YF7 G96 C~0PnY 2010 12 02.32418 04 45 43.59 +05 43 37.0 21.3V 09YF7 G96 C~0PnY 2010 12 02.33080 04 45 43.48 +05 43 37.2 21.7V 09YF7 G96 C~0PnY 2010 12 02.33742 04 45 43.38 +05 43 37.0 20.9V 09YF7 G96 C~0PnY 2010 12 02.36235 04 45 42.93 +05 43 37.1 21.7R 09YF7 688 C~0PnY 2010 12 02.43119 04 45 41.78 +05 43 36.9 09YF7 688 C~0PnY 2011 01 09.18286 04 36 01.56 +06 03 46.3 21.2R 09YF7 695 C~0U5K 2011 01 09.19467 04 36 01.41 +06 03 47.1 09YF7 695 C~0U5K 2011 01 09.20657 04 36 01.26 +06 03 47.8 09YF7 695 C~0U5K 2011 11 26.24157 05 16 03.93 +10 26 06.0 21.0V 09YF7 G96 C~0b3q 2011 11 26.24853 05 16 03.86 +10 26 06.2 21.2V 09YF7 G96 C~0b3q 2011 11 26.25545 05 16 03.75 +10 26 05.4 21.3V 09YF7 G96 C~0b3q 2011 11 26.26242 05 16 03.61 +10 26 06.0 21.3V 09YF7 G96 C~0b3q 2011 12 24.33896 05 07 45.18 +10 36 00.9 19.9R 09YF7 688 C~0beI 2011 12 24.38499 05 07 44.40 +10 36 02.8 09YF7 688 C~0beI
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 -0.29 0.00 -0.02 2 0.0002 -15.99 0.14 5.94 0.46 3 0.0004 -33.05 -0.34 11.12 0.13 4 0.0055 -410.12 -0.32 141.50 -0.21 5 0.0055 -410.92 -0.59 142.02 0.11 6 0.0057 -427.90 0.45 148.37 0.08 7 0.0057 -428.54 0.34 148.30 -0.18 8 0.0059 -442.21 0.30 153.48 0.16 9 0.0059 -442.42 0.61 153.45 -0.06 10 0.0083 -613.21 -0.20 215.70 0.23 11 0.0084 -622.62 -0.16 219.17 0.24 12 0.0085 -631.08 0.07 222.37 0.25 13 0.0493 -3268.42 -0.94 1469.01 0.23 14 0.0494 -3273.99 0.08 1472.77 0.03 15 0.0495 -3281.17 -0.53 1476.63 -0.06 16 0.1424 -5947.02 ( -0.48) 5066.23 ( 1.50) 17 0.1452 -5942.89 0.78 5178.09 0.06 18 0.1453 -5943.59 -0.02 5182.50 0.11 19 0.9535 28068.98 -0.50 10047.62 -0.27 20 0.9535 28067.95 0.13 10047.90 -0.29 21 0.9535 28066.34 0.20 10048.39 -0.11 22 0.9536 28064.81 0.35 10048.45 -0.35 23 0.9536 28058.09 -0.05 10049.72 -0.18 24 0.9538 28040.83 0.13 10052.50 -0.51 25 1.0572 19616.28 0.33 12769.17 -0.37 26 1.0572 19614.20 0.32 12770.36 -0.31 27 1.0572 19612.10 0.32 12771.45 -0.36 28 1.9362 59103.95 -0.47 22880.13 0.33 29 1.9362 59102.88 0.35 22880.49 0.39 30 1.9362 59100.99 0.34 22879.90 -0.50 31 1.9362 59098.89 0.13 22880.83 0.13 32 2.0131 51400.48 -0.73 24600.97 0.40 33 2.0132 51388.72 -0.18 24604.68 0.46
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.
09YF7 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 12.050 12.050 12.050 ecceobj 0.455 0.455 0.455 incobj 30.996 30.996 30.996 qmin 5.923 5.591 5.580 qmax 23.907 19.323 23.358 amean 12.886 10.856 12.824 amin 11.330 9.010 10.417 amax 15.061 12.639 14.660 emean 0.523 0.443 0.538 emin 0.455 0.322 0.421 emax 0.587 0.529 0.602 imean 28.128 27.853 27.148 imin 27.313 25.789 24.605 imax 29.443 29.779 29.657 excite_mean 0.705 0.646 0.707 fracstop 0.001 0.002 0.003 cjmean 3.334 3.752 3.339 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 125.4 177.8 198.6 kozaiamp 30.5 85.7 87.6