The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory.
# Object: 120347 # Created Fri May 2 02:36:21 2008 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 33 observations of 33 # Arc: 23.99y # First observation: 1982/07/25 # Last observation: 2006/07/21 # Chi-squared of fit: 192.47 DOF: 60 RMS: 0.43 # Min/Max residuals: -1.37 0.60 # Exact a, adot, b, bdot, g, gdot: 1.315449E-05 2.284440E-02 4.519533E-06 7.977778E-03 2.473288E-02 2.740623E-03 # Covariance matrix: 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 # lat0 lon0 xBary yBary zBary JD0 14.703549 -44.373914 0.219403 0.251488 -0.957187 2445176.125866 # Heliocentric elements and errors Epoch: 2445175.5000 = 1982/07/25 Mean Anomaly: 75.34300 +/- 0.000 Argument of Peri: 309.89376 +/- 0.000 Long of Asc Node: 280.02608 +/- 0.000 Inclination: 23.90257 +/- 0.000 Eccentricity: 0.10963254 +/- 0.0000 Semi-Major Axis: 42.06759175 +/- 0.0000 Time of Perihelion: 2424318.0930 +/- 0.0 Perihelion: 37.45561472 +/- 0.0000 Aphelion: 46.67956877 +/- 0.0000 Period (y) 272.8536 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 28.50149542 +/- 0.0000 Ecliptic Y -28.20505805 +/- 0.0000 Ecliptic Z 10.26249696 +/- 0.0000 Ecliptic XDOT 0.00182364 +/- 0.0000 Ecliptic YDOT 0.00175262 +/- 0.0000 Ecliptic ZDOT 0.00093111 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 41.39050312 +/- 0.0000 Geocenter to KBO 40.43196869 +/- 0.0000 # Hcoef: 4.32
The following table shows the complete astrometric record for 120347. 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 (120347) followed by the observatory code and reference code for the source of the astrometry.
1982 07 25.62525 20 55 06.16 -02 04 27.9 120347 260 n4005 1982 08 21.48261 20 52 58.73 -02 11 52.6 120347 260 n4005 1983 06 14.78183 21 02 17.17 -01 15 34.7 120347 260 n4005 1995 07 01.41806 21 53 21.77 +08 03 21.5 120347 261 n4005 1995 07 27.35139 21 51 47.97 +08 04 23.0 120347 261 n4005 2001 08 11.33052 22 16 24.36 +12 23 45.5 20.1R 120347 644 Cn4005 2001 08 11.34134 22 16 24.34 +12 23 45.1 20.4R 120347 644 Cn4005 2001 08 11.35222 22 16 24.26 +12 23 45.0 20.3R 120347 644 Cn4005 2001 09 14.20148 22 13 52.30 +12 11 20.8 20.0R 120347 644 Cn4005 2001 09 14.22286 22 13 52.23 +12 11 20.3 20.1R 120347 644 Cn4005 2001 09 26.14548 22 13 04.24 +12 04 58.5 20.2R 120347 644 Cn4005 2001 09 30.28965 22 12 49.06 +12 02 37.8 20.3R 120347 644 Cn4005 2001 10 06.14712 22 12 29.35 +11 59 13.2 20.1R 120347 644 Cn4005 2002 07 21.48937 22 22 05.98 +13 07 29.6 20.4R 120347 644 Cn4005 2002 08 14.36968 22 20 28.45 +13 05 21.2 21.0R 120347 644 Cn4005 2002 08 14.39292 22 20 28.34 +13 05 20.6 20.3R 120347 644 Cn4005 2002 08 14.41416 22 20 28.26 +13 05 20.6 20.5R 120347 644 Cn4005 2002 08 22.32300 22 19 52.52 +13 03 13.1 20.4R 120347 644 Cn4005 2002 09 11.24833 22 18 22.52 +12 55 17.9 20.5R 120347 644 Cn4005 2002 09 11.27910 22 18 22.38 +12 55 16.8 20.2R 120347 644 Cn4005 2002 09 11.32110 22 18 22.19 +12 55 16.1 20.5R 120347 644 Cn4005 2004 09 22.14639 22 26 07.25 +14 12 46.5 20.6R 120347 675 Cn3338 2004 09 22.18819 22 26 07.07 +14 12 45.2 20.6R 120347 675 Cn3338 2004 09 23.15391 22 26 03.16 +14 12 13.5 20.5R 120347 675 Cn3338 2004 09 23.19638 22 26 02.98 +14 12 12.1 20.5R 120347 675 Cn3338 2005 08 26.09472 22 32 25.24 +15 05 49.1 20.6R 120347 213 Cn9665 2005 09 03.32908 22 31 47.72 +15 02 50.4 20.9g 120347 568 Co2231 2005 09 03.36588 22 31 47.55 +15 02 49.6 20.8g 120347 568 Co2231 2005 09 03.40260 22 31 47.37 +15 02 48.6 20.9g 120347 568 Co2231 2006 07 21.90833 22 39 08.350 +15 50 01.90 20.0R 120347 500 2006 07 21.91273 22 39 08.332 +15 50 01.95 120347 500 2006 07 21.91713 22 39 08.317 +15 50 01.97 120347 500 2006 07 21.92152 22 39 08.303 +15 50 01.99 120347 500
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 -0.14 0.00 0.25 2 0.0735 0.00 -0.13 0.00 -0.14 3 0.8875 0.00 -0.25 0.00 0.13 4 12.9330 0.00 0.15 0.00 0.16 5 13.0040 0.00 -0.19 0.00 0.35 6 19.0464 0.00 0.01 0.00 -0.27 7 19.0465 0.00 0.44 0.00 -0.54 8 19.0465 0.00 -0.03 0.00 -0.51 9 19.1392 0.00 0.09 0.00 -0.09 10 19.1392 0.00 0.43 0.00 0.06 11 19.1719 0.00 0.24 0.00 -0.21 12 19.1832 0.00 -0.19 0.00 0.09 13 19.1992 0.00 0.52 0.00 -0.53 14 19.9887 0.00 0.16 0.00 0.30 15 20.0541 0.00 0.18 0.00 0.25 16 20.0541 0.00 0.11 0.00 -0.04 17 20.0542 0.00 0.35 0.00 0.25 18 20.0758 0.00 -0.38 0.00 -0.48 19 20.1304 0.00 0.07 0.00 -0.17 20 20.1305 0.00 0.03 0.00 -0.39 21 20.1306 0.00 -0.02 0.00 0.12 22 22.1616 0.00 0.23 0.00 -0.07 23 22.1617 0.00 0.12 0.00 -0.01 24 22.1643 0.00 0.13 0.00 0.03 25 22.1645 0.00 0.04 0.00 0.02 26 23.0868 0.00 -0.49 0.00 0.34 27 23.1094 0.00 -0.11 0.00 0.52 28 23.1095 0.00 -0.11 0.00 0.60 29 23.1096 0.00 -0.26 0.00 0.49 30 23.9898 0.00 -0.26 0.00 -1.37 31 23.9898 0.00 -0.31 0.00 -1.35 32 23.9898 0.00 -0.32 0.00 -1.35 33 23.9899 0.00 -0.31 0.00 -1.36
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.
120347 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 42.228 42.228 42.228 ecceobj 0.103 0.103 0.103 incobj 23.947 23.947 23.947 qmin 36.796 36.734 36.788 qmax 47.683 47.633 47.680 amean 42.084 42.084 42.084 amin 41.753 41.750 41.747 amax 42.448 42.447 42.452 emean 0.104 0.104 0.104 emin 0.088 0.088 0.088 emax 0.123 0.123 0.123 imean 25.572 25.573 25.572 imin 25.102 25.110 25.101 imax 26.000 26.010 25.990 fracstop 1.000 1.000 1.000 cjmean 2.837 2.837 2.837 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 172.0 171.8 171.9 kozaiamp 180.0 180.0 180.0