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: 79978
# Created Fri May 2 02:36:19 2008
# Orbit generated by ELGB
# -->Covariance matrix from a Bernstein fit
# Fitting 25 observations of 25
# Arc: 8.73y
# First observation: 1999/02/15
# Last observation: 2007/11/09
# Chi-squared of fit: 33.48 DOF: 44 RMS: 0.20
# Min/Max residuals: -0.32 0.57
# Exact a, adot, b, bdot, g, gdot:
1.529164E-05 2.461173E-02 -5.159393E-06 -7.185227E-03 2.429164E-02 4.241901E-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
9.535977 127.621996 -0.321282 0.155716 -0.928287 2451224.832353
# Heliocentric elements and errors
Epoch: 2451225.5000 = 1999/02/16
Mean Anomaly: 28.14800 +/- 0.000
Argument of Peri: 100.75947 +/- 0.000
Long of Asc Node: 336.92024 +/- 0.000
Inclination: 18.78505 +/- 0.000
Eccentricity: 0.27683615 +/- 0.0000
Semi-Major Axis: 53.85857448 +/- 0.0000
Time of Perihelion: 2439937.2744 +/- 0.0
Perihelion: 38.94857418 +/- 0.0000
Aphelion: 68.76857477 +/- 0.0000
Period (y) 395.2669 +/- 0.00
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -25.60406915 +/- 0.0000
Ecliptic Y 32.70469172 +/- 0.0000
Ecliptic Z 6.81970448 +/- 0.0000
Ecliptic XDOT -0.00256857 +/- 0.0000
Ecliptic YDOT -0.00120463 +/- 0.0000
Ecliptic ZDOT -0.00071943 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 42.09113224 +/- 0.0000
Geocenter to KBO 41.16636067 +/- 0.0000
# Hcoef: 5.74
The following table shows the complete astrometric record for 79978. 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 (79978) followed by the observatory code and reference code for the source of the astrometry.
1999 02 15.33161 08 51 05.25 +27 33 42.3 21.4R 79978 568 Cb6454 1999 02 15.41713 08 51 04.79 +27 33 43.2 21.4R 79978 568 Cb6454 1999 02 19.30206 08 50 44.93 +27 34 21.8 21.4R 79978 568 Cb6454 1999 02 19.31366 08 50 44.87 +27 34 21.9 21.4R 79978 568 Cb6454 1999 03 09.43653 08 49 21.82 +27 35 59.7 21.4R 79978 568 Cb6454 1999 03 09.45288 08 49 21.75 +27 35 59.7 21.4R 79978 568 Cb6454 1999 04 11.36529 08 47 53.88 +27 32 37.8 21.5R 79978 568 Cb6454 1999 04 12.36284 08 47 52.80 +27 32 23.7 21.5R 79978 568 Cb6454 1999 05 06.29861 08 47 57.53 +27 24 55.6 21.8R 79978 568 Cb6454 1999 05 06.34551 08 47 57.60 +27 24 54.5 21.8R 79978 568 Cb6454 2000 04 06.31194 08 53 29.56 +26 47 29.4 22.1R 79978 568 Cb6454 2000 04 06.42113 08 53 29.37 +26 47 28.2 22.2R 79978 568 Cb6454 2000 05 06.23947 08 53 24.12 +26 39 13.5 22.2R 79978 568 Cb6454 2000 05 06.28541 08 53 24.18 +26 39 12.3 22.2R 79978 568 Cb6454 2000 05 06.32940 08 53 24.25 +26 39 11.5 22.3R 79978 568 Cb6454 2001 01 21.29473 09 04 11.72 +25 52 17.7 21.3R 79978 675 Cc4897 2001 01 21.37358 09 04 11.31 +25 52 19.2 21.3R 79978 675 Cc4897 2001 01 21.42040 09 04 11.07 +25 52 20.2 21.3R 79978 675 Cc4897 2004 03 22.18569 09 15 04.61 +23 40 07.7 22.8R 79978 662 Ck1971 2004 03 22.25648 09 15 04.31 +23 40 08.3 79978 662 Ck1971 2007 02 16.26017 09 32 10.68 +21 09 22.8 79978 695 Cu2667 2007 02 16.34289 09 32 10.27 +21 09 24.2 79978 695 Cu2667 2007 02 16.44940 09 32 09.73 +21 09 26.0 79978 695 Cu2667 2007 11 08.52515 09 41 15.30 +19 57 30.3 79978 695 Cy4396 2007 11 09.50167 09 41 16.58 +19 57 28.3 79978 695 Cy4396
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 0.05 0.00 -0.07 2 0.0002 0.00 0.11 0.00 0.02 3 0.0109 0.00 -0.17 0.00 -0.11 4 0.0109 0.00 -0.18 0.00 -0.12 5 0.0605 0.00 0.12 0.00 -0.03 6 0.0606 0.00 0.08 0.00 -0.05 7 0.1507 0.00 0.01 0.00 0.13 8 0.1534 0.00 0.01 0.00 -0.26 9 0.2189 0.00 -0.17 0.00 -0.27 10 0.2191 0.00 -0.08 0.00 -0.26 11 1.1389 0.00 -0.31 0.00 -0.13 12 1.1392 0.00 -0.30 0.00 -0.16 13 1.2208 0.00 0.10 0.00 0.35 14 1.2210 0.00 0.14 0.00 0.19 15 1.2211 0.00 0.35 0.00 0.39 16 1.9328 0.00 0.15 0.00 0.06 17 1.9330 0.00 0.18 0.00 0.05 18 1.9332 0.00 0.25 0.00 0.16 19 5.0975 0.00 0.57 0.00 -0.03 20 5.0977 0.00 -0.32 0.00 0.43 21 8.0025 0.00 0.15 0.00 0.03 22 8.0028 0.00 0.18 0.00 -0.01 23 8.0031 0.00 0.00 0.00 -0.05 24 8.7288 0.00 -0.20 0.00 -0.18 25 8.7315 0.00 -0.20 0.00 -0.20
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.
79978 quality flag:3 Type: 12:5EEEEEE12:5EEEEEE12:5EEEEEE axisobj 54.077 54.077 54.077 ecceobj 0.279 0.279 0.279 incobj 18.767 18.767 18.767 qmin 38.230 38.226 38.213 qmax 70.517 70.571 70.454 amean 53.972 53.972 53.972 amin 53.409 53.410 53.422 amax 54.652 54.666 54.647 emean 0.279 0.278 0.279 emin 0.266 0.266 0.267 emax 0.291 0.291 0.290 imean 19.595 19.607 19.576 imin 19.272 19.268 19.251 imax 19.889 19.899 19.890 fracstop 1.000 1.000 1.000 cjmean 2.980 2.980 2.980 libcent 0 181.4 181.8 183.0 libamp 0 133.6 133.1 132.3 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 177.6 177.5 177.6 kozaiamp 179.9 180.0 180.0