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: 26181 # Created Fri May 2 02:36:16 2008 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 50 observations of 51 # Arc: 24.01y # First observation: 1980/03/20 # Last observation: 2004/03/24 # Chi-squared of fit: 662.87 DOF: 94 RMS: 0.64 # Min/Max residuals: -1.32 1.99 # Exact a, adot, b, bdot, g, gdot: 1.662130E-05 3.232059E-02 4.460319E-06 7.112165E-03 2.631915E-02 -4.025371E-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 -5.022646 172.828359 -0.129750 -0.085484 -0.975707 2444319.049872 # Heliocentric elements and errors Epoch: 2444320.5000 = 1980/03/22 Mean Anomaly: 356.36974 +/- 0.000 Argument of Peri: 356.13449 +/- 0.000 Long of Asc Node: 194.21663 +/- 0.000 Inclination: 13.32771 +/- 0.000 Eccentricity: 0.59893774 +/- 0.0000 Semi-Major Axis: 95.43520461 +/- 0.0000 Time of Perihelion: 2447754.4708 +/- 0.0 Perihelion: 38.27545922 +/- 0.0000 Aphelion: 152.59494999 +/- 0.0000 Period (y) 932.3331 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -38.54938065 +/- 0.0000 Ecliptic Y 4.71815270 +/- 0.0000 Ecliptic Z -3.32631189 +/- 0.0000 Ecliptic XDOT -0.00007298 +/- 0.0000 Ecliptic YDOT -0.00338797 +/- 0.0000 Ecliptic ZDOT 0.00077379 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 38.97931447 +/- 0.0000 Geocenter to KBO 37.99527074 +/- 0.0000 # Hcoef: 5.09
The following table shows the complete astrometric record for 26181. 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 (26181) followed by the observatory code and reference code for the source of the astrometry.
1980 03 20.54928 11 25 43.49 -01 46 05.6 26181 260 d1550 1983 05 12.44463 11 45 14.49 -02 23 46.7 26181 260 d1550 1984 03 11.61323 11 56 42.62 -03 17 11.0 26181 260 d1550 1984 05 23.37790 11 52 27.73 -02 40 57.8 26181 260 d1550 1984 06 01.38380 11 52 20.35 -02 38 42.7 26181 260 d1550 1992 05 30.42718 12 53 30.48 -05 21 00.5 26181 260 d1550 1996 04 12.26306 13 27 29.59 -06 55 41.3 21.2V 26181 691 Ca4785 1996 04 12.28475 13 27 29.46 -06 55 41.1 21.4V 26181 691 Ca4785 1996 04 12.30634 13 27 29.37 -06 55 40.4 21.0V 26181 691 Ca4785 1996 04 19.21620 13 26 57.58 -06 52 00.5 21.5V 26181 691 Ca4785 1996 04 19.23749 13 26 57.49 -06 51 59.9 21.3V 26181 691 Ca4785 1996 04 19.25848 13 26 57.36 -06 51 59.4 21.4V 26181 691 Ca4785 1996 04 21.58310 13 26 46.86 -06 50 46.2 26181 260 b7372 1996 04 24.21425 13 26 34.90 -06 49 25.0 21.2V 26181 691 Ca4785 1996 04 24.23522 13 26 34.80 -06 49 24.6 21.2V 26181 691 Ca4785 1996 04 24.25756 13 26 34.70 -06 49 23.7 21.3V 26181 691 Ca4785 2000 04 24.25989 13 57 05.22 -07 53 15.0 20.4V 26181 691 Cb5061 2000 04 24.28089 13 57 05.16 -07 53 13.7 21.1V 26181 691 Cb5061 2000 04 24.30196 13 57 05.04 -07 53 12.7 20.2V 26181 691 Cb5061 2000 04 29.21511 13 56 42.59 -07 50 50.7 21.4V 26181 691 Cb5061 2000 04 29.23610 13 56 42.47 -07 50 49.6 21.0V 26181 691 Cb5061 2000 04 29.25693 13 56 42.37 -07 50 49.3 21.0V 26181 691 Cb5061 2000 05 10.19300 13 55 53.90 -07 45 51.1 21.3V 26181 691 Cb5061 2000 05 10.21403 13 55 53.68 -07 45 49.9 20.8V 26181 691 Cb5061 2000 05 10.23576 13 55 53.56 -07 45 48.8 20.9V 26181 691 Cb5061 2000 05 29.28866 13 54 39.80 -07 38 38.3 21.2R 26181 568 Cb5062 2000 05 29.34036 13 54 39.65 -07 38 37.0 21.3R 26181 568 Cb5062 2000 06 28.87864 13 53 30.53 -07 32 36.8 26181 950 Cb6365 2000 06 28.90325 13 53 30.51 -07 32 36.7 26181 950 Cb6365 2000 06 28.92771 13 53 30.50 -07 32 36.7 26181 950 Cb7372 2000 06 29.88299 13 53 29.58 -07 32 33.1 26181 950 Cb6365 2000 06 30.36752 13 53 29.109 -07 32 31.56 20.8R 26181 568 Cb6365 2000 07 01.38076 13 53 28.263 -07 32 28.37 20.9R 26181 568 Cb6365 2000 07 02.38144 13 53 27.522 -07 32 25.98 20.9R 26181 568 Cb6365 2001 02 15.19150 14 08 24.26 -08 37 06.9 26181 950 Cc6323 2001 02 15.26173 14 08 24.19 -08 37 05.8 26181 950 Cc6323 2001 05 22.91146 14 02 32.06 -07 55 27.0 20.3R 26181 621 Cd1177 2001 05 22.93358 14 02 31.99 -07 55 26.2 20.3R 26181 621 Cd1177 2001 05 23.92596 14 02 28.14 -07 55 04.9 20.0R 26181 621 Cd1177 2001 05 23.94808 14 02 28.09 -07 55 04.8 20.1R 26181 621 Cd1177 2002 02 17.32618 14 15 42.29 -08 49 48.0 26181 309 Cf0989 2002 02 17.39472 14 15 42.22 -08 49 46.8 26181 309 Cf0989 2002 04 08.47692 14 13 15.76 -08 29 23.0 26181 644 Ch2586 2002 04 08.48730 14 13 15.69 -08 29 23.1 26181 644 Ch2586 2002 04 08.49774 14 13 15.67 -08 29 22.4 26181 644 Ch2586 2002 04 09.27193 14 13 12.30 -08 29 00.0 26181 644 Ch2586 2002 04 09.34541 14 13 11.95 -08 28 57.6 26181 644 Ch2586 2002 04 09.42034 14 13 11.66 -08 28 55.2 26181 644 Ch2586 2003 06 21.26337 14 15 47.33 -08 15 22.3 21.7R 26181 333 Ci1737 2004 03 24.08543 14 28 54.98 -09 01 39.7 20. R 26181 621 Ck4098 2004 03 26.07757 14 28 47.92 -09 00 47.5 20. R 26181 621 Ck4098
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 -0.15 0.00 1.12 2 3.1428 0.00 0.09 0.00 -0.03 3 3.9755 0.00 0.31 0.00 -0.48 4 4.1748 0.00 -1.32 0.00 1.16 5 4.1994 0.00 -0.01 0.00 -0.04 6 12.1941 0.00 1.37 0.00 0.94 7 16.0622 0.00 0.26 0.00 -0.47 8 16.0622 0.00 -0.17 0.00 -0.96 9 16.0623 0.00 0.00 0.00 -0.95 10 16.0812 0.00 -0.28 0.00 -0.57 11 16.0813 0.00 -0.14 0.00 -0.64 12 16.0813 0.00 -0.62 0.00 -0.80 13 16.0877 0.00 0.93 0.00 -0.50 14 16.0949 0.00 -0.18 0.00 -0.30 15 16.0950 0.00 -0.24 0.00 -0.54 16 16.0950 0.00 -0.21 0.00 -0.32 17 20.0950 0.00 -0.79 0.00 0.78 18 20.0951 0.00 -0.22 0.00 1.46 19 20.0951 0.00 -0.54 0.00 1.84 20 20.1086 0.00 0.27 0.00 1.48 21 20.1087 0.00 -0.07 0.00 1.99 22 20.1087 0.00 -0.12 0.00 1.69 23 20.1387 0.00 1.02 0.00 0.89 24 20.1387 0.00 -0.90 0.00 1.55 25 20.1388 0.00 ( -1.27) 0.00 ( 2.09) 26 20.1909 0.00 -0.20 0.00 -0.23 27 20.1911 0.00 0.24 0.00 0.09 28 20.2747 0.00 -0.02 0.00 -0.22 29 20.2748 0.00 0.08 0.00 -0.22 30 20.2748 0.00 0.33 0.00 -0.32 31 20.2774 0.00 0.34 0.00 -0.29 32 20.2788 0.00 -0.05 0.00 -0.40 33 20.2815 0.00 -0.04 0.00 -0.20 34 20.2843 0.00 -0.01 0.00 -0.20 35 20.9080 0.00 0.10 0.00 -0.32 36 20.9082 0.00 0.14 0.00 -0.32 37 21.1728 0.00 0.22 0.00 -0.46 38 21.1729 0.00 0.46 0.00 -0.14 39 21.1756 0.00 -0.30 0.00 -0.11 40 21.1756 0.00 0.23 0.00 -0.48 41 21.9131 0.00 0.11 0.00 -0.28 42 21.9133 0.00 0.13 0.00 -0.18 43 22.0505 0.00 0.50 0.00 -0.23 44 22.0505 0.00 0.14 0.00 -0.64 45 22.0505 0.00 0.53 0.00 -0.24 46 22.0526 0.00 0.34 0.00 -0.48 47 22.0528 0.00 -0.01 0.00 -0.23 48 22.0530 0.00 0.64 0.00 -0.02 49 23.2518 0.00 0.48 0.00 -0.81 50 24.0097 0.00 -0.62 0.00 -0.01 51 24.0151 0.00 -0.71 0.00 -0.84
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.
26181 quality flag:3 Type: SCATEXTD SCATEXTD SCATEXTD axisobj 91.822 91.823 91.822 ecceobj 0.584 0.584 0.584 incobj 13.385 13.385 13.385 qmin 36.776 36.694 36.818 qmax 155.261 155.572 153.737 amean 93.803 93.822 93.423 amin 91.746 91.823 91.749 amax 96.606 96.685 96.018 emean 0.595 0.595 0.593 emin 0.581 0.582 0.581 emax 0.609 0.611 0.606 imean 12.683 12.601 12.653 imin 11.764 11.627 11.839 imax 13.763 13.529 13.517 fracstop 1.000 1.000 1.000 cjmean 3.090 3.089 3.090 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 178.2 172.4 185.6 kozaiamp 180.0 180.0 180.0