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: 11SR250 # Created Sun Dec 22 02:09:16 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 42 observations of 42 # Arc: 3.22y # First observation: 2009/07/16 # Last observation: 2012/10/04 # Chi-squared of fit: 44.20 DOF: 78 RMS: 0.18 # Min/Max residuals: -0.48 0.49 # Exact a, adot, b, bdot, g, gdot: 4.495856E-05 4.821864E-01 5.442896E-06 7.207586E-02 1.721920E-01 1.213802E-02 # Covariance matrix: 7.3345E-13 -1.5422E-12 7.0510E-15 -1.7551E-13 3.1628E-13 -1.3463E-12 -1.5422E-12 2.4686E-11 -1.4330E-13 3.4208E-12 -2.6015E-12 2.5744E-11 7.0510E-15 -1.4330E-13 6.7221E-13 -4.1823E-13 2.1587E-14 -1.5697E-13 -1.7551E-13 3.4208E-12 -4.1823E-13 1.0882E-12 -6.9444E-13 3.8621E-12 3.1628E-13 -2.6015E-12 2.1587E-14 -6.9444E-13 5.0814E-12 -5.8599E-12 -1.3463E-12 2.5744E-11 -1.5697E-13 3.8621E-12 -5.8599E-12 2.9472E-11 # lat0 lon0 xBary yBary zBary JD0 -3.276675 -61.841876 0.075578 -0.057696 -1.007209 2455028.990916 # Heliocentric elements and errors Epoch: 2455028.5000 = 2009/07/16 Mean Anomaly: 1.24350 +/- 0.001 Argument of Peri: 338.56233 +/- 0.000 Long of Asc Node: 315.67119 +/- 0.000 Inclination: 8.89413 +/- 0.000 Eccentricity: 0.38823754 +/- 0.0000 Semi-Major Axis: 11.14378980 +/- 0.0000 Time of Perihelion: 2454981.5655 +/- 0.0 Perihelion: 6.81735225 +/- 0.0000 Aphelion: 15.47022735 +/- 0.0000 Period (y) 37.2013 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 3.14890935 +/- 0.0000 Ecliptic Y -6.04056464 +/- 0.0000 Ecliptic Z -0.33186798 +/- 0.0000 Ecliptic XDOT 0.00688568 +/- 0.0000 Ecliptic YDOT 0.00339496 +/- 0.0000 Ecliptic ZDOT 0.00113301 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 6.82012722 +/- 0.0000 Geocenter to KBO 5.80749186 +/- 0.0000 # Hcoef: 12.64
The following table shows the complete astrometric record for 11SR250. 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 (11SR250) followed by the observatory code and reference code for the source of the astrometry.
2009 07 16.49015 20 03 54.29 -23 44 19.6 20.3i 11SR250 F51 C~4qFj 2009 07 16.49989 20 03 54.07 -23 44 19.9 20.5i 11SR250 F51 C~4qFj 2010 08 05.49080 21 40 56.36 -12 42 43.8 20.9r 11SR250 F51 C~4qFj 2010 08 05.50119 21 40 56.13 -12 42 44.5 20.8r 11SR250 F51 C~4qFj 2010 08 31.41266 21 31 38.26 -13 11 31.8 20.5i 11SR250 F51 C~4qFj 2010 08 31.42370 21 31 38.02 -13 11 32.5 20.7i 11SR250 F51 C~4qFj 2010 08 31.43917 21 31 37.73 -13 11 33.6 21.1r 11SR250 F51 C~4qFj 2010 08 31.45042 21 31 37.50 -13 11 34.2 21.2r 11SR250 F51 C~4qFj 2010 09 02.19556 21 31 02.85 -13 13 20.7 21.2V 11SR250 G96 C~4qFj 2010 09 02.20185 21 31 02.74 -13 13 21.1 21.5V 11SR250 G96 C~4qFj 2010 09 02.20819 21 31 02.56 -13 13 21.2 20.8V 11SR250 G96 C~4qFj 2010 09 02.21450 21 31 02.42 -13 13 21.7 21.2V 11SR250 G96 C~4qFj 2011 06 30.60385 23 09 40.01 -01 03 14.8 21.3z 11SR250 F51 C~4qFj 2011 06 30.61582 23 09 40.01 -01 03 13.7 11SR250 F51 C~4qFj 2011 08 20.48232 23 00 37.61 -01 10 23.8 21.6r 11SR250 F51 C~4qFj 2011 08 20.49313 23 00 37.41 -01 10 24.7 21.5r 11SR250 F51 C~4qFj 2011 08 20.50460 23 00 37.16 -01 10 25.5 21.3i 11SR250 F51 C~4qFj 2011 08 20.51621 23 00 36.95 -01 10 26.2 11SR250 F51 C~4qFj 2011 08 23.46910 22 59 40.29 -01 14 08.9 21.7g 11SR250 F51 C~4qFj 2011 08 23.48016 22 59 40.05 -01 14 10.0 21.6g 11SR250 F51 C~4qFj 2011 08 23.53665 22 59 38.92 -01 14 14.2 21.2r 11SR250 F51 C~4qFj 2011 08 23.54702 22 59 38.70 -01 14 14.8 21.5r 11SR250 F51 C~4qFj 2011 08 31.47652 22 57 00.72 -01 25 22.0 21.5g 11SR250 F51 C~4qFj 2011 08 31.48773 22 57 00.48 -01 25 22.6 21.7g 11SR250 F51 C~4qFj 2011 09 04.54556 22 55 37.94 -01 31 34.1 21.0i 11SR250 F51 C~4qFj 2011 09 04.55702 22 55 37.72 -01 31 35.2 21.1i 11SR250 F51 C~4qFj 2011 09 20.33648 22 50 23.944 -01 57 09.14 22.0w 11SR250 F51 C~0a05 2011 09 20.35158 22 50 23.642 -01 57 10.71 21.8w 11SR250 F51 C~0a05 2011 09 20.36677 22 50 23.352 -01 57 12.19 21.7w 11SR250 F51 C~0a05 2011 09 20.38199 22 50 23.048 -01 57 13.71 22.0w 11SR250 F51 C~0a05 2011 09 21.515122 22 50 01.668 -01 59 04.55 20.7R 11SR250 568 C~0a05 2011 09 21.570922 22 50 00.609 -01 59 09.84 20.5R 11SR250 568 C~0a05 2011 10 28.231113 22 42 06.533 -02 45 43.11 21.2R 11SR250 568 C~0a05 2011 10 28.237070 22 42 06.500 -02 45 43.33 21.2R 11SR250 568 C~0a05 2011 10 28.238320 22 42 06.494 -02 45 43.40 21.2R 11SR250 568 C~0a05 2011 10 28.239575 22 42 06.484 -02 45 43.48 21.1R 11SR250 568 C~0a05 2011 10 28.290906 22 42 06.179 -02 45 45.69 21.2R 11SR250 568 C~0a05 2011 10 28.366672 22 42 05.728 -02 45 48.78 21.0R 11SR250 568 C~0a05 2011 10 28.367921 22 42 05.716 -02 45 48.84 21.1R 11SR250 568 C~0a05 2011 10 28.369174 22 42 05.717 -02 45 48.91 21.2R 11SR250 568 C~0a05 2012 10 04.46636 23 55 53.05 +07 42 07.8 21.4i 11SR250 F51 C~4qFj 2012 10 04.47869 23 55 52.83 +07 42 06.5 21.6i 11SR250 F51 C~4qFj
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 -0.20 0.00 0.21
2 0.0000 0.00 0.08 0.00 0.19
3 1.0541 0.00 0.43 0.00 0.04
4 1.0541 0.00 0.41 0.00 0.01
5 1.1250 0.00 -0.21 0.00 -0.01
6 1.1251 0.00 -0.39 0.00 -0.04
7 1.1251 0.00 0.06 0.00 -0.19
8 1.1251 0.00 0.09 0.00 -0.11
9 1.1299 0.00 0.24 0.00 -0.30
10 1.1299 0.00 0.49 0.00 -0.32
11 1.1300 0.00 -0.29 0.00 -0.03
12 1.1300 0.00 -0.48 0.00 -0.15
13 1.9551 0.00 -0.19 0.00 -0.04
14 1.9552 0.00 -0.12 0.00 0.28
15 2.0944 0.00 0.06 0.00 -0.00
16 2.0945 0.00 0.22 0.00 -0.12
17 2.0945 0.00 -0.18 0.00 -0.08
18 2.0945 0.00 0.06 0.00 0.06
19 2.1026 0.00 0.40 0.00 -0.03
20 2.1026 0.00 0.11 0.00 -0.27
21 2.1028 0.00 0.07 0.00 -0.06
22 2.1028 0.00 -0.13 0.00 0.15
23 2.1245 0.00 -0.28 0.00 -0.08
24 2.1246 0.00 -0.39 0.00 0.32
25 2.1357 0.00 -0.15 0.00 0.19
26 2.1357 0.00 0.12 0.00 0.16
27 2.1789 0.00 0.03 0.00 0.10
28 2.1789 0.00 -0.10 0.00 0.01
29 2.1790 0.00 -0.02 0.00 0.02
30 2.1790 0.00 -0.14 0.00 -0.01
31 2.1821 0.00 -0.06 0.00 0.02
32 2.1823 0.00 -0.05 0.00 0.17
33 2.2827 0.00 -0.01 0.00 0.03
34 2.2827 0.00 0.03 0.00 0.06
35 2.2827 0.00 0.06 0.00 0.04
36 2.2827 0.00 0.02 0.00 0.01
37 2.2828 0.00 0.05 0.00 -0.03
38 2.2830 0.00 0.02 0.00 0.05
39 2.2830 0.00 -0.05 0.00 0.05
40 2.2830 0.00 0.07 0.00 0.03
41 3.2196 0.00 -0.04 0.00 -0.22
42 3.2197 0.00 0.15 0.00 -0.13
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.
11SR250 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 10.895 10.895 10.896 ecceobj 0.374 0.374 0.374 incobj 8.874 8.874 8.874 qmin 6.663 6.546 6.635 qmax 14.970 15.683 15.677 amean 10.421 10.788 10.949 amin 9.912 10.485 10.608 amax 10.896 11.114 11.488 emean 0.351 0.379 0.340 emin 0.318 0.357 0.281 emax 0.374 0.411 0.404 imean 11.065 11.254 17.251 imin 10.226 10.230 10.222 imax 12.610 12.479 24.258 excite_mean 0.400 0.426 0.456 fracstop 0.001 0.001 0.003 cjmean 3.971 3.880 3.831 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 136.1 123.3 55.6 kozaiamp 171.1 172.8 171.7