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: 148975 # Created Sun Dec 22 02:06:58 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 59 observations of 59 # Arc: 10.44y # First observation: 2001/12/09 # Last observation: 2012/05/17 # Chi-squared of fit: 247.62 DOF: 112 RMS: 0.36 # Min/Max residuals: -0.88 1.61 # Exact a, adot, b, bdot, g, gdot: 2.564038E-05 1.009261E-01 5.139150E-06 2.222951E-02 6.550973E-02 -6.814552E-02 # 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 -0.598845 105.804880 0.463118 -0.009096 -0.862569 2452253.083543 # Heliocentric elements and errors Epoch: 2452252.5000 = 2001/12/09 Mean Anomaly: 341.44495 +/- 0.000 Argument of Peri: 88.82263 +/- 0.000 Long of Asc Node: 106.67155 +/- 0.000 Inclination: 12.66133 +/- 0.000 Eccentricity: 0.68701643 +/- 0.0000 Semi-Major Axis: 30.05061722 +/- 0.0000 Time of Perihelion: 2455353.7592 +/- 0.0 Perihelion: 9.40534948 +/- 0.0000 Aphelion: 50.69588497 +/- 0.0000 Period (y) 164.7359 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -3.94533744 +/- 0.0000 Ecliptic Y 15.64864399 +/- 0.0000 Ecliptic Z -0.15947134 +/- 0.0000 Ecliptic XDOT -0.00329414 +/- 0.0000 Ecliptic YDOT -0.00387970 +/- 0.0000 Ecliptic ZDOT 0.00095896 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 16.13937876 +/- 0.0000 Geocenter to KBO 15.26519080 +/- 0.0000 # Hcoef: 11.04
The following table shows the complete astrometric record for 148975. 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 (148975) followed by the observatory code and reference code for the source of the astrometry.
2001 12 09.58280 07 08 16.91 +21 54 31.4 23.5R 148975 568 Ce7056 2001 12 09.61794 07 08 16.53 +21 54 32.3 148975 568 Ce7056 2001 12 09.64248 07 08 16.27 +21 54 33.0 148975 568 Ce7056 2001 12 19.41257 07 06 24.82 +21 59 27.9 22.8R 148975 568 Ce7056 2001 12 19.44253 07 06 24.47 +21 59 28.8 23.2R 148975 568 Ce7056 2002 01 08.42088 07 02 11.38 +22 10 08.6 22.8R 148975 568 Ce7056 2002 01 08.43890 07 02 11.15 +22 10 09.2 148975 568 Ce7056 2002 02 15.46119 06 55 02.88 +22 28 44.2 22.5R 148975 568 Cf2430 2002 02 15.50044 06 55 02.53 +22 28 45.2 148975 568 Cf2430 2002 10 31.55116 07 39 11.45 +22 04 54.6 23.1R 148975 568 Cg5849 2002 11 01.56674 07 39 11.34 +22 05 11.5 23.1R 148975 568 Cg5849 2003 03 07.18582 07 19 17.17 +23 18 11.1 22.0R 148975 662 Ch6100 2003 03 07.23645 07 19 16.89 +23 18 12.6 148975 662 Ch6100 2004 12 14.50953 08 44 17.96 +22 24 11.3 21.7R 148975 290 Cm4049 2004 12 14.52153 08 44 17.87 +22 24 12.0 21.8R 148975 290 Cm4049 2006 03 20.91428 09 08 40.59 +23 28 00.7 148975 621 Cq6960 2006 03 22.83625 09 08 25.06 +23 28 54.6 148975 621 Cq6960 2006 03 23.83969 09 08 17.33 +23 29 20.5 21. R 148975 621 Cq6960 2006 12 15.41679 10 17 06.04 +19 24 06.3 21.1R 148975 250 S~06He 2006 12 15.42119 10 17 06.04 +19 24 06.7 148975 250 S~06He 2006 12 15.42559 10 17 06.05 +19 24 07.0 148975 250 S~06He 2006 12 15.42999 10 17 06.05 +19 24 07.3 148975 250 S~06He 2006 12 27.15529 10 16 46.40 +19 39 05.0 21.5R 148975 461 Ct1925 2006 12 28.16961 10 16 42.39 +19 40 32.9 21. R 148975 461 Ct1925 2007 12 20.20183 11 12 15.18 +16 09 19.6 22. R 148975 461 Cx4055 2007 12 21.15823 11 12 19.68 +16 10 13.6 21.5R 148975 461 Cx4055 2008 01 14.11494 11 12 21.29 +16 43 11.1 20.5R 148975 461 Cx4988 2008 03 29.96142 10 56 54.13 +19 00 08.7 148975 461 Cz0868 2008 03 30.92170 10 56 42.31 +19 01 01.2 21. R 148975 461 Cz0868 2008 03 31.91541 10 56 30.30 +19 01 53.4 21. R 148975 461 Cz0868 2008 12 24.14370 12 11 43.74 +11 29 21.7 148975 461 C~02Za 2008 12 24.16439 12 11 43.82 +11 29 21.7 21. R 148975 461 C~02Za 2009 02 28.02730 12 09 10.53 +13 15 31.5 20. R 148975 461 C~053e 2009 02 28.03612 12 09 10.39 +13 15 32.7 148975 461 C~053e 2009 04 01.84875 12 01 15.54 +14 16 00.2 20.5R 148975 461 C~066G 2009 04 01.85759 12 01 15.42 +14 16 00.7 148975 461 C~066G 2009 04 16.87195 11 57 54.09 +14 31 20.2 20.5R 148975 461 C~06cw 2009 04 16.88441 11 57 53.95 +14 31 19.9 148975 461 C~06cw 2011 03 26.38838 14 17 30.58 +00 38 23.5 20.8V 148975 G96 C~0UNb 2011 03 26.39771 14 17 30.48 +00 38 24.4 21.4V 148975 G96 C~0UNb 2011 03 26.40707 14 17 30.37 +00 38 25.0 21.0V 148975 G96 C~0UNb 2011 03 26.41644 14 17 30.26 +00 38 26.4 20.4V 148975 G96 C~0UNb 2011 04 14.34302 14 13 15.56 +01 07 51.6 21.0V 148975 G96 C~0V4W 2011 04 14.34980 14 13 15.49 +01 07 53.1 20.4V 148975 G96 C~0V4W 2011 04 14.35661 14 13 15.38 +01 07 53.4 20.9V 148975 G96 C~0V4W 2011 04 14.36346 14 13 15.24 +01 07 53.7 21.9V 148975 G96 C~0V4W 2011 04 26.25407 14 10 13.98 +01 22 55.9 20.7V 148975 G96 C~0VRr 2011 04 26.26160 14 10 13.87 +01 22 56.3 20.9V 148975 G96 C~0VRr 2011 04 26.26907 14 10 13.76 +01 22 57.0 20.8V 148975 G96 C~0VRr 2011 04 26.27662 14 10 13.62 +01 22 57.3 20.7V 148975 G96 C~0VRr 2012 03 31.41118 15 18 29.96 -05 48 21.1 21.1V 148975 691 C~0fZd 2012 03 31.42893 15 18 29.78 -05 48 19.6 21.1V 148975 691 C~0fZd 2012 03 31.44666 15 18 29.59 -05 48 18.2 20.9V 148975 691 C~0fZd 2012 04 27.53333 15 12 49.144 -05 17 44.50 20.7i 148975 F51 C~0gWG 2012 04 27.54395 15 12 48.972 -05 17 44.03 20.7i 148975 F51 C~0gWG 2012 05 17.33919 15 07 43.53 -05 02 14.5 20.7V 148975 G96 C~0gpx 2012 05 17.34435 15 07 43.46 -05 02 14.2 20.8V 148975 G96 C~0gpx 2012 05 17.34961 15 07 43.39 -05 02 14.4 21.0V 148975 G96 C~0gpx 2012 05 17.35487 15 07 43.28 -05 02 13.9 20.6V 148975 G96 C~0gpx
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 -0.28 0.00 0.08
2 0.0001 0.00 -0.22 0.00 -0.02
3 0.0002 0.00 -0.10 0.00 -0.01
4 0.0269 0.00 -0.11 0.00 0.15
5 0.0270 0.00 0.15 0.00 0.10
6 0.0817 0.00 0.18 0.00 -0.13
7 0.0817 0.00 0.29 0.00 -0.11
8 0.1858 0.00 0.65 0.00 -0.01
9 0.1859 0.00 0.36 0.00 0.06
10 0.8925 0.00 -0.43 0.00 0.17
11 0.8952 0.00 -0.41 0.00 0.26
12 1.2392 0.00 -0.22 0.00 -0.38
13 1.2393 0.00 -0.34 0.00 0.09
14 3.0142 0.00 0.26 0.00 0.03
15 3.0142 0.00 0.36 0.00 -0.03
16 4.2774 0.00 -0.03 0.00 -0.43
17 4.2827 0.00 -0.13 0.00 -0.37
18 4.2854 0.00 -0.88 0.00 -0.05
19 5.0153 0.00 0.40 0.00 -0.79
20 5.0153 0.00 0.37 0.00 -0.68
21 5.0153 0.00 0.49 0.00 -0.67
22 5.0153 0.00 0.46 0.00 -0.66
23 5.0474 0.00 0.22 0.00 0.72
24 5.0502 0.00 0.15 0.00 0.36
25 6.0277 0.00 0.85 0.00 0.23
26 6.0303 0.00 -0.56 0.00 0.70
27 6.0959 0.00 -0.05 0.00 0.00
28 6.3036 0.00 -0.60 0.00 0.77
29 6.3062 0.00 -0.47 0.00 0.28
30 6.3089 0.00 -0.00 0.00 0.12
31 7.0406 0.00 1.61 0.00 0.72
32 7.0406 0.00 -0.23 0.00 0.11
33 7.2209 0.00 0.01 0.00 -0.22
34 7.2210 0.00 -0.36 0.00 -0.16
35 7.3108 0.00 0.05 0.00 0.13
36 7.3108 0.00 0.21 0.00 -0.08
37 7.3519 0.00 -0.39 0.00 0.42
38 7.3520 0.00 -0.19 0.00 -0.39
39 9.2917 0.00 -0.09 0.00 -0.22
40 9.2918 0.00 0.07 0.00 -0.24
41 9.2918 0.00 0.08 0.00 -0.56
42 9.2918 0.00 0.10 0.00 -0.09
43 9.3436 0.00 -0.19 0.00 -0.59
44 9.3436 0.00 0.31 0.00 0.34
45 9.3437 0.00 0.22 0.00 0.06
46 9.3437 0.00 -0.31 0.00 -0.21
47 9.3762 0.00 -0.18 0.00 -0.13
48 9.3763 0.00 -0.05 0.00 -0.23
49 9.3763 0.00 0.06 0.00 -0.02
50 9.3763 0.00 -0.25 0.00 -0.22
51 10.3075 0.00 0.21 0.00 -0.07
52 10.3076 0.00 0.06 0.00 0.18
53 10.3076 0.00 -0.24 0.00 0.32
54 10.3818 0.00 0.16 0.00 0.07
55 10.3818 0.00 0.03 0.00 -0.10
56 10.4360 0.00 -0.14 0.00 0.20
57 10.4360 0.00 0.02 0.00 0.33
58 10.4360 0.00 0.20 0.00 -0.04
59 10.4361 0.00 -0.21 0.00 0.29
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.
148975 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 29.807 29.806 29.807 ecceobj 0.685 0.685 0.685 incobj 12.675 12.675 12.675 qmin 9.206 9.223 9.132 qmax 51.228 67.781 52.013 amean 29.045 31.804 28.716 amin 26.866 28.407 26.644 amax 30.258 38.648 30.681 emean 0.680 0.704 0.673 emin 0.657 0.672 0.644 emax 0.693 0.754 0.695 imean 11.123 11.790 12.550 imin 10.869 10.984 10.907 imax 11.412 12.083 14.424 excite_mean 0.707 0.733 0.708 fracstop 0.001 0.003 0.004 cjmean 2.449 2.377 2.456 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 100.4 115.2 129.3 kozaiamp 10.9 22.5 34.8