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: 455171 # Created Wed Dec 25 02:07:03 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 40 observations of 40 # Arc: 15.86y # First observation: 1999/07/19 # Last observation: 2015/05/28 # Chi-squared of fit: 98.22 DOF: 74 RMS: 0.28 # Min/Max residuals: -0.65 0.53 # Exact a, adot, b, bdot, g, gdot: 1.861300E-05 2.283405E-02 1.286593E-06 -7.680584E-04 2.350215E-02 2.656497E-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 -0.806139 -43.562881 0.354419 -0.013604 -0.950072 2451379.009693 # Heliocentric elements and errors Epoch: 2451378.5000 = 1999/07/19 Mean Anomaly: 55.01544 +/- 0.000 Argument of Peri: 135.05720 +/- 0.000 Long of Asc Node: 113.79043 +/- 0.000 Inclination: 2.08655 +/- 0.000 Eccentricity: 0.11909512 +/- 0.0000 Semi-Major Axis: 46.17272565 +/- 0.0000 Time of Perihelion: 2433865.5696 +/- 0.0 Perihelion: 40.67377951 +/- 0.0000 Aphelion: 51.67167179 +/- 0.0000 Period (y) 313.7520 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 31.28164115 +/- 0.0000 Ecliptic Y -30.22955022 +/- 0.0000 Ecliptic Z -0.59856733 +/- 0.0000 Ecliptic XDOT 0.00205303 +/- 0.0000 Ecliptic YDOT 0.00172363 +/- 0.0000 Ecliptic ZDOT -0.00009377 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 43.50539159 +/- 0.0000 Geocenter to KBO 42.54925012 +/- 0.0000 # Hcoef: 6.89
The following table shows the complete astrometric record for 455171. 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 (455171) followed by the observatory code and reference code for the source of the astrometry.
1999 07 19.50895 21 16 34.83 -16 40 44.4 23.6R 455171 568 Ca7328 1999 07 19.54299 21 16 34.70 -16 40 45.0 455171 568 Ca7328 1999 07 19.58434 21 16 34.50 -16 40 46.0 455171 568 Ca7328 1999 08 11.33853 21 14 52.32 -16 48 42.0 23.0R 455171 675 Ca7328 1999 08 11.35424 21 14 52.23 -16 48 42.4 23.0R 455171 675 Ca7328 2000 08 05.46359 21 20 31.51 -16 25 39.1 23.2R 455171 568 Cb7609 2000 08 05.50507 21 20 31.31 -16 25 40.1 455171 568 Cb7609 2000 08 05.54662 21 20 31.11 -16 25 40.9 455171 568 Cb7609 2000 08 06.45166 21 20 27.01 -16 26 00.2 22.8R 455171 568 Cb7609 2000 08 06.49431 21 20 26.81 -16 26 01.1 22.9R 455171 568 Cb7609 2000 08 06.53623 21 20 26.63 -16 26 02.0 455171 568 Cb7609 2001 07 20.43942 21 26 55.245 -15 58 15.56 455171 568 Cl5164 2001 07 21.46481 21 26 50.946 -15 58 37.11 455171 568 Cl5164 2001 07 25.52825 21 26 33.64 -16 00 02.3 23.3R 455171 568 Cd2765 2001 07 25.56190 21 26 33.50 -16 00 02.9 23.2R 455171 568 Cd2765 2001 07 25.59893 21 26 33.34 -16 00 03.6 22.8R 455171 568 Cd2765 2001 07 26.55223 21 26 29.21 -16 00 24.0 455171 568 Cd2765 2004 08 19.37071 21 40 01.78 -15 02 41.2 23.7g 455171 568 C~0VDL 2004 08 19.39699 21 40 01.65 -15 02 42.0 23.5g 455171 568 C~0VDL 2004 08 19.42797 21 40 01.50 -15 02 42.7 23.5g 455171 568 C~0VDL 2004 08 20.40532 21 39 57.15 -15 03 04.4 23.5g 455171 568 C~0VDL 2004 10 13.26274 21 36 48.02 -15 18 22.6 23.1i 455171 568 C~0VDL 2004 10 13.32421 21 36 47.93 -15 18 23.4 23.8i 455171 568 C~0VDL 2004 10 13.38309 21 36 47.80 -15 18 23.4 23.3i 455171 568 C~0VDL 2006 07 20.45430 21 52 11.81 -14 05 16.2 24.0r 455171 568 C~0VDL 2006 07 20.48068 21 52 11.70 -14 05 16.8 24.1r 455171 568 C~0VDL 2006 07 20.50719 21 52 11.62 -14 05 17.6 24.1r 455171 568 C~0VDL 2006 07 26.39179 21 51 48.59 -14 07 23.5 23.8r 455171 568 C~0VDL 2006 07 26.41774 21 51 48.49 -14 07 24.0 23.6r 455171 568 C~0VDL 2006 07 26.44376 21 51 48.38 -14 07 24.7 23.9r 455171 568 C~0VDL 2007 09 11.25980 21 53 25.99 -14 01 42.0 22.5r 455171 695 C~0VDL 2007 09 11.31851 21 53 25.76 -14 01 43.2 22.7r 455171 695 C~0VDL 2007 09 12.26405 21 53 21.97 -14 02 02.8 22.5r 455171 695 C~0VDL 2007 09 16.26315 21 53 06.33 -14 03 23.5 455171 675 C~0VDL 2007 09 18.27398 21 52 58.72 -14 04 02.6 455171 675 C~0VDL 2015 05 27.351097 22 36 11.62 -10 18 30.3 22.4r 455171 W84 C~1j7P 2015 05 27.372572 22 36 11.65 -10 18 30.1 23.3r 455171 W84 C~1j7P 2015 05 27.394052 22 36 11.66 -10 18 30.0 22.5r 455171 W84 C~1j7P 2015 05 27.415544 22 36 11.67 -10 18 30.0 23.0r 455171 W84 C~1j7P 2015 05 28.348963 22 36 12.52 -10 18 27.2 22.4r 455171 W84 C~1j7P
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 -0.55 0.00 -0.56
2 0.0001 0.00 -0.29 0.00 -0.47
3 0.0002 0.00 -0.60 0.00 -0.65
4 0.0625 0.00 0.53 0.00 -0.36
5 0.0625 0.00 0.29 0.00 -0.43
6 1.0485 0.00 -0.10 0.00 0.27
7 1.0486 0.00 -0.21 0.00 0.16
8 1.0487 0.00 -0.32 0.00 0.25
9 1.0512 0.00 0.06 0.00 0.49
10 1.0513 0.00 0.04 0.00 0.51
11 1.0514 0.00 0.26 0.00 0.51
12 2.0039 0.00 -0.00 0.00 0.23
13 2.0067 0.00 -0.12 0.00 -0.06
14 2.0178 0.00 0.23 0.00 0.29
15 2.0179 0.00 0.35 0.00 0.40
16 2.0180 0.00 0.39 0.00 0.48
17 2.0207 0.00 0.40 0.00 0.42
18 5.0865 0.00 0.17 0.00 -0.01
19 5.0866 0.00 0.02 0.00 -0.21
20 5.0867 0.00 -0.12 0.00 -0.21
21 5.0894 0.00 0.11 0.00 0.16
22 5.2368 0.00 -0.34 0.00 -0.13
23 5.2370 0.00 0.14 0.00 -0.41
24 5.2372 0.00 -0.07 0.00 0.08
25 7.0033 0.00 0.02 0.00 -0.13
26 7.0033 0.00 -0.10 0.00 -0.18
27 7.0034 0.00 0.24 0.00 -0.42
28 7.0195 0.00 -0.29 0.00 0.05
29 7.0196 0.00 -0.20 0.00 0.13
30 7.0197 0.00 -0.25 0.00 0.00
31 8.1472 0.00 -0.04 0.00 -0.01
32 8.1473 0.00 0.11 0.00 0.00
33 8.1499 0.00 0.03 0.00 -0.02
34 8.1609 0.00 0.11 0.00 -0.22
35 8.1664 0.00 0.23 0.00 -0.34
36 15.8545 0.00 -0.04 0.00 -0.02
37 15.8545 0.00 0.13 0.00 0.11
38 15.8546 0.00 -0.00 0.00 0.15
39 15.8546 0.00 -0.13 0.00 0.08
40 15.8572 0.00 0.01 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.
455171 quality flag:3 Type: CLASSICAL CLASSICAL CLASSICAL axisobj 46.087 46.088 46.087 ecceobj 0.118 0.118 0.118 incobj 2.087 2.087 2.087 qmin 39.963 39.966 39.991 qmax 52.453 52.444 52.428 amean 46.051 46.051 46.051 amin 45.664 45.667 45.666 amax 46.474 46.468 46.473 emean 0.115 0.115 0.115 emin 0.102 0.102 0.102 emax 0.129 0.129 0.128 imean 0.814 0.814 0.814 imin 0.310 0.310 0.310 imax 1.216 1.217 1.216 excite_mean 0.116 0.116 0.116 fracstop 1.000 1.000 1.000 cjmean 3.110 3.110 3.110 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 169.7 169.8 170.0 kozaiamp 180.0 180.0 180.0