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: 427507 # Created Fri Nov 22 02:07:04 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 52 observations of 53 # Arc: 16.13y # First observation: 2002/02/20 # Last observation: 2018/04/10 # Chi-squared of fit: 319.98 DOF: 98 RMS: 0.44 # Min/Max residuals: -1.41 1.19 # Exact a, adot, b, bdot, g, gdot: 2.602607E-05 1.304224E-01 1.076380E-05 5.391494E-02 7.427505E-02 1.921577E-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 -1.436890 153.893552 0.037469 -0.024815 -0.986129 2452325.756163 # Heliocentric elements and errors Epoch: 2452326.5000 = 2002/02/21 Mean Anomaly: 12.62384 +/- 0.000 Argument of Peri: 327.58044 +/- 0.000 Long of Asc Node: 156.96410 +/- 0.000 Inclination: 22.45727 +/- 0.000 Eccentricity: 0.37072075 +/- 0.0000 Semi-Major Axis: 22.19032379 +/- 0.0000 Time of Perihelion: 2450987.6475 +/- 0.0 Perihelion: 13.96391039 +/- 0.0000 Aphelion: 30.41673718 +/- 0.0000 Period (y) 104.5331 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -12.95446112 +/- 0.0000 Ecliptic Y 6.39557624 +/- 0.0000 Ecliptic Z -0.33745498 +/- 0.0000 Ecliptic XDOT -0.00280456 +/- 0.0000 Ecliptic YDOT -0.00398435 +/- 0.0000 Ecliptic ZDOT 0.00196919 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 14.45108181 +/- 0.0000 Geocenter to KBO 13.46345114 +/- 0.0000 # Hcoef: 10.11
The following table shows the complete astrometric record for 427507. 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 (427507) followed by the observatory code and reference code for the source of the astrometry.
2002 02 20.25542 10 21 03.37 +08 44 29.3 22.3V 427507 691 Cf2793 2002 02 20.27689 10 21 03.12 +08 44 31.1 22.6V 427507 691 Cf2793 2002 02 20.31045 10 21 02.74 +08 44 34.5 22.5V 427507 691 Cf2793 2002 02 21.39074 10 20 50.42 +08 46 20.1 22.0V 427507 291 Cf2793 2002 02 21.41321 10 20 50.17 +08 46 21.6 21.6V 427507 291 Cf2793 2002 02 21.43966 10 20 49.83 +08 46 24.7 21.3V 427507 291 Cf2793 2002 02 22.26403 10 20 40.51 +08 47 45.2 21.4V 427507 291 Cf2793 2002 02 22.28805 10 20 40.24 +08 47 48.1 21.2V 427507 291 Cf2793 2002 02 22.32667 10 20 39.98 +08 47 53.0 21.4V 427507 291 Cf2793 2002 03 05.28497 10 18 36.43 +09 05 40.8 21.8V 427507 291 Cf2793 2002 03 05.28932 10 18 36.40 +09 05 40.7 22.1V 427507 291 Cf2793 2002 03 05.29332 10 18 36.37 +09 05 42.2 22.1V 427507 291 Cf2793 2002 03 09.35543 10 17 52.18 +09 12 11.6 21.5V 427507 291 Cf2793 2002 03 09.37266 10 17 51.91 +09 12 13.5 20.9V 427507 291 Cf2793 2002 03 09.39679 10 17 51.71 +09 12 15.8 20.9V 427507 291 Cf2793 2002 03 10.21250 10 17 43.03 +09 13 33.8 20.7V 427507 291 Cf2793 2002 03 10.22776 10 17 42.84 +09 13 35.2 21.0V 427507 291 Cf2793 2002 03 10.24411 10 17 42.58 +09 13 36.1 21.3V 427507 291 Cf2793 2002 05 11.87318 10 12 23.44 +10 19 55.5 427507 950 Cf4815 2002 05 11.92100 10 12 23.54 +10 19 56.5 427507 950 Cf4815 2002 05 12.87309 10 12 25.74 +10 20 16.3 427507 950 Cf4815 2002 05 12.93650 10 12 25.88 +10 20 17.5 427507 950 Cf4815 2002 11 30.60372 10 58 16.03 +07 30 45.6 21.7R 427507 568 Cg7926 2002 12 01.58730 10 58 21.83 +07 30 43.1 427507 568 Cg7926 2002 12 01.61349 10 58 21.95 +07 30 42.9 427507 568 Cg7926 2003 03 12.32206 10 49 30.69 +09 22 15.6 22.4V 427507 291 Ch4187 2003 03 12.34556 10 49 30.45 +09 22 16.2 22.2V 427507 291 Ch4187 2003 03 12.37665 10 49 30.11 +09 22 20.2 22.0V 427507 291 Ch4187 2003 04 01.17926 10 46 13.73 +09 51 26.7 22.7V 427507 291 Ch6139 2003 04 01.20289 10 46 13.54 +09 51 27.6 21.9V 427507 291 Ch6139 2004 02 16.36322 11 24 28.11 +08 37 49.5 22.2V 427507 291 Cj8745 2004 02 16.38725 11 24 27.93 +08 37 53.4 21.0V 427507 291 Cj8745 2004 02 16.41208 11 24 27.62 +08 37 54.6 22.5V 427507 291 Cj8745 2004 04 12.26801 11 15 07.06 +10 02 04.5 22.9V 427507 291 Ck4262 2004 04 12.28844 11 15 06.85 +10 02 05.5 22.2V 427507 291 Ck4262 2004 04 12.30864 11 15 06.65 +10 02 07.2 22.6V 427507 291 Ck4262 2004 04 13.28855 11 14 59.02 +10 03 10.4 22.5V 427507 291 Ck4262 2004 04 13.30953 11 14 58.84 +10 03 12.8 22.7V 427507 291 Ck4262 2004 04 13.32990 11 14 58.64 +10 03 14.0 21.6V 427507 291 Ck4262 2004 05 26.05890 11 12 34.31 +10 25 41.0 427507 304 Ck8672 2004 05 26.10938 11 12 34.38 +10 25 40.9 427507 304 Ck8672 2007 03 18.212383 12 41 56.20 +08 28 57.9 22.4 427507 H55 Cu4522 2007 03 18.275451 12 41 55.55 +08 29 03.0 22.6 427507 H55 Cu4522 2007 03 18.319134 12 41 55.13 +08 29 07.3 22.3 427507 H55 Cu4522 2007 03 18.332122 12 41 54.99 +08 29 09.5 22.5 427507 H55 Cu4522 2014 05 28.29841 14 53 08.71 +05 41 17.3 22.5R 427507 695 C~1LJ6 2014 05 28.40676 14 53 07.80 +05 41 18.6 427507 695 C~1LJ6 2014 05 30.23427 14 52 52.86 +05 41 45.4 23.0R 427507 695 C~1LJ6 2014 05 30.36429 14 52 51.78 +05 41 47.1 427507 695 C~1LJ6 2014 05 30.40198 14 52 51.47 +05 41 47.6 427507 695 C~1LJ6 2018 04 10.36012 15 58 31.851 +02 50 50.24 23.0R 427507 G37 C~2biz 2018 04 10.41974 15 58 31.485 +02 50 54.09 427507 G37 C~2biz 2018 04 10.46478 15 58 31.216 +02 50 56.70 427507 G37 C~2biz
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 0.39 0.00 0.01
2 0.0001 0.00 0.37 0.00 -0.29
3 0.0002 0.00 0.51 0.00 -0.17
4 0.0031 0.00 0.25 0.00 -0.07
5 0.0032 0.00 0.40 0.00 -0.76
6 0.0032 0.00 -0.11 0.00 -0.24
7 0.0055 0.00 0.17 0.00 -0.36
8 0.0056 0.00 0.30 0.00 0.18
9 0.0057 0.00 ( 3.12) 0.00 ( 1.30)
10 0.0357 0.00 -0.38 0.00 -0.04
11 0.0357 0.00 -0.09 0.00 -0.56
12 0.0357 0.00 0.13 0.00 0.55
13 0.0468 0.00 0.53 0.00 0.24
14 0.0469 0.00 -0.70 0.00 0.51
15 0.0469 0.00 0.25 0.00 0.52
16 0.0492 0.00 0.18 0.00 1.04
17 0.0492 0.00 -0.18 0.00 1.00
18 0.0493 0.00 -1.41 0.00 0.34
19 0.2207 0.00 -0.03 0.00 -0.40
20 0.2209 0.00 0.06 0.00 -0.42
21 0.2235 0.00 -0.02 0.00 -0.42
22 0.2236 0.00 -0.05 0.00 -0.47
23 0.7758 0.00 -0.19 0.00 -0.50
24 0.7785 0.00 0.27 0.00 -0.48
25 0.7785 0.00 -0.10 0.00 -0.65
26 1.0543 0.00 -0.60 0.00 0.67
27 1.0543 0.00 -0.31 0.00 -0.97
28 1.0544 0.00 -0.28 0.00 0.07
29 1.1086 0.00 0.20 0.00 0.44
30 1.1087 0.00 0.52 0.00 -0.53
31 1.9880 0.00 -0.28 0.00 -0.35
32 1.9880 0.00 0.52 0.00 1.19
33 1.9881 0.00 -0.51 0.00 -0.04
34 2.1410 0.00 0.87 0.00 0.21
35 2.1411 0.00 0.21 0.00 -0.13
36 2.1411 0.00 -0.34 0.00 0.25
37 2.1438 0.00 0.17 0.00 -0.43
38 2.1439 0.00 -0.04 0.00 0.63
39 2.1439 0.00 -0.62 0.00 0.52
40 2.2609 0.00 -0.45 0.00 -0.55
41 2.2611 0.00 -0.40 0.00 -0.49
42 5.0704 0.00 0.39 0.00 0.60
43 5.0706 0.00 0.03 0.00 -0.25
44 5.0707 0.00 0.23 0.00 -0.06
45 5.0707 0.00 0.07 0.00 0.91
46 12.2657 0.00 -0.02 0.00 0.12
47 12.2660 0.00 -0.03 0.00 -0.29
48 12.2710 0.00 0.02 0.00 -0.07
49 12.2713 0.00 -0.08 0.00 -0.07
50 12.2714 0.00 -0.09 0.00 -0.05
51 16.1344 0.00 0.05 0.00 -0.14
52 16.1346 0.00 -0.07 0.00 0.01
53 16.1347 0.00 -0.04 0.00 -0.18
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.
427507 quality flag:3 Type: CENTAURR CENTAURR CENTAURR axisobj 22.063 22.063 22.063 ecceobj 0.367 0.367 0.367 incobj 22.490 22.490 22.490 qmin 13.680 13.680 13.680 qmax 30.610 30.610 30.610 amean 22.028 22.025 22.027 amin 21.846 21.708 21.726 amax 22.251 22.251 22.251 emean 0.355 0.354 0.351 emin 0.334 0.332 0.318 emax 0.382 0.382 0.382 imean 22.486 22.495 22.771 imin 21.413 21.413 21.413 imax 24.542 24.171 24.737 excite_mean 0.522 0.522 0.523 fracstop 0.021 0.021 0.026 cjmean 2.845 2.845 2.842 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 328.2 328.7 328.9 kozaiamp 8.6 11.5 11.2