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: 681280 # Created Sun Dec 22 02:07:53 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 77 observations of 77 # Arc: 18.05y # First observation: 2004/11/09 # Last observation: 2022/11/28 # Chi-squared of fit: 85.75 DOF: 148 RMS: 0.19 # Min/Max residuals: -0.76 0.58 # Exact a, adot, b, bdot, g, gdot: 1.741381E-05 3.406069E-02 8.131447E-06 1.510273E-02 3.147642E-02 -3.143833E-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 -0.734753 44.774325 -0.039576 -0.012616 -0.991962 2453318.898023 # Heliocentric elements and errors Epoch: 2453318.5000 = 2004/11/09 Mean Anomaly: 338.45374 +/- 0.000 Argument of Peri: 29.83458 +/- 0.000 Long of Asc Node: 46.45381 +/- 0.000 Inclination: 23.95377 +/- 0.000 Eccentricity: 0.18807345 +/- 0.0000 Semi-Major Axis: 39.40119838 +/- 0.0000 Time of Perihelion: 2458725.1972 +/- 0.0 Perihelion: 31.99087905 +/- 0.0000 Aphelion: 46.81151772 +/- 0.0000 Period (y) 247.3275 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 23.22283010 +/- 0.0000 Ecliptic Y 23.10203349 +/- 0.0000 Ecliptic Z -0.40714846 +/- 0.0000 Ecliptic XDOT -0.00226995 +/- 0.0000 Ecliptic YDOT 0.00191523 +/- 0.0000 Ecliptic ZDOT 0.00131714 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 32.75931700 +/- 0.0000 Geocenter to KBO 31.76990724 +/- 0.0000 # Hcoef: 7.47
The following table shows the complete astrometric record for 681280. 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 (681280) followed by the observatory code and reference code for the source of the astrometry.
2004 11 09.39728 02 50 08.50 +15 34 02.8 22.3g 681280 568 C74325 2004 11 09.42370 02 50 08.34 +15 34 02.3 22.2g 681280 568 C74325 2004 11 09.44968 02 50 08.16 +15 34 01.8 22.3g 681280 568 C74325 2004 11 10.31494 02 50 02.68 +15 33 45.7 22.3g 681280 568 C74325 2005 01 05.25025 02 45 26.75 +15 22 04.5 22.6i 681280 568 C~0Ur4 2005 01 05.31981 02 45 26.57 +15 22 04.4 22.6i 681280 568 C~0Ur4 2005 01 05.37482 02 45 26.43 +15 22 04.3 22.6i 681280 568 C~0Ur4 2006 10 25.41662 03 05 25.61 +18 25 33.8 22.5r 681280 568 C~0Ur4 2006 10 25.45353 03 05 25.39 +18 25 33.2 22.6r 681280 568 C~0Ur5 2006 10 25.49233 03 05 25.14 +18 25 32.6 22.3r 681280 568 C~0Ur5 2006 10 26.36930 03 05 19.73 +18 25 18.7 22.3r 681280 568 C~0Ur5 2006 10 26.40185 03 05 19.55 +18 25 18.0 22.5r 681280 568 C~0Ur5 2006 10 26.44659 03 05 19.25 +18 25 17.5 22.4r 681280 568 C~0Ur5 2006 10 26.60901 03 05 18.24 +18 25 14.8 24.3r 681280 568 C~0Ur5 2006 10 27.43893 03 05 13.07 +18 25 01.4 22.4r 681280 568 C~0Ur5 2006 10 27.49280 03 05 12.71 +18 25 00.9 22.4r 681280 568 C~0Ur5 2006 10 27.54051 03 05 12.43 +18 24 59.7 22.4r 681280 568 C~0Ur5 2007 01 15.26580 02 58 23.30 +18 07 25.1 681280 568 C~0Ur5 2007 01 15.31504 02 58 23.22 +18 07 24.9 681280 568 C~0Ur5 2007 01 15.35878 02 58 23.12 +18 07 24.9 681280 568 C~0Ur5 2007 01 16.26474 02 58 21.58 +18 07 24.3 681280 568 C~0Ur5 2007 01 16.30497 02 58 21.50 +18 07 24.2 681280 568 C~0Ur5 2007 01 16.34483 02 58 21.45 +18 07 24.7 681280 568 C~0Ur5 2007 11 08.23846 03 11 01.46 +19 44 38.9 21.5r 681280 695 C~0Ur5 2007 11 08.37108 03 11 00.57 +19 44 36.7 21.3r 681280 695 C~0Ur5 2009 08 18.40108 03 30 25.22 +22 26 43.5 681280 675 C~0Ur5 2009 08 18.43968 03 30 25.26 +22 26 44.0 681280 675 C~0Ur5 2009 08 19.45832 03 30 26.24 +22 27 02.9 681280 675 C~0Ur5 2010 10 09.42731 03 36 06.562 +23 52 22.54 22.7G 681280 F51 C~343m 2010 10 09.44338 03 36 06.489 +23 52 22.66 22.6G 681280 F51 C~343m 2010 10 09.45950 03 36 06.395 +23 52 22.37 22.7G 681280 F51 C~343m 2010 10 09.47560 03 36 06.326 +23 52 22.41 22.6G 681280 F51 C~343m 2010 11 07.47908 03 33 13.218 +23 48 55.27 22.4G 681280 F51 C~343m 2010 11 07.49261 03 33 13.138 +23 48 55.05 22.3G 681280 F51 C~343m 2010 11 07.50737 03 33 13.034 +23 48 54.78 22.4G 681280 F51 C~343m 2010 11 07.52083 03 33 12.932 +23 48 54.45 21.9G 681280 F51 C~343m 2011 10 24.54733 03 42 29.618 +25 10 07.41 22.3G 681280 F51 C~343m 2011 10 24.56259 03 42 29.543 +25 10 07.17 22.1G 681280 F51 C~343m 2011 10 24.57776 03 42 29.423 +25 10 07.22 22.5G 681280 F51 C~343m 2011 10 24.59305 03 42 29.341 +25 10 07.03 21.7G 681280 F51 C~343m 2012 10 22.54648 03 50 33.801 +26 27 44.15 22.5G 681280 F51 C~343m 2012 10 22.56102 03 50 33.697 +26 27 44.06 22.4G 681280 F51 C~343m 2012 10 22.57551 03 50 33.621 +26 27 44.06 22.6G 681280 F51 C~343m 2012 10 22.58998 03 50 33.530 +26 27 44.01 22.4G 681280 F51 C~343m 2013 12 03.29076 03 54 00.588 +27 38 37.99 22.7G 681280 F51 C~343m 2013 12 03.30490 03 54 00.545 +27 38 37.48 22.9G 681280 F51 C~343m 2013 12 03.31902 03 54 00.421 +27 38 37.29 22.4G 681280 F51 C~343m 2013 12 03.33320 03 54 00.318 +27 38 37.15 22.3G 681280 F51 C~343m 2014 11 22.48788 04 03 39.345 +28 56 21.38 21.8G 681280 F51 C~343m 2014 11 22.50024 04 03 39.252 +28 56 21.23 22.3G 681280 F51 C~343m 2014 11 22.51260 04 03 39.201 +28 56 20.99 21.5G 681280 F51 C~343m 2014 12 01.34923 04 02 35.266 +28 54 47.99 22.5G 681280 F51 C~343m 2015 01 19.33029 03 57 55.668 +28 42 45.96 22.6G 681280 F51 C~343m 2015 01 19.34248 03 57 55.634 +28 42 45.75 22.2G 681280 F51 C~343m 2015 01 19.35478 03 57 55.585 +28 42 45.71 22.4G 681280 F51 C~343m 2015 01 19.36693 03 57 55.550 +28 42 45.25 21.9G 681280 F51 C~343m 2015 01 21.28247 03 57 49.486 +28 42 19.05 22.6G 681280 F51 C~343m 2015 01 21.29500 03 57 49.435 +28 42 19.24 22.4G 681280 F51 C~343m 2015 01 21.30743 03 57 49.394 +28 42 18.78 22.4G 681280 F51 C~343m 2015 01 21.31998 03 57 49.357 +28 42 18.56 22.7G 681280 F51 C~343m 2015 01 23.33565 03 57 43.491 +28 41 51.74 22.3G 681280 F51 C~343m 2015 01 23.34820 03 57 43.449 +28 41 51.61 22.5G 681280 F51 C~343m 2015 01 23.36075 03 57 43.402 +28 41 51.51 22.6G 681280 F51 C~343m 2015 01 23.37329 03 57 43.381 +28 41 51.31 21.9G 681280 F51 C~343m 2015 09 23.52911 04 17 33.574 +30 04 08.22 22.5G 681280 F51 C~343m 2015 09 23.54005 04 17 33.567 +30 04 08.38 23.1G 681280 F51 C~343m 2015 09 23.55103 04 17 33.519 +30 04 08.70 22.4G 681280 F51 C~343m 2015 09 23.56205 04 17 33.487 +30 04 08.98 22.5G 681280 F51 C~343m 2016 12 31.37863 04 16 21.313 +31 14 02.68 22.5G 681280 F51 C~343m 2017 01 29.30394 04 14 16.145 +31 06 20.99 23.1G 681280 F51 C~343m 2020 01 31.288601 04 41 05.783 +34 29 17.63 22.8G 681280 T12 C~3iMM 2020 01 31.432410 04 41 05.301 +34 29 14.97 22.7G 681280 T12 C~3iMM 2021 01 11.272490 04 52 05.993 +35 37 48.77 22.4G 681280 G37 C~4Ty3 2021 01 11.318610 04 52 05.676 +35 37 47.08 681280 G37 C~4Ty3 2021 01 11.363120 04 52 05.451 +35 37 47.41 681280 G37 C~4Ty3 2022 11 28.394450 05 17 37.063 +37 37 35.22 22.7G 681280 G37 C~66wr 2022 11 28.444100 05 17 36.662 +37 37 35.67 681280 G37 C~66wr
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 -0.03 0.00 -0.13
2 0.0001 0.00 0.14 0.00 -0.12
3 0.0001 0.00 -0.04 0.00 -0.12
4 0.0025 0.00 -0.01 0.00 0.34
5 0.1557 0.00 0.07 0.00 -0.19
6 0.1558 0.00 0.09 0.00 -0.18
7 0.1560 0.00 0.12 0.00 -0.19
8 1.9576 0.00 -0.51 0.00 0.30
9 1.9577 0.00 -0.32 0.00 0.27
10 1.9578 0.00 -0.41 0.00 0.28
11 1.9602 0.00 -0.19 0.00 0.16
12 1.9603 0.00 0.20 0.00 -0.03
13 1.9604 0.00 -0.05 0.00 0.17
14 1.9609 0.00 0.21 0.00 0.07
15 1.9632 0.00 0.11 0.00 -0.15
16 1.9633 0.00 -0.14 0.00 0.21
17 1.9634 0.00 0.21 0.00 -0.22
18 2.1817 0.00 -0.06 0.00 0.07
19 2.1818 0.00 0.14 0.00 -0.08
20 2.1820 0.00 -0.12 0.00 -0.03
21 2.1844 0.00 0.11 0.00 -0.11
22 2.1846 0.00 -0.02 0.00 -0.19
23 2.1847 0.00 0.28 0.00 0.34
24 2.9948 0.00 0.00 0.00 0.31
25 2.9951 0.00 -0.07 0.00 0.30
26 4.7721 0.00 0.05 0.00 0.22
27 4.7722 0.00 0.08 0.00 -0.02
28 4.7750 0.00 -0.11 0.00 0.02
29 5.9138 0.00 -0.00 0.00 -0.06
30 5.9139 0.00 0.11 0.00 0.08
31 5.9139 0.00 -0.09 0.00 -0.19
32 5.9140 0.00 0.09 0.00 -0.13
33 5.9934 0.00 -0.11 0.00 -0.06
34 5.9934 0.00 0.07 0.00 -0.12
35 5.9935 0.00 0.03 0.00 -0.21
36 5.9935 0.00 -0.13 0.00 -0.37
37 6.9546 0.00 0.01 0.00 -0.04
38 6.9546 0.00 0.29 0.00 -0.20
39 6.9546 0.00 -0.11 0.00 -0.07
40 6.9547 0.00 0.07 0.00 -0.17
41 7.9511 0.00 0.17 0.00 0.03
42 7.9512 0.00 -0.08 0.00 -0.02
43 7.9512 0.00 0.08 0.00 0.01
44 7.9512 0.00 0.02 0.00 -0.00
45 9.0647 0.00 -0.44 0.00 0.24
46 9.0648 0.00 0.42 0.00 -0.09
47 9.0648 0.00 0.06 0.00 -0.09
48 9.0648 0.00 0.03 0.00 -0.04
49 10.0345 0.00 -0.07 0.00 -0.03
50 10.0345 0.00 -0.11 0.00 -0.07
51 10.0345 0.00 0.49 0.00 -0.19
52 10.0587 0.00 -0.10 0.00 -0.28
53 10.1928 0.00 -0.18 0.00 0.02
54 10.1929 0.00 -0.07 0.00 -0.02
55 10.1929 0.00 -0.17 0.00 0.12
56 10.1929 0.00 -0.07 0.00 -0.17
57 10.1982 0.00 0.09 0.00 -0.09
58 10.1982 0.00 -0.07 0.00 0.27
59 10.1982 0.00 -0.10 0.00 -0.02
60 10.1983 0.00 -0.06 0.00 -0.06
61 10.2038 0.00 0.06 0.00 -0.03
62 10.2038 0.00 -0.02 0.00 0.01
63 10.2039 0.00 -0.19 0.00 0.08
64 10.2039 0.00 0.04 0.00 0.05
65 10.8696 0.00 0.04 0.00 -0.03
66 10.8697 0.00 0.30 0.00 -0.08
67 10.8697 0.00 -0.05 0.00 0.03
68 10.8697 0.00 -0.15 0.00 0.09
69 12.1423 0.00 0.58 0.00 0.21
70 12.2215 0.00 0.05 0.00 0.21
71 15.2249 0.00 -0.03 0.00 0.06
72 15.2253 0.00 0.02 0.00 0.07
73 16.1721 0.00 0.08 0.00 0.17
74 16.1723 0.00 -0.47 0.00 -0.76
75 16.1724 0.00 0.19 0.00 0.31
76 18.0506 0.00 0.02 0.00 0.13
77 18.0508 0.00 -0.17 0.00 0.22
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.
681280 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.828 39.828 39.829 ecceobj 0.194 0.194 0.195 incobj 23.861 23.861 23.861 qmin 30.661 30.659 30.663 qmax 48.656 48.659 48.653 amean 39.455 39.455 39.455 amin 39.109 39.111 39.107 amax 39.850 39.852 39.847 emean 0.180 0.180 0.180 emin 0.129 0.129 0.129 emax 0.221 0.222 0.221 imean 23.142 23.142 23.142 imin 22.209 22.208 22.209 imax 24.184 24.185 24.184 excite_mean 0.433 0.433 0.433 fracstop 1.000 1.000 1.000 cjmean 2.833 2.833 2.833 libcent 0 179.5 179.2 179.8 libamp 0 48.7 48.8 48.9 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 185.5 185.6 185.6 kozaiamp 180.0 179.9 180.0