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: 612241 # Created Sun Dec 22 02:07:45 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 24 observations of 24 # Arc: 16.99y # First observation: 2000/08/27 # Last observation: 2017/08/22 # Chi-squared of fit: 32.32 DOF: 42 RMS: 0.21 # Min/Max residuals: -0.45 0.74 # Exact a, adot, b, bdot, g, gdot: 1.637313E-05 3.015340E-02 -1.881024E-06 -2.639703E-03 2.816332E-02 2.689670E-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 -4.551553 -8.891626 0.297027 -0.076523 -0.959328 2451783.798303 # Heliocentric elements and errors Epoch: 2451784.5000 = 2000/08/28 Mean Anomaly: 40.28677 +/- 0.000 Argument of Peri: 172.02943 +/- 0.000 Long of Asc Node: 129.47558 +/- 0.000 Inclination: 6.71302 +/- 0.000 Eccentricity: 0.10993516 +/- 0.0000 Semi-Major Axis: 39.56333191 +/- 0.0000 Time of Perihelion: 2441612.7046 +/- 0.0 Perihelion: 35.21393075 +/- 0.0000 Aphelion: 43.91273306 +/- 0.0000 Period (y) 248.8556 +/- 0.00 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 35.88043204 +/- 0.0000 Ecliptic Y -5.90819644 +/- 0.0000 Ecliptic Z -2.81779914 +/- 0.0000 Ecliptic XDOT 0.00068318 +/- 0.0000 Ecliptic YDOT 0.00286425 +/- 0.0000 Ecliptic ZDOT -0.00027640 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 36.47257545 +/- 0.0000 Geocenter to KBO 35.50715892 +/- 0.0000 # Hcoef: 7.95
The following table shows the complete astrometric record for 612241. 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 (612241) followed by the observatory code and reference code for the source of the astrometry.
2000 08 27.29756 23 34 33.27 -07 42 23.0 23.1R 612241 807 Ci2660 2000 08 27.37107 23 34 32.92 -07 42 24.9 612241 807 Ci2660 2001 08 19.31029 23 41 47.47 -07 04 52.0 22.2R 612241 807 Cd7926 2001 08 19.39741 23 41 47.15 -07 04 54.9 612241 807 Cd7926 2001 08 20.31973 23 41 43.14 -07 05 25.6 612241 807 Cd7926 2001 08 20.40536 23 41 42.77 -07 05 28.4 612241 807 Cd7926 2001 10 20.27095 23 36 54.07 -07 37 14.9 23.1R 612241 695 Ce0366 2001 10 20.32825 23 36 53.84 -07 37 16.5 612241 695 Ce0366 2001 10 21.15929 23 36 50.55 -07 37 34.3 612241 695 Ce0366 2003 07 06.57258 23 56 37.51 -05 41 04.2 23.6R 612241 568 Ci2660 2003 07 07.57455 23 56 36.94 -05 41 17.5 612241 568 Ci2660 2014 10 02.29821 01 00 25.043 -00 17 04.26 23.5i 612241 W84 C~4yCS 2014 10 28.21009 00 58 19.250 -00 29 52.69 23.5r 612241 W84 C~4yCS 2014 11 13.13399 00 57 11.388 -00 35 43.97 23.8r 612241 W84 C~4yCS 2015 10 10.286107 01 05 49.145 +00 11 28.27 23.8r 612241 568 C~2Re8 2015 10 10.331184 01 05 48.916 +00 11 26.86 23.7r 612241 568 C~2Re8 2015 10 10.374026 01 05 48.705 +00 11 25.51 23.7r 612241 568 C~2Re8 2015 10 14.269016 01 05 29.476 +00 09 25.71 24.3g 612241 568 C~2Re8 2015 10 14.311189 01 05 29.267 +00 09 24.44 24.4g 612241 568 C~2Re8 2015 10 14.353950 01 05 29.061 +00 09 23.09 24.4g 612241 568 C~2Re8 2016 08 16.39950 01 15 22.973 +01 10 53.76 23.5i 612241 W84 C~4yCS 2016 10 29.18485 01 10 13.499 +00 34 29.41 23.7r 612241 W84 C~4yCS 2016 11 06.17658 01 09 37.336 +00 31 17.41 23.5i 612241 W84 C~4yCS 2017 08 22.34518 01 21 02.996 +01 40 23.18 23.6r 612241 W84 C~4yCS
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 0.07 0.00 0.12
2 0.0002 0.00 0.12 0.00 0.74
3 0.9774 0.00 -0.37 0.00 0.11
4 0.9777 0.00 0.52 0.00 0.08
5 0.9802 0.00 -0.16 0.00 -0.07
6 0.9804 0.00 -0.06 0.00 -0.04
7 1.1471 0.00 -0.21 0.00 -0.01
8 1.1472 0.00 -0.14 0.00 -0.34
9 1.1495 0.00 -0.02 0.00 0.08
10 2.8563 0.00 0.41 0.00 -0.45
11 2.8591 0.00 -0.17 0.00 -0.38
12 14.0972 0.00 0.04 0.00 -0.07
13 14.1681 0.00 0.12 0.00 -0.20
14 14.2117 0.00 0.21 0.00 0.13
15 15.1184 0.00 -0.03 0.00 0.08
16 15.1185 0.00 -0.08 0.00 0.08
17 15.1186 0.00 -0.02 0.00 0.06
18 15.1293 0.00 -0.09 0.00 0.09
19 15.1294 0.00 -0.06 0.00 0.10
20 15.1295 0.00 0.07 0.00 0.04
21 15.9702 0.00 0.05 0.00 -0.02
22 16.1722 0.00 -0.10 0.00 -0.08
23 16.1941 0.00 0.04 0.00 0.02
24 16.9858 0.00 -0.06 0.00 -0.03
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.
612241 quality flag:3 Type: 3:2E 3:2E 3:2E axisobj 39.642 39.642 39.642 ecceobj 0.112 0.112 0.112 incobj 6.709 6.709 6.709 qmin 34.264 34.264 34.265 qmax 45.164 45.159 45.168 amean 39.459 39.459 39.459 amin 39.057 39.057 39.057 amax 39.895 39.896 39.895 emean 0.112 0.112 0.112 emin 0.095 0.095 0.095 emax 0.133 0.133 0.133 imean 5.608 5.608 5.608 imin 4.850 4.850 4.850 imax 6.394 6.394 6.394 excite_mean 0.149 0.149 0.149 fracstop 1.000 1.000 1.000 cjmean 3.027 3.027 3.027 libcent 0 180.0 180.0 180.0 libamp 0 72.8 72.8 72.8 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 179.4 179.3 179.5 kozaiamp 180.0 180.0 180.0