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: 08JO41 # Created Wed Dec 4 02:08:57 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 37 observations of 37 # Arc: 8.05y # First observation: 2008/05/11 # Last observation: 2016/05/29 # Chi-squared of fit: 55.14 DOF: 68 RMS: 0.22 # Min/Max residuals: -0.45 0.54 # Exact a, adot, b, bdot, g, gdot: 1.643593E-05 2.464605E-02 -4.628163E-06 -5.949987E-03 2.279478E-02 -6.795769E-03 # Covariance matrix: 1.9817E-13 -7.1254E-14 1.5484E-14 7.4768E-15 9.4641E-14 -2.5228E-13 -7.1254E-14 6.7352E-14 6.9639E-15 -1.4022E-14 -9.5579E-15 3.1915E-13 1.5484E-14 6.9639E-15 7.6560E-14 -1.7020E-14 2.4121E-14 5.0325E-14 7.4768E-15 -1.4022E-14 -1.7020E-14 9.7982E-15 -4.3315E-15 -7.6744E-14 9.4641E-14 -9.5579E-15 2.4121E-14 -4.3315E-15 9.9520E-14 4.6366E-15 -2.5228E-13 3.1915E-13 5.0325E-14 -7.6744E-14 4.6366E-15 1.6946E-12 # lat0 lon0 xBary yBary zBary JD0 48.297068 -98.422040 0.514714 0.646017 -0.575623 2454597.986664 # Heliocentric elements and errors Epoch: 2454598.5000 = 2008/05/12 Mean Anomaly: 348.39877 +/- 0.003 Argument of Peri: 146.13550 +/- 0.008 Long of Asc Node: 153.11959 +/- 0.000 Inclination: 48.80184 +/- 0.000 Eccentricity: 0.54966637 +/- 0.0001 Semi-Major Axis: 88.71366691 +/- 0.0130 Time of Perihelion: 2464433.7603 +/- 64.9 Perihelion: 39.95074803 +/- 0.0080 Aphelion: 137.47658579 +/- 0.0208 Period (y) 835.5915 +/- 0.18 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X -4.90906796 +/- 0.0001 Ecliptic Y -29.65614896 +/- 0.0004 Ecliptic Z 32.75320438 +/- 0.0005 Ecliptic XDOT 0.00293606 +/- 0.0000 Ecliptic YDOT -0.00042350 +/- 0.0000 Ecliptic ZDOT -0.00108495 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 44.45646643 +/- 0.0004 Geocenter to KBO 43.86993819 +/- 0.0006 # Hcoef: 8.39
The following table shows the complete astrometric record for 08JO41. 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 (08JO41) followed by the observatory code and reference code for the source of the astrometry.
2008 05 11.48591 17 35 18.30 +25 02 17.2 24.5r 08JO41 568 C~1Q3h 2008 05 11.52755 17 35 18.12 +25 02 18.5 24.4r 08JO41 568 C~1Q3h 2008 05 11.56936 17 35 17.96 +25 02 19.8 24.8r 08JO41 568 C~1Q3h 2008 08 04.25147 17 29 13.74 +24 49 14.0 25.0r 08JO41 568 C~1Q3h 2008 08 04.25850 17 29 13.70 +24 49 13.6 25.1r 08JO41 568 C~1Q3h 2008 08 04.28746 17 29 13.63 +24 49 12.5 25.4r 08JO41 568 C~1Q3h 2008 08 04.29450 17 29 13.61 +24 49 12.4 24.9r 08JO41 568 C~1Q3h 2008 08 04.32261 17 29 13.53 +24 49 10.7 25.3r 08JO41 568 C~1Q3h 2008 08 04.32964 17 29 13.50 +24 49 10.3 24.9r 08JO41 568 C~1Q3i 2008 08 31.26042 17 28 29.62 +24 24 34.2 08JO41 568 C~1Q3i 2008 09 24.21522 17 28 48.01 +23 59 46.6 08JO41 568 C~1Q3i 2008 09 24.23258 17 28 48.01 +23 59 45.3 08JO41 568 C~1Q3i 2008 09 24.25001 17 28 48.06 +23 59 44.0 08JO41 568 C~1Q3i 2009 04 23.55931 17 42 25.64 +24 24 10.5 08JO41 568 C~1Q3i 2009 04 23.61034 17 42 25.51 +24 24 12.8 08JO41 568 C~1Q3i 2009 06 21.33075 17 38 22.65 +24 44 35.0 08JO41 695 C~1Q3i 2009 06 21.36872 17 38 22.48 +24 44 34.9 08JO41 695 C~1Q3i 2009 06 21.40805 17 38 22.32 +24 44 34.4 08JO41 695 C~1Q3i 2009 06 22.34137 17 38 17.76 +24 44 27.1 08JO41 695 C~1Q3i 2009 06 22.41964 17 38 17.36 +24 44 26.8 08JO41 695 C~1Q3i 2009 07 25.24053 17 35 54.00 +24 31 05.9 08JO41 675 C~1Q3i 2009 07 25.27260 17 35 53.84 +24 31 04.3 08JO41 675 C~1Q3i 2009 07 25.31756 17 35 53.69 +24 31 02.3 08JO41 675 C~1Q3i 2009 09 13.23458 17 34 33.88 +23 46 01.0 08JO41 568 C~1Q3i 2009 09 15.23625 17 34 35.49 +23 43 55.3 08JO41 568 C~1Q3i 2009 09 16.23424 17 34 36.45 +23 42 52.2 08JO41 568 C~1Q3i 2011 05 02.25674 17 54 25.35 +23 33 09.2 08JO41 304 C~1Q3i 2011 05 02.36577 17 54 25.01 +23 33 13.6 08JO41 304 C~1Q3i 2013 04 09.59581 18 07 33.45 +22 14 02.7 24.6R 08JO41 568 C~1Q3i 2013 05 03.53574 18 06 49.63 +22 32 22.2 08JO41 568 C~1Q3i 2013 05 12.58746 18 06 20.70 +22 37 49.6 24.2R 08JO41 568 C~1Q3i 2013 06 17.52961 18 03 42.90 +22 47 53.8 23.9R 08JO41 568 C~1Q3i 2013 07 11.44643 18 01 47.04 +22 42 50.2 24.1R 08JO41 568 C~1Q3i 2013 07 15.49576 18 01 28.68 +22 41 03.2 24.6R 08JO41 568 C~1Q3i 2016 05 29.24196 18 24 16.430 +21 02 29.64 24.8R 08JO41 G37 C~2bl8 2016 05 29.31131 18 24 16.122 +21 02 31.03 08JO41 G37 C~2bl8 2016 05 29.39571 18 24 15.751 +21 02 32.63 08JO41 G37 C~2bl8
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 0.16 0.00 0.09
2 0.0001 0.00 -0.07 0.00 0.10
3 0.0002 0.00 0.01 0.00 0.10
4 0.2321 0.00 -0.01 0.00 -0.21
5 0.2321 0.00 -0.31 0.00 -0.28
6 0.2322 0.00 -0.12 0.00 -0.01
7 0.2322 0.00 -0.12 0.00 0.23
8 0.2323 0.00 -0.11 0.00 -0.14
9 0.2323 0.00 -0.26 0.00 -0.20
10 0.3060 0.00 0.21 0.00 0.21
11 0.3716 0.00 0.31 0.00 0.04
12 0.3717 0.00 -0.17 0.00 -0.18
13 0.3717 0.00 0.09 0.00 -0.39
14 0.9502 0.00 0.06 0.00 -0.17
15 0.9504 0.00 0.09 0.00 -0.14
16 1.1111 0.00 -0.35 0.00 0.20
17 1.1112 0.00 -0.09 0.00 0.39
18 1.1114 0.00 0.42 0.00 0.18
19 1.1139 0.00 -0.07 0.00 0.17
20 1.1141 0.00 -0.29 0.00 0.54
21 1.2040 0.00 0.40 0.00 0.21
22 1.2041 0.00 -0.23 0.00 -0.13
23 1.2042 0.00 -0.01 0.00 -0.35
24 1.3409 0.00 0.12 0.00 0.28
25 1.3463 0.00 0.20 0.00 0.33
26 1.3491 0.00 0.37 0.00 -0.00
27 2.9727 0.00 -0.05 0.00 -0.45
28 2.9730 0.00 -0.21 0.00 -0.42
29 4.9120 0.00 0.00 0.00 -0.24
30 4.9775 0.00 -0.14 0.00 -0.15
31 5.0023 0.00 -0.01 0.00 -0.15
32 5.1007 0.00 -0.06 0.00 -0.06
33 5.1662 0.00 -0.15 0.00 -0.11
34 5.1773 0.00 0.04 0.00 0.22
35 8.0486 0.00 0.20 0.00 0.14
36 8.0488 0.00 0.06 0.00 0.16
37 8.0490 0.00 -0.03 0.00 0.12
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.
08JO41 quality flag:3 Type: SCATNEAR SCATNEAR SCATNEAR axisobj 86.606 86.605 86.607 ecceobj 0.540 0.540 0.540 incobj 48.820 48.820 48.820 qmin 39.288 39.289 39.287 qmax 138.143 138.273 138.145 amean 87.522 87.523 87.525 amin 86.421 86.377 86.344 amax 89.119 89.162 89.133 emean 0.538 0.538 0.538 emin 0.529 0.529 0.529 emax 0.551 0.551 0.551 imean 47.950 47.949 47.950 imin 47.380 47.380 47.380 imax 48.406 48.415 48.429 excite_mean 0.917 0.917 0.917 fracstop 1.000 1.000 1.000 cjmean 2.270 2.270 2.270 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 177.7 177.7 177.8 kozaiamp 31.7 31.8 31.8