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: 20SE35 # Created Sat Apr 27 01:18:43 2024 # Orbit generated by ELGB # -->Covariance matrix from a Bernstein fit # Fitting 28 observations of 28 # Arc: 10.99y # First observation: 2010/09/15 # Last observation: 2021/09/12 # Chi-squared of fit: 19.10 DOF: 50 RMS: 0.15 # Min/Max residuals: -0.40 0.31 # Exact a, adot, b, bdot, g, gdot: 1.879977E-05 3.477958E-02 2.875965E-06 4.714522E-03 3.000740E-02 -9.803695E-04 # Covariance matrix: 2.6019E-13 -7.4862E-14 7.7297E-15 -7.1595E-15 -4.7632E-14 -1.3200E-13 -7.4862E-14 5.3613E-14 -7.3387E-15 6.7925E-15 5.3983E-14 1.2503E-13 7.7297E-15 -7.3387E-15 2.0541E-13 -2.2897E-14 -6.8649E-15 -1.8264E-14 -7.1595E-15 6.7925E-15 -2.2897E-14 4.0056E-15 6.2264E-15 1.6919E-14 -4.7632E-14 5.3983E-14 -6.8649E-15 6.2264E-15 2.8730E-13 1.0895E-13 -1.3200E-13 1.2503E-13 -1.8264E-14 1.6919E-14 1.0895E-13 3.1202E-13 # lat0 lon0 xBary yBary zBary JD0 -0.370475 -6.382689 0.021110 -0.006502 -1.001085 2455454.960616 # Heliocentric elements and errors Epoch: 2455454.5000 = 2010/09/15 Mean Anomaly: 353.44600 +/- 0.004 Argument of Peri: 7.27393 +/- 0.006 Long of Asc Node: 356.23669 +/- 0.000 Inclination: 7.71259 +/- 0.000 Eccentricity: 0.19731328 +/- 0.0001 Semi-Major Axis: 42.66344537 +/- 0.0038 Time of Perihelion: 2457307.5473 +/- 13.5 Perihelion: 34.24538117 +/- 0.0039 Aphelion: 51.08150957 +/- 0.0052 Period (y) 278.6712 +/- 0.04 # Ecliptic coordinates at JD0 (AU and AU/d) Ecliptic X 34.11467936 +/- 0.0006 Ecliptic Y -3.83766744 +/- 0.0001 Ecliptic Z -0.21537016 +/- 0.0000 Ecliptic XDOT 0.00026708 +/- 0.0000 Ecliptic YDOT 0.00316958 +/- 0.0000 Ecliptic ZDOT 0.00043070 +/- 0.0000 # Distances at JD0 (AU) Heliocenter to KBO 34.33054951 +/- 0.0006 Geocenter to KBO 33.32516889 +/- 0.0006 # Hcoef: 8.50
The following table shows the complete astrometric record for 20SE35. 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 (20SE35) followed by the observatory code and reference code for the source of the astrometry.
2010 09 15.459850 23 37 08.868 -02 52 28.90 23.5G 20SE35 F51 C~55jP 2010 09 16.489934 23 37 03.358 -02 53 01.48 23.4G 20SE35 F51 C~55jP 2010 09 16.501372 23 37 03.293 -02 53 01.66 24.1G 20SE35 F51 C~55jP 2010 09 16.512881 23 37 03.215 -02 53 02.14 23.0G 20SE35 F51 C~55jP 2010 09 16.524414 23 37 03.164 -02 53 02.64 23.4G 20SE35 F51 C~55jP 2011 08 27.503003 23 45 42.994 -01 40 15.44 23.0G 20SE35 F51 C~55jP 2014 09 18.438133 00 04 32.106 +01 16 17.86 23.1G 20SE35 F51 C~55jP 2015 09 11.494093 00 12 04.610 +02 22 33.89 23.7G 20SE35 F51 C~55jP 2015 10 13.394119 00 09 15.680 +02 05 48.03 23.9G 20SE35 F51 C~55jP 2015 11 02.335237 00 07 43.651 +01 56 29.04 23.0G 20SE35 F51 C~55jP 2016 11 01.347699 00 14 37.147 +02 58 44.25 23.6G 20SE35 F51 C~55jP 2017 09 15.489206 00 25 32.008 +04 24 50.35 23.7G 20SE35 F51 C~55jP 2018 08 18.574212 00 34 34.101 +05 37 56.20 24.2G 20SE35 F51 C~55jP 2019 09 26.465428 00 38 31.621 +06 23 03.62 23.7G 20SE35 F51 C~55jP 2019 09 27.441563 00 38 26.396 +06 22 33.88 23.7G 20SE35 F51 C~55jP 2020 09 14.406698 00 46 30.058 +07 29 42.94 24.2G 20SE35 F51 C~55jP 2020 09 21.232180 00 45 55.020 +07 26 30.56 23.4G 20SE35 G37 C~4OT5 2020 09 21.293440 00 45 54.705 +07 26 28.69 20SE35 G37 C~4OT5 2020 09 21.369940 00 45 54.292 +07 26 26.53 20SE35 G37 C~4OT5 2020 10 20.120690 00 43 20.033 +07 11 30.99 23.6G 20SE35 G37 C~4OT5 2020 10 20.168850 00 43 19.777 +07 11 29.59 20SE35 G37 C~4OT5 2020 11 14.083930 00 41 25.070 +06 59 37.91 24.2G 20SE35 G37 C~4OT5 2020 11 14.140490 00 41 24.852 +06 59 36.18 20SE35 G37 C~4OT5 2021 01 11.104050 00 40 28.987 +06 52 17.79 23.9G 20SE35 G37 C~4USK 2021 01 11.180130 00 40 29.141 +06 52 18.72 20SE35 G37 C~4USK 2021 09 12.356550 00 53 41.928 +08 31 16.08 23.5G 20SE35 G37 C~55jP 2021 09 12.417400 00 53 41.630 +08 31 14.65 20SE35 G37 C~55jP 2021 09 12.477880 00 53 41.329 +08 31 12.98 20SE35 G37 C~55jP
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 -0.06 0.00 -0.11
2 0.0028 0.00 0.08 0.00 -0.07
3 0.0029 0.00 0.04 0.00 0.11
4 0.0029 0.00 -0.19 0.00 -0.01
5 0.0029 0.00 -0.01 0.00 -0.14
6 0.9474 0.00 0.31 0.00 0.03
7 4.0082 0.00 0.10 0.00 0.05
8 4.9885 0.00 -0.11 0.00 0.27
9 5.0758 0.00 -0.26 0.00 0.00
10 5.1304 0.00 0.01 0.00 0.01
11 6.1297 0.00 -0.20 0.00 0.26
12 7.0008 0.00 -0.11 0.00 -0.13
13 7.9237 0.00 0.17 0.00 0.02
14 9.0294 0.00 -0.08 0.00 -0.40
15 9.0321 0.00 0.23 0.00 -0.00
16 9.9985 0.00 0.16 0.00 0.15
17 10.0172 0.00 -0.20 0.00 0.06
18 10.0173 0.00 -0.04 0.00 -0.03
19 10.0175 0.00 -0.11 0.00 0.04
20 10.0963 0.00 -0.01 0.00 0.01
21 10.0964 0.00 -0.04 0.00 0.11
22 10.1646 0.00 0.21 0.00 -0.03
23 10.1648 0.00 0.25 0.00 -0.38
24 10.3235 0.00 0.07 0.00 0.06
25 10.3237 0.00 -0.06 0.00 0.07
26 10.9922 0.00 -0.06 0.00 0.00
27 10.9924 0.00 -0.05 0.00 0.11
28 10.9925 0.00 -0.11 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.
20SE35 quality flag:3 Type: 5:3EE 5:3EE 5:3EE axisobj 42.607 42.607 42.607 ecceobj 0.197 0.197 0.197 incobj 7.713 7.713 7.713 qmin 33.992 33.602 32.672 qmax 51.217 51.754 52.705 amean 42.327 42.328 42.328 amin 41.823 41.836 41.822 amax 42.900 42.889 42.908 emean 0.159 0.163 0.184 emin 0.115 0.107 0.116 emax 0.197 0.208 0.229 imean 8.996 8.453 6.720 imin 7.767 6.269 2.849 imax 10.841 10.863 10.851 excite_mean 0.224 0.222 0.224 fracstop 1.000 1.000 1.000 cjmean 3.023 3.024 3.022 libcent 0 176.7 185.0 178.2 libamp 0 144.1 147.5 143.7 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 140.8 80.7 125.0 kozaiamp 180.0 89.0 89.0